Regarding the issue of reusing water extracted from acidic vapors in exhaust gas treatment
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Generally, acidic stripping water is sent to wastewater treatment systems. There is information from abroad indicating that this water can be used as a supplement to non-circulating water or as water for boilers. I wonder if anyone has any good experiences in this regard.
So far, there are no reports of it being used in China
In our factory, the water that has been aerated is sent to upstream facilities for use as washing water. Actually, I’m not quite sure about the quality of this aerated water or what its various parameters are; I was wondering if those of you who are more familiar with this topic could share some information. Thank you!
Since it is softened water, it is generally reused in refineries as water for electrodeionized water washing
We are also mainly used for the electrodesalination water injection of crude oil.
Is the author referring to the acidic water from the sulfur recovery flue gas treatment unit? Our factory sends this water to the sewage tank for sewage stripping
The treated water has an ammonia nitrogen level of no more than 100 and a sulfide level of no more than 50, making it suitable for use as washing water and water for electrodesorption.
We also transport the purified water after air stripping to the desalination station, where it is processed for use as boiler water in the facilities
Our current parameters are 50 for hydrogen sulfide and 80 for ammonia nitrogen; after being sent out, it is mainly used for water injection in atmospheric and vacuum distillation units, diesel hydrogenation processes, and gas holders. It seems that some plants also use it for washing catalytic rich gas. The reuse rate is not very high, only around 50%. However, I’ve heard that in some advanced companies, the reuse rate can reach 80–90%. I’d really like to hear the introduction.
It can be used for feedwater in atmospheric and vacuum electrodialysis desalination, feedwater in hydrogenation units, and coking wash water