Energy optimization analysis of internal thermally coupled air separation columns

CHANG Liang; LIU Xinggao

doi:10.3969/j.issn.0438-1157.2012.09.042

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Energy optimization analysis of internal thermally coupled air separation columns

更新时间：2025-12-10

- Energy optimization analysis of internal thermally coupled air separation columns
- CIESC Journal Issue 9, Pages: 2936-2940(2012)
- 作者机构：
  
  浙江大学控制系工业控制技术国家重点实验室,浙江,杭州,310027
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2012.09.042
  CLC： Q051.81
- Online First：05 September 2012，
  
  Published：05 September 2012
- 稿件说明：
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CHANG Liang, LIU Xinggao. Energy optimization analysis of internal thermally coupled air separation columns[J]. CIESC Journal, 2012, (9): 2936-2940.
DOI：

CHANG Liang, LIU Xinggao. Energy optimization analysis of internal thermally coupled air separation columns[J]. CIESC Journal, 2012, (9): 2936-2940. DOI： 10.3969/j.issn.0438-1157.2012.09.042.

摘要

内部热耦合精馏是迄今为止所提出的节能效果最好

而唯一没有商业化的节能技术。将内部热耦合技术用于空分塔

可以带来良好的节能效果。根据低温空气分离过程以及三组分精馏的特点

提出了一种新的内部热耦合空分精馏塔优化模型。在优化模型基础上

对热耦合塔进行了深入的节能优化与分析

并且与常规空分仿真结果进行了比较分析

压缩机能耗下降20.75%

产值增加17.46%

单位产值能耗下降32.53%。内部热耦合空分塔的提取率以及能耗均优于常规热耦合空分塔

节能效果显著。

Abstract

Internal thermally coupled distillation column(ITCDIC)is the most promising distillation energy-saving technology.It can save more than 40% energy compared with traditional distillation process

but so far it has not been widely used.The application of the ITCDIC technology in air separation column can bring a good energy saving effect.Based on the characteristic of cryogenic air separation process as well as three-component distillation

a new optimization model of internal thermally coupled air separation columns(ITCASC)is presented.Analysis of energy consumption is carried out detailed.Compared with the conventional air separation columns(CASC)

compressor energy consumption decreases by 20.75%

the product value increases by 17.46% and energy consumption per unit of output decreases by 32.53%.The extraction rate and energy consumption of ITCASC are superior to conventional air separation columns.

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