Ammonium salt crystallization in the acidic gas outlet pipeline of the low-temperature methanol wash heat regeneration tower at Dalian University of Technology
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Have any of you who work in this field experienced the situation where, after the heat regeneration tower used in the low-temperature methanol process at Dalian University of Technology has been in operation for some time, ammonia salts begin to crystallize in the equipment and pipes before and after the water cooler and ammonia cooler, resulting in an increase in the pressure difference between these components? Are there any good solutions for this issue?
Please refer to the paper titled \"Causes of Ammonium Salt Crystallization in Low-Temperature Methanol Wash Systems and Their Impacts\". There are papers online
Strengthen the monitoring of the washing efficiency for the transformed gas, control the amount of water used for washing as well as the temperature; ensure sufficient flow rate and a low temperature； Increase the temperature of ammonia cooling appropriately, keeping it around -25; in this case, there is slightly more methanol loss