摘要
基于我国向低碳能源过渡时期所面临的以高碳能源为主的能源结构与绿色、低碳发展迫切需求之间的巨大矛盾,本文根据绿色碳科学的概念,提出了"天然气耦合煤炭的低碳能源系统"的设想,即根据我国煤层气、页岩气、致密气等天然气资源和煤炭资源地理分布的一致性,就地利用低碳高氢的天然气与高碳低氢的煤炭耦合制合成气,取消水煤气变换装置,提高系统的碳效和能效,使得碳氧化生成CO2反应发生于能源使用过程而非能源工业自身,最终实现二氧化碳的减排,使其成为近期我国向低碳能源过渡时期最有可能实现的低碳能源战略解决方案.在此基础上,构建了集成煤-天然气制油系统(CGTL)、集成煤-天然气制甲醇-MTG制汽油系统(CGTG)和集成微藻生物质-煤-天然气制油系统(BCGTL),并对其进行相应技术评价.
The contradiction between the current domination of China＇s energy sector by carbon-intensive resources and the urgent need for the development of green, low-carbon energy offers a great challenge for transition toward China＇s low-carbon era. Because of this challenge, based on the ＂green carbon science＂ concept, an integrated coal- and gas-based energy system is proposed as a possible solution to China＇s current carbon-intensive energy use. The geographical distribution and quality of unconventional gas resources were assessed to suggest blending rates with coal, which has a higher carbon content and lower hydrogen content. Integrating these two sources produced syngas for fuel and chemicals synthesis. Removing the water-gas-shift unit used in normal syngas operations allowed improvement of both energy and carbon efficiency and also permitted CO2 to be used as a resource. Such results suggest an integrated coal- and gas-based energy system as a strategic option to be deployed in China＇s transition toward a low carbon era. Expanding the analysis further, we discuss a number of other systems. These include using gas and coal to produce oil（CGTL）, to produce methanol-MTG for gasoline systems（CGTG）, and further integrate algal resources to produce oil（BCGTL）. Technical evaluations and detailed explanations of these processes are provided herein.
出处
《科学通报》
EI
CAS
CSCD
北大核心
2015年第16期1546-1552,共7页
Chinese Science Bulletin
关键词
能源
天然气
煤基能源
低碳
减排
CO2
energy natural gas coal-based energy low-carbon energy emissions reduction carbon dioxide
