1751 results about "Cracking" patented technology

A catalyst system and process for combined cracking and selective hydrogen combustion of hydrocarbons are disclosed. The catalyst system contains at least one solid acid component and at least one metal-based component which consists of (a) oxygen and/or sulfur and (b) a metal combination selected from the group consisting of: i) at least one metal from Group 3 and at least one metal from Groups 4-15 of the Periodic Table of the Elements; ii) at least one metal from Groups 5-15 of the Periodic Table of the Elements, and at least one metal from at least one of Groups 1, 2, and 4 of the Periodic Table of the Elements; iii) at least one metal from Groups 1 and 2, at least one metal from Group 3, and at least one metal from Groups 4-15 of the Periodic Table of the Elements; and iv) two or more metals from Groups 4-15 of the Periodic Table of the Elements, wherein the at least one of oxygen and sulfur is chemically bound both within and between the metals and, optionally, (3) at least one of at least one support, at least one filler and at least one binder. The process is such that the yield of hydrogen is less than the yield of hydrogen when contacting the hydrocarbons with the solid acid component alone. Further the emissions of NOx from the regeneration cycle of the catalyst system are reduced.

A method for producing propylene and gasoline diesel-oil by two-section catalyzed cracking style is carried out by adopting two-section lift pipe catalyzing process and catalyst with molecular sieve, taking heavy petroleum hydrocarbon or various animal and vegetable oils containing hydrocarbon as raw materials, optimization combining by charging style for various reactants, and controlling proper reactive conditions. It can improve propene and light-oil recovery rate and quality, and inhibit to generate dry gas and coke.

A method for thermally cracking a feed composed of whole crude oil and/or natural gas condensate using a vaporizer to vaporize the feed before cracking same, recovering pyrolysis gas oil from the cracked feed, subjecting the recovered pyrolysis gas oil to hydrocracking to form a paraffinic hydrocracked product, and passing at least part of the hydrocracked product to the vaporizer as additional thermal cracking feed.

The present invention discloses a catalytic cracking diesel fuel hydroconversion method. According to the method, catalytic diesel fuel and hydrogen are mixed and then enter a hydrorefining reactor to carry out a hydrorefining reaction; the hydrorefining reaction effluent directly enters a hydrocracking reactor and then is subjected to a contact reaction with the grading catalyst bed layer inside the hydrocracking reactor, wherein at least two cracking catalyst bed layers are arranged inside the hydrocracking reactor, and the hydrogenation activity of the hydrocracking catalyst presents the decrease tendency according to the reaction material flowing direction; and the hydrocracking reaction effluent is subjected to separation and fractionation to obtain the naphtha and the diesel fuel. With the method of the present invention, the diesel fuel hydrocracking effect can be ensured while the excessive hydrogenation and the secondary cracking of the naphtha can be reduced and the chemical hydrogen consumption can be reduced so as to increase the octane number and the liquid yield of the naphtha.

The invention discloses a catalyst for waste plastic microwave pyrolysis and a preparation method thereof. The catalyst comprises the following components by mass percent: 50.0-90.0% of a microwave absorption component, 9.0-49.9% of a catalytic cracking component, and 0.1-1.0% of a coking inhibiting component. The invention also discloses the preparation method of the catalyst. Compared with the prior art, the catalyst has the advantages that firstly, the catalyst has multiple functions, can effectively convert the microwave electromagnetic energy into heat, provides necessary energy for waste plastic pyrolysis and catalytic cracking, and can reach high equilibrium temperature in action; secondly, the yield of liquid pyrolysis oil is high, no coke is generated in the pyrolysis or the coke is loose and is easy to clear away; and thirdly, the preparation method of the catalyst is simple and is applicable to industrial production.

Crude oil can be refined through a filtration media. Cavitation bubbles having localized areas of very high temperatures and pressures may be created thereby causing several physical and chemical phenomena, including thermal cracking of carbon-carbon bonds as the crude moves through the flux cartridge membrane. Heavy hydrocarbons are residues are thereby cracked into smaller lowering boiling molecules having a higher API gravity. Once the relatively smaller hydrocarbons pass through the flux cartridge membrane into the flux cartridge, the effluent can be routed to a second separator annulus. It should also be pointed out that lighter hydrocarbons formed can volatilize and special provisions may be needed to efficiently capture these gases.

A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of silica containing at least 97% by volume of pores having a pore size ranging from about 15 Å to about 30 Å and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2θ. The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.

Provided is a method of preparing a ZSM-5 catalyst for preparing light olefins including ethylene and propylene through a catalytic cracking of a hydrocarbon mixture of C4 to C7 produced after a naphtha cracking. The method includes (a) forming a gel by aging a mixture solution including a silica precursor and an aluminum precursor; (b) adding a template possibly forming mesopores through a heat treatment, into the gel, stirring and then aging; (c) forming a solid product by crystallizing the aged mixture in step (b); and (d) heat treating the solid product to remove the template. The ZSM-5 catalyst may include micropores and mesopores and may have good physical and chemical properties along with a good pore property. The production yield of the light olefins may be increased.

The invention provides a method for producing light olefins and monocyclic aromatic hydrocarbons from heavy hydrocarbons. The method produces qualified catalytic cracking raw materials through hydrogenation by taking wax oil and residual oil as raw materials, returns light cycle oil and heavy cycle oil which are catalytic cracking by-products to a hydrogenation unit for the catalytic cracking rawmaterials at the same time, hydrogenates the catalytic cracking by-products together with the catalytic cracking raw materials, and then takes the obtained product as the catalytic cracking raw materials to produce light olefins and monocyclic aromatic hydrocarbons. By introducing the residual oil before a second reaction zone of hydrogenation, the method widens the sources of the catalytic cracking raw materials, increases the processing amount of low-value residual oil, and solves the problem of the heat balance of catalytic cracking units. The light and heavy cycle oil of catalytic cracking is introduced into the hydrogenation unit, hydrogenated and then taken as the catalytic cracking raw materials, so that the yield of high-value products of the catalytic cracking units can be increased, and the deactivation of hydrogenation catalysts is delayed.

An integrated ammonia-process desulfurization method of various acidic gases in an oil refining device includes the following steps: (1) preparing heavy oil, light oil, acidic liquid and solvents through an atmospheric and vacuum distillation unit from crude oil, and feeding the heavy oil into a catalytic cracking device, the light oil into a hydrogenation device, and the acidic liquid and the solvents into a sulfur recovery combined device; (2) mixing a part of FCC oil, which is produced through the catalytic cracking device, with the light oil and feeding the mixed oil into the hydrogenation device to produce hydrogenated oil, the acidic liquid and solvents, wherein a part of the hydrogenated oil is fed into an adsorption device while the other part of the hydrogenated oil is stored and marketed as product oil; (3) feeding the acidic liquid and solvents and the acidic liquid and solvents prepared from the atmospheric and vacuum distillation unit into the sulfur recovery combined device to produce sulfur, and feeding the tail gas into an incineration unit for incineration to obtain incinerated flue gas; (4) feeding a part of the FCC oil which is produced in the catalytic cracking device into the adsorption device, performing adsorption desulfurization, and feeding an adsorption catalyst into a regenerative device to regenerate the adsorption catalyst in an oxidizing manner to obtain regenerated flue gas; and (5) feeding the FCC flue gas, the incinerated flue gas and the regenerated flue gas into an ammonia absorption device to perform absorption desulfurization and discharging cleaned flue gas after the flue gas meets standard.

The invention provides a method for catalytic conversion production of propylene and light aromatics, which is characterized in that a hydrocarbon raw material and a catalytic cracking catalyst are contacted in a composite reactor for reacting under the catalytic cracking condition, the reaction products and the to-be-regenerated catalyst are separated, the separated to-be-regenerated catalyst is circularly used through stripping and performing coke burn-off regeneration, the separated reaction products is fractionated to obtain low carbon olefin, gasoline containing light aromatics and the like, and separated to obtain the light aromatics further; the composite reactor comprises a riser reactor and a fluidized bed reactor, an outlet of the riser reactor is communicated with a lower part of the fluidized bed reactor, a stripper is positioned at the lower part of the fluidized bed reactor, an upper part of the stripper is communicated with the bottom of the fluidized bed reactor, and the outlet of the fluidized bed reactor is communicated with the inlet of a gas solid separation device in a settler though a conveying pathway, a catalyst outlet of the settler is communicated with the lower part of the fluidized bed reactor. According to the invention, propylene and light aromatics enable high yield by using the method.

An apparatus and process are provided for cracking hydrocarbonaceous feed, wherein the temperature of heated effluent directed to a vapor/liquid separator, e.g., flash drum, whose overhead is subsequently cracked, can be controlled within a range sufficient so the heated effluent is partially liquid, say, from about 260 to about 540° C. (500 to 1000° F.). This permits processing of a variety of feeds containing resid with greatly differing volatilities, e.g., atmospheric resid and crude at higher temperature and dirty liquid condensates, at lower temperatures. The temperature can be lowered as needed by: i) providing one or more additional downstream feed inlets to a convection section, ii) increasing the ratio of water/steam mixture added to the hydrocarbonaceous feed, iii) using a high pressure boiler feed water economizer to remove heat, iv) heating high pressure steam to remove heat, v) bypassing an intermediate portion of the convection section used, e.g., preheat rows of tube banks, and/or vi) reducing excess oxygen content of the flue gas providing convection heat.

The invention relates to a method and a device for preparing biomass fuel from biomass materials. The method comprises the following steps: loading biomass materials in a gas generating chamber, and carrying out pyrolysis to generate mixed gas; cracking the tar to generate a combustible gas; filtering off fly-ash and residual tar in the combustible gas; carrying out gas-water separation to separate water; and deodorizing to obtain the biomass fuel. The device comprises the gas generating chamber (2) fixed on a pedestal (1), a material storage chamber (3) fixed on the upper side of the gas generating chamber (2), a cracking catalyst absorber (4) fixed on the upper side of the material storage chamber (3), a gas-water separator (5) communicated with the cracking catalyst absorber (4), and a deodorizing and gas storage box (6) communicated with the gas-water separator (5). The device and the method have the advantages that the device and the method can effectively remove tar, fly-ash, vapor, odor, etc. in the biomass fuel without contaminating the environment and can ensure the combustion heat efficiency of the biomass fuel, etc.

The present invention discloses a catalytic cracking process of petroleum hydrocarbons and a tube-in-tube riser reactor used therein. In the present invention, a catalyst is fed via an inlet conduit to an inner tube and an annular space between the inner and outer tubes of the tube-in-tube riser reactor to contact a hydrocarbon feedstock, and the hydrocarbon feedstock is cracked under FCC conditions, then a reaction stream thus produced flows into a separation apparatus via a confluence tube to separate a hydrocarbon product stream from a spent catalyst, the spent catalyst is stripped and regenerated, then a regenerated catalyst is recycled for reuse. The process of the present invention can improve both product distribution and product properties.

The invention discloses a method of combination and regeneration of waste high molecular materials or co-production of the waste high molecular materials and carbon black, and a device thereof, relating to two technologies of existing thermal cracking and non-thermal cracking of the waste high molecular materials and improvement and combination among various technological branches and also relating to the regeneration process of the waste high molecular materials and the combination of the regeneration process of the waste high molecular materials and the production process of general carbon black and an integration device used in the embodiment thereof; and comminution at normal temperature or the combination of the comminution at normal temperature and various branches of renovated rubber technology and an integration device adopted by the embodiment thereof are also included. The method also provides a treatment proposal for applying mixed fiber to recycling and products thereof, which are characterized in that the mixed fiber and plasticized rubber materials or/and oil materials are matched by the weight percentage of 100:5 to 100:100 to obtain a mixture taking the shape of a felt or a rubber felt or a treated felt. The proposal of the integration device also provides a combination device with fractional efficiency higher than that of the existing fractional process for the granularity of rubber powder only by means of a power screen.

The invention relates to a catalyst used for hydrogenation ring opening of polycyclic aromatic hydrocarbon and advanced hydrogenation dearomatization and isomeric pour point depression of diesel oil, and a preparation method thereof. The catalyst is formed by using modified H-Beta molecular sieve with a high silica-alumina ratio and an inorganic oxide as a carrier, and precious metal Pt, Pd or Ir as an active component. The catalyst has a high metal dispersion ability, and has suitable acid kind, acid strength and pore structure. The catalyst can inhibit advanced cracking, and promotes the selective ring opening of aromatic hydrocarbon and product isomerization. The catalyst is suitable for advanced hydrogenation saturation of diesel oil with low sulfur and nitrogen content, selective ring opening and isomerization, can reduce the aromatic hydrocarbon content in the diesel oil, can improve the cetane number of oil products, and can reduce the condensation point of the diesel oil.

The invention provides a nanometer zero-valent iron-biochar composite material, and a preparation method and application thereof. According to the invention, a carrier is a series of biochar with different cracking temperatures; the biochar is cheap and easily-available, has large specific surface area and contains a plurality of mineral components; nanometer zero-valent iron particles carried bythe carrier have strong activity; thus, the nanometer zero-valent iron particles have high activity; and the nanometer zero-valent iron-biochar composite material prepared from the carrier has high activity, and has the advantages of stable properties and low price at the same time. Screening of the series of different cracking temperatures shows that the composite material formed by the biochar generated by cracking of straw at medium and high temperatures and the nanometer zero-valent iron has strong removal effect on heavy metals. Meanwhile, the nanometer zero-valent iron-biochar compositematerial provided by the invention has excellent adsorption performance of the biochar and strong reduction capacity of the nanometer iron, and can provide theoretical basis and technical support forprevention, control and remediation of heavy metal pollution to groundwater.

The invention relates to a deep processing method for shale oil, which comprises the following steps: placing shale oil, catalytic cracking light cycle oil and catalytic cracking heavy cycle oil into a shale oil hydrotreatment apparatus; placing the obtained hydrogenation generation oil and optional vacuum gas oil in a catalytic cracking apparatus, separating the reacted product to obtain ethane-containing dry gas, propylene and butylene-containing liquefied gas, monocyclic aromatics-rich catalytic cracking gasoline, catalytic cracking light cycle stock oil, catalytic cracking heavy cycle oil and catalytic cracking oil slurry; circulating catalytic cracking light cycle stock oil and catalytic cracking heavy cycle oil to the shale oil hydrotreatment apparatus. The deep processing method of shale oil is used for high value substances like ethane, propylene, butylene, benzene, toluene, xylene and the like, so that added value of the product can be greatly increased.

The invention relates to a novel mesoporous-microporous NaY zeolite and a synthetic method thereof. The method comprises a step that the mesoporous-microporous NaY zeolite is obtained by in-situ synthesis through introducing a template which is a silane modified polymer in the Y zeolite synthesis process, and has the advantages of short synthetic period and easily controlled operation conditions. The novel mesoporous-microporous NaY zeolite has a good hydrothermal stability, and has wide application prospects in the fields of petroleum catalytic cracking, hydrocracking and the like.

There is provided a coated zeolite catalyst in which the accessibility of the acid sites on the external surfaces of the zeolite is controlled and a process for converting hydrocarbons utilizing the coated zeolite catalyst. The zeolite catalyst comprises core crystals of a first zeolite and a discontinuous layer of smaller size second crystals of a second zeolite which cover at least a portion of the external surface of the first crystals The coated zeolite catalyst finds particular application in hydrocarbon conversion processes where catalyst activity in combination with zeolite structure are important for reaction selectivity, e.g., catalytic cracking, alkylation, disproportional of toluene, isomerization, and transalkylation reactions.

The invention relates to a preparation method of aluminium phosphate sol used for a petroleum hydrocarbon cracking catalyst, which is characterized by comprising the steps of: mashing and dispersing an acid soluble aluminum precursor and decationed water into serous liquid with solid content of 15-35 percent, slowly adding phosphoric acid with concentration of 60-98 percent into the serous liquidunder the stirring according to the weight proportion of P/Al=1.0-2.5; then adding hydrogen nitrate with concentration of 40-98 percent according to the weight proportion of HNO3/Al2O3=0.2-2.0, rapidly reacting and releasing a large quantity of heat; and generating colorless transparent thick liquid after the reaction. The microactivity of the catalytic cracking catalyst prepared by adopting the aluminium phosphate sol bonder provided by the invention is remarkably improved. The selectivity of the aluminium phosphate sol is improved, the yields of gas and coke are remarkably reduced, and the yields of light oil and propylene are improved.

The invention discloses method and device for modifying low-quality heavy oil. According to a catalytic cracking device, a fluidization low-quality heavy oil modifying process is formed by arranging a low-quality heavy oil modifying reactor and using a carbon deposit to-be-generated catalyst as a heat carrier. The to-be-generated catalyst from a catalytic cracking lifting pipe reactor is mixed with a regenerated catalyst from a regenerator to be used as the heat carrier entering the low-quality heavy oil modifying reactor for reacting with low-quality fed materials to generate an oil gas, the oil gas enters a fractionating column, and the separated catalyst enters the regenerator for regeneration for circulating. The device comprises a catalytic cracking lifting pipe reactor (1), a to-be-generated catalyst conveying pipe (5), a catalyst mixer (9), a low-quality heavy oil modifying reactor and a regenerator (6). Under the premise of no influence on the distribution and the quality of catalytic cracking products, the invention achieves the purpose of a low-quality heavy oil fluidization heat modification process, and is suitable for secondary processing on the low-quality heavy oil raw material with low content of heavy metals (Ni+V).