155results about How to "High cracking activity" patented technology

A process for producing aromatic hydrocarbons which comprises (a) contacting ethane with a dehyroaromatization aromatic catalyst which is comprised of about 0.005 to about 0.1 wt % platinum, an amount of gallium which is equal to or greater than the amount of the platinum, from about 10 to about 99.9 wt % of an aluminosilicate, and a binder, and (b) separating methane, hydrogen, and C_2-5 hydrocarbons from the reaction products of step (a) to produce aromatic reaction products including benzene.

The invention discloses a cracking catalyst containing mesoporous silica-alumina material, wherein the cracking catalyst is composed of cracking active components: clay, adhesive and mesoporous silica-alumina material. The mesoporous silica-alumina material is of a pseudo-boehmite crystal phase structure. In case of the weight of oxide, the anhydrous chemical expression formula is: (0-0.3) Na2O (40-90) Al2O3 (10-60) SiO2, the specific surface area is 200-400m<2>/g, pore volume is 0.5-2.0ml/g, the average pore size is 8-20nm, and the most probable pore size is 5-15nm. The adhesive is selected from one or two mixtures of silica sol or aluminum sol. Compared with the conventional catalyst with pseudo-boehmite, the cracking catalyst has the advantages of low production cost and better crude oil conversion capacity.

A catalyst for catalytic cracking process is prepared from kaolinite, solid crystal seed, assistant, organic disperser and/or adhesive through spray drying, shaping microspheres, high-temp calcining,crystallizing reaction on sodium silicate and sodium hydroxide to obtain crystallized microspheres (content of NaY zeolite is 20-70%, ratio of zeolite silica-alumina is 4.0-6.0), calcining, and exchanging with NH4 and Re3 three times. Its advantages are high resistance to heavy metal, high activity and stability, and low cost.

The invention provides a hydrogenation catalyst soaking solution composition, which comprises a precursor of a hydrogenation active ingredient, a soaking additive and water, wherein the soaking additive has similar pKa value with that of the precursor of the hydrogenation active ingredient and comprises carbon-carbon double bond and/or carbon-carbon triple bond substances in molecular structure. The invention also provides a method for preparing a hydrogenation catalyst, which comprises: using the soaking solution to soak a catalyst carrier, and drying and roasting the catalyst carrier, wherein the soaking solution is the hydrogenation catalyst soaking solution composition. The hydrogenation catalyst prepared from the hydrogenation catalyst soaking solution composition has higher hydrogenation activity and higher cracking activity at the same reaction temperature compared with a hydrogenation catalyst prepared by the prior art.

A high-activity catalyst for catalytic cracking process is prepared from kaolinite, solid seed, assistant, organic disperser and adhesive through spray drying, shaping, microspheres, high-temp calcining, crystallizing reaction on sodium silicate and sodium hydroxide to obtain crystallized microspheres content of zeolit is 20-70%, ratio of zeolit silica-alumina is 4.0-6.0), calcining, and exchanging with NH4 and Re3 three times. Its advantages are high resistance to heavy metal, high activity and stability, and low cost.

A rare-earth contained super-stable Y zeolite is prepared from the super-stable Y zeolite containing sodium oxide (3-5 wt.%), rare-earth compound and water in wt ratio of 1:(0.001-0.5):(1-10) through preparing solution of rare-earth compound, mixing and the said Y zeolite, and grinding with shearing stress of at least 10 kg/cm2 for at least 1 min. Its advantages are higher hydrothermal stability, high stability of activity, and high resistance to sodium and heavy metal pollutions.

The present invention relates to a hydrocracking catalyst for hydrocarbon oil comprising a support containing a framework-substituted zeolite-1 in which zirconium atoms and/or hafnium atoms form a part of a framework of an ultrastable y-type zeolite and a hydrogenative metal component carried thereon and a method for producing the same. The hydrocracking catalyst of the present invention makes it easy to diffuse heavy hydrocarbon oils such as VGO, DAO and the like into mesopores, is improved in a cracking activity and makes it possible to obtain a middle distillate at a high yield as compared with catalysts prepared by using zeolite comprising titanium and/or zirconium carried thereon.

The invention provides a catalytic cracking catalyst and a preparation method thereof. The catalyst comprises 5 to 65% of natural mineral matters, 10 to 60% of an oxide binder, 24 to 75% of first molecular sieves, wherein the first molecular sieves are composed of molecular sieves with pore diameters of less than 6.9 angstroms and optional Y type molecular sieves, and the amount of mesoporous protonic acid in the catalyst accounts for 20 to 70% of total acid amount. The preparation method comprises the following steps: formation of slurry including the first molecular sieves, the natural mineral matters and the inorganic oxide binder; spray drying; and treatment with alkali and compound acid. The catalytic cracking catalyst has the advantages of higher propylene yield and BTX yield when applied to catalytic cracking of petroleum hydrocarbons.

The invention discloses a hydro-conversion technology for catalytic diesel oil. The technology comprises the following steps: firstly, putting a mixture of catalytic diesel oil and hydrogen into a hydrogenation reactor and performing hydrofining reaction, and then guiding into a cracking reactor and generating contact reaction with hydrocracking catalyst layers, wherein upper and lower catalyst layers are arranged in the hydrocracking reactor; the hydrocracking catalyst in the upper layer has the properties as follows: on the basis of the total weight of the catalyst, 10%-18% of MoO3, 2%-10% of Co, 40%-90% of modified Y-shaped molecular sieve, preferably 50-80%, and the balance of aluminum silicon carrier; the hydrocracking catalyst in the lower layer has the properties as follows: on the basis of the total weight of the catalyst, 15-30% of MoO3 or WO3, 2-15% of NiO, 10%-60% of modified Y-shaped molecular sieve, preferably 20-40%; the filling mass ratio of the hydrocracking catalysts in the upper layer and the lower layer is (1:5)-(5:1). The hydro-conversion technology disclosed by the invention can further increase the device liquid yield, can reduce the hydrogenation saturation of the generated gasoline component and can increase the octane value of the gasoline component under the condition of better meeting the requirement for the conversion rate of catalytic diesel oil.

The invention relates to a catalytic cracking catalyst and a preparation method. The catalytic cracking catalyst contains a cracking activity component, clay and an adhesive, wherein the cracking activity component a first Y-type molecular sieve, a second Y-type molecular sieve and a third Y-type molecular sieve; the first Y-type molecular sieve is a rare-earth Y-type molecular sieve, the rare-earth content in the first Y-type molecular sieve is 10-25 wt% on the basis of rare-earth oxides, the cell constant is 2.440-2.472nm, the crystallinity is 35-65%, the silicon/aluminum atomic ratio in the framework is 2.5-5.0, and the product of the ratio (I1/I2) of 2theta=11.8+/-0.1 degree peak intensity I1 to 2theta=12.3+/-0.1 degree peak intensity I2 in an X-ray diffraction pattern and the rare-earth weight percent in the molecular sieve on the basis of rare-earth oxides is greater than 50; the second Y-type molecular sieve is a rare-earth-containing gas-phase overstable Y-type molecular sieve; and the third Y-type molecular sieve is a rare-earth-containing DASY molecular sieve. The preparation method comprises the following steps: preparing a slurry containing the cracking activity component, adhesive and clay, and carrying out spray drying. The catalyst has higher conversion rate and gasoline yield, and can reduce the consumption of the molecular sieves, thereby lowering the cost.

The invention discloses a catalytic cracking catalyst, a preparation method thereof and application. The catalytic cracking catalyst comprises cracking active components, clay and a binder, wherein the cracking active components include, by weight, a first Y-type molecular sieve 35-70%, a second Y-type molecular sieve 20-60% and a third Y-type molecular sieve 2-20%, and the binder is a modified alumina sol containing Cl and Si. The content of Al is 8-13 wt%, the content of Cl is 4-9 wt%, and the content of Si is 0.1-1 wt% based on the total weight of the modified alumina sol. The weight ratio of Al to Cl is 1.2-2.2:1, and the pH of the modified alumina sol is in a range of 2.2 to 5.2. The catalytic cracking catalyst has low coke selectivity and high catalytic cracking activity in heavy oil catalytic cracking process, and can obtain high yield of diesel oil.

The invention discloses a catalytic cracking catalyst, and a preparation method and application thereof. The catalytic cracking catalyst contains a cracking active composition, a mesoporous silicon aluminium material, clay and a binder, wherein the cracking active composition contains 70-100 wt% of a first Y type molecular sieve, and the first Y type molecular sieve is a rare earth Y type molecular sieve; the binder is a modified aluminium sol containing Cl and Si, and by taking the total weight of the modified aluminium sol as a reference, Al content is 8-13 wt%, Cl content is 4-9 wt%, the Al-to-Cl weight ratio is 1.2-2.2:1, the Si content is 0.1-1 wt%, and the pH value of the modified aluminium sol is 2.2-5.2. The catalytic cracking catalyst possesses relatively low coke selectivity and relatively high catalytic cracking activity during catalytic cracking of heavy oil, and also helps to obtain relatively high light oil yield.

The invention discloses a method for utilizing residues of catalyst production, comprising the following steps: (1) drying catalyst residues; (2) contacting the material obtained by the step (1) with an ammonium salt solution or alkali metal saline solution to conduct ion exchange and washing, then filtering; (3) roasting the material obtained by the step (2) at 450-750 DEG C, then exchanging, washing and filtering; and (4) mixing the material obtained by the step (3) with molecular sieve residues and water and beating, filtering, drying, and then roasting at 500-700 DEG C to obtain an active carrier; and carrying out beating and spray drying on the active carrier, ultrastable Y-type molecular sieve, alumina binder and clay to obtain a cracking catalyst. The obtained catalytic cracking catalyst has the advantages of high cracking activity, high active stability, and low yields of dry gas and coke.

The invention relates to a zirconium sol, a preparation method and applications thereof, wherein the zirconium sol has a corrosion rate of not more than 1 g/m<2>.h, the pH value of 2.5-4, and the viscosity of more than 1000 mPa.s. The preparation method comprises: carrying out first contact on a zirconium-containing salt and an alkali solution, wherein a molar ratio of Zr to OH<-> is 1:1-2; carrying out second contact on the first contact mixture and an acid, wherein a molar ratio of Zr to H<+> is 1:1-3, and preferably the temperature of the first contact is 20-30 DEG C higher than the temperature of the second contact; and carrying out third contact on the second contact mixture and an acid, wherein a molar ratio of Zr to H<+> is 1:1-3. According to the present invention, the zirconium sol is used for preparing catalytic cracking catalysts, can improve the sphericity of the catalyst, and can improve the hydrocarbon oil cracking reaction effect of the catalyst.

The invention provides a mesoporous catalytic material containing phosphorus, magnesium and rare earth. The material is characterized in that the material has a pseudo-boehmite phase structure; the anhydrous compound composition of the material is, in terms of the weight of oxides, (0-0.2)Na2O.(40-85)Al2O3.(10-55)SiO2.(0.5-10)P2O5.(0.5-5)MgO.(0.5-5)RE2O3; the specific surface area of the material is 200 to 500 m2/g; the total pore volume is 0.5 to 1.5 cm3/g; and the average pore size is 8 to 18 nm.

The invention provides a catalytic cracking catalyst, as well as a preparation method and applications thereof. Based on the total weight of the catalytic cracking catalyst, the catalyst contains 1-50wt% of a mesoporous active material, the anhydrous chemical expression of the mesoporous active material in the weight ratio of oxides is: (0-0.2)Na2O.(40-85)Al2O3.(10-55)SiO2.(0.5-10)P2O5.(0.5-10)M<x>O<y>, wherein metal M is selected from one or more of Mg, and IIB, IIIB, IVB and VIIB group elements in a periodic table, as well as lanthanide rare earth elements, y is the highest valency state of the metal M when the metal M is formed into an M oxide, and numerical value of x and the numerical value of y enable the valence of M and the valence of O to be balanced. The catalytic cracking catalyst has low coke selectivity and high catalytic cracking activity in the catalytic cracking process of heavy oil, and can obtain lower gasoline sulfur content and higher gasoline yield.

The invention discloses a catalytic cracking catalyst and a preparation method and application thereof. The catalytic cracking catalyst comprises cracking active components, clay and binders, wherein the cracking active components comprise, by weight, 25%-70% of first Y-type molecular sieves, 10%-70% of second Y-type molecular sieves and 5%-20% of third Y-type molecular sieves; the binders are modified aluminum sol containing Cl and Si, based on the total weight of the modified aluminum sol, the content of Al ranges from 8% to 13% by weight, the content of Cl ranges from 4% to 9% by weight, the weight ratio of Al to Cl is 1.2-2.2 to 1, the content of Si ranges from 0.1% to 1% by weight, and the pH value of the modified aluminum sol ranges from 2.2 to 5.2. The catalytic cracking catalyst has lower coke selectivity and higher catalytic cracking activity in the heavy oil catalytic cracking process, and a higher gasoline yield can be achieved.

The invention provides a catalytic cracking catalyst. The catalytic cracking catalyst contains clay, alumina containing an additive and a modified Y type molecular sieve. The modified Y type molecularsieve comprises 5 to 12 wt% of rare earth and no more than 0.5 wt% of sodium oxide, and has a total pore volume of 0.36 to 0.48 mL/g; the pore volume of secondary pores accounts for 20 to 38% of thetotal pore volume; a lattice constant is 2.440 nm to 2.455 nm; the content of non-framework aluminum is no more than 10% of total aluminum content; lattice collapse temperature is higher than 1060 DEGC; and a ratio of the amount of acid B to the amount of acid L is no less than 3.50. A preparation method for the catalytic cracking catalyst comprises the following steps: preparing a rare earth-containing Y type molecular sieve with a conventional cell size; carrying out roasting in a water vapor atmosphere with a temperature of 350 to 520 DEG C and a volume percentage of 30 to 95% for 4.5 to 7h; carrying out a contact reaction with silicon tetrachloride; and carrying out acid treatment. The catalytic cracking catalyst has higher heavy oil conversion activity, low coke selectivity, and higher gasoline yield, liquefied gas yield, light oil yield and total liquid yield.

The invention provides a preparation method of a porous material, which is characterized in that an aluminium source, alkali solution, NaY crystallization mother liquor and/or washing filtrate are mixed in a parallel flow mode to form glue, the glue is aged to obtain solid precipitates, and then the solid precipitates are subjected to acid mixed exchange sodium removal until sodium oxide content being smaller than 0.3%; the step of mixing to form the glue is carried out at the temperature ranging from the room temperature to 85 DEG C; in a mixing glue forming system, a pH value is controlled within a range of 7 to 11, and a weight ratio of SiO2 to Al2O3 is controlled within a range of 1:(1 to 9). The porous material obtained by adopting the method provided by the invention has the characteristics of a mesoporous, and is small in particle size and better in cracking performance.