Application of CO2 capture technology before burning in IGCC power generation system

doi:10.3969/j.issn.0438-1157.2014.08.047

CIESC Journal ›› 2014, Vol. 65 ›› Issue (8): 3193-3201.DOI: 10.3969/j.issn.0438-1157.2014.08.047

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Application of CO₂ capture technology before burning in IGCC power generation system

CHEN Xinming^1,2,3, SHI Shaoping^1,2, YAN Shu^1,2, FANG Fang^1,2, XU Shisen^1,2, DUAN Liqiang³

1 Huaneng Clean Energy Research Institute, Beijing 102209, China;
2 State Key Laboratory of Coal-Based Clean Energy, Beijing 102209, China;
3 School of Energy, Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China

Received:2013-10-28 Revised:2013-12-09 Online:2014-08-05 Published:2014-08-05
Supported by:
supported by the Beijing Plan of Science and Technology (Z131100002413012), the National High Technology Research and Development Program of China (2011AA050602) and the National Natural Science Foundation of China(51276063).

燃烧前CO₂捕集技术在IGCC发电中的应用

陈新明^1,2,3, 史绍平^1,2, 闫姝^1,2, 方芳^1,2, 许世森^1,2, 段立强³

1 中国华能集团清洁能源技术研究院有限公司, 北京 102209;
2 煤基清洁能源国家重点实验室, 北京 102209;
3 华北电力大学能源动力与机械工程学院, 北京 102206

通讯作者: 闫姝
基金资助:
北京市科技计划项目（Z131100002413012）；国家高技术研究发展计划项目（2011AA050602）；国家自然科学基金项目（51276063）。

Abstract

Abstract: Integrated gasification combined cycle (IGCC) power generation is an advanced and next generation coal-fired power generation technology, can provide clean and low-cost electricity for the users, and will play an important role in the future development of high-efficiency and zero-emissions power plants. CO₂ capture technology before burning should be very suitable for IGCC system. Based on IGCC technical features, a CO₂ capture process before burning, consisting of MDEA acid gas removal and wet oxidation sulfur recovery steps, is proposed in this paper. The feasibility study of application in IGCC system is verified by process simulation calculation. The results show that this process works well for acid gas removal, and the efficiency for separating CO₂ and H₂S from syngas can reach 99% and 98.5% respectively. However, the overall efficiency of power supply by IGCC, obtained by calculation, declines about 10 percent from 45.35% to 35.16%, when the CO₂ capture process before burning is introduced into IGCC system. The three main factors of decrease of total efficiency are steam consumption, fuel chemical energy loss and new auxiliary power increase, and they could be used for determining optimization direction.

Key words: IGCC, syngas, pre-combustion, CO₂ capture, MDEA, wet oxidation sulfur recovery, simulation

摘要： 由于整体煤气化联合循环（IGCC）发电本身的技术特点，使得其非常适合于进行燃烧前CO₂捕集。针对IGCC特点，提出了一种MDEA脱酸气结合湿法氧化法硫回收的燃烧前CO₂捕集流程。通过模拟计算，验证了流程的可行性。将其与IGCC发电系统集成，对比计算了有无燃烧前CO₂捕集的IGCC系统供电效率等相关参数，燃烧前CO₂捕集使IGCC供电效率降低约10个百分点。分析指出了导致包含燃烧前CO₂捕集的IGCC供电效率降低的3个因素：蒸汽消耗、燃料化学能损失和新增动力设备电耗，并据此确定了今后的优化方向。

关键词: IGCC, 合成气, 燃烧前, 二氧化碳捕集, MDEA, 湿法氧化硫回收, 模拟

CLC Number:

TK123

CHEN Xinming, SHI Shaoping, YAN Shu, FANG Fang, XU Shisen, DUAN Liqiang. Application of CO₂ capture technology before burning in IGCC power generation system[J]. CIESC Journal, 2014, 65(8): 3193-3201.

陈新明, 史绍平, 闫姝, 方芳, 许世森, 段立强. 燃烧前CO₂捕集技术在IGCC发电中的应用[J]. 化工学报, 2014, 65(8): 3193-3201.

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Application of CO₂ capture technology before burning in IGCC power generation system

燃烧前CO₂捕集技术在IGCC发电中的应用

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