What is the role of the steam extracted from the pressurized side line of the single tower and the purified water returned to the stripping tower in the top gas removal process?
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What is the role of the single-tower pressurized side-line extraction stripper, as well as the return of purified water to the stripper top?
It would be best to provide a flowchart to facilitate discussion.
To further remove ammonia from the acidic gas at the top of the tower, cold acidic water is usually used for absorption; when this method is not effective, purified water is employed. Purified water is generally not used, as it leads to higher energy consumption; it is only used as a backup option.
Why does using purified water cause an increase in energy consumption, according to the senior?
Using purified water as wash water to return it to the tower is equivalent to a second treatment of the purified water, which increases the amount of processing required and leads to greater steam consumption.