中国电机工程学报Issue(29)：5131-5139,9.DOI:10.13334/j.0258-8013.pcsee.2014.29.015
以煤为燃料的化学链燃烧研究进展
Research and Development of Coal-fueled Chemical Looping Combustion
摘要
Abstract
Coal-fueled chemical looping combustion was studied from three aspects. In the aspect of oxygen carriers, the gas-solid reaction of carriers was studied. Multi-crystal Fe with smooth surface was used as the reactant to eliminate the effect of pore structure. The morphology of solid products was observed under a scanning electron microscope. The problem of directly observing the product morphology was solved. A rate equation theory was developed to describe the macroscopic kinetics based on the nucleation and growth of solid product from molecular level. A model of interaction force between active components and inert supports was developed. The method of improving the reactivity of natural limonite by introducing foreign ions was proposed. In the aspect of interaction between coal and oxygen carriers, the effect of volatiles and ash on oxygen carriers was addressed. The match of char gasification rate and reduction rate can be achieved through catalytic gasification. Fragmentation, attrition, and segregation of coal particles caused the incomplete gas conversion in the fuel reactor. In the reactor aspect, a three fluidized beds reactor with dual circulating loops was built. A steady operation of 140h in hot mode was accomplished. The concepts of downer reactor, low temperature CLC, and direct CLC were proposed for converting the un-reacted gases.关键词
化学链燃烧/煤/气固反应/载氧体/反应器Key words
chemical looping combustion/coal/gas-solid reaction/oxygen carrier/reactor分类
能源科技引用本文复制引用
李振山,鲍金花,孙宏明,徐雷,蔡宁生..以煤为燃料的化学链燃烧研究进展[J].中国电机工程学报,2014,(29):5131-5139,9.基金项目
国家自然科学基金项目(51376105，51061130535)；国家重点基础研究发展(973)计划课题(2011CB707301)；新世纪人才计划(NCET-12-0304)；清华大学自主科研项目。@@@@Project Supported by National Natural Science Foundation of China (51376105,51061130535) （51376105，51061130535）
National Key Basic Research and Development Program(2011CB707301) （2011CB707301）
Program for New CenturyExcellent Talents in University (NCET-12-0304) （NCET-12-0304）
Tsinghua University Initiative Scientific Research Program （）
