RFS09硫转移剂吸附量研究

RESEARCH ON ADSORPTION CAPACITY OF RFS09 SO_x TRANSFER AGENT

以配制的FCC装置再生烟气为原料,在实验室小型流化床试验装置上对RFS09硫转移剂的SO2脱除率、累计吸附量及间歇吸附量随运行时间的变化进行研究。结果表明:硫转移剂的SO2脱除率随运行时间的延长会在特定时间点发生阶跃性降低;硫转移剂的SO2累计吸附量随运行时间的延长呈现出逐步增加的趋势,反应初期累计吸附量增加较快,其后增长幅度逐步减小;单位质量硫转移剂在单位时间下的SO2吸附量呈现出逐步降低的趋势,并且在特定时间点呈现出阶跃性降低;硫转移剂的SO2累计吸附量随装填量的增加而增加,但并不是简单的等量放大,表明硫转移剂在实际工业应用中存在最优的使用量,即单位质量硫转移剂最大的SO2累计吸附量。

The investigation of the adsorption capacity of RFS09 SOx transfer for simulated FCC re- generation flue gas was conducted in a small-scale fluid bed unit. The experimental results indicate that SO2 removal rate of SOx transfer steps down at some time point with the extension of running time. The accumulated adsorption capacity indicates a gradually increasing trend with running time. It increases quickly at the beginning of reaction and then goes up slowly. The absorption capacity per mass of SOx transfer in unit time decreases gradually and steps down at some time point. The accumulated absorption capacity of the SO~ transfer increases with increase of loading, but it is not a simple amount of amplifica- tion. The research results indicate that there is an economic usage amount of SOx transfer in commercial unit for the largest SO2 accumulation absorption capacity per weight of SOx transfer.