熔融碱裂解甘油制氢研究  

HYDROGEN PRODUCTION BY PYROLYSIS OF GLYCEROL IN MOLTEN ALKALI

作　　者：唐强[1] 于凤文[1] 吕红云[1] 高龙超[1] 计建炳[1] 

机构地区：[1]浙江工业大学化学工程与材料学院,浙江省生物燃料利用技术研究重点实验室,杭州310032

出　　处：《太阳能学报》2014年第4期721-725,共5页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(20876150);浙江省生物质能清洁利用创新团队自主设计项目(2009R50012)

摘　　要：以熔融NaOH作为加热和反应介质进行甘油裂解制氢试验研究。讨论熔融碱对裂解产物分布的影响,考察不同进料方式、裂解温度、载气流速和进料速率等因素对甘油产氢气产率的影响。结果表明:熔融碱使产品气中只含有H2和CH4,其中H2的体积分数达到90%以上;进料时保证甘油与熔融碱充分接触,可大幅减少结焦、脱水等副反应的发生;与载气流速和进料速率相比,裂解温度是影响甘油制氢的主要因素,在裂解温度425℃,载气流速100L/h,进料速率4.5g/min的最优条件下,甘油氢气产率为4.82mol H2/(mol甘油),达到理论产率的68.9%。Experiment study on the as the heating and reaction medium, pyrolysis of glycerol for hydrogen production was carried out in a self-designed reactor. distribution of pyrolysis production was discussed. in molten alkali, which was used The impact of molten alkali on the Meanwhile, operation parameters, such as pyrolysis temperature, cartier gas flow rate and feeding rate, as well as feeding method were investigated for their influences on the hydrogen production yield. The results showed that CO and CO2 were absorbed by molten alkali in pyrolysis, so that there were more than 90% volume fraction of H2 and a small amount of CH4 in product gas. Feeding method which could ensure glycerol to fully contact with the molten alkali, could significantly reduce the coke and dehydration reactions, and enhance the hydrogen production. In comparison to carrier gas flow rate and feeding rate, the change of pyrolysis temperature had significant effects on hydrogen production yield, and the hydrogen production yield could reach 4. 82mol H2/mol glycerol, which is 68.9% of the theoretical yield, when the pyrolysis temperature was 425℃, the carrier gas flow rate was 100L/h, and the feeding rate was 4. 5g/min.

关 键 词：甘油 裂解 氢气 熔融碱 

分 类 号：TK91[动力工程及工程热物理]