【作者】 吴现力； 胡仰栋； 高澄； 伍联营；

【Author】 Wu Xianli1,Hu Yangdong1,Gao Cheng2,Wu Lianying1 (1. Department of Chemical Engineering, Ocean University of China, Qingdao, 266100, China; 2. TDI Co., Ltd., Cangzhou Dahua (Group) Company, Cangzhou, 061000, China)

【机构】 中国海洋大学化学化工学院； 沧州大化TDI有限责任公司；

【摘要】 对TDI生产中现有的光气回收工艺进行了分析,提出了无压缩机的光气回收新工艺。该工艺增加了深冷器,使大部分的光气冷凝为液相返回到光气化回路。剩余少量光气和脱气塔、气提塔来的光气用吸收塔进行吸收。经Aspen模拟,新工艺能够满足工艺要求,减少了设备投资,降低了系统的能耗。更多还原

【Abstract】 According to the analysis of present phosgene recovery system in TDI production, a new process for phosgene recovery was proposed. In this new process, a deep freezer was bought in the system, which condensed most of phosgene into liquid. The remaining phosgene accompanied with the gas from degasser and HCl stripper was absorbed by an atmospheric absorption tower. The compression system was reduced. The new process was simulated by Aspen Plus simulation software. It can meet the technological requirement, reduce the energy consumption.更多还原