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Oxygen Scavenger

An oxygen scavenger is a chemical substance that is used to reduce or completely remove oxygen in fluids and enclosed spaces to prevent oxygen-induced corrosion. It is also known as an oxygen absorber. It is used as a corrosion inhibitor in oil and gas production installations, packaging, production separation and seawater injection systems. Oxygen scavengers increase the shelf life or service life of the components under protection. The components of an oxygen absorber vary according to intended use, the water activity of the product being preserved, The amount of oxygen to be removed, Characteristics and field conditions,Ability to passivate metallic surface and other factors. 

we are manufacturing  many types of oxygen absorbers available to cover a wide array of applications. Oxygen scavenging technology can quickly reduce oxygen levels in sealed containers to below 0.01%. Even very low levels of oxygen can cause corrosion. Table I shows the concentrations which must be complied with in deaerated water if corrosion to steel is to be avoided: 

Oxygen Limits (mg/L)

Type of Water                                Maximum Oxygen Concentration (mg/L)

Cold Water                                      : 0.300

Hot Water                                        : 0.100

Low Pressure Boilers (<250 psi)   : 0.030

High Pressure Boilers                    : 0.005 

Sources of Oxygen
A major obstacle in planning any boiler treatment program is the difficulty of estimating the oxygen present in a system or being added with the make up. Temperature is an especially critical factor. Since oxygen is not an ionizable gas, its solubility is much more temperature dependent than is carbon dioxide. Low temperature make up water contains as much as 10 mg/L of oxygen and hot feedwater about 3 mg/L. A variation from 40° F to 80° F in our water source results in a drop in oxygen content from 13 ppm to 8 ppm. Concentrations of oxygen are usually expressed as cubic centimetres per litter (cc/L) or millilitres per litter (ml/L).Oxygen may also be reported by weight: 1 cc/L or ml/

Sulfite based

Oxygen Scavenger 

It is  an ideal treatment for both low and medium pressure steam boilers. it should be dosed at the rate of 18 ml/m3 for every ppm of dissolved oxygen.

  • Ideal treatment for low and medium pressure boilers

  • Rapidly reacts with oxygen preventing corrosion

  • Enhances protection against caustic embrittlement

  • Ideal application for used in the food industry.

Sulfite products can be based on different type of initial
chemicals (sodium sulfite, sodium metabisulfite, sodium
hydrogen sulfite and ammonium sulfite) but in all cases
by dosing the product reactive sulfite ions are released
in alkaline boiler water.

Sodium Sulfite – Catalyzed is an inorganic compound with the chemical formula Na₂SO₃. It is also known as Salt Cake. Sodium Sulfite is primarily used as an oxygen scavenger in water-based oil drilling fluid systems.Sodium sulfite has a white/ pale yellow appearance and is odorless. It is soluble in water and is catalyzed using a cobaltous compound.

As an oxygen scavenger, Sodium Sulfite is added continually until the residual sulfite (SO3) concentration in the mud filtrate reaches or exceeds the levels required. After that, this level can be sustained with daily treatments. The amounts required will depend on the severity of the dissolved oxygen content in the drilling mud.Sodium Sulfite can quickly breakdown. It is usually added at a concentration of one to two sacks to a barrel of water. After mixing, the mixture should be covered with an appropriate cover to reduce the amount of oxygen from the air that the mixture might absorb. It should be added to the drilling fluid system with an injection pump.

The product is packed in 35.0 kg, 50.0 kg HDPE Carboys

TDS

Nelco-Oxscav10115

MSDS

Water Treatment

TDS

Nelco-Oxscav10130

MSDS

Oil well drilling

TDS

Nelco-Oxscav10140

MSDS

Water Treatment

Nelco-Oxscav10199

TDS
MSDS

Water Treatment

Ammonium Bisulphite Based

Oxygen Scavanger 

We manufacturer a wide range of Ammonium bisulphite. We have both catalyzed and non-catalyzed  and purity ranging from 37% to 70%.

Ammonium bi sulphite solution is widely used in oil fields. In upstream oil field industry it is being used as an oxygen scavenger or corrosion inhibitor. It is also used on photography industry along with caramel colour manufacturing. The Ammonium Bisulfite we manufacture is stabled for maximum shelf life and to withstand minimum temperature provided material to be stored under proper storage condition.

Application :

  • Oilfield Chemicals

  • To produce photography chemicals

  • X-Ray Fixer and developer chemicals

  • Specialty Chemicals

  • To produce caramel colour

  • Industrial Chemicals

  • Hydrotest Chemical 

  • it is also known as Ammonium Hydrogen Sulfate

 

Available in 40%, 50%, 55%, 60%, 65%, 70% 

Packing : 250 Kg Drum & 1000 Ltr. IBC & 5000 Ltr. Tanker

Nelco-Oxscav10240

TDS
MSDS

Hydrotest

Nelco-Oxscav10255

TDS
MSDS

Water Treatment

Nelco-Oxscav10265

TDS
MSDS

Drilling Water

Carbohydrazide based

Oxygen Scavenger 

it is an effective oxygen scavenger and metal passivator over the entire range of temperatures to which the boiler is generally subjected.it is the chemical compound with the formula OC(N2H3)2. It is a white, water-soluble solid. It decomposes upon melting.it is used to remove oxygen in boiler systems. Oxygen scrubbers prevent corrosion.

Carbohydrazide is one of popular an alternative Oxygen Scavenger. it does provide outstanding protection from oxygen corrosion together with excellent feed water and boiler system passivation.it reacts directly with oxygen. It helps prevent oxygen damage and continues to passivate metal surfaces during wet lay-up. 

it is used as an oxygen scavenger for high pressure boilers in power plants and other industries to reduce corrosion of metal pipes and fittings.it use in boilers of any pressure up to 220 bargs.


Recommended dose of Carbohydrazide :
Low Pressure Boiler ( 0 to 40 bar ) 0.10 to 0.2  ppm level  
Medium Pressure Boiler ( 41 to 60 bar )  0.1 to 0.15 ppm level  
High Pressure Boiler ( more then 60 bar)  0.05 to 0.10 ppm level

The product is packed in 25,50,200 Kg

Nelco-Oxscav10335

Erythorbate Based

Oxygen Scavenger 

The oxygen scavenger Erythorbate, better known as
vitamin C, can be used in food processing applications.
It is a metal passivator, but only for the boiler part not the
steam and condensate systems, as erythorbate is not
volatile and therefor used in low and medium pressure
boilers. Erythorbate reacts with oxygen through a series
of complex chemical reactions. Oxalate is one of the
intermediate reaction products, but the final reaction
products are water and carbon dioxide. As with
carbohydrazide, the formation of carbon dioxide in the
condensate will lower the pH value and condensate
treatment is required. Erythorbate reacts with the steel
and copper surfaces to form protective passive films, but
as a strong oxidizer it converts unwanted hematite into
protective magnetite. 

Nelco-Oxscav10465

Plsase write to us for Corrosion Inhibitor PDS and MSDS

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