摘要
该系统以农业废弃物玉米芯经富氧气化制备的低H_2/CO合成气为气源,采用固定床一步法合成二甲醚工艺,高效生产DME产品。运行结果表明,在空速为650h^(-1)和1200h^(-1)时,CO单程转化率分别为82.00%和73.55%,DME选择性分别为73.95%和69.73%,DME时空产率分别为124.28kg/(m^3·h)和203.80kg/(m^3·h)。生物质合成气的深度脱氧和脱焦油是保证合成系统稳定运行的关键。合成尾气H_2/CO较高,经脱CO_2后循环利用可大大提高DME的产率。
The characteristics of design and operation of a dimethyl-ether （DME） Pilot plant （100ton/y） was introduced. In the Pilot plant, the low ratio of H2/CO synthesis gas was produced by oxygen-rich gasification of corn core. The DME was produced effectively from biomass synthesis gas on the fix-bed one-step DME synthesis process, and then purified successfully by rectifying. The results showed that CO conversion reached 82.00% and 73.55%, and the selectivity of DME are 73.95% and 69.73%. The space time yields are 124.28kg/（m3 ·h） and 203.80kg/（m3·h） when GHSV are 650h^- 1 and 1200h^- 1, respectively. Deoxidation and tar removals of biomass syngas are critical to the stable operation of DME synthesis system. The H2/CO ratio of purge gas after once-through synthesis is high. It could be reused after removal of CO2, and the yield of DME would be increased gready.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2009年第11期1566-1570,共5页
Acta Energiae Solaris Sinica
基金
中国科学院创新方向性项目(KGCXZ-YW-306-2)
国家重点基础研究发展(973)计划课题(2007CB210207)
关键词
百吨级
生物质合成气
二甲醚合成
设计
运行
100-ton/y scale
biomass synthesis gas
DME synthesis
design
operation
作者简介
通讯作者：王铁军（1972-），男，博士、研究员，主要从事生物质能利用方面的研究。wangtj@ms．giec．ac．cn
