流化床中甲醇合成过程

Production of methanol in fluidized bed reactor

在热态流化床中考察了合成气制备甲醇过程,研究了流化床与固定床中相似的空速、温度、压力及CO2添加等条件对CO转化的影响规律。并且针对单段流化床中CO2生成量增加,导致甲醇选择性下降的特征,提出新的双层流化床技术来抑制气体返混,有效地提高了CO的转化率与甲醇的收率。揭示了流化床中的气体返混是影响甲醇收率或选择性的重要因素。研究结果为优化流化床合成气制备甲醇过程提供了基础。

Methanol production from syngas(CO,H2) has been studied in the experimental scale heat-mode fluidized bed reactor.The effect factors on conversion of CO in fluidized bed and in packed bed is analyzed under the similar conditions,which includes temperature,pressure,the addition of CO2,space velocity of CO.Relatively low selectivity of methanol production and relatively high yield of CO2are observed in single stage fluidized bed.However,as using a two-stage fluidized bed reactor,as inhibiting the gas back-mixing between different stages can be effectively inhibited and consequently to increase the selectivity of methanol production and the conversion of CO.The results indicate the gas back-mixing had significantly negative effect on the yield of methanol in fluidized bed reactor.It s useful for the optimal fluidized bed reactor technology to produce methanol.