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The basic study of methanol to gasoline in a pilot-scale fluidized bed reactor
Yi Wang,Fengzhen Yuan 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.3
A fluidized bed reactor, used for methanol to gasoline (MTG), was designed followed the theory of gas–solid two-phase flow, and the effects of some factors, such as temperature, space velocity and theregeneration process, on the performance of MTG catalyst were systematically examined. The resultsshow that: heat and mass transfer can be effectively conducted in the fluidized bed reactor; with thereaction temperature was increased, the methanol conversion rate maintained at 100% and the yield ofgasoline gradually increased, then reached its highest value of 25.22% at 410 ℃, after that it began todecline; and the C5 aromatics content increased with temperature and reached its maximum value of49.86% at 430 ℃. With the weight space velocity was increased, the yield of gasoline firstly increased andthen decreased, while the C5 aromatics content was decreased; In addition, the effect of inner-regenerated process for used catalyst is very good. Low temperature can help to generate lighter olefinpolymer, the higher extent of hydrogen transfer and cracking of large molecules at middle temperature,the carbon deposition reaction and aromatization reaction of low carbon olefin occurred at highertemperature, all of these contributed the above mentioned rules. While the weight space velocity acts onthe performance of catalyst mainly via influencing the contact time and the carbon deposition reaction.