摘要
基于已有典型工业挥发性有机物甲苯设计的一套冷凝法回收系统,对其进行数值模拟和优化设计。运用物性软件REFPROP对甲苯负荷及制冷系统性能进行了模拟。通过对系统的模拟计算,研究了冷却级蒸发温度、冷凝温度以及甲苯混合气体入口温度对该冷凝法甲苯回收系统的性能影响,并针对冷却级温度影响进行了经济性分析。在此基础上,提出了冷量回收的优化方案,并与原有方案进行了对比分析,为进一步优化设计提供了理论依据。优化结果表明:系统预冷级负荷降低69.6%,系统的能耗降低38.9%,COP增大61.4%,压缩机排气温度下降7.7℃。
According to the condensation recovery system for toluene which is one of the typical industrial volatile organic compounds, its numerical simulation and design optimization were researched in this paper. The property software REFPROP was applied in the simulation and calculation of the toluene condensation recovery system. Based on the simulation of the whole sys- tem, the effects of cooling stage evaporating temperature, condensing temperature and entrance temperature of mixed gas on per- formance of toluene recovery system, and the economic impact analysis of cooling temperature were studied and discussed. On the basis of this research, the proposed optimization cold recycling program was compared and analyzed with the original program, in order to provide a theoretical basis for further optimization design. The optimization results show6d that the pre - cooling load of system reduced by 69.6%, energy consumption decreased by 38.9%, COP increased by 61.4%, compressor discharge tempera- ture dropped by 7.7℃.
出处
《低温与超导》
CAS
北大核心
2015年第2期67-73,共7页
Cryogenics and Superconductivity
关键词
工业挥发性有机物
甲苯
冷凝法
冷量回收
Volatile organic compounds, Toluene, Condensation, Cold energy recovering
