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不凝性气体会增加一般蒸汽压缩式制冷系统功耗,削弱系统换热器换热性能,首先介绍了制冷系统不凝性气体的危害及其排除方法研究现状,以煤化工流程中常用的丙烯制冷系统为例,分析了不凝性气体的产生、分布以及对制冷系统的影响;针对丙烯系统不凝性气体的有效排除,通过二元混合气体的分凝分离原理,设计了一种有效分离不凝性气体并回收丙烯的的分离流程。通过不同工况的仿真模拟,发现该流程明显减少了不凝性气体排放过程中的丙烯流失量,展现了良好的节能减排效果。
Non-condensable gas will increase the power consumption of general vapor compression refrigeration system and weaken the heat exchange performance of the system heat exchanger. First of all, the harm of non-condensable gas in refrigeration system and the research status of its elimination methods are introduced. As an example, the generation and distribution of non-condensable gases and its influence on the refrigeration system are analyzed. For the effective elimination of non-condensable gases in propylene system, an effective separation method is designed based on the separation and separation principle of binary mixed gases Non-condensable gas and recovery of propylene separation process. Through the simulation of different working conditions, it was found that this process significantly reduces the amount of propylene loss during the non-condensable gas discharge and shows a good energy-saving and emission reduction effect.