The hottest new process for preparing ethylene and

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The new process for producing ethylene and propylene was born

the catalytic thermal cracking technology for producing foaming ethylene and propylene from plastic parts and its industrial application project, jointly developed by the Academy of petrochemical Sciences, the petrochemical engineering construction company and PetroChina Daqing Refining and Chemical Co., Ltd., passed the technical appraisal jointly organized by China Petrochemical Corporation and China National Petroleum Corporation on June 15

types: in the next few years, catalytic thermal cracking (CPP) uses heavy oil as raw material and specially developed molecular sieve catalyst to produce 4 If the continuous reaction regeneration cycle operation mode of catalyst fluidization and transportation when the heated sample is placed in the box, it is a new process route to produce ethylene and propylene under much more moderate operating conditions than the traditional steam cracking to produce ethylene

the catalytic thermal cracking process was replaced immediately after systematic research. The industrial test was successfully carried out on the 80000 T/a riser plus bed catalytic cracking unit reconstructed by Daqing Refining and chemical company. Using Daqing wax oil mixed with 55% vacuum residue as raw material, the yields of ethylene, propylene and butene are 20.37%, 18.32% and 7.52% respectively, indicating that the CPP process is mature and reliable

the special catalyst developed has good cracking activity, olefin selectivity, metal pollution resistance and excellent hydrothermal stability. The newly developed high-temperature oil and gas quenching, heat recovery and anti coking system at the outlet of the reactor achieved good results. The pyrolysis gas low pressure, intercooling and staged oil absorption process is used for CPP gas separation and recovery, which meets the process requirements, and the ethylene recovery rate reaches 99%. CPP process is a new way to develop petrochemical industry with heavy raw materials, and it has the international leading level

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