提出了合成氨弛放气的氨吸附分离流程,通过模拟计算,分析和比较了脱附温度及冷却水温度对吸附剂用量、吸附热及脱附热的影响.结果表明,当冷却水温度一定时,随着脱附温度的升高,吸附剂用量、吸附热、脱附热均存在一个突变点,突变点前后的变化趋势是一致的,均随着脱附温度的升高而增加.脱附温度选在突变点右侧附近,吸附剂用量、吸附热、脱附热均较低.与现行的驰放气氨吸收分离流程相比,吸附分离法的能耗和(火用)耗以及冷却水用量均显著低于吸收分离法,具有突出的优势.%Adsorption separation process of ammonia recovery from ammonia synthesis purge gas was put forward. Through simulation and calculation the influence of desorption temperature and cooling-water temperature on the mass of absorbent, adsorption heat and desorption heat were analyzed and compared. The results indicated that both the mass of adsorbent and the heat consumption had a catastrophe point while the cooling-water temperature was given. And they all increased with the increase of desorption tem-perature. When the desorption temperature is about the right of catastrophe point. The mass of adsorbent and the heat consumption was lower. Furthermore, the result of the compare between adsorption separation and absorption separation indicated that both the energy consumption and the cooling-water dosage of for-mer was distinctly lower than the later, adsorption separation had outstanding advantage than absorption separation.
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