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- W2381202751 abstract "The flow fluidized bed reactor was applied to methanol-to-olefins research after some necessary improvements of traditional fixed flow bed reactor.Methanol decomposition probability before contacting the catalysts could be decreased to the lowest level by adjusting the pre-heater temperature and changing the material of descending feed pipe.The results of device repeatability and material balance investigation showed this reactor had good data repeatability and could achieve 97%of mass balance.The experiments about the effect of reaction temperature and water / methanol mass ratio on main products distribution were carried out based on the SAPO-34molecular sieve catalysts.The results of temperature experiments showed the temperature increase improved the ethylene selectivity greatly.As well as speed up the coke formation,the methanol conversion was almost 100%,and the C = 2 ～C = 4 selectivity could be over 90%.For eth-ylene as main product,the reaction temperature was suggested to choose 500 ℃ with C = 2 / C = 3 molar ratio of 1.5.For propylene as main product,the reaction temperature of 450～470 ℃ should be chosen with C = 2 / C = 3 molar ratio of 0.9～1.1.The results of water / methanol mass ratio experiment showed that increasing the water content could not only delay the coke formation rate,but also increase the ethylene selectivity remarkably,which could put the C = 2 / C = 3 molar ratio up to more than 2.0.Too much water would increase the energy consume and the load of reactor and products separator unavoidably no matter for ethylene or propylene as main products.Therefore,water / methanol mass ratio of 0.25～0.5was advocated." @default.
- W2381202751 created "2016-06-24" @default.
- W2381202751 creator A5061620908 @default.
- W2381202751 date "2013-01-01" @default.
- W2381202751 modified "2023-09-24" @default.
- W2381202751 title "Performance analysis of methanol to olefins process in fluidized bed reactor" @default.
- W2381202751 hasPublicationYear "2013" @default.
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