A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization

›› 2011, Vol. 19 ›› Issue (3): 452-461.

• PROCESS SYSTEMS ENGINEERING • Previous Articles Next Articles

A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization

BIAN Haijun, XU Wendong, LI Xiuxi, QIAN Yu

School of Chemistry and Chemical Engineering, the State Key Lab for Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China

Received:2010-09-30 Revised:2011-02-22 Online:2011-06-28 Published:2011-06-28
Supported by:
Supported by the National Natural Science Foundation of China(20876056,20536020);the PhD Program Fund from Ministry of Education of China(20100172110016)

A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization

边海军, 徐文东, 李秀喜, 钱宇

School of Chemistry and Chemical Engineering, the State Key Lab for Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China

通讯作者: QIAN Yu, E-mail: ceyuqian@scut.edu.cn
基金资助:
Supported by the National Natural Science Foundation of China(20876056,20536020);the PhD Program Fund from Ministry of Education of China(20100172110016)

Abstract

Abstract: A novel process to recovery natural gas liquids from oil field associated gas with liquefied natural gas (LNG)cryogenic energy utilization is proposed.Compared to the current electric refrigeration process,the proposed process uses the cryogenic energy of LNG and saves 62.6%of electricity.The proposed process recovers ethane, liquid petroleum gas(propane and butane)and heavier hydrocarbons,with total recovery rate of natural gas liquids up to 96.8%.In this paper,exergy analysis and the energy utilization diagram method(EUD)are used to assess the new process and identify the key operation units with large exergy loss.The results show that exergy efficiency of the new process is 44.3%.Compared to the electric refrigeration process,exergy efficiency of the new process is improved by 16%.The proposed process has been applied and implemented in a conceptual design scheme of the cryogenic energy utilization for a 300 million tons/yr LNG receiving terminal in a northern Chinese harbor.

Key words: liquefied natural gas, utilization of cryogenic energy, recovery of natural gas liquids, exergy analysis

摘要： A novel process to recovery natural gas liquids from oil field associated gas with liquefied natural gas (LNG)cryogenic energy utilization is proposed.Compared to the current electric refrigeration process,the proposed process uses the cryogenic energy of LNG and saves 62.6%of electricity.The proposed process recovers ethane, liquid petroleum gas(propane and butane)and heavier hydrocarbons,with total recovery rate of natural gas liquids up to 96.8%.In this paper,exergy analysis and the energy utilization diagram method(EUD)are used to assess the new process and identify the key operation units with large exergy loss.The results show that exergy efficiency of the new process is 44.3%.Compared to the electric refrigeration process,exergy efficiency of the new process is improved by 16%.The proposed process has been applied and implemented in a conceptual design scheme of the cryogenic energy utilization for a 300 million tons/yr LNG receiving terminal in a northern Chinese harbor.

关键词: liquefied natural gas, utilization of cryogenic energy, recovery of natural gas liquids, exergy analysis

BIAN Haijun, XU Wendong, LI Xiuxi, QIAN Yu. A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization[J]. , 2011, 19(3): 452-461.

边海军, 徐文东, 李秀喜, 钱宇. A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization[J]. , 2011, 19(3): 452-461.

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A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization

A Novel Process for Natural Gas Liquids Recovery from Oil Field Associated Gas with Liquefied Natural Gas Cryogenic Energy Utilization

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