Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant

As an essential part of Heat Integration, the heat exchanger network (HEN) plays a vital role in large-scale industrial fields. The optimisation of HEN can increase energy efficiency and considerably save the operating and investment cost of the project. This study presents a novel approach for simu...

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Autores principales:	Yang Zhang, Bohong Wang, Yongtu Liang, Meng Yuan, Jirí Jaromír Klemeš
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/f91447e413c5466792922860c417c960
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spelling	oai:doaj.org-article:f91447e413c5466792922860c417c9602021-11-15T21:48:55ZSimultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant10.3303/CET21880262283-9216https://doaj.org/article/f91447e413c5466792922860c417c9602021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11819https://doaj.org/toc/2283-9216As an essential part of Heat Integration, the heat exchanger network (HEN) plays a vital role in large-scale industrial fields. The optimisation of HEN can increase energy efficiency and considerably save the operating and investment cost of the project. This study presents a novel approach for simultaneous optimisation of plant operating variables and the HEN structure of an existing natural gas purification process. The objective function is the total energy consumption of the studied process. A two-stage method is developed for optimisation. In the first stage, a particle swarm optimisation (PSO) algorithm is developed to optimise variables including tower top pressure, tower bottom pressure, and reflux ratio on the HEN, thereby changing the initial temperatures of cold and hot streams in the HEN. In the second stage, a shifted retrofit thermodynamic grid diagram (SRTGD)-based model and the corresponding solving algorithm was applied to retrofit the HEN. The case study shows that the optimal operating conditions of towers and temperature spans of heat exchangers can be solved by the proposed method to reduce the total energy consumption. The case study shows that the total energy consumption is reduced by 41.5 %.Yang ZhangBohong WangYongtu LiangMeng YuanJirí Jaromír KlemešAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Yang Zhang Bohong Wang Yongtu Liang Meng Yuan Jirí Jaromír Klemeš Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant
description	As an essential part of Heat Integration, the heat exchanger network (HEN) plays a vital role in large-scale industrial fields. The optimisation of HEN can increase energy efficiency and considerably save the operating and investment cost of the project. This study presents a novel approach for simultaneous optimisation of plant operating variables and the HEN structure of an existing natural gas purification process. The objective function is the total energy consumption of the studied process. A two-stage method is developed for optimisation. In the first stage, a particle swarm optimisation (PSO) algorithm is developed to optimise variables including tower top pressure, tower bottom pressure, and reflux ratio on the HEN, thereby changing the initial temperatures of cold and hot streams in the HEN. In the second stage, a shifted retrofit thermodynamic grid diagram (SRTGD)-based model and the corresponding solving algorithm was applied to retrofit the HEN. The case study shows that the optimal operating conditions of towers and temperature spans of heat exchangers can be solved by the proposed method to reduce the total energy consumption. The case study shows that the total energy consumption is reduced by 41.5 %.
format	article
author	Yang Zhang Bohong Wang Yongtu Liang Meng Yuan Jirí Jaromír Klemeš
author_facet	Yang Zhang Bohong Wang Yongtu Liang Meng Yuan Jirí Jaromír Klemeš
author_sort	Yang Zhang
title	Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant
title_short	Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant
title_full	Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant
title_fullStr	Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant
title_full_unstemmed	Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant
title_sort	simultaneously retrofit of heat exchanger networks and towers for a natural gas purification plant
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/f91447e413c5466792922860c417c960
work_keys_str_mv	AT yangzhang simultaneouslyretrofitofheatexchangernetworksandtowersforanaturalgaspurificationplant AT bohongwang simultaneouslyretrofitofheatexchangernetworksandtowersforanaturalgaspurificationplant AT yongtuliang simultaneouslyretrofitofheatexchangernetworksandtowersforanaturalgaspurificationplant AT mengyuan simultaneouslyretrofitofheatexchangernetworksandtowersforanaturalgaspurificationplant AT jirijaromirklemes simultaneouslyretrofitofheatexchangernetworksandtowersforanaturalgaspurificationplant
_version_	1718426822328188928

Simultaneously Retrofit of Heat Exchanger Networks and Towers for a Natural Gas Purification Plant

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