58results about How to "Strong ability to convert heavy oil" patented technology

A catalytic cracking catalyst and its production are disclosed. The catalyst consists of clay 20 - 80m%, silica sol 5 - 30m%, pseudodiaspore 0 - 30%, faujusite with cell parameters of (2.432 - 2.472nm) 5 - 40%, and balanced of ZSM-5 zeolite, beta zeolite and their mixture, oxide selected from Sb, rare earths, Ti, Mg, Zn, P, Sr or their mixture. It uses silica sol as substrate or silica sol and pseudodiaspore as composite substrate to increase macromolecular cracking ability and to improve wearproof performance. It can be produced by non-continuous process or multi-stream continuous process with easy mass production.

The invention relates to cracking catalyst, containing rare earth ultrastable Y-type zeolite and stroma, wherein the stroma contains alumina with additive; the alumina with additive contains the following composition in percentage by weight: 60 to 99.5 percent of alumina and 0.5 to 40 percent of additive; the additive is selected from one or a plurality of compounds containing alkaline earth, lanthanide metal, silicon, gallium, boron or phosphorus elements; the rare earth ultrastable Y-type zeolite is obtained through a method comprising the following steps that: ultrastable Y-type zeolite and an acid solution with the equivalent concentration between 0.01 and 2 N are mixed with the liquid/solid weight ratio of 4 to 20 in the temperature range between 20 and 100 DEG C, stirred for 10 to 300 minutes, washed and filtered; rare earth salt solution is added in to exchange rare earth ions; the solution is washed and filtered after exchange. The catalyst is strong in heavy oil cracking capability, high in light oil yield and low in coke yield.

This invention discloses crack catalyst to decrease olefin content in catalytic cracking gasoline, which is characterized in that there is 10~50 w.t% CDY molecular sieve in the catalyst that is prepared by exchanging method of solid-liquid combination; the rare earth content is 12~22 w.t% considering the quantity of rare earth oxide; all rare earth ion is in molecular sieve small cage; there is no peak at 0ppm in 27Al M AS NMR spectrogram. The catalyst can decrease olefin content in catalytic cracking gasoline greatly with well heavy oil conversion ability.

A cracking catalyst comprises a rare earth ultra-stable Y-zeolite and a matrix, the matrix comprises a silicon oxide binder, the rare earth ultra-stable Y-zeolite is obtained by the method including the following steps: the ultra-stable Y-zeolite and the acid solution with the equivalent concentration of 0.01N to 2N are mixed within the temperature range of 20 DEG C to 100 DEG C in the liquid-solid weight ratio of 4 to 20; washing and filtration are carried out after stirring for 10 minutes to 300 minutes; rare earth salt solution is then added for carrying out the rare earth ion exchange; and washing, filtration and drying are carried out after the exchange. The catalyst of the invention is used for catalytic cracking of heavy oil, the conversion rate is high, the yield of gasoline is high and the coke yield is low.

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.

This method aims at cracking hydrocarbon oil, under cracking condition, raw material hydrocarbon oil contactes with catalyst, which is already contacted with reducing gas atmosphere. Then proceeded are procedures of: separating cracking produced from catalyst, regenerating catalyst, said catalyst being contacted with reducing gas atmosphere. In above-said procedures, the catalyst is a mixture of cracking-aid agent and catalytic-cracking catalyst, wherein: said cracking-aid agent comprising a metal component and a carrier; the contact temp. for catalyst, contactint with reducing gas atmosphere being 100-900 deg.C, with contacting time being at least 1 second, the volume of reducing gas atmosphere is that: each ton of metal-contd. cracking catalyst, at one minute contact is not less than 0.03 m3 of reducing gas, the pressure in the reactor being 0.1-0.5 mega Pa.

A descending catalytic cracker consists of a regenerating agent duct, a top cover, raw material nozzles, an outer shell, a pre-lift medium distributor, a descending reacting pipe, and a catalyst pre-lift pipe, of which the upper opening is located in the outer shell and the lower portion is communicated with the regenerating agent duct. The pre-lift medium distributor is arranged at the bottom of the catalyst pre-lift pipe. The upper portion of the outer shell is closely connected with the periphery of the top cover. The descending reacting pipe is communicated with the outer shell at its sidewall or bottom, or through two symmetrically arranged bypass pipes. The raw material nozzles are arranged on the top cover and/or the upper portion of outer shell sidewall, above the upper opening of the catalyst pre-lift pipe.

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 present invention relates to a method for modifying kaolin. The method comprises the following steps: calcined kaolin, applied aluminum source and an acid solution are added to a container in a stirring state; a mixed slurry is obtained after a uniform stirring process, and substances in the mixed slurry are subjected to a reaction through heating the mixed slurry to obtain a new slurry; and the new slurry can be used as raw materials for preparing a catalytic cracking catalyst with no filtering. The method is characterized in that the acidic solution is a mixed acid system comprising inorganic acid and organic acid. The modified kaolin has developed middle/large pore volumes, a favorable hydrothermal stability and certain L acid characteristics. A catalyst prepared from the modified kaolin slurry has a high heavy oil conversion capability.

A catalyst suitable for a two-stage catalytic cracking reaction, and a preparation method and application thereof. The catalyst is characterized by comprising five-member ring micropores, twelve-member ring micropores and mesopores in a pore volume ratio of 1:9-11:4-6 in a structure, and by being prepared from 2-12wt% of ZSM-5 molecular sieve, 20-45wt% of rare earth Y molecular sieve, 5-15wt% of aluminium sol calculated by Al2O3 and 10-30wt% of pseudo-boehmite, 0.5-5wt% of pore forming agent and the balance of kaolin into microballoons with an average particle size of 50-70mum, through slurryand spray moulding. During beating, 5-30wt% of hydrochloric acid, calculated by dry basis, is added into the pseudo-boehmite, and maintained at 40-90 DEG C for 0.1-2 h; and the rare earth Y molecularsieve contains 1-16wt% of oxidized rare earth and has a crystal cell of 2.450-2.470 nm. When applied to a catalytic cracking apparatus, in which a second stage reaction temperature is 10-35 DEG C lower than that of the first stage and an oil agent contact time of a second stage reaction is 3-6 times longer than that of the first stage, the catalyst has advantages of low oil slurry yield, high light hydrocarbon liquid yield and low sulfur and alkene in gasoline fraction.

A catalyst for catalytic cracking of hydrocarbons contains carrier, adhesive, active cracking component and active isomerizing component. It features that said active isomerizing component is composed of modified HZSM-5 molecular sieve with high Si/Al ratio and small grain modified Y-type molecular sieve. Its advantages are high output rate of light oil, and high octane number of gasoline.

The invention relates to a desulfurization additive for a product obtained by hydrocarbon oil cracking and preparation and application thereof. The additive contains the following components in percentage by weight: 3-40 percent of mesoporous material, 5-50 percent of zinc component in zinc oxide terms, 5-80 percent of clay, 10-50 percent of caking agent in oxide terms and 0.1-10 percent of metal(s), except for zinc, in oxide terms; and the metal(s) except for the zinc is(are) one or a plurality of lanthanide metal, Ti, Co, Ni, Fe, Mn, Ga and Zr. The preparation method of the additive comprises the following steps of: (1) mixing the mesoporous material and deionized water, adding a zinc-containing compound, mixing and pulping, and mixing and pulping the obtained slurry and a compound of the metals except for the zinc; (2) mixing the slurry obtained in the step (1) and the clay; (3) mixing the slurry obtained in the step (2) and the caking agent; and (4) carrying out spray drying on the slurry obtained in the step (3), and roasting. The additive provided by the invention has higher conversion rate and desulfurization performance and high gasoline yield.

The invention relates to a catalytic cracking catalyst and a preparation method thereof. The catalytic cracking catalyst comprises, on the basis of dry base weight, 25 to 75 wt% of a Y molecular sieverich in mesopores, 10 to 30 wt% of an inorganic oxide binder and 15 to 65 wt% of natural mineral matters, wherein the Y molecular sieve rich in mesopores has a cell parameter of 24.35 to 24.55 angstroms and relative crystallinity of no less than 92%; the distribution parameter D of Al in the molecular sieve is no less than 0.3 and no more than 0.8; the micropore specific area of the molecular sieve is 650 to 800 m<2>/g; and the mesopore volume of the molecular sieve accounts for 25 to 65% of total pore volume. The catalytic cracking catalyst provided by the invention has the advantages of excellent heavy oil conversion capability and higher gasoline yield when applied to catalytic cracking of heavy oil.

The invention provides a catalytic cracking catalyst containing a rare earth Y-type molecular sieve. The catalyst contains the rare earth Y-type molecular sieve, an inorganic oxide binder and a natural mineral substance, and is characterized in that the rare earth Y-type molecular sieve at least has mesoporous pore size distribution at 2-3 nm, 3-4 nm and 10-30 nm, and in a BJH pore size distribution spectrogram, the ratio of the peak area of 2-3 nm pore size distribution to the peak area of the total pores is greater than 0.1, and the ratio of the peak area of 10-30 nm pore size distribution to the peak area of the total pores is greater than 0.2.

The invention provides a catalytic cracking catalyst and a preparation method thereof, wherein the catalyst contains (calculated as the dry base weight) 25-75 wt% of a phosphorus-containing and rare earth-containing Y molecular sieve, 10-30 wt% of an inorganic oxide binder, and 15-65 wt% of natural minerals, wherein the unit cell parameter of the phosphorus-containing and rare earth-containing Y molecular sieve is 24.35-24.55 angstrom, the phosphorus content of the molecular sieve is 0.3-10 wt%, the rare earth content of the molecular sieve is 0.5-19 wt%, the Al distribution parameter D of themolecular sieve is more than or equal to 0.4 and is less than or equal to 0.9, the volume of the mesopores of the molecular sieve accounts for 20-65% of the total pore volume, the amount of the strong acid of the molecular sieve accounts for 20-60% of the total acid amount, and a ratio of the acid B to the acid L is 20-100. According to the present invention, the catalytic cracking catalyst has advantages of excellent heavy oil conversion capability, high gasoline yield, high liquefied gas yield and low coke yield in the catalytic cracking of heavy oil.

The invention provides a preparation method of a heavy oil catalytic cracking catalyst. A synthesis method comprises the specific steps that kaolin is beaten, and subjected to spray drying to form microspheres, then high-temperature roasting and low-temperature roasting are conducted respectively to obtain roasted kaolin spheres and metakaolin spheres, the roasted kaolin spheres are subjected to alkali treatment and then mixed with a guiding agent and alkali liquor, after hydrothermal crystallization is conducted for a period of time, the metakaolin spheres subjected to acid treatment are added for continuing crystallization, and filtering, washing with water and drying are conducted to obtain NaY molecular sieve microspheres. According to the preparation method, under the situation that the molecular sieve crystallinity degree is not decreased, the utilizing rate of a silicon source is increased without additionally adding the silicon source, the silica-alumina ratio of a molecular sieve is greater than 5.5, a composite material has a good hole structure, and the catalytic cracking catalyst prepared through modification has the good heavy oil conversion capacity.