61results about How to "Increase isohydrocarbon content" patented technology

The invention relates to the technical field of catalysts, in particular to a catalyst for preparing gasoline by coupling naphtha and methanol and a preparation method of the catalyst. The catalyst isprepared from a component A, a component B and a component C, wherein the component A is prepared from a metal-modified small-grain HZSM-5 molecular sieve; the component B is prepared from one or more of a metal-modified HZSM-5 molecular sieve, an HZSM-22 molecular sieve, an HZSM-35 molecular sieve, an Hbeta zeolite molecular sieve and an H-type mordenite molecular sieve; the component C is prepared from a metal complex oxide. The catalyst provided by the invention has the functions of light hydrocarbon aromatization and methanol alkylation, and greatly reduces the content of durene; and thecatalyst provided by the invention has an isomerization function. and effectively increases the octane number of gasoline; and the catalyst provided by the invention has a desulfurization function, and effectively reduces the sulfur content of gasoline, so that the sulfur content of an obtained product is lower than 10ppm, and is up to the national V standard.

The invention discloses a flexible reverse-sequence hydrocracking process. The process comprises the following steps: mixing wax oil raw oil with a hydrocracked material; carrying out hydrogenation pretreatment; carrying out separation fractionation on the hydrogenation pretreated material flow to obtain gas, distillate oil and tail oil; carrying out hydrocracking pretreatment on the obtained tailoil, allowing the tail oil to pass through a first hydrocracking catalyst bed layer in a hydrocracking reactor to obtain a material, and dividing the obtained material into two streams; separating one material stream in a separator, extracting the obtained liquid phase out of the hydrocracking reactor, and subjecting the liquid phase to an isomerization cracking reaction in a hydroisomerization cracking reactor; allowing the other material stream to flow downward to pass through a second hydrocracking catalyst bed layer; and carrying out gas-liquid separation and fractionation on a hydroisomerization cracking reaction product to obtain hydroisomerization cracked naphtha, aviation kerosene, diesel oil and tail oil products. The invention provides the hydrocracking process for simultaneously producing more than two different-specification light naphtha, heavy naphtha, aviation kerosene, diesel oil and tail oil products on a set of hydrogenation process equipment.

The invention discloses a regular carrier catalyst with a desulfurization effect as well as preparation and application thereof. The regular carrier catalyst comprises a regular carrier and an activecoating attached to the surface of the regular carrier, wherein the active coating comprises a matrix containing IIA and IIB group metal oxides and a modified metal film attached to the outer surfaceof the matrix, the modified metal film comprises a modified metal, and the modified metal comprises one or more of Cr, Mo and W. The preparation method comprises the following steps: forming a mixturefrom metal powder, a hydroxyl-containing solvent and a surfactant, then treating the mixture under ultrasonic waves to obtain a mixed solution after the ultrasonic treatment; after the ultrasonic treatment, separating the mixed solution to obtain suspension; contacting the suspension with matrix particles, carrying out freeze drying to obtain matrix particles containing a modified metal film, andcoating the regular carrier with the matrix particles containing the modified metal film to obtain the regular carrier catalyst. The catalyst is used for hydrocarbon hydro-desulfurization, has high desulfurization activity and good stability, and can reduce the octane number loss of gasoline.

The invention discloses a flexible hydrocracking process for producing lubricant base oil. A material obtained after a wax oil raw material is subjected to hydrogenation pretreatment is divided into two parts; a part of the material is separated by a hot high-pressure separator to obtain a liquid phase, and the liquid phase is mixed with hydrogen and then passes through a hydrocracking catalyst bed layer containing a Y-type molecular sieve; the other part of the material is mixed with a gas phase obtained by hot high-pressure separation and hydrocracking tail oil and then passes through a hydroisomerization cracking catalyst bed layer containing an isomerization cracking type molecular sieve; a hydrocracking reaction product and a hydroisomerization cracking reaction product are subjectedto gas-liquid separation and fractionation separately to obtain distillate oil and tail oil products with different specifications; and the hydrocracking tail oil is partially or completely circulatedinto the isomerization cracking reactor. The process provided by the invention can be used for simultaneously producing more than two kinds of naphtha, aviation kerosene, diesel oil and tail oil products with different specifications on one set of hydrogenation process equipment, especially producing high-quality lubricant base oil.

The invention discloses a modified molecular sieve for hydro-desulfurization as well as preparation and application thereof. The modified molecular sieve comprises a molecular sieve and a modifying metal film positioned on the outer surface of molecular sieve particles, wherein the modifying metal film contains one or more first modifying metals selected from Fe, Co, Ni and Mn and optional B. Thepreparation method of the modified molecular sieve comprises the following steps: forming a mixture from metal powder, a hydroxyl-containing solvent and a surfactant, then treating the mixture under ultrasonic waves to obtain a mixed solution after the ultrasonic treatment; separating the mixed solution after the ultrasonic treatment to obtain suspension, mixing the suspension with a molecular sieve, and carrying out freeze-drying to obtain the modified molecular sieve. The modified molecular weight is used for hydro-desulfurization of sulfur-containing hydrocarbons, has high activity and stability, can obviously reduce the olefin content, increase the iso-hydrocarbon content and increase the octane number of gasoline when used for gasoline desulfurization, and has a high gasoline yield.

The invention discloses a regular carrier catalyst with a desulfurization effect as well as preparation and application thereof. The regular carrier catalyst comprises a regular carrier and an activecoating attached to the outer surface of the regular carrier, the active coating comprises a IIA and IIB group metal oxide-containing matrix, a molecular sieve and a modified metal film, and the modified metal film comprises nickel and one or more rare earth metals selected from lanthanum, cerium, praseodymium and neodymium. The preparation method comprises the following steps: forming a mixture from metal powder, a hydroxyl-containing solvent and a surfactant, then treating the mixture under ultrasonic waves to obtain a mixed solution after the ultrasonic treatment; separating the mixed solution after the ultrasonic treatment to obtain suspension; contacting the suspension with matrix particles and/or molecular sieve particles or particles containing a matrix and a molecular sieve, carrying out freeze-drying, and then coating on a regular carrier. The catalyst can be used for hydro-desulfurization of hydrocarbon fuel, has the characteristics of high activity and good stability, is used for gasoline desulfurization, and can increase the octane number of gasoline.

The invention discloses a flexible vaseline hydrogenation process. A vaseline raw material enters a hydrofining reactor, and the material passing through an upper hydrofining catalyst bed layer is divided into two streams; one material stream is separated by a gas-liquid separator arranged in the middle of the bed layer, and the obtained liquid is extracted out of the hydrofining reactor and mixedwith hydrogen and then enters a hydroisomerization reactor to be subjected to an isomerization reaction; the other material stream is a mixture stream of gas in the reactor and a residual liquid after extraction, and the mixture stream flows downwards through a hydrofining catalyst bed layer at the lower part; and an obtained hydrofining reaction material and an obtained hydroisomerization reaction material are respectively subjected to gas-liquid separation and fractionation to obtain vaseline products with different specifications. The invention provides the hydrogenation process for simultaneously producing more than two vaseline products with different specifications on a set of hydrogenation process equipment for the first time, heat carried by part of hydrofined materials can be fully utilized, and coupling operation of the hydrofining reactor and the hydroisomerization reactor can be realized.

The invention discloses a high-stability modified Y-type molecular sieve for high production of isomerized C4 and a preparation method of the high-stability modified Y-type molecular sieve. The CaO content of the modified Y-type molecular sieve is 0.3-4 wt%, the RE2O3 content is 2 to 7 wt%; the content of Na2O is 0.1 to 0.5 wt%; the total pore volume is 0.33 mL/g to 0.39 mL/g; the pore volume of the secondary pores of 2-100nm accounts for 10-25% of the total pore volume; the lattice constant is 2.440-2.455 nm, the content of non-framework aluminum accounts for not more than 20% of the total aluminum content, the lattice collapse temperature is not lower than 1050 DEG C, and the ratio of the amount of acid B to the amount of acid L measured by a pyridine adsorption infrared method at 200 DEG C is not lower than 2.30. The preparation method comprises the steps of ion exchange, modification treatment under certain temperature and water vapor conditions and reaction with silicon tetrachloride. The modified Y-type molecular sieve has higher heavy oil conversion activity, lower coke selectivity, higher gasoline yield and isomeric C4 yield, and higher isomeric hydrocarbon content in gasoline.

The invention discloses a flexible hydrocracking method for producing lubricant base oil. The method includes dividing a wax oil raw material subjected to hydrogenation pretreatment into two parts; separating one part of the material by a hot high-pressure separator to obtain a gas phase and a liquid phase; mixing the other part of the material with the gas phase obtained by hot high-pressure separation and circulating hydrogen, and allowing the mixture to pass through a hydrocracking catalyst bed layer containing a Y-type molecular sieve; mixing the liquid phase obtained by hot high-pressureseparation with hydrocracking tail oil and circulating hydrogen, and allowing the mixture to pass through a hydroisomerization cracking catalyst bed layer containing an isomerization cracking type molecular sieve; respectively carrying out gas-liquid separation and fractionation on a hydrocracking reaction product and a hydroisomerization cracking reaction product to obtain distillate oil and tailoil products with different specifications; and partially or completely circulating the hydrocracking tail oil to an isomerization cracking reactor. The invention provides the flexible hydrocrackingmethod for simultaneously producing more than two kinds of naphtha, aviation kerosene, diesel oil and tail oil products with different specifications on a set of hydrogenation process equipment for the first time, especially high-quality lubricant base oil.

The catalytic cracking catalyst comprises a modified Y-type molecular sieve, an alumina binder and clay; according to the modified Y-type molecular sieve, the CaO content of the modified Y-type molecular sieve is 0.3-4% by weight, the RE2O3 content is 2 to 7 wt%, the content of sodium oxide is 0.1 wt%-0.5 wt%, the total pore volume is 0.33 mL/g to 0.39 mL/g, the pore volume of secondary pores withthe pore diameter of 2nm-100nm of the modified Y-type molecular sieve accounts for 10%-25% of the total pore volume, the lattice constant is 2.440 to 2.455nm, the content of non-framework aluminum inthe modified Y-type molecular sieve is not higher than 20% of the total aluminum content, the lattice collapse temperature is not lower than 1050 DEG C, and the ratio of the amount of acid B to the amount of acid L is not lower than 2.30. The catalytic cracking catalyst has the advantages of higher heavy oil conversion activity, lower coke selectivity, higher gasoline yield, higher isomeric C4 yield and higher isomeric hydrocarbon content in gasoline.

The invention discloses a regular carrier catalyst with a desulfurization effect as well as preparation and application thereof. The regular carrier catalyst comprises a regular carrier and an activecoating attached to the surface of the regular carrier, wherein the active coating comprises a heat-resistant inorganic oxide matrix and a modified metal film, the modified metal film comprises a modified metal, and the modified metal is one or more of Fe, Co, Ni, Mn, Ti, Zr, V, Ge, Pb, Sn, Sb and Bi. The preparation method comprises the following steps: forming a mixture from metal powder, a hydroxyl-containing solvent and a surfactant, then treating the mixture under ultrasonic waves to obtain a mixed solution after the ultrasonic treatment; separating the mixed solution after the ultrasonictreatment to obtain suspension; contacting the suspension with matrix particles, carrying out freeze drying so as to obtain matrix particles containing a modified metal film, and then coating the regular carrier with the matrix particles containing the modified metal film so as to obtain the regular carrier catalyst. The catalyst is high in desulfurization activity, good in stability and high inproduct yield, is used for gasoline desulfurization and is small in octane number loss.

The invention relates to a modified molecular sieve for hydro-desulfurization and preparation and application thereof. The modified molecular sieve comprises a molecular sieve and a modifying metal film, and the modifying metal film is located on the outer surface of molecular sieve particles; wherein the modifying metal film contains a modifying metal, the modifying metal comprises a first metaland an optional second metal, the first metal is one or more of Ge, Sn and Pb, and the second metal is Bi and/or Sb and/or Ga. The preparation method comprises the following steps: forming a mixturefrom metal powder, a hydroxyl-containing solvent and a surfactant, then treating the mixture under ultrasonic waves to obtain a mixed solution after the ultrasonic treatment; separating the mixed solution after the ultrasonic treatment to obtain suspension, mixing the suspension with a molecular sieve, and carrying out freeze-drying to obtain the modified molecular sieve. The modified molecular sieve can be used for hydro-desulfurization of sulfur-containing hydrocarbons, has the characteristics of high desulfurization activity, high stability and good selectivity, is used for gasoline desulfurization, and can improve the octane number of gasoline.

The invention discloses a regular carrier catalyst with a desulfurization effect as well as preparation and application thereof. The regular carrier catalyst comprises a regular carrier and an activecoating attached to the surface of the regular carrier, wherein the active coating comprises a matrix containing IIA and IIB group metal oxides and a modified metal film attached to the outer surfaceof the matrix, the modified metal film comprises a modified metal, and the modified metal is one or more of Fe, Co, Ni, Mn, Ti, Zr, V, Ge, Pb, Sn, Sb and Bi. The preparation method comprises the following steps: forming a mixture from metal powder, a hydroxyl-containing solvent and a surfactant, then treating the mixture under ultrasonic waves to obtain a mixed solution after the ultrasonic treatment; separating the mixed solution after ultrasonic treatment to obtain suspension; contacting the suspension with matrix particles, carrying out freeze drying to obtain matrix particles containing amodified metal film, and coating the regular carrier with the matrix particles containing the modified metal film to obtain the regular carrier catalyst. The catalyst is used for hydrocarbon hydro-desulfurization, has high desulfurization activity and good stability, and can reduce the octane number loss of gasoline.