关键词: 整体煤气化联合循环技术, 二氧化碳, 捕集, 燃烧前脱碳技术, 溶剂吸收法

Abstract: Global warming and CO2 emission reduction has become one of the most critical issues in recent years，due to further deterioration of natural environment，economic development and even survival of mankind. A promising approach for near-zero CO2 emission power plants to be realized within the near future is the IGCC technology （integrated gasification combined cycle） with pre-combustion CO2 capture. In order to provide a technical basis，this paper introduces the current situation of pre-combustion technology and makes a comparison of various CO2 recovery methods，such as adsorption，membrane and absorption process. On the basis of IGCC characteristics，the paper pays special attention to the application range and prospect of existing solvent-absorption technologies，and makes an analysis to point out the possibility of cost reduction from three aspects：selecting a new efficient solvent，optimizing traditional regeneration process，and developing certain coupling technologies. Furthermore，the challenges and trend of decarbonization technology development are discussed.

Key words: IGCC, carbon dioxide, capture, pre-combustion, solvent absorption