CO_2吸附剂对生物质催化热解制取富氢燃气的影响  

Influence of CO_2 Sorbent on Biomass Catalytic Pyrolysis for Hydrogen Rich Gas Production

作　　者：王昶[1] 王刚[1] 张相龙[1] 宋扬[1] 郝庆兰[2] 

机构地区：[1]天津科技大学海洋科学与工程学院,天津300457 [2]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《天津科技大学学报》2012年第2期18-22,共5页Journal of Tianjin University of Science & Technology

基　　金：国家自然科学基金资助项目(21176191)

摘　　要：使用常压双颗粒流化床反应器,对稻壳生物质进行了添加CO2吸附剂的催化热解研究.结果表明:CO2吸附剂CaO和Ca(OH)2可明显促进生物质催化热解初期热解产物的二次反应,使产物向产氢方向移动.添加CaO时,产氢量随CaO添加量的增加而增加;而随Ca(OH)2添加量的增加,富氢燃气产物中氢气的体积分数和产氢量均有峰值出现.同时,Ca(OH)2在催化热解过程产生的H2O可作为生物质二次反应和水煤气变换反应(WGS)的反应物,从而进一步提高热解产物中氢气的产量.The catalytic pyrolysis reactions of rice husk were carried out in a dualparticle powder fluidized-bed （PPFB） reactor to investigate the effect of CO2 sorbent on the yields of hydrogenrich gases and the distributions of pyrolysis products. The results showed that CO2 sorbent obviously promotes the secondary phase reactions of the biomass primary decomposition products. The products shift towards the production of hydrogen. The amount of hydrogen increases with the increase of CaO. The maximum a of the volume fraction of hydrogen and hydrogen yield were observed while adding Ca （OH）2. In addition, the H20 produced through Ca （OH）2 decomposition during the catalytic pyrolysis process can be a reactant in biomass secondary reaction and WGS reaction, and the hydrogen yield in pyrolysis is further increased by Ca （OH） 2 sorbent.

关 键 词：生物质 催化热解 富氢燃气 CO2吸附剂 

分 类 号：TQ351.2[化学工程]