![]() ![]() We have a sour fuel gas amine absorber where sour fuel gas from the refinery is treated with amine from the amine unit to strip out H2S. Why is there a need to use an air cooler in the overhead circuit of a distillation column? What's so special about it that a water based condenser cannot do it standalone? The delta temperature between amine and process gas is 12oC. ![]() Delta pressure of the column is also increasing and the level increases suddenly in the water tray even after isolating fresh water. The water tray level quickly fills and goes to the next recycle gas knockout drum. At thr top of the column, a water wash facility with level tray is installed to wash lean amine from recycle gas. It has one HP amine absorber to absorb H2S from recycle gas. In a sponge absorber why is absorption of LPG by lean oil (naphtha) an exothermic reaction?
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