No oxygen is entering the boiler with the feed water when hydrazine is present in the water ( This will help to decrease oxygen on HP, LP boiler )
The objective is to maintain a hydrazine residual between 0.05-0.2 ppm depending on operating pressure and boiler designe. Actual consumption is determined under operating conditions. A normal dosage is approximately 1 ltr. per day, depending of system layout.
Hydrazine is a convenient reductant because the by-products are typically nitrogen gas and water. Thus, it is used as an ANTIOXIDANT, an oxygen scavenger, and a corrosion inhibitor in water boilers and heating systems.
Hydrazine is mainly used as a foaming agent in preparing polymer foams.
No oxygen is entering the boiler with the feed water when hydrazine is present in the water.
Hydrazine is used as an oxygen scavenger for high pressure boilers in power plants and other industries to reduce corrosion of metal pipes and fittings. Hydrazine Test Method, in which several solutions have been formulated as a Hydrazine Reagent. The method is both sensitive and easy to perform. It is used mostly for the determination of small amounts of hydrazine in boiler feedwater.
Valuable Boiler Water Treatment Chemicals :
Hydrazine Hydrate (50 ~ 51% as N2H4) plays very important role for corrosion protection in boilers.
Activated Hydrazine (34 ~ 35% as N2H4) Catalyzed Hydrazine solution for corrosion Protection and related equipment.
Morpholine (C4H9NO). Technical Grade for Boiler Water Treatment. Purity Not less than 99%.
Acid Inhibitor : For the suppression of Hydrochloric Acid attack on Ferrous alloys, Cuprous alloys and Titanium alloys, effec up to 94°C with efficiency not less than 75% in 5% HCI solution and Acid Inhibitor concentration 2%.
Ammonia 25% (NH4OH).
25% as ammonium Hydroxide used high pressure Boiler water treatment.
It is a clear colorless liquid.
PH 11-12 @ 20 °C.
Density 0.9 g/cm3.
Chloride (CL) 0.002 mg/liter maximum.
Iron (Fe) 0.002 mg/liter maximum.
Hardness Stabilizer :
Polyacrylate material of low molecular weight.
Non-volatile used for scale inhibition in sea water treatment.
The product is miscible with water in all proportions. And is clear Liquid.
PH valve 5-7.
Density @ 20°C Approx. 40%.
Chemical Characterization Sodium Polyacrylate, Modified, Aqueous solution.
Solidification temperature -20°C.
Flash point >100°C.
Ignition temperature >200°C.
Why control balance of Hydrazine must required ?
Control of Hydarazine level in Boiler water is very important. As proper level maintenance protect metal machinery parts from corrosion, However, precautions must be taken to prevent excess dose of hydrazine chemical as excess hydrazine will begin to decompose at temperature above 200oC to form Ammonia.
Hydrazine is one of popular an alternative Oxygen Scavenger. It is very important to protect boiler components from feed boiler water corrosion.
Test Procedure ::: rxmarine.com/hydrazine-test-kit
