Study On Feed Distributor Of Slurry Bed Reactor

In this paper,the cold mold experiment and numerical simulation are used to study the distribution ability of the prototype feed distributor of the slurry bed reactor,and the structure is optimized,which is mainly divided into cold model experiment,numerical simulation and verification,and Optimize the forecast three parts.Cold model experiments and numerical simulations were carried out on the prototype feed distributor,and the results were compared to show that the selected mathematical model has credibility.According to the problems of the prototype feed distributor,the improvement ideas and optimization directions are proposed.The simulation of the improved feed distributor structure is carried out.The simulation results are compared with the prototype simulation results to verify the optimization results.The feed distributor performance is characterized by the feed distributor pressure drop ?P,gas non-uniformity M and gas holdup,combined with the feed distributor nozzle influence range,gas velocity streamline diagram and gas velocity vector diagram..The results of cold model experiments show that the overall gas holdup increases with the increase of intake air volume.The prototype feed distributor disperses the gas into bubbles of 3mm?35mm,and the influence range is about 500 mm.The pressure drop of the improved feed distributor increased by 13.33%?17.39%,and the energy consumption increased.At the sacrificial pressure drop,the gas obtained a good distribution effect in the slurry bed reactor and increased the gas and liquid.Contact area increases reaction efficiency.According to engineering experience,it is known that an increase in pressure drop of less than 20% is acceptable,that is,an improvement with respect to the feed distributor is effective.