Circulating entrained bed reactor has many good characteristics as follows: good mass transfer, good solid suspending, little axial backmixing, sufficient contact of different phase, wide adjustable range of gas-liqui...Circulating entrained bed reactor has many good characteristics as follows: good mass transfer, good solid suspending, little axial backmixing, sufficient contact of different phase, wide adjustable range of gas-liquid ratio and high efficiency of catalyst. Study on methanol synthesis has been carried out in the hot model experimental apparatus, and the effects of these factors such as slurry recirculation flow rate,space velocity,concentration of catalyst, the number of nozzle on the methanol synthesis has been investigated in the present study. The results show that the outlet product concentration and space-time yield increase with slurry recirculation flow rate, concentration of catalyst and the number of nozzle. High space velocity of syngas enhanced the space-time yield of catalyst,but decreased the outlet product concentration.展开更多
文摘以粗颗粒Al2O3粉为原料,采用气流循环粉碎法制备了d50<1μm的Al2O3超细粉.按正交表L9(34)安排正交试验,通过方差分析确定了制备Al2O3超细粉的最佳气流循环粉碎条件,并分析了各因素对气流循环粉碎过程的影响程度.不同物料的最佳气流循环粉碎条件应通过实验确定.在本研究的实验条件下,制备Al2O3超细粉的最佳条件为:进气压力1.0 MPa,给料压力0.4 MPa,循环时间1.5 h.
文摘Circulating entrained bed reactor has many good characteristics as follows: good mass transfer, good solid suspending, little axial backmixing, sufficient contact of different phase, wide adjustable range of gas-liquid ratio and high efficiency of catalyst. Study on methanol synthesis has been carried out in the hot model experimental apparatus, and the effects of these factors such as slurry recirculation flow rate,space velocity,concentration of catalyst, the number of nozzle on the methanol synthesis has been investigated in the present study. The results show that the outlet product concentration and space-time yield increase with slurry recirculation flow rate, concentration of catalyst and the number of nozzle. High space velocity of syngas enhanced the space-time yield of catalyst,but decreased the outlet product concentration.