Deep Catalytic Cracking （DCC） developed by RIPP （Research Institute of Petroleum Processing）, SINOPEC is a catalytic conversion process derived from the FCC process using heavy feedstocks for producing raw materia...Deep Catalytic Cracking （DCC） developed by RIPP （Research Institute of Petroleum Processing）, SINOPEC is a catalytic conversion process derived from the FCC process using heavy feedstocks for producing raw materials used in the petrochemical industry, such as ethylene and propylene. It was firstly demonstrated in 1990 and has been commercialized since 1994. Up to now, seven units have been put into production inside and outside China, and many other DCC units are under construction and in the phase of design now. Products ofpropylene and ethylene from DCCU have been used as feedstock for manufacturing high quality polypropylene, polyethylene and acrylonitrile. Many innovations on technological process, and preparation of catalytic materials used in the DCC process will be presented in this paper.展开更多
HPMo-loaded Y-zeolites were prepared for the removal of trace olefins from aromatic hydrocarbons. The temperature of calcination and the proportion of phospho-molybdic acid in the catalyst were studied. The catalytic ...HPMo-loaded Y-zeolites were prepared for the removal of trace olefins from aromatic hydrocarbons. The temperature of calcination and the proportion of phospho-molybdic acid in the catalyst were studied. The catalytic activity for olefins removal and the service life of the catalyst were tested in a fixed bed microreactor. The results showed that the catalyst containing 3% phospho-molybdic acid, which was calcined at 550℃, demonstrated the best activity for olefins removal. The catalyst could be regenerated and could perform still very well. Catalyst characterization was performed by XRD and measured by pyridine-FTIR spectrometry. The test results indicated that the activity of the catalyst was related with the effect of acid concentration and acid strength. Besides, the deactivation of the catalyst was associated with the formation of coke deposits and the deactivated catalyst could recover its activity by oxidation with air under a proper temperature.展开更多
The process of benzene hydrogenation over Mo2C catalyst has been studied. Mo2C was the active phase in benzene hydrogenation. The major problem with the metal carbides was their poor stability due to deactivation by c...The process of benzene hydrogenation over Mo2C catalyst has been studied. Mo2C was the active phase in benzene hydrogenation. The major problem with the metal carbides was their poor stability due to deactivation by carbon deposition.展开更多
The evaluation testing of propylene promoter LCC-A was carried out in a bench scale fixed fluidized bed reactor and a pilot scale riser. The commercial application experiments on this promoter were conducted in the #3...The evaluation testing of propylene promoter LCC-A was carried out in a bench scale fixed fluidized bed reactor and a pilot scale riser. The commercial application experiments on this promoter were conducted in the #3 RFCCU at Dalian Petrochemical Co. and #1 integrated refining unit at Shanghai Petro- chemical Co. The test results have shown that after adding 5%—6% of the promoter LCC-A to the main FCC catalyst the propylene yield and selectivity were raised obviously. The octane rating of FCC gasoline was increased by more than one unit; which could alleviate the negative impact of octane number decline resulted from reduction of olefin content in FCC naphtha along with an increased propylene yield to meet the urgent market demand for propylene. The test results achieved at Shanghai Petrochemical Company have revealed that when the addition of the LCC-A promoter reached 5% of the catalyst inventory, its performance could be on a par with that of the overseas promoter OlefinsMax.展开更多
文摘Deep Catalytic Cracking （DCC） developed by RIPP （Research Institute of Petroleum Processing）, SINOPEC is a catalytic conversion process derived from the FCC process using heavy feedstocks for producing raw materials used in the petrochemical industry, such as ethylene and propylene. It was firstly demonstrated in 1990 and has been commercialized since 1994. Up to now, seven units have been put into production inside and outside China, and many other DCC units are under construction and in the phase of design now. Products ofpropylene and ethylene from DCCU have been used as feedstock for manufacturing high quality polypropylene, polyethylene and acrylonitrile. Many innovations on technological process, and preparation of catalytic materials used in the DCC process will be presented in this paper.
文摘HPMo-loaded Y-zeolites were prepared for the removal of trace olefins from aromatic hydrocarbons. The temperature of calcination and the proportion of phospho-molybdic acid in the catalyst were studied. The catalytic activity for olefins removal and the service life of the catalyst were tested in a fixed bed microreactor. The results showed that the catalyst containing 3% phospho-molybdic acid, which was calcined at 550℃, demonstrated the best activity for olefins removal. The catalyst could be regenerated and could perform still very well. Catalyst characterization was performed by XRD and measured by pyridine-FTIR spectrometry. The test results indicated that the activity of the catalyst was related with the effect of acid concentration and acid strength. Besides, the deactivation of the catalyst was associated with the formation of coke deposits and the deactivated catalyst could recover its activity by oxidation with air under a proper temperature.
文摘The process of benzene hydrogenation over Mo2C catalyst has been studied. Mo2C was the active phase in benzene hydrogenation. The major problem with the metal carbides was their poor stability due to deactivation by carbon deposition.
文摘The evaluation testing of propylene promoter LCC-A was carried out in a bench scale fixed fluidized bed reactor and a pilot scale riser. The commercial application experiments on this promoter were conducted in the #3 RFCCU at Dalian Petrochemical Co. and #1 integrated refining unit at Shanghai Petro- chemical Co. The test results have shown that after adding 5%—6% of the promoter LCC-A to the main FCC catalyst the propylene yield and selectivity were raised obviously. The octane rating of FCC gasoline was increased by more than one unit; which could alleviate the negative impact of octane number decline resulted from reduction of olefin content in FCC naphtha along with an increased propylene yield to meet the urgent market demand for propylene. The test results achieved at Shanghai Petrochemical Company have revealed that when the addition of the LCC-A promoter reached 5% of the catalyst inventory, its performance could be on a par with that of the overseas promoter OlefinsMax.
