论文部分内容阅读
精馏塔与热口袋的集成优化可以进一步回收利用过程中的能量,当塔的热负荷大于热口袋所能提供的热负荷时,可以通过调整,增加中间换热器实现与热口袋的热集成。中间换热一般使用精馏塔与背景过程两者的总复合曲线(即温焓图)进行分析,但温焓图(T-H图)无法直接看出中间换热物流合适的抽出位置,不能使热集成达到最优化。故本文通过对某乙二醇装置的C08MEG塔进行全塔模拟,针对不同的中间换热工况,采用板焓图(Stage-H图)进行分析,最终确定了中间换热器的最优位置及负荷,使热集成的节能效益更显著。
The optimization of distillation column and hot pockets can further recycle the energy during the utilization process. When the thermal load of the tower is greater than the heat load provided by the hot pockets, the heat exchanger can be integrated with the hot pockets by adjusting and adding the intermediate heat exchanger . The intermediate heat exchange is generally analyzed using the total compound curve (ie, temperature enthalpy diagram) of both the rectification column and the background process, but the temperature enthalpy diagram (TH) can not directly identify the proper extraction location of the intermediate heat exchange stream, Integration to optimize. Therefore, this paper through a tower of C08MEG ethylene glycol plant full tower simulation for different intermediate heat transfer conditions, using the plate enthalpy diagram (Stage-H map) analysis, and ultimately determine the optimal location of the intermediate heat exchanger And load, so that energy-saving thermal integration more significant.