CO2气氛下生物质气化制氢的数值分析  

Numerical analysis on hydrogen production based on biomass gasification in CO atmosphere

作　　者：袁文华 张俊霞 杨彦林 叶垚 刘志辉 胡锋超 蒋作佩 周政权 李智杰 YUAN Wenhua;ZHANG Junxia;YANG Yanlin;YE Yao;LIU Zhihui;HU Fengchao;JIANG Zuopei;ZHOU Zhengquan;LI Zhijie(School of Mechanical and Energy Engineering,Shaoyang University,Shaoyang 422000,China;School of Oil Engineering,Changzhou University,Changzhou 213000,China;Shaanxi Baoji(Baoji No.2)Power Generation Limited Company,Baoji 721405,China;Hunan Xiangtan Pulande Biotech Limited Company,Xiangtan 411000,China;Hunan Xiangtan Qirun Teaching Vehicle Technology Limited Company,Xiangtan 411000,China)

机构地区：[1]邵阳学院机械与能源工程学院,湖南邵阳422000 [2]常州大学石油工程学院,江苏常州213000 [3]陕西宝鸡第二发电有限公司,陕西宝鸡721405 [4]湖南省湘潭市普兰德环境生物科技有限公司,湖南湘潭411000 [5]湖南省湘潭市祺润教学设备科技有限公司,湖南湘潭411000

出　　处：《热科学与技术》2020年第5期472-478,共7页Journal of Thermal Science and Technology

基　　金：湖南省重点研发计划资助项目(2018GK2074);湖南省自然科学基金资助项目(2019JJ50561);湖南省教育厅优秀青年资助项目(18B425);国家自然科学地区基金资助项目(51866015)。

摘　　要：生物质气化制氢有重要的工业应用价值,采用ASPEN PLUS软件数值模拟了稻壳在流化床中的气化过程。模拟运用吉布斯自由能最小化原理,选择RGibbs和RYield模块,采用CO2作为气化剂,计算获得了气化温度、CO2质量流量、CO2和稻壳质量比和碳转化率对产氢率的影响规律。结果表明:在CO2质量流量为200 kg/h时,H2的生成率高达43%。随着CO2和稻壳质量比增加,CO和CO2体积分数逐渐升高,CH4体积分数下降,H2体积分数在不同的气化温度下趋于平稳(600~700℃)或下降(800~1 000℃)。随着气化温度升高,碳转化率增加;随着CO2和稻壳质量比的升高,碳转化率下降。Hydrogen production based on biomass gasification has an important industry application. Biomass gasification in the fluidized bed was simulated numerically with ASPEN PLUS software, where the principle of the Gibbs free energy minimization and RGibbs and RYield modules were used. The gasifier agents adopted CO2. The influences of the mass flux of CO2, gasification temperature, the mass ratio of CO2 to rice husk and the carbon conversion rateon the yield of hydrogen were analyzed. The yield rate of hydrogen reached 43% when mass flux of CO2 was 200 kg/h. As the mass ratio of CO2 to rice husk increased, the volume fractions of CO and CO2 rose gradually, the volume fraction of CH4 reduced, and the volume fractions of H2 tended to a stable state when the gasification temperature ranged from 600 to 700 ℃ and reduced when the gasification temperature changed from 800 to 1 000 ℃. As the gasification temperature rose, the carbon conversion rate increased. And as CO2/B rose, the carbon conversion rate reduced.

关 键 词：生物质气化 制氢 ASPEN PLUS CO2 

分 类 号：TK01[动力工程及工程热物理]