化工进展

• 化工过程与装备 • 上一篇    下一篇

煤制合成天然气装置能耗分析与节能途径探讨

刘永健1,2,何 畅1,冯 霄1,王季秋2,李安学2   

  1. 1中国石油大学化学工程学院,北京 102249;2辽宁大唐国际阜新煤制天然气有限责任公司,辽宁 阜新 123000
  • 出版日期:2013-01-05 发布日期:2013-01-25

Analysis of energy consumption and energy saving approach in a coal to SNG plant

LIU Yongjian1,2, HE Chang1, FENG Xiao1,WANG Jiqiu2, LI Anxue2   

  1. 1Faculty of Chemical Science and Engineering, China University of Petroleum, Beijing 102249,China; 2Liaoning Datang International Fuxin Coal-To-SNG Co., Ltd., Fuxin 123000,Liaoning,China
  • Online:2013-01-05 Published:2013-01-25

摘要: 煤制天然气系统的节能减排研究对大力推进我国煤制天然气示范项目发展具有重要意义。本文对典型煤制天然气项目的全系统用能状况进行评估和分析,确定了各单元的物料和能耗水平,结果表明煤气化和自备电厂能耗较为突出。指出了重要单元过程的技术创新,如新型BGL煤气化技术和等温/低温甲烷化技术等,全系统能量梯级利用与换热网络集成以及高效的能源管理系统,是提高煤制天然气项目整体用能效率的三种重要途径。本文可以为煤制天然气行业的节能减排方案的制定提供科学指导和依据。

关键词: 合成天然气, 节能减排, 技术创新, 换热网络集成

Abstract: The study on energy saving has an important significance for promoting the development of china’s coal to synthetic natural gas (SNG) demonstration project. The paper analyzes the energy utilization of a typical coal to SNG plant and determines the energy/materials consumption of each unit process, and the results show that coal gasifier and captive power plant are more prominent. It is pointed out that the following three ways, technological innovation of key process, e.g., BGL(British Gas-Lurgi) gasifier and low/isothermal temperature methanation reactor; cascade utilization of energy and heat exchanger network integration; as well as an efficient energy management system, would be of significant for improving the energy efficiency. This paper provides an insight into analysis and guidance in determining the optimal schemes for energy saving in coal to SNG plants.

Key words: synthetic natural gas, energy saving, technological innovation, exchanger network integration