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Direct steam injection into cooling water line at pump suction

Question asked by Tinakaran Tangharaja in #Coffee Room on Sep 10, 2019
Tinakaran Tangharaja
Tinakaran Tangharaja · Sep 10, 2019
Rank E2 - BEGINNER

Currently there is an operation scenario at one of our plant which directly injecting steam into cooling water line at pump suction in order to generate hot water at 60 deg C for circulation, by doing this its generate vapor at pump suction and lead to cavitation which ultimately damage pump and mechanical seals. Please advise better solution to this rather than installing a heat exchanger.

Posted in: #Coffee Room
Ramani Aswath
Ramani Aswath · Sep 10, 2019
Rank A1 - PRO

Inject into the delivery side of the pump. The steam pressure should be above the pump outlet pressure for this to happen. Alternatively, inject steam into the water reservoir using a thermostat to maintain the temperature at the level needed.

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