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PH OF FEED WATER COMES DOWN IN STEAM DRUM
- Thread starter pradeep4u
- Start date
Dhurjati Sen
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Hi Pradeep,
Why do we dose hydrazine / sodium sulphite at de-aerator upstream?
Its oxygen scavenger from the boiler feed water.
Why do we dose morpholine at de-aerator upstream?
It removes carbon dioxide from the boiler feed water.
Why do we dose sodium tri-phosphate in the steam drum?
There are some salts like calcium carbonate that have inverse solubility, i.e. they get deposited as the temperature goes up. Na3PO4 reacts with them to form salts which do not have inverse solubility. These are removed thru continuous and intermittent blowdowns, etc. etc.
Happy reading.
DHURJATI SEN
Why do we dose hydrazine / sodium sulphite at de-aerator upstream?
Its oxygen scavenger from the boiler feed water.
Why do we dose morpholine at de-aerator upstream?
It removes carbon dioxide from the boiler feed water.
Why do we dose sodium tri-phosphate in the steam drum?
There are some salts like calcium carbonate that have inverse solubility, i.e. they get deposited as the temperature goes up. Na3PO4 reacts with them to form salts which do not have inverse solubility. These are removed thru continuous and intermittent blowdowns, etc. etc.
Happy reading.
DHURJATI SEN
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