Re: dissolved oxgyen in boiler

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Posted by Rick on April 22, 2000 at 09:03:34:

In Reply to: dissolved oxgyen in boiler posted by bruce on April 22, 2000 at 04:59:17:

: do most water treatment companies test for dissolved oxgyen in boiler,and what is the cause,and the solution.

With proper deaeration there should be no dissolved oxygen in the boiler water. Dissolved oxygen is removed in the deaerating feedwater heater. Testing for DO in the deaerator should be performed at regular intervals and preferably at maximum load on the deaerator. The Heat Exchange Institute sets the standards deaerators and by design a deaerator should produce water having an oxygen content of 7 - 10 ppb as dissolved oxygen. The balance of the oxygen is removed with an oxygen scavenger such as sodium sulfite.

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