三甲苯精馏分离的节能研究  

Study on energy saving in trimethylbenzene distillation

作　　者：辛江[1] 黄国强[1] 李鑫钢[1] 张津[2] 

机构地区：[1]天津大学化工学院精馏技术国家工程研究中心,天津300072 [2]锦州石化精细化工有限公司,辽宁锦州121001

出　　处：《现代化工》2007年第3期52-54,56,共4页Modern Chemical Industry

摘　　要：以三甲苯精密精馏过程为实施案例,对多塔分离过程提出了热集成节能工艺。结合PRO/II软件对三甲苯分离三塔流程进行了模拟计算和节能优化,所得模拟结果与工业试验数据吻合良好。针对原有常压工艺难以实现热集成和能耗较高的运行现状,采用差压技术有效地实现了精馏流程的热集成。通过模拟计算得到了热集成的压强操作条件,并与原有常压工艺相比较,在不降低产品质量和收率的前提下,节能超过35%以上。Taking trimethylbenzene precise distillation for example, a new heat integration technology for energy saving was put forward.Trimethylbenzene three-column distillation had been established and simulated by applying the software PRO/Ⅱ , and the results showed that the data of simulation agreed with the actual process well and the simulative process was accurate enough. Compared with the former process which operated under normal pressure, the new process under differential pressure could make good use of the heat integration. With the heat load as an objective process and the pressure as optimal parameters, the energy-saving for the distillation system would be carried out by the new process. The simulative results indicated that the new process with that heat integration technology could save energy more than 35%.

关 键 词：热集成 精馏 三甲苯 PRO/Ⅱ软件 节能 模拟 

分 类 号：TQ241.15[化学工程—有机化工]