摘要
提出一种新型的生物质水蒸气气化制氢方法.该方法在生物质水蒸气气化过程中添加CO2吸收剂,旨在通过吸收CO2促进产氢反应向着氢气产生方向进行,从而提高产氢量.分析了Ca(OH)2、水蒸气、温度和保持时间对产氢量以及产气组分百分比的影响,结果表明:在生物质水蒸气气化过程中添加CO2吸收剂能显著提高产氢量;随着Ca(OH)2的增加产氢量先升高后略微降低,Ca(OH)2对水煤气反应的影响要明显强于对甲烷水蒸气重整反应的影响;产氢量随水蒸气的增加先升高后降低;产氢量随温度的升高迅速增加;充足的保持时间可以使制氢反应进行彻底.
A novel hydrogen production in which Ca（OH）2 is adopted as a CO2 sorbent to increase H2 yield in the process of hydrogen production from woody biomass by steam gasification was proposed. The influences of the amount of Ca（OH）2 and steam, reaction temperature, and holding time on He yield and gas composition were investigated. The experimental results show that H~ yield increases significantly under the catalysis of Ca（OH）2. With the increasing of the amount of Ca（OH）2, He yield increases firstly, and then decreases slightly. Furthermore, Ca（OH）2 has a stronger effect on water gas shift reaction than on steam reforming of methane. Higher temperature contributes to more hydrogen production. The introduction of steam greatly increases H2 yield. However, excessive steam would lower gasification temperature and H2 yield. In addition, enough holding time is necessary for hydrogen production.
出处
《上海交通大学学报》
EI
CAS
CSCD
北大核心
2007年第12期1930-1933,共4页
Journal of Shanghai Jiaotong University
基金
国家级星火计划项目(2006EA105033)
关键词
生物质
CO2吸收剂
水蒸气气化
制氢
biomass
CO2 sorbent
steam gasification
hydrogen production
