生物质低温气化及催化重整制氢  

Hydrogen Production by Biomass Gasification at Low Temperature and Catalytic Reforming of the Volatile

作　　者：张尤华[1] 辛善志[1] 张素平[1] 许庆利[1] 颜涌捷[1] 

机构地区：[1]华东理工大学生物质能研究中心,上海200237

出　　处：《石油化工》2010年第11期1198-1203,共6页Petrochemical Technology

基　　金：国家重点基础研究发展规划项目(2007CB210206)

摘　　要：对生物质低温气化及催化重整制氢进行了研究。在流化床反应器中考察了较低的气化温度下气相停留时间(12～22s)对气、液、固三相及氢气产率的影响;同时在固定床反应器中对流化床反应器中较长停留时间下的气态产物进行了催化重整,考察了温度和催化剂粒径对氢气产率的影响。实验结果表明,在气化温度600℃下,气体、固体和氢气产率随气相停留时间的延长而增大,液体产率则相反;经过流化床反应器内较长停留时间的焦油只有在催化重整温度高于800℃时才有大幅的裂解;催化剂宜在接近原始尺寸的条件下使用;在气化温度600℃、气相停留时间16s、催化重整温度900℃、GHSV=1716h^(-1)、催化剂粒径大于5mm时,可获得1447.32 mL/g的氢气产率、47.50 mL/g的CO产率和7.20 mL/g的甲烷产率。The hydrogen production through the biomass （wood-scrap） gasification at low temperature and then the catalytic reforming of the volatile were studied. The effects of the gas residence time on the yields of the gas, liquid, solid and hydrogen products were investigated in the gasification in a fluidized bed at low temperature. The catalytic reforming of the volatile products obtained through the gasification was carried out in a fixed bed, and the effects of the catalytic reforming temperature and the catalyst particle size on the hydrogen yield were evaluated. The results showed that： （1） as the gas residence time increased from 12 s to 22 s, the yields of gas, solid and hydrogen products increased but the liquid product yield decreased; （2） the catalytic reforming temperature had to be higher than 800 ℃ to achieve a high tar conversion; （3） the catalyst with the original size was appropriate for the application ; （4） the yields of hydrogen, CO and CH4 could reach 1 447. 32 mL/g, 47. 50 mL/g and 7. 20 mL/g respectively under the optimal conditions of the gasification temperature 600 ℃, the gas residence time 16 s, the catalytic reforming temperature 900 ℃, the GHSV 1 716 h^-1 and the catalyst particle size above 5 mm.

关 键 词：生物质 低温气化 催化重整 制氢 

分 类 号：TQ517.2[化学工程]