CONVERSION OF HEAVY AROMATICS TO LIGHTAROMATICS(HAL)- PROVIDING CHEAP RAW MATERIALSFOR PETROLEUM PROCESSING

摘要

A new technology has been developed, which can be used for producing more B.T.X. fromC4 and higher alkyl-aromatics containing mainly in cracking gasoline and catalytic reforming as well asby-products of disproportionating and isomerizing processes. A catalyst consisting of noble metal andzeolite ZSM-5 has been prepared, which achieves higher activity and stability as well as lowerhydrogen consumption. It has been founded that the reaction temperature, reaction pressure, WHSVand H/HC can influence the reaction results, and the proper reaction conditions have been determined.The pilot plant test has been completed successfully with 36～50m% of B.T.X. based on one-pass yield.According to the results of the pilot plant test, reaction thermal effect has been measured and theelementary technology flow has been designed. It is expected to be commercialized in China in 2000.