作　　者： ; ; ; ; ; ; ; ; ; ; ;

机构地区： 中国科学院广州能源研究所

出　　处： 《太阳能学报》 2009年第11期1566-1570,共5页

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

领　　域： [动力工程及工程热物理]