摘要
在高压微型反应装置上进行了生物质气合成甲醇的研究。利用组成为H2 /CO/CO2 /N2 (体积比 ) =52. 5 /21. 5 /22. 8 /3. 2的富CO2原料气考察了不同温度、压力和空速条件时甲醇的时空产率和质量分数。结果表明,在所考察的范围内,甲醇的产率和质量分数在 260℃达到最大。产率和质量分数随反应压力升高而增大,空速增加使产率增大,甲醇的质量分数降低。当p=4MPa,t=260℃,WHSV=5 280h-1时, 甲醇的时空产率为 0. 79g·(mL·h)-1,质量分数为 96. 2%,与工业合成气相比,分别下降 25. 8%和 1. 64%。
The synthesis of methanol from CO2-rich syngas derived from biomass was carried out in a high pressure micro-reactor system. The effect of temperature, pressure and space velocity on space time yield (STY) and concentration of methanol was studied using a feed gas with H2 (52.5%), CO (21.5%), CO2 (22.8%) and N2 (3.2%). The results show that both STY and concentration of methanol increase with temperature and reaches maximum at 260°C, and then decreases. Higher pressure results in higher STY and concentration of methanol. STY increases and methanol concentration decreases under higher space velocity. The STY is 0.79 g · mL-1h- and methanol concentration is 96.2% under the conditions of 4 MPa, 260°C and 5280 h-1. Compared with the results of methanol synthesis using CO-rich industrial syngas, the STY and concentration of methanol decreases by 25.8% and 1.64% respectively. In order to improve efficiency of the whole system, off-gas can be used to produce electricity.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2005年第1期58-61,共4页
Journal of Fuel Chemistry and Technology
基金
国家高技术研究发展计划(863项目
2001AA514020)
广东省科技计划项目(2003B30803)。~~
关键词
生物质
合成气
合成甲醇
biomass
syngas
methanol synthesis
