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差压热耦合蒸馏节能技术
2013-03-20 17:17:02 益择发布李 洪1，李鑫钢1,2，罗铭芳2
（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）
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。
关键词：差压；热耦合；蒸馏；节能
中图分类号：TQ 028 文献标识码：A 文章编号：1000–6613（2008）07–1125–04
Different pressure thermally coupled distillation technology for energy
saving
LI Hong1，LI Xingang1,2，LUO Mingfang2
（1School of Chemical Engineering and Technology，Tianjin University，Tianjin 300072，China；2 National Engineering
Research Center for Distillation Technology，Tianjin 300072，China）
Abstract：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.
Key words：different pressure；thermally coupled；distillation；energy saving
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