Flexibility analysis and design of heat exchanger network for syngas-to-methanol process

被引：5

作者：

Liu, Jinchang ^{[1
]}

Zhang, Pingping ^{[1
]}

Xie, Qiang ^{[1
]}

Liang, Dingcheng ^{[1
]}

Bai, Lei ^{[2
]}

机构：

[1] China Univ Min & Technol Beijing, Sch Chem & Environm Engn, D11 Xueyuan Rd, Beijing 100083, Peoples R China

[2] West Virginia Univ, Dept Chem & Biomed Engn, 395 Evansdale Dr,POB 6102, Morgantown, WV 26506 USA

来源：

INTERNATIONAL JOURNAL OF COAL SCIENCE & TECHNOLOGY | 2021年 / 8卷 / 06期

关键词：

Heat exchanger network; Syngas-to-methanol; Pinch technology; Flexibility analysis; Design; Optimization; INTEGRATION; ENERGY;

D O I：

10.1007/s40789-021-00426-4

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The heat exchanger network (HEN) in a syngas-to-methanol process was designed and optimized based on pinch technology under stable operating conditions to balance the energy consumption and economic gain. In actual industrial processes, fluctuations in production inevitably affect the stable operation of HENs. A flexibility analysis of the HEN was carried out to minimize such disturbances using the downstream paths method. The results show that two-third of the downstream paths cannot meet flexibility requirements, indicating that the HEN does not have enough flexibility to accommodate the disturbances in actual production. A flexible HEN was then designed with the method of dividing and subsequent merging of streams, which led to 13.89% and 20.82% reductions in energy consumption and total cost, respectively. Owing to the sufficient area margin and additional alternative heat exchangers, the flexible HEN was able to resist interference and maintain production stability and safety, with the total cost increasing by just 4.08%.

引用

页码：1468 / 1478

页数：11