Modeling Of The Fischer-Tropsch Synthesis In Slurry Bubble Column Reactor

The important processes in the indirect coal liquefaction technique Fischer-Tropsch synthesis, have extensively been studied throughout the world. In this paper, the mathematical model of bubble column slurry reactor has been formulated using computer simulation. The objective is to rationally design, scale-up, control and optimize the synthesis processes in bubble column slurry reactor, thus make it possible to forecast the reactor performance and provide reference information to industrialization. Back mixing of the gas-solid-liquid phase in the slurry reactor and other parameters and the uneven distribution of heat in the slurry phase was considered. With coupled Fischer-Tropsch synthesis reaction kinetics, the fluid flow, chemical reaction and mass transfer, a description of slurry Fischer-Tropsch synthesis process of concentration and temperature distribution in the reactor model was established.Amplification and influencing factors of Fischer-Tropsch synthesis in slurry bubble column reactor was analyzed in this paper, and the model was applied to predict the scale-up of the result of annual output of tens thousand of tons hydrocarbon products reactor. Furthermore, this mathematical model was used to simulate the effect of different apparent gas velocity feed H2/CO ratio, catalyst concentration and mass-transfer resistance on reactor performance, reaction conversion and space time yield. Information can be provided for rational design and optimization of industrial testing reactor and industrialization of reaction processes.