There are problems with ammonia absorption refrigeration
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Dear colleagues, are there any companies that use ammonia absorption refrigeration systems? In our plant, we face a series of problems with ammonia absorption refrigeration: it is difficult to cool the ammonia gas at the outlet of the distillation tower, there are leaks in the heat exchange tubes of the air coolers, and there is continuous air leakage in the pipelines for transporting liquid ammonia, which results in insufficient cooling capacity for the low-temperature methanol washing process. Do you have any good suggestions or methods to solve these issues?
Our absorption refrigeration system also faces such problems; especially in summer, the ammonia gas at the top of the tower cannot be cooled properly, leading to severe corrosion of the absorbers. Six out of the eight absorbers have already been replaced, and the liquid ammonia used in distillation is not pure enough