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中文摘要：
介绍了国内外煤化学链燃烧技术的研究和发展状况,分析了其技术特点、限制环节、改进措施和发展方向.相对于以煤气化产物为燃料的煤间接化学链燃烧技术,直接以煤为燃料的化学链燃烧技术系统简单、运行成本低,具有显著的经济优势,但是过低的煤气化速率是其中的限制环节.为了提高煤的气化速率、促进煤的充分转化,需要从氧载体和煤质的选择及活化、运行参数的优化和燃料反应器结构的改进等方面进行全面考虑.高性能氧载体是煤化学链燃烧技术的基础,深入研究煤中硫组分和灰分的演化及其对氧载体活性的影响非常必要.另外,氧解耦煤化学链燃烧技术以及基于煤化学链制氢技术也需要重视.
英文摘要：
Current research and development status of chemical looping combustion（CLC） of coal in China and abroad were introduced,and the features and limitaiton of this novel technology were analyzed,while the improvement measures put forward and development tendency further discussed.With regard to CLC of coal,the direct route is economically superior to the indirect one for its simpler system and lower operation cost.But the low gasification rate is the real limiation step for the direct route of CLC by coal.In order to improve coal gasification rate and to promote the complete conversion of coal,such four aspects as the selection of both oxgyen carriers and coal rank,optimized operation parameters along with the rational structure of fuel reactor should be comprehensively considered.Furthermore,oxygen carriers of high quality are the basis for the application of CLC,and deep research on the evolution of sulfur and ash content in coal and their effect on the reactivity of oxygen carriers should be further conducted.In addition,attention should also be paid to another two novel CLC-based technologies,chemical looping with oxygen uncoupling and hydrogen production.
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