文献类型：期刊文献

中文题名：木屑炭水蒸气气化制备合成气

英文题名：Steam Gasification of Sawdust-char for Syngas

作者：贾爽[1,2,3,4] 应浩[1,2,3,4] 孙云娟[1,2,3,4] 孙宁[1,2,3,4] 徐卫[1,2,3,4] 许玉[1,2,3,4] 宁思云[1,2,3,4]

第一作者：贾爽

机构：[1]中国林业科学研究院林产化学工业研究所;[2]生物质化学利用国家工程实验室;[3]国家林业局林产化学工程重点开放性实验室;[4]江苏省生物质能源与材料重点实验室

年份：2017

卷号：51

期号：5

起止页码：23-28

中文期刊名：生物质化学工程

外文期刊名：Biomass Chemical Engineering

收录：北大核心:【北大核心2014】；

基金：林业科学技术推广项目([2015]31);"十二五"国家科技支撑计划资助(2015BAD15B06);江苏省生物质能源与材料重点实验室项目(JSBEM-201606)

语种：中文

中文关键词：木屑炭;气化;合成气;炭转化率;H2/CO

外文关键词：sawdust-char; gasification ; syngas ; carbon conversion rate; H2/CO

分类号：TQ35;TK6

摘要：以木屑炭为原料,在上吸式固定床气化炉中进行水蒸气气化制备合成气,考察了温度和水蒸气流量对木屑炭水蒸气气化的产物分布、炭转化率、产气率、组成含量和H_2/CO值的影响。结果表明:升高温度有助于木屑炭气化,炭转化率和产气率分别在950℃下达到最大值99.2%和4.16 L/g,但温度升高会导致H_2从65.8%降至61.2%,同时H_2/CO也呈下降趋势,从10.3降至3.35;水蒸气流量的增加可提升H_2,从59.8%升至62%,但流量升至0.6 g/min时气化结果趋于稳定。水蒸气气化的最佳操作条件为900℃,水蒸气流量0.6 g/min,此条件下炭转化率、产气率和热值分别达到93.3%、4.06 L/g和9.04 MJ/m3,H_2/CO值为4.11,适合于合成甲烷。
Steam gasification of sawdust-char was studied in updraft fixed bed reactor to prepare syngas. The effects of temperature and steam flow rate on products distribution, char conversion rate, gas yield, gas composition and the ratio of H2/CO were investigated. The results showed that temperature had a positive effect on sawdust-char steam gasification, the maximum char conversion rate and gas yield of 99.2 % and 4.16 L/g were obtained at 950 ℃. However, the increase of temperature would cause the decrease of H2 concentration from 65.8 % to 61.2 %. In the meantime, the ratio of H2/CO decreased from 10.3 to 3.35. Increasing steam flow rate could improve H2 concentration from 59.8 % to 62 %, but there was no change in gasification consequences with the steam flow rate higher than 0.6 g/min. In addition, the temperature of 900 ℃ and the steam flow rate of 0.6 g/min were the optimum operating conditions, and the char conversion rate of 93.3 % and gas yield of 4.06 L/g could be obtained. Furthermore, the ratio of H2/CO could arrive to 4.11, meeting the requirement of methanation.