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

This invention discloses a method for raising rare earth content in super-stable Y-type zeolite. The method comprises: mixing super-stable Y-type zeolite and 0.01-2 N acid solution at a liquid / solid ratio of 4-20 at 20-100 deg.C, treating for 10-300 min, washing, filtering, adding rare earth salt solution for rare earth ion exchange, washing, filtering, and drying to obtain rare earth reinforced super-stable Y-type zeolite. The obtained rare earth reinforced super-stable Y-type zeolite has through pores without any blockage, and has obviously raised rare earth content. Cracking catalyst containing the rare earth reinforced super-stable Y-type zeolite as the active component has high heavy oil conversion ability.

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 present invention relates to a cracking catalyst comprising layered clays and a process for cracking hydrocarbon oils using said catalyst. Said catalyst is prepared by the process comprising the following steps: mixing and slurrying an expandable clay, a modifier component, pseudo-boehmite and water for 0.1-10 h to obtain a slurry, aging the slurry at 50-85° C. for 0.1-10 h, then drying and forming the slurry to obtain a formed material, water washing and aging the solid, and finally drying and calcining the solid, and said modifier being one or more selected from the group consisting of hydroxyl polymers of silicon, aluminum, zirconium or titanium, and substances comprising one or more of said hydroxyl polymers. Said process for cracking hydrocarbon oils comprises contacting a hydrocarbon oil with a catalyst under the cracking conditions, said catalyst being the aforesaid cracking catalyst comprising layered clays or a mixture of at least 1% by weight of said cracking catalyst comprising layered clays and a prior cracking catalyst. The catalyst according to the present invention has an improved ability to convert heavy oils. The process according to the present invention for cracking hydrocarbon oils has higher conversion of hydrocarbon oils and higher yield of light oils.

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 relates to a super-stable Y-type molecular sieve containing phosphorus and rare earth, wherein the Y-type molecular sieve contains 4-11 wt% of rare earth, 0.05-10 wt% of phosphorus and 0.1-0.7 wt% of sodium oxide, and has the pore volume of 0.33-0.39 mL / g, the pore volume of the pores with the pore size of 2-100 nm accounts for 15-30% of the total pore volume, the unit cell constantis 2.440-2.455 nm, the non-framework aluminum accounts for less than 20% of the total aluminum, the lattice collapse temperature is more than 1050 DEG C, and a ratio of the amount of B acid to the amount of L acid is not less than 2.50. The preparation method comprises: preparing a rare earth-containing Y-type molecular sieve having a conventional unit cell size, calcining for 4.5-7 h at a temperature of 350-480 DEG C under 30-90% by volume of steam atmosphere, carrying out phosphorus modification treatment, and carrying out a contact reaction with silicon tetrachloride gas. According to the present invention, the Y-type molecular sieve has advantages of good hydrothermal stability, high heavy oil conversion activity, low coke selectivity, high heavy oil conversion diesel yield, high liquefied gas yield and high total liquid recovery.

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.