差压热耦合蒸馏节能技术  

Different pressure thermally coupled distillation technology for energy saving

作　　者：李洪[1] 李鑫钢[1] 罗铭芳[2] 

机构地区：[1]天津大学化工学院,天津300072 [2]精馏技术国家工程研究中心,天津300072

出　　处：《化工进展》2008年第7期1125-1128,共4页Chemical Industry and Engineering Progress

摘　　要：开发了一种广泛适用于蒸馏分离过程的新型差压热耦合蒸馏技术,该技术将精馏塔分割为两个压力不同的塔,利用高压塔顶蒸汽作为低压塔底的热源,实现热能的耦合匹配,达到蒸馏过程大幅度节能的目的。利用计算机模拟方法对该技术应用在丙烯-丙烷分离和混合C4分离过程中的节能效果进行了计算和分析,结果表明与现有常规蒸馏过程相比,差压热耦合低能耗蒸馏过程能耗可以分别降低92.3%和87.1%,节能效果显著。A different pressure thermally coupled distillation technology was developed to achieve energy saving.In this technology,a distillation column was divided to two columns with different pressure.The top stream from the high-pressure column was used as the heat energy for the reboiling of the low-pressure column,therefore the thermal coupled process was realized.Computer simulation technology has been used to analyze the energy saving of different pressure thermally coupled distillation technology in separation of propane-propylene and C4’s hydrocarbon respectively.The results showed that,comparing with ordinary distillation technology,energy consuming could be reduced about 92.3% and 87.1% in these two separation process,respectively.

关 键 词：差压 热耦合 蒸馏 节能 

分 类 号：TQ028[化学工程]