水合物法分离二氧化碳的研究现状

化工进展

水合物法分离二氧化碳的研究现状

徐纯刚1，2，李小森1，陈朝阳1

1中国科学院广州能源研究所天然气水合物开采及综合利用实验室，中国科学院可再生能源与天然气水合物重点实验室，广东广州 510640；2中国科学院研究生院，北京 100049

出版日期:2011-04-05 发布日期:2011-04-05

Research on hydrate-based carbon dioxide separation

XU Chungang1，2，LI Xiaosen1，CHEN Zhaoyang1

1Key Laboratory of Renewable Energy and Gas Hydrate，Chinese Academy of Sciences，Guangzhou Institute of Energy Conversion，Guangzhou 510640，Guangdong，China；2Graduate School，Chinese Academy of Sciences，Beijing 100049，China

Online:2011-04-05 Published:2011-04-05

摘要/Abstract

摘要：

介绍了利用水合物法从火力发电厂排放的烟气和从整体煤气化联合循环发电系统（IGCC）合成气中分离二氧化碳（CO₂）的研究及发展现状，包括水合物形成促进剂和添加剂的选择，水合物分离捕集工艺以及成本核算。TBAB和THF在研究中证明能有效地提高水合物形成速度、降低反应压力、提高CO₂的分离捕集效率。在此基础上，提出了不同的分离捕集工艺，这些工艺都是以水合物法分离为主，结合化学吸附法或者膜分离法而展开。通过与传统的化学吸附法的成本核算做比较，发现水合物法分离捕集每吨CO₂的成本约为USD 26，比化学吸附法要便宜约31%，并且随着水合物法研究的进一步深入，水合物法分离捕集CO₂的成本还可能进一步降低，显示了未来的工业应用中有光明的前景。

Abstract:

The present situation and research on hydrate-based carbon dioxide separation from the flue gases emitted from fossil fuel power plants or from the IGCC syngas are introduced in this paper，including selection of the promoter or the additive，CO₂ separation and capture process，and cost accounting. TBAB and THF are found to be the effective promoter and additive to improve rate of hydrate formation，to reduce the operating pressure，and to enhance CO₂ recovery. Based on the research of TBAB and THF，hydrate separation and capture processes combined with chemical absorption or membrane separation are proposed. The cost of capturing 1 ton CO₂ of the proposed process is about USD 26，which is lower than simply chemical absorption by about 31%. With further research，the cost can be reduced and the hydrate based CO₂ separation and capture process could be promising in future.

徐纯刚1，2，李小森1，陈朝阳1. 水合物法分离二氧化碳的研究现状 [J]. 化工进展.

XU Chungang1，2，LI Xiaosen1，CHEN Zhaoyang1. Research on hydrate-based carbon dioxide separation[J]. Chemical Industry and Engineering Progree.