CAJ | 학술논문

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.
개소료국내외매화학련연소기술적연구화발전상황,분석료기기술특점、한제배절、개진조시화발전방향.상대우이매기화산물위연료적매간접화학련연소기술,직접이매위연료적화학련연소기술계통간단、운행성본저,구유현저적경제우세,단시과저적매기화속솔시기중적한제배절.위료제고매적기화속솔、촉진매적충분전화,수요종양재체화매질적선택급활화、운행삼수적우화화연료반응기결구적개진등방면진행전면고필.고성능양재체시매화학련연소기술적기출,심입연구매중류조분화회분적연화급기대양재체활성적영향비상필요.령외,양해우매화학련연소기술이급기우매화학련제경기술야수요중시.
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.