Study on co-feed and co-production system based on coal and natural gas for producing DME and electricity

被引：58
|
作者：
Zhou, Li [1 ]
Hu, Shanying [1 ]
Li, Yourun [1 ]
Zhou, Qihong [1 ]
机构：
[1] Tsinghua Univ, Dept Chem Engn, Beijing 100084, Peoples R China
来源：
CHEMICAL ENGINEERING JOURNAL | 2008年 / 136卷 / 01期
关键词：
coal; natural gas; DME; co-feed and co-production; simulation;
D O I：
10.1016/j.cej.2007.03.025
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
China, an oil and NG scarcity country, is coal dependent, and this situation will remain for a long time. DME, as an ideal replacer of liquid fuel, is considered to develop. The efficient way of producing DME from coal is under research. Considering the components of coal and natural gas (NG), we choose co-feed (coal and NG) and co-production (electricity and DME) system (Co-Co system) to be studied on. Three systems which are the standalone system, co-generation system and Co-Co system are simulated by Aspen-Plus. The simulation results concerning material flows, exergy flows, CO2 emission and the evaluation indexes are obtained. It is found that Co-Co system has higher exergy efficiency, higher economic benefit, and it is environmental friendly because of releasing the least CO2. The analysis illustrates that Co-Co system has obviously advantage over the other two kinds of systems. (C) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：31 / 40
页数：10
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