化工学报2019，Vol.70Issue(8)：3040-3049,10.DOI:10.11949/0438-1157.20190312
热解-重整-燃烧解耦的煤气化特性
Gasification characteristics of coal in decoupled triple bed
摘要
Abstract
Catalytic steam gasification of coal was carried out in a pyrolysis, reforming and combustion separated decoupled triple bed gasification system. The olivine was used as the in-situ tar cracking catalytic bed material, and the coal catalytic gasification experiment was carried out. The effects of coal types, coal feeding rate, reformer temperature and steam to carbon mass ratio (S/C) on gasification performance were investigated. The results showed that the gas yield, carbon conversion, cold gas efficiency and H2 content in the gas increased with the increasing volatile content of coal. The carbon conversion and cold gas efficiency is relatively low due to the char is not involved in gasification reaction. The gas yield and gas composition influenced by coal to catalyst ratio. The gas yield increased from 0.28 m3/kg to 0.46 m3/kg and the H2 content increased from 28.4% to 50.5% with increasing coal feeding rate from 0.12 kg/h to 0.30 kg/h. Increasing reforming temperature and S/C were beneficial to promote the tar cracking and conversion, and thus increased the gas yield. A gas yield of 0.6 m3/kg tar content as low as 2.11 g/m3 has been achieved at the reformer temperature was 850℃and S/C of 1.0. The addition of steam enhanced the steam reforming reaction of tar, and increased the gas yield. However the excessive steamcause shorter residence time of tar in reformer that results reduction degree of tar steam reforming reaction.关键词
煤气化/解耦三床/固体热载体/橄榄石Key words
coal gasification/ decoupled triple bed/ solid heat carrier/ olivine分类
化学化工引用本文复制引用
亚力昆江·吐尔逊,艾热提·阿不都艾尼,潘岳,阿布力克木·阿布力孜,迪丽努尔·塔力甫,马凤云,徐绍平..热解-重整-燃烧解耦的煤气化特性[J].化工学报,2019,70(8):3040-3049,10.基金项目
国家自然科学基金项目(21766037,50776013) （21766037,50776013）
新疆维吾尔自治区自然科学基金项目(2017D01C077) （2017D01C077）
