百吨级生物质合成气合成二甲醚中试系统设计及运行分析  

DESIGN AND OPERATION ANALYSIS ON 100-TON SCALE DIRECT SYNTHESIS OF DME FROM BIOMASS SYNTHESIS GAS

作　　者：王铁军[1] 吕永兴[1,2] 吴创之[1] 马隆龙[1] 阴秀丽[1] 张兴华[1] 李海滨[1] 蔡飞鹏[3] 孙荣蜂[3] 许敏[3] 王建梅[3] 

机构地区：[1]中国科学院可再生能源与天然气水合物重点实验室中国科学院广州能源研究所,广州510640 [2]中国科学院研究生院,北京100039 [3]山东省科学院能源研究所,济南250014

出　　处：《太阳能学报》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)

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.

关 键 词：百吨级 生物质合成气 二甲醚合成 设计 运行 

分 类 号：TK6[动力工程及工程热物理—生物能]