生物质二次裂解制取氢气的研究  

STUDY ON HYDROGEN PRODUCTION FROM BIOMASS BY TWICE DECOMPOSITION

作　　者：孟光范[1] 赵保峰[1] 张晓东[1] 陈雷[1] 许海朋[1] 孙立[1] 

机构地区：[1]山东省科学院能源研究所,济南250014

出　　处：《太阳能学报》2009年第6期837-841,共5页Acta Energiae Solaris Sinica

基　　金：国家自然基金资助项目(50676052);国家高技术研究发展计划(863)项目(2006AA05Z117)

摘　　要：采用生物质热解及二次裂解的方法制取富氢气体。通过对生物质热解产生的气液体成份进行二次裂解,实现热解组分中焦油等含氢化合物的深度转化,提高产品气体中氢气的含量,同时解决了热解产品气中焦油不易去除的难题,得到洁净的富氢气体。实验选用稻壳为原料,分析了热解温度和物料滞留时间等因素对热解气体成份的影响,比较了热解气体和二次裂解气体成份的变化,同时分析了水蒸汽、催化剂等因素对裂解气体成份的影响。实验结果表明,热解温度和物料滞留时间的增加提高了热解气体中氢气的含量,二次裂解、水蒸汽和催化剂的引入都能在一定程度上提高产品气中H_2的含量。实验最终表明,氢气体积含量可达到60%以上。To get clean hydrogen-rich gas from biomass, an innovational twice decomposition was introduced, which realized the deep conversion process of hydrogen production by pyrolysis and of hydrocarbons to decrease tar sharply and im- prove hydrogen yield. With the rice husk as the feedstock, the effects of pyrolysis temperature and the residence time on the changes of pyrolysis gas were studied. Variation of gas components between pyrolysis gas and twice decomposition was compared. Meanwhile, the effects of super steam and catalysts on the changes of twice decomposition components were researched. The results indicate that the hydrogen content in the gas composition increases greatly by twice decomposi- tion, steam reforming and catalysts, and the content of hydrogen can reach 60 % （vol）, while the content of biomass tar, carbon monoxide and methane decreased.

关 键 词：生物质 氢气 热解 二次裂解 

分 类 号：TK6[动力工程及工程热物理—生物能]