Application Note
Monitoring Of Hydrazine And Other Oxygen Scavengers In Boiler Water
Source: Hach Company
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•Application Note: Monitoring Of Hydrazine And Other Oxygen Scavengers In Boiler Water
By Hach Company
The main objective when adding hydrazine in the boiler feedwater is to prevent dissolved oxygen corrosion effects. Hydrazine holds a dual function in boiler water chemistry:
- Firstly, it eliminates dissolved oxygen (oxygen scavenger). The product of reaction between hydrazine and oxygen is nitrogen (N2H4 + O2 --> N2 + 2H2O) which has no negative effect on the boiler and turbine operation.
- Secondly, the residual hydrazine, once heated in the boiler decomposes to ammonia (3N2H4 --> N2 + 4NH3) which is a chemical used in boiler water treatment.
•Application Note: Monitoring Of Hydrazine And Other Oxygen Scavengers In Boiler Water
