石油石化绿色低碳2025，Vol.10Issue(4)：21-24,37,5.DOI:10.20131/j.cnki.syshlsdt.20250806.002
低温热耦合甲醇精馏技术的原理及实践
Principle and Practice of a New Methanol Distillation Process Utilizing Low Grade Heat
李士雨 1宋秉棠 2吴世凯3
作者信息
- 1. 广东工业大学,广东 揭阳 515231||广东省化学与精细化工实验室揭阳分中心,广东 揭阳 515231||天津华赛尔传热设备有限公司,天津 301721
- 2. 天津华赛尔传热设备有限公司,天津 301721
- 3. 河南龙宇煤化工有限公司,河南永城 476626
- 折叠
摘要
Abstract
A new methanol distillation process utilizing low grade heat was proposed and demonstrated.This new process is featured by,firstly,interconnection of five distillation columns,i.e.precolumn,high pressure column,atmospheric column,vacuum column and recovery column.The high-pressure column and atmospheric column are parallel connected,followed by vacuum column and then recovery column.The high-pressure column and atmospheric column are designed as double-effect columns,all of which utilize low grade heat as reboiler heating energy.Secondly,the vacuum column has been equipped an inner heat exchanger at proper position enabling the use of lower grade heat,for example,the heat from the atmospheric column top condenser.Thirdly,an ejector is applied to generate vacuum.Fourthly,the high performance heat exchanger is use to reduce the temperature difference.The novel process was demonstrated in a 500 kt/a methanol distillation system,which reduced the steam consumption from 1.0 to 0.2 t steam/t methanol.This new process also yields methanol of improved purity,Moreover,this new process offers a high flexibility and increases the productivity by 20%.关键词
甲醇精馏/低温热利用/能效/减碳/碳中和/醋酸Key words
methanol distillation/low grade heat utilization/energy efficiency/CO2 reduction/carbon neutrality/acetic acid分类
化学化工引用本文复制引用
李士雨,宋秉棠,吴世凯..低温热耦合甲醇精馏技术的原理及实践[J].石油石化绿色低碳,2025,10(4):21-24,37,5.
