113results about "Hydrocarbon oil cracking" patented technology

The present invention relates to a process for the hydroconversion of a heavy hydrocarbon feedstock implementing at least one entrained bed reactor in the presence of a solid catalyst entrained in the form of single-sheet molybdenum disulfide (MoS2) nanoparticles, obtained according to an ex-situ preparation process from an organosoluble precursor comprising at least one molybdenum-sulfur bond.

Disclosed herein are methods and systems for producing hydrocarbon products through reactor platforms utilizing a catalyst suspended in the reacting fluids, where the feedstock to the reactor may be a renewable feedstock, circular feedstock, and / or a blend of renewable and circular feedstocks. The disclosed methods and processes include a recycle pump system within the ebullated bed reactor vessel. This internal recycle dilutes olefins, thereby mitigating explosive olefin hydrogenation without limiting the flow of fresh feedstock to the ebullated bed reactor. The disclosed methods and processes include catalyst recovery systems for recovering the suspended catalyst and returning it to the reactor feed.

The application discloses a method for switching raw material on line in a hydrocracking device. The method comprises the following steps: (1) reducing the average temperature of each catalyst bed in the stably running wax oil hydrocracking device to 90-230 DEG C, and switching the feed to high-gum wax oil; (2) when the mass content of gum in the reaction effluent of the hydrocracking device is greater than 0.1%, adjusting the reaction conditions of each catalyst bed in the hydrocracking device, and performing carbon deposition treatment on the hydrocracking catalysts of each catalyst bed; (3) after the carbon deposition treatment is completed, switching the feed to Fischer-Tropsch synthetic oil, and entering the Fischer-Tropsch synthetic oil hydrocracking reaction to obtain diesel product. The method can realize the on-line switching of the current raw material wax oil in the hydrocracking device to Fischer-Tropsch synthetic oil, and enables the Fischer-Tropsch synthetic oil hydrocracking to obtain diesel product with high isohydrocarbon content and high yield.

A composition is provided that includes a hierarchical ordered crystalline microporous material having a cubic-symmetric defined long-range mesoporous order. The composition possesses mesopores having the walls of the crystalline microporous material and a group of mesostructures between the mesopores of the crystalline microporous material. The long-range order is defined by the presence of secondary peaks in the X-ray diffraction (XRD) pattern and / or cubic symmetry observable by microscopy.

The present invention relates to a method for producing an intermediate fraction and naphtha from a mixed raw material containing a heavy fraction of fossil hydrocarbons, wherein at least 50% by weight of the heavy fraction is a pyrolysis oil fraction of plastics and / or tires and / or recovered solid fuels, the initial boiling point of the compound being greater than 300°C and the final boiling point being less than 700°C, and less than 50% by weight is an aromatic compound content of more than 30% by weight, and the method comprises the following steps: a) a step of hydrogenating the mixed raw material to obtain a hydrogenated effluent; b) a step of hydrocracking the hydrogenated effluent to obtain a hydrocracking effluent; c) a step of separating the hydrocracking effluent to produce at least one gaseous effluent and at least one liquid effluent containing hydrogen; d) a fractional distillation step to produce a naphtha fraction and an intermediate distillate fraction.

The invention provides a hydrocracking catalyst carrier and a preparation method thereof, and the preparation method comprises the following steps: step 1, mixing a KIT-6 molecular sieve, a rare earth-containing compound, a titanium-containing compound, a hydrogenation active metal precursor, a first template agent and water, crystallizing, and roasting to obtain a composite material; step 2, mixing the composite material, a Y molecular sieve guiding agent, an aluminum source, an alkali source, a silicon source and water, crystallizing and roasting to obtain a micro-mesoporous molecular sieve composite material; and 3, mixing the micro-mesoporous molecular sieve composite material with a binder, molding, and roasting to obtain the hydrocracking catalyst carrier. The catalyst prepared by the hydrocracking catalyst carrier is appropriate in acidity, has good inferior distillate oil selective hydrocracking performance, can realize high yield of chemical raw materials, and has high product yield.

This invention discloses a hydrocracking catalyst, comprising a support and an active metal, wherein the support comprises SAPO-34 molecular sieve, and the SAPO-34 molecular sieve has a specific surface area of ​​400-550 m². 2 / g, pore volume 0.38-0.45cm³ 3 / g. This invention also discloses its preparation and application. The SAPO-34 molecular sieve contained in this invention has a higher specific surface area and pore volume, making it more suitable for the diffusion and reaction of macromolecules in the hydrocracking of wax oil, and inhibiting carbon deposition.

An improved process for making a bright stock base oil from a base oil feedstream comprising an atmospheric resid feedstock, and, optionally, a base oil feedstock, via hydroprocessing. The process generally involves subjecting a base oil feedstream comprising the atmospheric resid to hydrocracking and dewaxing steps, and optionally to hydrofinishing, to produce base oil product(s) including a bright stock grade base oil product having a viscosity of at least about 22 cSt at 100° C. The invention is useful to make heavy grade base oil products such as bright stock, as well as Group II and / or Group III / III+ base oils.

Provided is a process for processing circular feedstocks, renewable feedstocks, or a mix of both renewable and circular feedstocks in an ebullated bed (EB) reactor. At least a portion of the renewable and / or circular feedstocks is added to the EB reactor above its catalyst grid, while a sufficient amount of the feedstocks is injected at the bottom of the EB reactor to create the fluidized bed.

This invention discloses a highly active oil-soluble molybdenum-based catalyst, its preparation method, and its application in the catalytic hydrocracking and upgrading of heavy and inferior oils, belonging to the field of chemical catalyst technology. The highly active oil-soluble molybdenum-based catalyst is prepared by the following method: a long-chain fatty acid ester is mixed with a polyol amine, then an alkaline ionic liquid is added, and the reaction is stirred under a nitrogen atmosphere; after the reaction is complete, the mixture is allowed to stand and separate into layers, and the upper layer of reaction product is taken to obtain a polyol amine ester; the polyol amine ester is mixed with a molybdenum source, and the reaction is stirred under a nitrogen atmosphere to obtain the highly active oil-soluble molybdenum-based catalyst. The oil-soluble molybdenum-based catalyst has good oil solubility, can dissolve and disperse in feedstock oil, and has high activity, capable of decomposing at low temperatures to generate an active phase. It exhibits excellent hydrogenation catalytic activity in the slurry-bed hydrogenation process of heavy and inferior oils, thus demonstrating good application prospects and value in the field of chemical catalysis technology.

The present application relates to the technical field of petroleum chemical catalyst, in particular to a hydrogenation shape selective cracking catalyst and its application method.The hydrogenation shape selective cracking catalyst comprises a carrier and an active metal component, the carrier comprises SAPO-11 molecular sieve, ZSM-23 molecular sieve and low-sodium small-pore pseudo-boehmite powder, and the active metal component comprises palladium, nickel, lanthanum and cerium;the content of SAPO-11 molecular sieve is 40-50 wt%, the content of ZSM-23 molecular sieve is 7-8.5 wt%, the content of palladium is 0.2-1.5 wt%, the content of nickel is 0.5-5.5 wt%, the content of cerium is 0.6-4%, the content of lanthanum is 2-7%, and the rest is low-sodium small-pore pseudo-boehmite powder, based on the total weight of the catalyst.The present application can produce transformer oil with a pour point less than-50 DEG C and high-quality bright oil products with a viscosity index greater than 110 and being transparent and free of flocculation at 15 DEG C.

A pyrolysis method and system are provided that may utilize a recycled plastic feedstock that comprises various types of waste plastics or a feedstock that comprises various types of waste plastics and at least one crude post-industrial liquid waste. The disclosed pyrolysis method and system may be configured to convert various types of waste plastics, including post-customer and post-industrial wastes, and / or crude post-industrial liquid wastes into useful pyrolysis oils.

The application discloses a method for preparing high-quality cracking material, which comprises the following steps: contacting C5 alkanes and hydrogen with a catalyst in a reactor, and reacting to obtain high-quality cracking material; the C5 alkanes are at least one selected from normal pentane and isopentane; the high-quality cracking material is at least one selected from ethane, propane, normal butane and normal pentane; the catalyst is composed of an acidic carrier and a noble metal active element and an auxiliary element supported on the surface of the acidic carrier; the noble metal active element is at least one selected from palladium and platinum; the auxiliary element is at least one selected from potassium and iron; in the catalyst, the mass ratio of the noble metal active element to the acidic carrier is 0.0001-0.005:1, and the mass ratio of the auxiliary element to the acidic carrier is 0.002-0.05:1.

A process includes receiving, in a heavy oil hydrotreating unit, a solid-free lean stream containing unconverted oil processed from a heavy oil feedstock in a slurry hydroconversion reactor, hydrotreating the solid-free lean stream containing the unconverted oil in the presence of hydrogen and a hydrotreating catalyst in the heavy oil hydrotreating unit under heavy oil hydrotreating conditions, thereby producing a hydrotreated effluent, and recycling at least a portion of the hydrotreated effluent to the slurry hydroconversion reactor.

This invention discloses a two-stage method and system for upgrading heavy oil in the presence of methane, belonging to the field of heavy oil processing and clean utilization technology. The method includes a pretreatment stage and an upgrading stage: the heavy oil feedstock is introduced into a first reactor and pretreated in a methane or methane / hydrogen mixed atmosphere with a first catalyst to obtain intermediate oil; the intermediate oil is then directly introduced into a second reactor and upgraded in a methane atmosphere with a second catalyst. Oxygen is introduced during the reaction for in-situ heating to promote methane activation and enhance the upgrading effect of heavy oil. This invention, through the functional division of the two-stage reaction and the combination of in-situ heating, reduces the impact of heavy oil metallic impurities and asphaltenes on the upgrading reaction, improves the problem of simultaneous methane activation and catalyst poisoning in single-stage methane-containing systems, facilitates methane participation in oil upgrading, improves the desulfurization, denitrification, demetallization, and viscosity reduction effects of heavy oil, and reduces the amount of external hydrogen used.

The present invention relates to a process for hydroconversion in a hybrid bubbling-entrained bed of a heavy hydrocarbon feedstock in the presence of a hydroconversion catalyst in the form of single-layer nanoparticles of molybdenum disulfide (MoS2) obtained according to an ex-situ preparation process from an organosoluble precursor comprising a molybdenum-sulfur bond.

The application discloses a combined hydrogenation catalyst for high-aromatic diesel hydro-upgrading and application thereof. The combined hydrogenation catalyst is prepared by grading and filling two catalysts, namely, a hydrocracking catalyst and a hydroisomerization catalyst, and the hydrocracking catalyst and the hydroisomerization catalyst are sequentially filled along a flow direction; wherein the hydroisomerization catalyst is a hydroisomerization catalyst containing HZSM-22 molecular sieve. In the application, the combination of the two catalysts is used in a hydrocracking-hydroisomerization reaction system, and the quality of catalytic diesel oil with high aromatic content can be remarkably improved in the high-aromatic diesel hydro-upgrading reaction.

The present invention relates to a reactor with an arrangement of at least two successive reactor layers comprising layers of bi-functional catalysts and mono-functional catalysts for improving the cold flow properties of higher hydrocarbon fractions, and to a process for the hydroconversion of a reaction fluid comprising a middle distillate fraction with a Watson K-factor > 11.8 in the presence of sulfur-containing organic compounds and / or nitrogen-containing organic compounds.

The application discloses a Beta / ZSM-5 symbiotic zeolite molecular sieve, a hydrocracking catalyst and a preparation method and application thereof. The Beta / ZSM-5 symbiotic zeolite molecular sieve has the topological structures of BEA and MFI, wherein the particle size of the particle with the topological structure of BEA is 50-500 nm, and the particle size of the particle with the topological structure of MFI is 3-6 mu m; preferably, the molar ratio of the silicon-aluminum oxide molecular substance of the Beta / ZSM-5 symbiotic zeolite molecular sieve is 25-300, preferably 50-200. The hydrocracking catalyst is applied to a catalytic diesel hydrocracking reaction, and the yield of light aromatic hydrocarbons and benzene in the reaction product can be effectively improved.

A system for controlling a steam cracking furnace may include a controller configured to control an electric heater to pre-heat a combustion air feed to a radiation section of the cracking furnace, and one or more sensors configured to sense properties of a recovered pure hydrogen stream fed to the radiation section of the cracking furnace as fuel. The controller can be configured to receive the sensed properties from the one or more sensors and control the electric heater based on the one or more sensed properties.

To provide a method which efficiently produces a chemical product and also efficiently provides a carbide from used tires by improvement of each step in a set of processes. A method for producing a chemical product and a carbide, the method including a pyrolysis step of obtaining a first gas fraction, pyrolysis oil, and a residue fraction through pyrolysis of a crushed product of used tires, a carbide recovery step of recovering carbide from the residue fraction, a low-temperature hydrogenation step of subjecting raw oil containing at least one portion of the pyrolysis oil to low-temperature hydrotreatment at 180°C or higher and 350°C or lower, to obtain low-temperature hydrogenated oil, a hydrogenolysis step of subjecting raw oil containing at least one portion of the low-temperature hydrogenated oil to hydrogenolysis treatment at a higher temperature than that in the low-temperature hydrotreatment, to obtain a second gas fraction, a light fraction having a boiling point of 350°C or lower, and a heavy fraction having a boiling point of higher than 350°C, and a steam cracking step of obtaining a chemical product, and a raw material for carbide production, containing a heavy distillate fraction having a 10% distillation temperature of 190°C or higher, by steam cracking of steam cracking raw oil containing at least one portion of the light fraction, in which a pyrolysis temperature of the pyrolysis is 350°C or higher and 750°C or lower.

The application relates to the technical field of petroleum chemical industry, and discloses an organic molybdenum salt, a preparation method and application thereof, the preparation method comprising the following steps: (1) preheating treatment is conducted on a hexavalent molybdenum source compound and an alkaline substance in the presence of a solvent to obtain a mixture I with a temperature of 50-100 DEG C; preheating treatment is conducted on a ligand raw material to obtain a mixture II with a temperature of 50-100 DEG C; (2) the mixture I is added dropwise into the mixture II to conduct a mixing reaction, and a mixture III is obtained; (3) the mixture III is subjected to a reduction reaction to obtain the organic molybdenum salt. The preparation method provided by the application can obtain the organic molybdenum salt with high metal content, good oil solubility and excellent anti-coking performance, so that the residue oil hydrogenation process is improved; and the organic molybdenum salt can be applied in a poor heavy oil hydrocracking reaction.

METHOD FOR MANUFACTURING HYDROCARBON FLUIDS WITH AT LEAST PART-INTEGRATED DIHYDROGEN PRODUCTION The invention relates to a method for manufacturing hydrocarbon fluids, in particular paraffins, from a hydrocarbon feedstock of natural origin containing at least 50% by mass of glycerides, said method comprising: a) a step of hydrolysis of the hydrocarbon feedstock of natural origin, b) a step of recovery of the products of step a) separating a first effluent containing free fatty acids and a second effluent containing alcohols and water, c) a step of hydrotreating said first effluent to transform the free fatty acids into paraffins, e) a step of reforming in aqueous phase the second effluent recovered in step b) during which at least a part of the alcohols it contains is converted into dihydrogen, carbon dioxide and carbon monoxide, f) a step of separation of the dihydrogen formed during step e),The separated dihydrogen is sent to step c) hydrotreatment, and optionally to a step d) hydroisomerization and / or hydrocracking of the hydrotreated effluent. Abbreviated figure: Figure 1.

This invention discloses a process flow for water injection in a hydrogenation unit. It uses condensate from high-pressure (4.0–3.5 MPa) or medium-pressure steam (1.0–2.0 MPa) as the injection water, continuously injected before the amine salt crystallization temperature along with the reaction effluent or before the high-pressure gas heat exchanger, eliminating the need for a continuous water injection point before the air cooler. Compared with existing technologies, this method offers the following advantages: it minimizes the impact of water injection on the heat exchange of the high-pressure medium, maximizing heat recovery; it avoids the risk of intermittent water injection before conventional heat exchangers; it saves on water injection pipelines and valves before the high-pressure air cooler; and it incidentally recovers the heat from the high-temperature condensate, reducing overall plant energy consumption.