industrial packages

All Items
Water Treatment
Static And Pipeline Equipment
Environmental Packages
Water Desalination

Water desalination processes separate dissolved salts and other minerals from water. Different processes are used for this matter, such as vacuum distillation and membranes to desalinate. Reverse osmosis (RO) and Nano filtration (NF) are the leading pressure driven membrane processes. Conventional macro-filtration of suspended solids is accomplished by passing a feed solution through the filter media in a perpendicular direction.

Examples of such filtration devices include:

- Cartridge filters

- Bag filters

- Sand filters

- And multimedia filters.

Macro-filtration separation capabilities are generally limited to undissolved particles greater than 1 micron.

For the removal of small particles and dissolved salts, crossflow membrane filtration is used.

Membrane Distillation (MD) is a water desalination membrane process. MD is a hybrid process of RO and distillation in which a hydrophobic synthetic membrane is used to permit the flow of water vapor through the membrane pores, but not the solution it. The driving force for MD is the difference in vapor pressure of the liquid across the membrane.

NORDEN design water treatment package using any above mentioned method or sometime combination of them according to customer specifications, last thing to mention is that our packages maintenance costs are very economical.

Pressure Vessels & Drums

NORDEN has the expertise and experience to design, fabricate and install a variety of different types and sizes of pressure vessels especially with different kinds of INTERNALS. Over the years we have worked on numerous pressure vessels with more than 70 mm wall thickness and 5000 mm diameter.

Vessels are designed and engineered using latest versions of standards and softwares such as ASME, EN, BS and PVElite, COMPRESS, NozzlePRO also finite element analysis and solid modelling.Range of materials includes carbon steel, stainless steel,monel, inconel and other exotic materials.

Pressure vessels are used in a variety of applications. These include the industry and the private sector. They appear in these sectors respectively as industrial compressed air receivers and domestic hot water storage tanks, other examples of pressure vessels are: diving cylinder, recompression chamber, distillation towers, autoclaves and many other vessels in mining or oil refineries and petrochemical plants, nuclear reactor vessel, habitat of a space ship, habitat of a submarine, pneumatic reservoir, hydraulic reservoir under pressure, rail vehicle airbrake reservoir, road vehicle airbrake reservoir and storage vessels for liquefied gases such as ammonia, chlorine, propane, butane and LPG.

For design and construction purposes, the pressure vessel is generally defined as the pressure vessel proper including welded attachments up to, and including, the nozzle flanges, screwed or welded connectors, or the edge to be welded at the first circumferential weld to connecting piping.

The range of materials used for pressure vessels is wide and includes, but is not limited to, the following:

  1. Carbon steel (with less than 0.25% carbon).
  2. Carbon manganese steel (giving higher strength than carbon steel).
  3. Low alloy steels.
  4. High alloy steels.
  5. Austenitic stainless steels.
  6. Non-ferrous materials (aluminum, copper, nickel and alloys).
  7. High duty bolting materials.

Clad materials are accepted by national standards but often only the base material thickness can be used in design calculations.

Flare Gas Recovery

NORDEN will design, manufacture and install a bespoke system that absolutely fits our customers’ needs and gas characteristics. We can supply either a compressor (single or multi-stage sliding vane, or single stage liquid ring technologies) or a plug and play skidded Flare Gas Recovery Unit or even Eductor, one stage or multi stage type. Our Flare Gas Recovery systems are designed to handle very harsh gases on the long run. Our maintenance costs are amongst the lowest in the whole market thanks to our capacity to adapt the material to the gas characteristics. We are also able to estimate when / how maintenance has to be done months in advance.   

NORDEN designs advanced flare gas recovery systems that enable facilities requiring flare systems to achieve the benefits of near-zero flaring. Flare gas recovery can result in near 100 percent reduction of normal flaring, limiting flare operation to emergency releases and scheduled maintenance. Captured flare gas can then be reused as valuable fuel or feedstock. Near-zero flaring reduces costly emissions, giving you environmental control with an immediate return on investment.

NORDEN Solutions:

  • System design which is optimized to reduce NOx, SOx, CO and CO2 emissions, manufacturing and in-field start-up assistance
  • Engineering studies and Engineering packages
    We offer engineering studies and packages that analyze your specific flare system and evaluate the economic feasibility of installing a flare gas recovery system at your facility.
  • Eductor Selection, all Eductor technologies which is best suited for your specific application will be selected.
  • Compressor selection, the best suitable type of compressor will be selected for your specific application.
  • We offer on-site start-up and training, worldwide parts and service support and technical expertise to keep you system operating at peak performance.

 

 

Steam Condensate Polishing

Condensate polishing is a proven method of producing high purity, which can be economically returned to an ultra-pure state by simple polishing rather than using fresh make up process water. The design of condensate polishing system will be influenced by Steam cycles, Site conditions, Space considerations, Cooling water availability and temperature, Material of construction (used in condensers, Pumps, Ancillary equipment’s & Piping) and lastly by engineering requirements by the Client.

Two type of condensate will be produced in plants:

1-Hot condensate

2-Cold condensate

Treatment of hot and cold condensate have similarities and differences. The “suspect” hot condensate may contain oil and an additional kind of contamination of the condensate is due to possible dissolved solids content. Therefore, in order to assure the required quality of the Boiler Feed Water and of the produced steam, feeding the turbines, a deoiling and Polishing Treatment on Mixed Beds Filters preceded by Activated Carbon shall be also provided.

Generally below processes are used in a Condensate Polishing Unit: PROCESS CONDENSATE DE-OILING, CONDENSATE COOLING, CONDENSATE STORAGE & PUMPING, PROCESS CONDENSATE hc-ADSORBING and MIXED BED POLISHERS.

Shell & Tube Heat Exchangers

NORDEN has gathered knowledge and expertise in the fabrication of heat exchangers in a variety of sizes. Our shell type heat exchanger is made using the best equipment and is available at COST EFFECTIVE PRICES.

We have in-house expertise for the thermal and mechanical design of SHELL and TUBE heat exchangers based on relevant codes and standards such as TEMA, ASME and API. Design and engineering is performed using CAE and CAD systems (including finite element analysis) such as HTFS (HTRI), Aspen B-JAC and Ansys.

We’ve ability to manufacture heat exchangers from carbon steel (including low temperature carbon steel), stainless steel, Monel, Haste alloy and other exotic materials. Welding processes used in the fabrication include stick, MIG, sub arc and TIG welding.

Shell and tube heat exchangers are used extensively throughout the process industry and as such a basic understanding of their design, construction and performance is important to the practicing engineer. The objective of this paper is to provide a concise review of the key issues involved in their thermal design without having to refer to the extensive literature available on this topic. The author claims no originality but hopes that the format and contents will provide a comprehensive introduction to the subject and enable the reader to achieve rapid and meaningful results. The optimum thermal design of a shell and tube heat exchanger involves the consideration of many interacting design.

Denox Process

The most effective process to date for flue gas NOx removal in power plants is known as selective catalytic reduction (SCR). It operates at temperatures of between 300 °C and 400°C on the reaction principle that is  summarized by the following equations: 

Before the flue gas enters the reactor, ammonia is added in the form of a NH3 / air mixture, which promotes the reduction of nitrogen oxides when the gas comes into contact with the catalyst.
The DENOX unit can be installed downstream of the boiler between the economizer (feed water pre-heater) and the combustion air preheater and is known as the “high-dust” configuration.
When the unit is located downstream of the electrostatic precipitator this result is the so-called “low-dust” configuration. In this configuration the DENOX unit may be also installed downstream of the desulphurization system. This result is the so-called “tail-end” configuration.

THE DESIGN

Taking into account the Customer specifications and the amount of space available in each case, the size of individual reactors is optimized with the aid of pilot plant tests and with computational fluid dynamic models. The criteria of particular importance include the thorough mixture of NH3 and NOx molecules in the reactor hood and a constant gas flow in the vertical part of the reactor.
The key design parameter in a reactor of this type is the so-called space velocity (is normally between 1000 and 3000 per hour whereas for oil – and gas). This is a measure of the residence time of the flue gas mixture within the catalyst volume and result in a smaller quantity of catalyst being required for the NOx reduction.
Calculation of the space velocity takes into account the following factors:

  • Efficiency of the DENOX reaction
  • Temperature
  • Allowable ammonia slip
  • Flue gas analysis
  • Dust analysis
Evaporators

The Wide Production Of Evaporators Of NORDEN allows proposing the most suitable Evaporators for plant requirements.

Evaporator Consists Of A Heat Exchanger For Boiling The Solution With Special Provisions For Separation Of Liquid And Vapor Phases.  Operating costs are related principally to the Cost Of Heat, and, to a lesser extent, The Cost Of Utilities (Cooling Water, Electricity, Etc.) and Water Treating Chemicals. Heat (Energy) Costs Are Relatively Independent Of The Feed Water Composition.

TYPE OF EVAPORATORS are:

FALLING FILM EVAPORATORS Known As Vertical Shell-And-Tube Heat Exchanger With Laterally Or Concentrically Arranged Centrifugal Separator. 

FORCED CIRCULATION EVAPORATORS Known As Horizontal Or Vertical Shell-And-Tube Heat Exchanger Or Plate Heat Exchanger, With Flash Vessel/Separator, Circulation Pump.

PLATE EVAPORATORS Known As Plate Heat Exchanger, Separator. A Plate-And-Frame Configuration Employs Special Plates, With Alternate Product And Heating Channels. The Plates Are Sealed.

CIRCULATION EVAPORATORS Vertical Shell-And-Tube Heat Exchanger Of Short Tube Length, With Lateral Separator Arranged At The Top. The Liquid To Be Concentrated Is Supplied To The Bottom And Rises To The Top Of The Heating Tubes In Accordance With The “Mammoth Pump” Or Rising Film Principle.

Air Coolers

Air Cooled Heat Exchanger’s also known as Fin Fan heat exchangers are typically used in applications where water is not available or the desired process outlet temperature can be achieved given the maximum ambient temperatures.  Also, air cooled equipment can be a more simple solution against water cooled. With our vast knowledge and expertise in a wide range of industries and markets we can help put you in the most cost effective and efficient option available. NORDEN can provide equipment with copper, carbon steel, or stainless construction including the headers, tubes and fins. The air-cooled heat exchangers are mostly used when the plant location and the ambient conditions do not allow an easy and economic use of other cooling systems.

NORDEN provides complete aircooler units including tube bundle assembly, motor-fan groups, structure, access ladders and walkways.

NORDEN supplies also Pre-assembled modules.These units are expressly designed for safe transport and easy installation on the plant. On demand they can be shop tested before delivery.

The air cooled tube bundle cover the complete range of: 1-Metallurgies from low alloy and carbon steel, stainless steel, duplex and super-duplex stainless steel, nickel alloys and titanium. 2-Plugs, cover or high pressure manifold header boxes design. 3-Extruded, L-footed or Embedded aluminum tubes fins. 

As well as common configurations we can also supply additional features like: 

  • Finite element analysis header box verification under severe load cases including nozzle to header join.
  • High pressure design up to 700 Bar(g) made by forgings including tube ends to manifold box IBW (Internal bore welding) joint.
  • Plug type header box local tube-ends to tube sheets welded joint PWHT through plug hole.
  • Low noise emission design (76 db(A) power level) with low noise fan and noise damping panels.
  • Resonance vibration free design by spectral analysis check
  • Completely pre-assembled modularized units.
  • Winterization arrangement made of intake louvers, by-pass louvers, exhaust louvers and enclosure.
  • Design and manufacturing of frequency converter cabinets and container units comprehensive of MV/LV transformers, MCC, PLC, frequency converters and cooling.
Flue Gas Desulphurization

NORDEN FGD (Flue Gas Desulphurization) plants are based on the wet limestone technology with production of gypsum, which is readily usable by manufacturers of gypsum based products.

The limestone wet process has become the most popular process for flue gas desulphurization; NORDEN has the experience and the know-how for the design and the construction of complete FGD plant, with main characteristics as follow: 1- High removal efficiency (> 96%), 2-Limestone consumption closely approximating stoichiometric requirements, 3- Reduced space requirements due to compact construction, 4- Scrubbing tower complete with integral absorption, oxidation, crystallizing and mist separation stages, 5- Low residual moisture in effluent gas by optimal location of the demister, 6- High gypsum purity in the final product as a result of high oxidation efficiency

PROCESS DESCRIPTION

Flue gas ducts connect flue gas system to absorber and from absorber to stack. After the flue gas cleaning a reheating system for clean gases is required before they enter the stack.

The absorber consists of a vertical cylindrical vessel, with a flue gas inlet and outlet opening. The part of the absorber between the gas inlet and gas outlet (the gas section) may be subdivided in "the spray section" and in "the mist eliminator section". The part of the absorber below the gas inlet contains the absorber slurry (the sump). In the spray section, the flue gas will be in contact with a fine spray of limestone slurry droplets, as produced by the slurry spray banks, equipped with spray nozzles.

The SO2 and other acid gases are absorbed to a large extend in the slurry droplets and react with the limestone present in the slurry to form gypsum. In order to obtain nearly 100% oxidation of sulphite to sulphate, the absorber is provided with an oxidation air injection system for the injection of a certain flow of oxidation air, supplied from a compressor system.

The bleed system consists essentially of an absorber bleed pump and a gypsum cyclone battery, supplied with absorber slurry by the absorber bleed pump.

The underflow of the cyclones flows to the mechanical dewatering that produces dry commercial gypsum with a maximum water content of 10%.

Waste Water Treatment - CPI Units

CPI (Corrugated plate interceptor) or TPI (Tilted plate interceptor) separators are predominantly used in separation of free oil from effluent water or suspended solids for oily water treatment in an OWS (oily Water System).

NORDEN CPI Units are designed to remove free oil and suspended solids from water as a primary stage of water treatment and utilize plate packs as the main separation device. The plate packs are designed with specific spacing and alignment to allow solids to settle and fall to the bottom while simultaneously allowing oil drops to rise and coalesce, thereby reducing the oil and solids loading from the downstream water treatment train and smoothing out flow slugging.

The basic principle of difference in gravity between the phases (liquid – liquid or solid – liquid) is employed in an OWS in separation of the two phases. This phenomenon is defined as “Gravity Separation”.

The effectiveness of this technique is subjected to various factors such as difference in the density, viscosity, factors of the medium, temperature, turbulence, and also the nature of impurity etc.

In some cases chemical coagulation and flocculation is needed for removal of the impurity by making them heavier or lighter.

Rectangular Tanks
 

These tanks are designed with heavy walls for long service under severe conditions.  Straight sides allow maximum use of space. 

NORDEN rectangular tanks are design by Roarks’ formula and ASME by API verification for some items; we had references especially in offshore facilities.

FEATURES 

  • Fully prefabricated for easy transport, storage and installation
  • Manufactured from 5 mm thick steel sheets.
  • Hot dip galvanised fasteners provided as standard. (Stainless steel or Molybond available on request)
  • Flat top steel roof
  • Bolt together, "stripseal" design for easy installation
  • Capacities from 2.4 to 1235 kilolitres
  • Complies with relevant codes under international Standards
  • Compacted gravel, steel decking or reinforced concrete slab

OPTIONS 

  • External ladders with extended handrails, platforms and safety cages to conform to standard
  • 600mm, 750mm and 900mm square manholes
  • Water level indicators
  • Roof vents
  • Anti vortex outlets
  • Pump suction tanks
  • Overflow to drainage
  • Scour-washout sump
  • Pipe work and connections
Incinerators

Several kinds of incinerators are designed and manufactured by NORDEN as follows:

  • STATIC INCINERATORS for the incineration of gaseous, liquid and solid wastes
  • ROTARY INCINERATORS for the incineration of solid waste
  • MULTIPLE HEARTH INCINERATORS for the incineration of sludge

STATIC INCINERATORS:

Static incinerators for gaseous wastes consist usually of a vertical cylindrical chamber internally lined by refractory material with alumina content which varies with the type of waste to be burnt. and its main applications are for Gas and liquid waste of oil and petrochemical industries, Polluted gas and liquid streams and Solvents and paintings. The static incinerator for solid wastes is essentially used for the burning of small quantities of wastes (max 200 kg/h) particularly in the field of hospital wastes.The system is composed by three chambers:

  • Primary chamber
  • Secondary chamber with the grate
  • Post-combustion chamber

ROTARY INCINERATORS FOR SOLID WASTE (up to 80 t/d):

The rotary incinerator suitable for Hazardous and non-hazardous industrial solid wastes and Hospital wastes, consists principally of a revolving cylinder inside lined with refractory materials slightly inclined to the horizontal and supported by two riding rings resting on two trunnion rolls. In function of the type of waste to be burnt, in a wide range of temperature (from approx 800 °C to 1100 °C). The volatile products (flue gases with gaseous unburnt organic compounds and particulates) resulting from the thermal process occurring in the rotary chamber, are drawn into the Post-Combustion Chamber for a further oxidation. Flue gas treatment system: consists of: flue gas cooling system, pollutant removal system and ash removal.

MULTIPLE HEARTH INCINERATORS- consists of a vertical cylindrical shell lined with refractory which encloses a series of horizontal circular hearths. These type of incinerators are good for  Incineration of chemical and biological sludge,  Incineration of refinery sludge, Activated carbon regeneration and Foundry sands regeneration.

Waste Water Treatment - Deoiling Hydrocyclones

Hydrocyclone based process systems are the most cost-effective solution for produced water treatment clean up. Located directly downstream on the water outlet of the production separator and upstream of the water level control valve, these systems operate in a proportional “pressure ratio” control manner.

NORDEN’s proprietary Deoiling Hydrocyclones are highly efficient in recovering oil from produced water and other process streams. Deoiling hydrocyclones have established themselves as standard oil recovery equipment.

We offer Deoiling Hydrocyclones in the following range of materials so you can be sure that they are suitable for your application no matter how severe the service:

  • Duplex stainless steel
  • Super Duplex stainless steel
  • tungsten carbide 
Pig Launcher & Receivers

Pig Launcher & Receivers

NORDEN designs and manufactures Launchers and Receivers for off-shore and onshore projects according to pipeline and vessel design codes including NACE, ASME VIII, BS 5500 and ASME B31.3, B31.4, B31.8. Our capacity ranges from 6” NS to 56” NS, ANSI Ratings 150# to 2500# and API, using regular carbon steel, or with different cladding and alloy steel materials. We’ve in-house engineering, manufacturing and testing capacity to produce launching and receiving systems to meet specific requirements of clients.

Pigging in the maintenance of pipelines refers to the practice of using pipeline inspection gauges or 'pigs' to perform various operations on a pipeline without stopping the flow of the product in the pipeline. Pigs get their name from the squealing sound they make while traveling through a pipeline. These operations include but are not limited to cleaning and inspection of the pipeline. This is accomplished by inserting the pig into a Pig Launcher - a funnel shaped Y section in the pipeline. The launcher is then closed and the pressure of the product in the pipeline is used to push it along down the pipe until it reaches the receiving trap - the 'pig catcher'.

Advantages of Pig Launcher/ Receiver

A major advantage of piggable systems is the potential resulting product savings. At the end of each product transfer, it is possible to clear out the entire line contents with the pig, either forwards towards the receipt point, or backwards to the source tank. There is no requirement for extensive line flushing.

Without the need for line flushing, pigging offers the additional advantage of a much more rapid and reliable product changeover. Product sampling at the receipt point becomes faster because the interface between products is very clear, and the old method of checking at intervals, until the product is on-specification, is considerably shortened.

Waste Water Treatment - CPI Units

CPI (Corrugated plate interceptor) or TPI (Tilted plate interceptor) separators are predominantly used in separation of free oil from effluent water or suspended solids for oily water treatment in an OWS (oily Water System).

NORDEN CPI Units are designed to remove free oil and suspended solids from water as a primary stage of water treatment and utilize plate packs as the main separation device. The plate packs are designed with specific spacing and alignment to allow solids to settle and fall to the bottom while simultaneously allowing oil drops to rise and coalesce, thereby reducing the oil and solids loading from the downstream water treatment train and smoothing out flow slugging.

The basic principle of difference in gravity between the phases (liquid – liquid or solid – liquid) is employed in an OWS in separation of the two phases. This phenomenon is defined as “Gravity Separation”.

The effectiveness of this technique is subjected to various factors such as difference in the density, viscosity, factors of the medium, temperature, turbulence, and also the nature of impurity etc.

In some cases chemical coagulation and flocculation is needed for removal of the impurity by making them heavier or lighter.

Waste Water Treatment - Gas Flotation

Induced Gas Flotation (IGF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by injecting gas bubbles into the water or wastewater in a flotation tank. The small bubbles adhere to the suspended matter causing the suspended matter to float to the surface of the water where it may then be removed by a skimming device.

Induced Gas Flotation is very widely used in treating the industrial wastewater effluents from oil refineries, petrochemical and chemical plants, natural gas processing plants and similar industrial facilities. A very similar process known as dissolved air flotation is also used for wastewater treatment. Froth flotation is commonly used in the processing of mineral ores.

The feed water to the IGF float tank is often (but not always) dosed with a coagulant (such as ferric chloride or aluminum sulfate) to flocculate the suspended matter.

Some IGF unit designs utilize parallel plate packing material to provide more separation surface and therefore to enhance the separation efficiency of the unit.

NORDEN specialize in the design & build of turnkey water treatment process plant; therefore non-standard equipment and specifications can be easily incorporated into full treatment packages. This ensures our clients requirements are met in the most efficient manner either by incorporating standard plant or a bespoke design.

 

 

Stone(Sand) Trap

NORDEN is leading manufacturer, supplier and exporter of Sand (Stone) Trap: Sand separators are an integral part in protecting downstream production equipment from well-formation sand and/or frac sand.  From 6"O.D. to 40"I.D. L-Type or our low profile high volume spherical design. 2,000 psig - 10,000 psig (206 bar to 689 bar). Our sand traps are designed for stationary applications and/or mounted on transportable L-shape type skids.

 Sand Separators Operation

Our sand traps operate vertically and use gravity, not centrifugal force, to separate sand from the flow. As the flow enters the sand trap, it is radically slowed and the direction changed 90 degrees by the stinger-diverter. This allows the sand to separate from the gas and liquids. Sand falls to the bottom of the trap and is kept there by a system of proprietary baffles. The baffles allow gas and liquids to move up and out while keeping the sand separate. Sand is removed by opening one of the two sand discharge ports during operation; shut-in is not required if one of the sand outs clogs.

We offer a 5800 psi version of our sand separator mated to a heavy-duty dual-axle trailer. It features hydraulic lift/lower capability for fast and easy set up. This design allows one man using a pickup truck to pull, position, and rig up. Well-suited for fast-paced flowback and frac cleanup.

Most of our sand traps are NACE certified right out of fabrication and can be used for sweet or sour service. For instance, all our 5800# psi sand traps are NACE certified. Our sand traps are ASME coded and registered with the National Board.

Waste Water Treatment - Deoiling Hydrocyclones

Hydrocyclone based process systems are the most cost-effective solution for produced water treatment clean up. Located directly downstream on the water outlet of the production separator and upstream of the water level control valve, these systems operate in a proportional “pressure ratio” control manner.

NORDEN’s proprietary Deoiling Hydrocyclones are highly efficient in recovering oil from produced water and other process streams. Deoiling hydrocyclones have established themselves as standard oil recovery equipment.

We offer Deoiling Hydrocyclones in the following range of materials so you can be sure that they are suitable for your application no matter how severe the service:

  • Duplex stainless steel
  • Super Duplex stainless steel
  • tungsten carbide 
Waste Water Treatment - Clarification

Clarification occurs in a large basin where water is again allowed to flow very slowly. Sludge, a residue of solids and water, accumulates at the basin's bottom and is pumped or scraped out for eventual disposal. Clarification is also sometimes called sedimentation.

Steps of Clarification

  • Coagulation. Coagulation can be accomplished through the addition of inorganic salts of aluminum or iron. These inorganic salts neutralize the charge on the particles causing raw water turbidity, and also hydrolyze to form insoluble precipitates, which entrap particles. Coagulation can also be effected by the addition of water-soluble organic polymers with numerous ionized sites for particle charge neutralization. 
  • Flocculation. Flocculation, the agglomeration of destabilized particles into large particles, can be enhanced by the addition of high-molecular-weight, water-soluble organic polymers. These polymers increase floc size by charged site binding and by molecular bridging.

Horizontal Flow Clarifiers, Originally, conventional clarification units consisted of large, rectangular, concrete basins divided into two or three sections. Each stage of the clarification process occurred in a single section of the basin. Water movement was horizontal with plug flow through these systems.

Upflow Clarifiers, Compact and relatively economical, upflow clarifiers provide coagulation, flocculation, and sedimentation in a single (usually circular) steel or concrete tank.

In-Line Clarification is the process of removing raw water turbidity through the addition of coagulant just prior to filtration.

Quick Opening Closure

NORDEN is a world leader in the manufacture of quick opening closures and hundreds of our QOC closures are in operation now.

Quick opening closures are pressure retaining structures designed to provide access to pipelines and pressure vessels.

Our QOC closures provide safe and quick access to pipeline and pressure vessels. They are built to meet all required international design codes and can be used in horizontal, vertical, inclined or declined applications.

Approved Design

  • ASME VIII Div.1
  • ASME VIII Div. 2
  • PD5500

Types:

  • Rapid Opening Closure
  • Double Bolt Closure
  • Swing-Bolt Closure 
  • CAMLOCK Bolt Closure
  • Threaded Closure

Waste Water Treatment - Gas Flotation

Induced Gas Flotation (IGF) is a water treatment process that clarifies wastewaters (or other waters) by the removal of suspended matter such as oil or solids. The removal is achieved by injecting gas bubbles into the water or wastewater in a flotation tank. The small bubbles adhere to the suspended matter causing the suspended matter to float to the surface of the water where it may then be removed by a skimming device.

Induced Gas Flotation is very widely used in treating the industrial wastewater effluents from oil refineries, petrochemical and chemical plants, natural gas processing plants and similar industrial facilities. A very similar process known as dissolved air flotation is also used for wastewater treatment. Froth flotation is commonly used in the processing of mineral ores.

The feed water to the IGF float tank is often (but not always) dosed with a coagulant (such as ferric chloride or aluminum sulfate) to flocculate the suspended matter.

Some IGF unit designs utilize parallel plate packing material to provide more separation surface and therefore to enhance the separation efficiency of the unit.

NORDEN specialize in the design & build of turnkey water treatment process plant; therefore non-standard equipment and specifications can be easily incorporated into full treatment packages. This ensures our clients requirements are met in the most efficient manner either by incorporating standard plant or a bespoke design.

 

 

Waste Water Treatment - Filtration

NORDEN will design, manufacture and install filters for waste water treatment systems; Filtration is used in addition to regular coagulation and sedimentation for removal of solids from surface water or wastewater. This prepares the water for use as potable, boiler, or cooling make-up. Wastewater filtration helps users meet more stringent effluent discharge permit requirements. below are major methods we use:

MIXED MEDIA FILTER BEDS apply to a type of filter bed which is graded by size and density.

GRAVITY FILTERS are open vessels that depend on system gravity head for operation. The essential components of a gravity filter include The filter shell, The support bed, An underdrain system, Wash water troughs and Control devices that maximize filter operation efficiency. 

PRESSURE FILTERS are typically used with hot process softeners to permit high-temperature operation and to prevent heat loss. The use of pressure filters eliminates the need for repumping of filtered water. Pressure filters are similar to gravity filters in that they include filter media, supporting bed, underdrain system, and control device; however, the filter shell has no wash water troughs.

PRECOAT FILTRATION is used to remove very small particulate matter, oil particles, and even bacteria from water. This method is practical only for relatively small quantities of water which contain low concentrations of contaminants.

Strainers

NORDEN is leading manufacturer, supplier and exporter of Strainers that are used for filtration in liquid flow pipes. These Strainers are available in various sizes with different specifications. We supply these Strainers in various industries at competitive prices.  Strainers most important features are as follows: 

  • Sizes: 15mm - 500mm
  • Type: Y - T - Basket Type
  • Material: Cast Iron, Cast Carbon Steel, Stainless Steel and Mild Steel Fabricated Mesh
  • Stainless Steel 304 & 316 Ends
  • Flanged, Screwed.
  • 20, 40, 60, 80, 100, 150, 200, 325 and 400 mesh stainless steel screens
  • Suitable for liquid, gas or steam

Y-Strainers are typically used in applications where the amount of solids to be removed is small, and where frequent clean-out is not required. They are most often installed in gaseous services such as steam, air, nitrogen, natural gas, etc.  The compact, cylindrical shape of the Y-strainer is very strong and can readily accommodate the high pressures that are common in this type of service.  Pressures up to 420 bar are not unusual.  When steam is being handled, high temperature can be an additional complicating factor.  A steam pressure of almost 100 bar will often be found at temperatures of 540°C. A Y-strainer has the advantage of being able to be installed in either a horizontal or vertical position. NORDEN's Y Strainers are furnished with high quality stainless steel screens that are carefully fabricated to fit the strainer body perfectly. This, coupled with the precision machined screen seat on the body of the strainer, protects against any bypass.

 

Waste Water Treatment - Clarification

Clarification occurs in a large basin where water is again allowed to flow very slowly. Sludge, a residue of solids and water, accumulates at the basin's bottom and is pumped or scraped out for eventual disposal. Clarification is also sometimes called sedimentation.

Steps of Clarification

  • Coagulation. Coagulation can be accomplished through the addition of inorganic salts of aluminum or iron. These inorganic salts neutralize the charge on the particles causing raw water turbidity, and also hydrolyze to form insoluble precipitates, which entrap particles. Coagulation can also be effected by the addition of water-soluble organic polymers with numerous ionized sites for particle charge neutralization. 
  • Flocculation. Flocculation, the agglomeration of destabilized particles into large particles, can be enhanced by the addition of high-molecular-weight, water-soluble organic polymers. These polymers increase floc size by charged site binding and by molecular bridging.

Horizontal Flow Clarifiers, Originally, conventional clarification units consisted of large, rectangular, concrete basins divided into two or three sections. Each stage of the clarification process occurred in a single section of the basin. Water movement was horizontal with plug flow through these systems.

Upflow Clarifiers, Compact and relatively economical, upflow clarifiers provide coagulation, flocculation, and sedimentation in a single (usually circular) steel or concrete tank.

In-Line Clarification is the process of removing raw water turbidity through the addition of coagulant just prior to filtration.

Waste Water Treatment - Softening

Softening:

When water contains a significant amount of calcium and magnesium, it is called hard water. Hard water is known to clog pipes and to complicate soap and detergent dissolving in water.
NORDEN Water softening technology is a technique that serves the removal of the ions that cause the water to be hard, in most cases calcium and magnesium ions. Iron ions may also be removed during softening.

 Water softeners are specific ion exchangers that are designed to remove ions, which are positively charged.
Softeners mainly remove calcium (Ca2+) and magnesium (Mg2+) ions.

Softeners have different types such as automatic, semi-automatic, or manual.

A water softener typically consists of two tanks, a larger one into which rock or pellet salt is added and a smaller tank containing the ion exchange resin through which the hard water passes.

After water softening bed regeneration is initiated, the first step is to backwash the resin bed. Then brine is slowly deducted from the salt tank at a set flowrate for a specific time.

Given proper consideration of raw water quality and ultimate end use of the treated water, the application of precipitation processes has few limitations. However, operational difficulties may be encountered unless the following factors are controlled: Temperature, Hydraulics, Chemical Control.

 

Anchor Flange

NORDEN designs and manufactures various size types of ANCHOR FLANGES.

WELDING NECK ANCHOR FLANGES

Anchor flanges are important elements in many thrust-control systems, especially those protecting pipeline pumping stations. Welded into the line and encased in concrete, they immobilize the pipe at predetermined locations and transfer built-up stresses to external structures. For example, in cross-county pipelines end forces of considerable magnitude are generated by internal pressure and temperature changes. A 24" O.D. x 0.594" wall pipe in a pipeline operating at 1100 psi and subjected to a 90° rise in metal temperature, for example, will develop total thrust of 1,000,000 lbs. Unless these forces are properly controlled, they can damage pumps, valves and other close-tolerance equipment. Anchor Flanges may be used to secure subsea piping and risers to platform structures.

 

 

Waste Water Treatment - Filtration

NORDEN will design, manufacture and install filters for waste water treatment systems; Filtration is used in addition to regular coagulation and sedimentation for removal of solids from surface water or wastewater. This prepares the water for use as potable, boiler, or cooling make-up. Wastewater filtration helps users meet more stringent effluent discharge permit requirements. below are major methods we use:

MIXED MEDIA FILTER BEDS apply to a type of filter bed which is graded by size and density.

GRAVITY FILTERS are open vessels that depend on system gravity head for operation. The essential components of a gravity filter include The filter shell, The support bed, An underdrain system, Wash water troughs and Control devices that maximize filter operation efficiency. 

PRESSURE FILTERS are typically used with hot process softeners to permit high-temperature operation and to prevent heat loss. The use of pressure filters eliminates the need for repumping of filtered water. Pressure filters are similar to gravity filters in that they include filter media, supporting bed, underdrain system, and control device; however, the filter shell has no wash water troughs.

PRECOAT FILTRATION is used to remove very small particulate matter, oil particles, and even bacteria from water. This method is practical only for relatively small quantities of water which contain low concentrations of contaminants.

Isolation Joint

NORDEN designs and manufactures different types of ISOLATION JOINTS:

  • IsoJoint For Superior Cathodic Protection
  • IsoJoint is a true monolithic isolating joint which effectively and efficiently stop short circuits and stray currents from damaging pipelines and equipment.
  • IsoJoint employs one or more, pre-assembled pressure seals and isolating ring.
  • Unlike isolating gasket kits, IsoJoint does not depend on an installer fitting gasket, sleeves and washers into a flange on location.
  • Any one of these parts could be damaged causing a complete breakdown of the isolated flange, thus loosing cathodic isolation.

Electrically Isolates Pipeline Sections
The Pipeline Insulating Joint (PIJ) is a high-resistance fitting used to electrically isolate sections of a pipeline to improve the effectiveness of cathodic protection systems and to reduce ground-loop currents. Unlike insulating flanges or flange kits that are field assembled and tested, the PIJ is factory assembled, electrically tested at five different stages of manufacturing, and hydrostatically tested. The PIJ is provided with extension nipples that match the pipeline wall and grade and are long enough to eliminate any possibility of thermal damage to the PIJ during field welding. The monolithic design of the PIJ results in a pipe fitting having high cyclic bending strength integrity. This aspect is particularly important for offshore pipeline riser applications where cyclic loading is common.

Design Specifications
Pipe Insulating Joints are designed in accordance with ASME Pressure Vessel Code, Section VIII, Division 1, unless another recognized code is specified. Each PIJ is designed to be at least as strong as a comparably rated pipeline when subjected to external loads.

The electrical resistance of the PIJ is at least 40 mega-ohms with 1000 VDC applied potential, and the maximum leakage current, with 2500 VAC (60 HZ) applied potential, is 5 mA. The dielectric strength (breakdown voltage) of the PIJ is designed to exceed 20,000 volts.

Waste Water Treatment - Softening

Softening:

When water contains a significant amount of calcium and magnesium, it is called hard water. Hard water is known to clog pipes and to complicate soap and detergent dissolving in water.
NORDEN Water softening technology is a technique that serves the removal of the ions that cause the water to be hard, in most cases calcium and magnesium ions. Iron ions may also be removed during softening.

 Water softeners are specific ion exchangers that are designed to remove ions, which are positively charged.
Softeners mainly remove calcium (Ca2+) and magnesium (Mg2+) ions.

Softeners have different types such as automatic, semi-automatic, or manual.

A water softener typically consists of two tanks, a larger one into which rock or pellet salt is added and a smaller tank containing the ion exchange resin through which the hard water passes.

After water softening bed regeneration is initiated, the first step is to backwash the resin bed. Then brine is slowly deducted from the salt tank at a set flowrate for a specific time.

Given proper consideration of raw water quality and ultimate end use of the treated water, the application of precipitation processes has few limitations. However, operational difficulties may be encountered unless the following factors are controlled: Temperature, Hydraulics, Chemical Control.

 

Grit Trap

NORDEN designs and manufactures high pressure Grit Traps. Grit traps are highly efficient, low energy mechanisms that are an essential first step in wastewater treatment. With their sloping sides and a specially designed, slow-rotating impeller, the grit trap provides maximum separation of heavy mineral solids (grit) while rejecting lighter organic solids, which remain in the wastewater flow. Removing these heavy solids protect the rest of the downstream processes from the adverse effects of grit. 

Contact Us

  • 385, River Oaks PKWY, APT 2093, San Jose , CA, USA
  • +1 713 364 6260
  • info@nordensolutions.com