Study on the difference of performance of SAPO-34 molecular sieve in fixed bed and fluidized bed
China's energy structure is characterized by abundant coal resources,limited oil reserves,and scarce natural gas.Consequently,diversifying the raw material structure has become imperative for the development of China's petrochemical industry.In recent years,significant strides have been made in coal-to-chemical technologies in China,with methanol to olefin technology using SAPO-34 molecular sieve catalyst being a key advancement.The porous structure and surface acidity of this catalyst contribute to its exceptional catalytic performance in MTO reactions.A SAPO-34 molecular sieve catalyst was prepared through high temperature crystallization followed by distillation,filtration,washing,drying and calcination by using pseudo-boehmite alumina sol gel as well as kaolin and aluminum sol as raw materials.The variance in catalytic performance between fixed fluidized bed and circulating fluidized bed configurations for the SAPO-34 catalyst was investigated.The results were demonstrated that the molecular sieve catalyst prepared exhibits technical characteristics such as prolonged lifespan,high yield and elevated E/P ratio compared to current industrial catalysts.It indicated that the correlation performance of the tested catalyst aligns closely with that of reference catalysts used in both fixed fluidized bed or circulating fluidized bed systems;thus suggesting potential replacement."
万方数据
维普
