Condensate treatment
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What are the treatment systems for condensate water? Also, is it necessary to treat the condensate if it is used to cool superheated steam?
Condensate water is mainly recovered and reused. If the condensate is used to cool superheated steam, no treatment is required.
The condensate water system consists of the following components: air-cooled condenser, condenser hot well, condensate pump, condensate water polishing unit, shaft seal heater, three-stage regenerative heater, deaerator, minimum flow recirculation device, condensate water make-up system, as well as system pipes and valves. Agree with the suggestion from wsm1988 above! Condensate used for cooling superheated steam requires no treatment.
The key is to determine what specific impurities are present in the condensate and affect its usability; for reusing it in boilers, systems for removing oil, iron, salts, and oxygen, along with related components, are generally required.
This post was last edited by dongjiang1001 on 2012-4-4 21:37. I agree with what was said above; whether treatment is necessary depends on the specific quality of the water. It’s best to conduct regular tests during the initial stage to decide whether treatment is required, as the conditions vary from one factory and process to another.
I think the condensate water used for spray cooling needs to be treated； Because under normal circumstances, the water used for spray cooling is sent in after being deoxygenated and pumped by the feed water pump.
This post was last edited by gjn1970 on 2012-4-4 22:49. Condensate treatment involves filtration through covered filters, followed by further purification (desalination) using high-speed mixed-bed reactors; after that, deoxidation is carried out using deoxidizers to produce boiler feed water (with high-pressure heaters following thereafter). The superheated steam desuperheating water comes from the boiler feedwater at the outlet of the boiler feedwater pump; the feedwater has already been processed by the aforementioned equipment (heating, filtering, desalination, deoxygenation). Of course, before the cover filter, there are a low-pressure heater, an shaft seal cooler, and a condensate pump, as mentioned on the third floor.
A composite membrane condensate oil and iron removal system can be used.