撞击流反应器用于甲醇合成反应

撞击流反应器用于气液固三相甲醇合成反应可以充分发挥其优良的传热、传质性能。在撞击流反应器内，催化剂浆料经喷嘴雾化后成微米尺度的液滴，气液相间接触面积远大于其他三相合成反应器。考察了温度、压力、气体流量、浆料循环量以及喷嘴个数对甲醇合成反应的影响，结果表明，当压力从3.8 MPa上升到5 MPa时，反应器的时空产率增长了近1倍，气体流量达22.4 L·min^-1后时空产率几乎不再变化，增加浆料循环量以及在同一循环量下采用多喷嘴对置都可以增加催化剂时空产率。同时，与固定床、搅拌釜和浆态鼓泡床甲醇合成进行了对比，结果表明，在低空速下撞击流反应器与其他反应器时空产率相当，而在高空速下要优于其他反应器。

Methanol synthesis in an impinging stream reactor

When it was used for gas-liquid-solid three-phase methanol synthesis, an impinging stream reactor showed good heat and mass transfer performance.In the impinging stream reactor, the catalyst slurry was atomized into droplets of several micrometers in size which provided a huge interface between gas and slurry phase.The effects of temperature, pressure, gas flow rate, slurry recirculation flow rate and number of nozzles on methanol productivity were investigated.The results showed that a pressure increase from 3.8 MPa to 5 MPa doubled methanol productivity,and at a gas flow rate up to 22.4 L·min^-1, methanol productivity kept constant.The increases in slurry recirculation flow rate and in the number of multi-nozzle also resulted in the increase of methanol productivity.When space velocity was low, the impinging stream reactor had the same methanol productivity as compared with other reactors such as fixed bed reactor, agitated reactor and slurry bubble column.However, at a high space velocity the impinging stream reactor had higher methanol productivity than those of other reactors.