Integration of a gas turbine with an ammonia process for improving energy efficiency

被引：19

作者：

Sahafzadeh, Meysam ^{[1
]}

Ataei, Abtin ^{[2
]}

Tahouni, Nassim ^{[1
]}

Panjeshahi, M. Hassan ^{[1
,3
]}

机构：

[1] Univ Tehran, Coll Engn, Sch Chem Engn, Tehran, Iran

[2] Islamic Azad Univ, Dept Energy Engn, Grad Sch Environm & Energy, Sci & Res Branch, Tehran, Iran

[3] Univ Calgary, Dept Chem & Petr Engn, Calgary, AB T2N 1N4, Canada

来源：

APPLIED THERMAL ENGINEERING | 2013年 / 58卷 / 1-2期

关键词：

Ammonia process; Combined pinch and exergy; Gas turbine; Heat integration; Tri-generation; EXERGY ANALYSIS; COMBINED PINCH; HEAT; OPTIMIZATION; ETHANOL; SYSTEMS; DESIGN; PLANT;

D O I：

10.1016/j.applthermaleng.2013.05.006

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

This paper is intended to investigate how one can improve the overall energy efficiency of an ammonia process. A gas turbine is integrated with the process to reduce the exergy loss associated with ammonia synthesis loop and produce electricity. Combined Pinch and Exergy Analysis is applied to identify how exergy loss is distributed throughout heat transfer process. This is needed to find appropriate placement for gas turbine integration. Having introduced an exergy loss index for the whole plant, including the heat transfer process and gas turbine system, optimum shaftwork can be generated through recovering part of the exergy loss. Eventually, heat integration of the process streams is done to reduce additional consumption of high pressure steam caused by temperature drop in gas turbine. The results show that 4 MW of electricity can be produced in exchange of adding 7350 kW of high pressure steam. Total amount of exergy loss is reduced by 3323 kW, which indicates 19% reduction compared to the existing process. Based on the economic data, the net income is estimated to be 2,549,653 US$/y with 3 years payback. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：594 / 604

页数：11

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