The quality of liquid oil was improved obviously after catalytic pyrolysis, and the gasoline and diesel products were qualified in reference to GB484 93 standard for gasoline product used in automobile and GB252 94 national standard for light diesel product.
had decreases the alcene of FCC full range gasoline from 55 %(V) to less than 35 %(v),desulphurization rate more than 85 %,and keeping the octane number of gasoline product unchanged. Gasoline recovery is more than 99.5 %.
DOCO olefin-reducing catalyst and MGD (Maximizing Gas and Diesel) process were adopted in combination in PetroChina Daqing Petrochemical Co. , Ltd. to reduce olefin content in the gasoline product of a 1.40 Mt·a~(-1) heavy oil FCC unit.
It has passed the technical appraisal of SINOPEC and is important for refineries to assure the quality of their gasoline product and to increase the yield of light fractions.
In order to cater the market demand and increase profit margin,Zhenghai Refining & Chemical Company has modified its gasoline product lines and focused on producing high quality 98# gasoline.
When the La content in La/HL zeolite is 0.2%～0.5%, the content of aromatics in the product increases obviously and the RON of gasoline increases by 1.24～2.06.
The result showed that, with the increase of the content of β zeolite in the catalyst, the MAT, the i C = 4 content in the gaseous product and the RON of the obtained gasoline increase, while the deposited coke decreases.
With complex catalysts whose active components contain zeolite USY? ZSM-5 and β zeolite in mixed proportions,the RON of the gasoline obtained increases by 2 05 and the yield of ( i C 4 =+ i C 5 =) increases by 1 5 % as compared to USY catalyst.
The product material from the benzene reduction unit is a component of the refinery's gasoline product.
In fixed-bed bench scale unit, hydrocracking of hydrotreated coal-derived distillate with 3825 catalyst(Ni-Mo/SiO_2-Al_2O_3) was performed to produce gasoline and BTX reforming stocks. Effect of reaction temperature (350℃-390℃ on hydrocracking conversion, hydrogen consumption, product distribution and properties were examined under conditions of pressure 14.7 MPa, LHSV 1.5 h~(-1) and H_2/oil 1600 vol/vol. Experimental results showed that 385℃ was the suitable temperature for production of gasoline. At this temperature,...
In fixed-bed bench scale unit, hydrocracking of hydrotreated coal-derived distillate with 3825 catalyst(Ni-Mo/SiO_2-Al_2O_3) was performed to produce gasoline and BTX reforming stocks. Effect of reaction temperature (350℃-390℃ on hydrocracking conversion, hydrogen consumption, product distribution and properties were examined under conditions of pressure 14.7 MPa, LHSV 1.5 h~(-1) and H_2/oil 1600 vol/vol. Experimental results showed that 385℃ was the suitable temperature for production of gasoline. At this temperature, conversion of>180℃ distillate reached 89w%, and a 87w% yield of gasoline fraction was obtained with 2.9 w% hydrogen consumption.The composition and properties of hydrocracking products were also analyzed in detail. The quality of the gasoline fraction met RQ-75(GB484-77) specificatio(?0 substantially with octane number 75. The gasoline fraction is capable of producing high-octane blend by reforming.Possessing more than 75w% of potential aromatic content and less than 0.5ppm of nitrogen content, the C_6-145℃ product is an excellent BTX reforming stocks.
This paper presents the experimen results of the catalytic cracking/reforming of a heary crude oil over the HZSM-5 catalyst. The conversion of the crude oil reached 60～80%within the reaction temperature range of 450～550℃and 1.8～4.2h~(-1) WHSV at atmospheric pressure. The yields of the gasoline range products reached 40～55%, which contained 70～85% aromatics. This paper also discussed the reaction mechanism and proposed a two-step reaction for the catalytic cracking/reforming of heavy hydrocarbons over the HZSM-5...
This paper presents the experimen results of the catalytic cracking/reforming of a heary crude oil over the HZSM-5 catalyst. The conversion of the crude oil reached 60～80%within the reaction temperature range of 450～550℃and 1.8～4.2h~(-1) WHSV at atmospheric pressure. The yields of the gasoline range products reached 40～55%, which contained 70～85% aromatics. This paper also discussed the reaction mechanism and proposed a two-step reaction for the catalytic cracking/reforming of heavy hydrocarbons over the HZSM-5 catalyst.
This article describes an explosion-proof saturated vapor pressure on-line analyzer,type ZXZ-Ⅰ, which is suitable for use in refineries to continuously monitor the va- por pressure of gasoline or other light fractions. Several years of field application has verified that the performance of this analyzer has reached or exceeded the technical level of the same kind analyzers available both in China and abroad. It has passed the technical appraisal of SINOPEC and is important for refineries to assure the quality...
This article describes an explosion-proof saturated vapor pressure on-line analyzer,type ZXZ-Ⅰ, which is suitable for use in refineries to continuously monitor the va- por pressure of gasoline or other light fractions. Several years of field application has verified that the performance of this analyzer has reached or exceeded the technical level of the same kind analyzers available both in China and abroad. It has passed the technical appraisal of SINOPEC and is important for refineries to assure the quality of their gasoline product and to increase the yield of light fractions.
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