林产化学与工业2017，Vol.37Issue(3)：107-114,8.DOI:10.3969/j.issn.0253-2417.2017.03.015
木屑半焦高温水蒸气气化制备富氢燃气研究
High-temperature Steam Gasification of Sawdust Char for Production of Hydrogen-rich Gas
摘要
Abstract
Steam gasification of sawdust char for the production of hydrogen-rich gas was studied in a high-temperature fixed bed reactor.Experiments were carried out at 700-900 ℃ with steam flow rate of 0.11-0.32 g/(rmin·g) (based on the char,the same below).The effects of temperature and steam flow rate on the volume fraction of H2,gas yield,heat value and compositions were studied.The results showed that the excess steam led to a decrement of the gas heat value.Under the reaction conditions of temperature 900 ℃ and the steam flow rate was 0.32 g/(min·g),the volume fraction of H2 reached the maximum(62.53％),the heating value of the fuel gas was 8.99 MJ/Nm3 and the gas yield was 2.75 L/g.And the homogeneous volumetric model and shrinking core model were employed to obtain the corresponding kinetic parameters.The shrinking core model fitted the experimental data better than the homogeneous volumetric model.The acitivity energy and the pre-expenential factor obtained with homogeneous volumetric model were 88.67 kJ/(mol·K) and 2 976.55 min-1.The activity energy of the shrinking core model was 91.78 kJ/(mol·K) and the corresponding pre-exponential factor was 2 872.82 min-1.关键词
木屑半焦/水蒸气气化/氢气/产气率/热值/动力学Key words
sawdust char/steam gasification/H2/gas yield/heat value/kinetics分类
化学化工引用本文复制引用
徐卫,孙宁,应浩,孙云娟,许玉,贾爽..木屑半焦高温水蒸气气化制备富氢燃气研究[J].林产化学与工业,2017,37(3):107-114,8.基金项目
国家科技支撑计划课题(2015BAD21B05) （2015BAD21B05）
中国林科院中央级公益性科研院所基本科研业务费专项资金(CAFINT2014K04) （CAFINT2014K04）
林业科学技术推广项目([2016]15号) （[2016]15号）
