40results about "Treatment with moving solid particles" patented technology

The invention relates to the technical field of reactors, and discloses a uniform gas-liquid distribution suspended bed reactor for heavy oil hydrogenation, which comprises a reactor shell, a gas-liquid distribution disc is horizontally arranged at the lower end of an inner cavity of the reactor shell, a Venturi annular gas-liquid diffuser is arranged on the gas-liquid distribution disc, and a pre-distribution chamber is formed at the bottom of the gas-liquid distribution disc; the Venturi annular gas-liquid diffuser comprises an outer gas guide pipe arranged on the gas-liquid distribution disc in a penetrating mode. According to the Venturi annular gas-liquid diffuser, through the synergistic effect of a liquid-phase flow annular nozzle and a gas-phase flow annular nozzle, a liquid phase sprayed out at a high speed is actively sheared and broken relative to a low-speed gas phase, and uniform small bubble groups can be generated, so that the gas-liquid contact area is greatly increased; the dissolution rate and the mass transfer efficiency of the hydrogen into the heavy oil are remarkably improved, so that the hydrogenation reaction depth and the product quality are directly improved, and meanwhile, the catalyst in a catalyst suspended bed reaction zone is effectively protected.

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 ebullated bed reactor platforms, where the feedstock to the ebullated bed reactor for hydrotreatment 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.

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 invention discloses a process method for selective deep desulfurization and denitrification of aromatic-rich fractions. The process method comprises the following steps: (1) mixing aromatic-rich diesel oil with hydrogen, and then feeding the mixture into a pre-hydrogenation reaction zone I for pre-hydrogenation dealkene reaction; (2) a product obtained in the step (1) enters a hydrofining reaction zone II for a hydrofining desulfurization and denitrification reaction; (3) carrying out flash evaporation on the product obtained in the step (2) to separate recycle hydrogen, enabling the obtained refined diesel oil to enter a moving bed adsorption denitrification reaction zone III, and carrying out deep adsorption denitrification reaction on the refined diesel oil under the action of an adsorption denitrification agent to obtain a desulfurized and denitrified refined aromatic-rich diesel oil component; and (4) enabling the inactivated adsorption denitrification agent in the step (3) to enter an adsorbent regeneration area IV, and completing reduction and drying of the inactivated adsorption denitrification agent under the action of a desorption agent to obtain the cyclically regenerated adsorption denitrification agent. According to the process method, deep removal of the sulfur-containing nitrogen-containing compound can be realized, and the investment cost is also greatly reduced.

The invention relates to an integrated method for thermal conversion and indirect combustion of a heavy hydrocarbon feedstock in a redox chemical loop for producing hydrocarbon streams. The heavy hydrocarbon feedstock (1) is brought into contact with inert particles (2) in a thermal conversion zone (100). Thermal conversion in the absence of hydrogen, water vapour and a catalyst produces a first gaseous effluent of hydrocarbon compounds (4) and coke, which effluent is deposited on the inert particles (5). The latter is then burned in a redox chemical loop (200) in the presence of oxygen-carrying solid particles (6). The inert particles thus flow between the thermal conversion zone (100) and a reduction zone (300) of the chemical loop while the oxygen-carrying solid particles flow between the oxidation (400) and reduction zones (300) of the chemical loop.

An improved MFI zeolite having low aluminum occupation at intersection sites characterized by an ortho-xylene to para-xylene uptake ratio of 0.1 to 0.55. Processes for converting hydrocarbon or oxygenate to a product comprising light olefins and / or aromatics using the improved MFI zeolite as catalyst are also disclosed. Para-xylene in the product may be greater than 24% of the xylenes.

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.

This invention discloses a hydrogenation process and system for animal and vegetable oils. The process includes the following steps: 1) Animal and vegetable oil raw materials are mixed with hydrogen and then fed into a fluidized bed hydrogenation reactor for reaction. The reaction effluent is separated to obtain gaseous and liquid phase effluents; 2) The liquid phase effluent obtained in step 1) is processed in a purification unit to obtain purified oil; 3) The purified oil obtained in step 2) is fed into a hydrorefining reactor for hydrorefining reaction. The reaction effluent is fractionated to obtain jet fuel and biodiesel. The hydrogenation process provided by this invention, combined with the characteristics of hydrogenation of animal and vegetable oils, offers a highly efficient technical route for the hydrogenation of animal and vegetable oils to produce biodiesel.

The utility model relates to a boiling bed residual oil hydrocracking fractionation recovery light dirty oil system. The system comprises an acidic water extraction device unit, a tank field unit, a residual oil hydrocracking device unit and a light dirty oil recycling process, the acidic water extraction device unit comprises an acidic water extraction device sump oil tank and a sump oil tank extraction pump; an acidic water extraction device slop oil tank in the acidic water extraction device unit is connected to the tank area unit through an extraction line connected to a slop oil tank extraction pump; the tank field unit is connected to an atmospheric and vacuum distillation unit through a pipeline, and the pipeline connected with the atmospheric and vacuum distillation unit is connected to the residual oil hydrocracking unit through a feed line of the residual oil hydrocracking unit; the light dirty oil recycling process is led out from an extraction line of an extraction pump of a dirty oil tank, is merged into the tank area unit and is connected to the residual oil hydrocracking device unit; the light dirty oil which is originally reprocessed by an atmospheric and vacuum distillation unit is directly introduced into a fractionation atmospheric tower of a residual oil hydrocracking unit through a light dirty oil reprocessing line, so that the reprocessing flow is reduced; and the recycling process is more energy-saving and environment-friendly.

The present application relates to a preparation method of isotropic pitch for coating and spinning, which uses ethylene tar, catalytic cracking slurry, medium-low temperature coal tar, bio-tar and other aromatic-rich heavy oil as raw material, carries out hydrogenation stabilization and isomerization modification on the raw material by adopting ebullated bed reaction form, obtains pre-polymerized pitch under the induced polymerization of oxygen-containing linear polymer in the ebullated bed hydrogenation tail oil, carries out oxidation cross-linking reaction under the action of plasma radiation, further improves the softening point and carbon residue value of the obtained isotropic pitch product, and inhibits the generation of mesophase optical structure, and the molecular weight distribution of the isotropic pitch product is relatively concentrated, which exhibits excellent coating performance and homogeneous melting and spinning performance.

The present application belongs to the technical field of heavy oil hydrogenation reaction equipment, and particularly provides a gas nozzle for a heavy oil slurry bed hydrogenation reactor, which comprises a nozzle body, the nozzle body comprises a gas inlet pipe section, a gas outlet pipe section and a flow guide core, the flow guide core comprises a center column and a baffle, the bottom end of the center column is arranged in the gas outlet pipe section, the top end extends to the outside of the gas outlet pipe section, the baffle is located above the gas outlet pipe section and is connected with the top end of the center column in a manner perpendicular to the axis of the gas outlet pipe section, and the gas flow will be blocked by the baffle when flowing out of the gas inlet pipe section and the gas outlet pipe section, so as to improve the jet direction and diffusion form of the gas flow; the gas nozzle retains the characteristics of the original small-size nozzle, and converts the traditional "high-speed narrow flow" into "high-speed wide flow" by additionally arranging the flow guide core with the baffle, so as to achieve the dual purposes of uniform distribution of hydrogen in heavy oil and resistance to coking of heavy oil at the nozzle outlet, and solve the existing problems.

The present invention is a hydroconversion process of a heavy hydrocarbon feed employing at least one entrained bed reactor in the presence of a solid entrained catalyst in the form of bimetallic sulfide MMoS nanoparticles in single sheets, M being a group VIIIB metal such as nickel or cobalt, obtained by an ex-situ preparation process from organosoluble precursors containing metal-sulfur bonds.

The invention belongs to the technical field of heavy oil hydrogenation reaction equipment, and particularly provides a gas nozzle for a heavy oil slurry bed hydrogenation reactor, which comprises a nozzle body, the nozzle body comprises a gas inlet pipe section, a gas outlet pipe section and a flow guide core, the flow guide core comprises a central column and a baffle, the bottom end of the central column is arranged in the gas outlet pipe section, and the baffle is arranged in the gas inlet pipe section. The top end of the baffle extends out of the air outlet pipe section, the baffle is located above the air outlet pipe section and connected with the top end of the central column in the mode of being perpendicular to the axis of the air outlet pipe section, and air flow is blocked by the baffle when flowing out through the air inlet pipe section and the air outlet pipe section so as to improve the air flow injection direction and diffusion form; according to the gas nozzle, the characteristics of an original small-size nozzle are reserved, meanwhile, the flow guide core with the baffle is additionally arranged, traditional high-speed narrow flow is converted into high-speed wide flow, the dual purposes that hydrogen is evenly distributed in heavy oil and the heavy oil is prevented from being coked at an outlet of the nozzle are achieved, and the defects existing in the prior art are overcome.

The present invention relates to a process for hydroconversion of a feedstock comprising a plastic fraction (102), in particular derived from plastic waste, and a heavy hydrocarbon fraction (101) containing a portion of at least 50% by weight, or even at least 80% by weight, having a boiling point of at least 300°C. The hydroconversion uses one or more ebullated bed or hybrid ebullated-entrained bed reactors (20) operating in the presence of hydrogen and H2S, and preferably two successive hydroconversion steps, in order to produce materials of higher quality, with a lower boiling point, for example for the production of fuels, while enabling plastic waste to be upgraded. H2S is used to improve the conversion of the plastic fraction of the feedstock, and is contained in a recycled hydrogen stream resulting from the process, wherein the content of H2S is between 2% and 70% by weight relative to the plastic fraction of the feedstock.

The present invention relates to a process for the hydroconversion of a heavy hydrocarbon feedstock using at least one entrained bed reactor in the presence of an entrained solid catalyst in the form of monolayer bimetallic sulfide MMoS nanoparticles, M being a Group VIIIB metal such as nickel or cobalt, obtained from organosoluble precursors with metal-sulfur bonds using an ex-situ preparation process.

This invention relates to the field of reactor technology and discloses a uniform gas-liquid distribution suspended bed reactor for heavy oil hydrogenation, comprising a reactor shell; a gas-liquid distribution plate is horizontally arranged at the lower end of the inner cavity of the reactor shell, and a Venturi annular gas-liquid diffuser is arranged on the gas-liquid distribution plate, with a pre-distribution chamber formed at the bottom of the gas-liquid distribution plate; the Venturi annular gas-liquid diffuser includes an external gas conduit that penetrates the gas-liquid distribution plate. The Venturi annular gas-liquid diffuser of this invention, through the synergistic action of the liquid phase flow annular nozzle and the gas phase flow annular nozzle, enables the high-speed ejected liquid phase to actively shear and break up the low-speed gas phase, generating a uniform cluster of small bubbles. This greatly increases the gas-liquid contact area, significantly improves the dissolution rate and mass transfer efficiency of hydrogen into heavy oil, thereby directly improving the hydrogenation reaction depth and product quality, while also effectively protecting the catalyst in the catalyst suspended bed reaction zone.

A method for the desulfurization and separation of a catalytic cracking light product includes the steps of: 1) contacting a catalytic cracking light product with a desulfurization adsorbent in an adsorption desulfurization reaction unit in the presence of hydrogen for desulfurization, and optionally carrying out gas-liquid separation on the resulting desulfurization product, to obtain a desulfurized rich gas and a desulfurized crude gasoline, wherein the catalytic cracking light product is an overhead oil-gas fraction from a catalytic cracking fractionator, or a rich gas and a crude gasoline from a catalytic cracking fractionator; and 2) separately sending the desulfurized rich gas and the desulfurized crude gasoline obtained in the step 1) to a catalytic cracking absorption stabilization system for separation, to obtain a desulfurized dry gas, a desulfurized liquefied gas and a desulfurized stabilized gasoline.

The present invention relates to a process for preparing a hydroconversion catalyst in the form of monolayer bimetallic sulfide MMoS nanoparticles, M being a group VIIIB metal such as nickel or cobalt, from organosoluble precursors comprising metal-sulfur bonds. The present invention also relates to a process for hydroconversion of a heavy hydrocarbon feedstock using at least one ebullated-entrained hybrid bed reactor in the presence of entrained solid catalyst(s) prepared according to the process.

The invention relates to a process for the hydroconversion of a feedstock comprising a plastic fraction (102), in particular derived from plastic waste, and a heavy hydrocarbon fraction (101) containing at least 50% by weight or even at least 80% by weight of a fraction having a boiling point of at least 300 DEG C. The hydroconversion uses one or more ebullated beds or hybrid ebullated-entrained bed reactors (20), operated in the presence of hydrogen and H2S, and preferably two successive hydroconversion steps, to produce higher quality, lower boiling materials, such as for producing fuels, while being able to upgrade the plastic waste. H2S is used to improve the conversion of the plastic fraction in the feedstock, and it is contained in a recycle hydrogen stream obtained from the process wherein the content of H2S is from 2 wt% to 70 wt% relative to the plastic fraction of the feedstock.

The present invention relates to a process for hydroconversion of a feedstock comprising a plastic fraction containing at least 70% by weight of PE in the high density and / or low density form (102), in particular derived from plastic waste, and a non-asphaltene heavy hydrocarbon fraction (101) containing a portion of at least 90% by weight having a boiling point of at least 300°C, for example of VGO or DAO type. The hydroconversion uses one or more ebullated bed or hybrid ebullated-entrained bed reactors (20), and preferably two successive hydroconversion steps, with a view to producing materials of higher quality, with a lower boiling point, for example for the production of fuels, while enabling plastic waste to be upgraded.

The specification discloses a highly macroporous catalyst for hydroprocessing and hydroconversion of heavy hydrocarbon feedstocks. The high macroporosity catalyst incudes an inorganic oxide, molybdenum, and nickel components. It has a pore structure such that at least 18% of its total pore volume is in pores of a diameter greater than 5,000 angstroms and at least 25% of its total pore volume is in pores of a diameter greater than 1,000 angstroms. Preferably, the pore structure is bimodal. The catalyst is made by co-mulling the catalytic components with a high molecular weight polyacrylamide followed by forming the co-mulled mixture into a particle or an extrudate. The particle or extrudate is dried and calcined under controlled calcination temperature conditions to yield a calcined particle or extrudate of the high macroporosity catalyst composition.

The invention provides a preparation method of a co-metal doped molybdenum disulfide catalyst precursor, which can be applied to the technical field of inferior oil hydrogenation. The preparation method comprises the following steps: S1, preparing a dilute acid solution with the pH value of 1.0-6.0; s2, adding a molybdenum source, a sulfur source and auxiliary metal salt into the dilute acid solution obtained in the step S1, and stirring and mixing at normal temperature to form a uniform active component solution; s3, adding a carrier into the uniform active component solution obtained in the step S2, and continuously stirring and mixing at normal temperature, so that the active component is fully loaded on the carrier to obtain a solid-liquid mixture; s4, carrying out solid-liquid separation on the solid-liquid mixture obtained in the step S3, and collecting a solid product; and S5, drying the solid product obtained in the step S4 at 40-70 DEG C to obtain the supported single-layer molybdenum disulfide catalyst precursor doped with the co-metal. The invention also provides the molybdenum disulfide catalyst precursor doped with the co-metal and application thereof.

The present invention relates to a three-phase reactor for the reaction of a hydrocarbon feedstock with hydrogen and a hydroconversion process, for example of the H-Oil™ type, implementing it, comprising a vessel (10) with an upper end (48) and a gas / liquid separation device comprising: - a recycle cup (30), above the catalytic reaction zone and delimiting with the upper end (48) a recycle zone (39), comprising a cylindrical upper part (42) extended by a lower part of decreasing cross-section and variable angle of inclination (43), provided with vertical conduits (27) for the passage of a gas / liquid mixture from a catalytic reaction zone, and having a fixed angle of inclination β between 50° and 85° with respect to the axis (Z) of the cylindrical part (42), - a recycle line (25) for the liquid at the apex of the lower part,in fluidic communication with the lower end of the enclosure by means of recirculation. Figure 2 to be published.

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

The invention relates to an integrated method for thermal conversion and indirect combustion of a heavy hydrocarbon feedstock in a redox chemical loop for producing hydrocarbon streams. The heavy hydrocarbon feedstock (1) is brought into contact with inert particles (2) in a thermal conversion zone (100). Thermal conversion in the absence of hydrogen, water vapour and a catalyst produces a first gaseous effluent of hydrocarbon compounds (4) and coke, which effluent is deposited on the inert particles (5). The latter is then burned in a redox chemical loop (200) in the presence of oxygen-carrying solid particles (6). The inert particles thus flow between the thermal conversion zone (100) and a reduction zone (300) of the chemical loop while the oxygen-carrying solid particles flow between the oxidation (400) and reduction zones (300) of the chemical loop.

The present invention relates to a process for the hydroconversion of a feedstock comprising at least 50% by weight of a fraction of plastic pyrolysis oil and / or CSR (102) and a fraction of a heavy hydrocarbon fraction (101), the latter containing at least 50% by weight of a portion with a boiling point of at least 300° C. and containing sulfur and nitrogen. The hydroconversion uses one or more ebullated bed or hybrid ebullated bed reactors, preferably two successive hydroconversion steps. The process according to the invention allows to produce materials with a lower boiling point and with improved yields of a given fraction for the production of chemical compounds, for example for fuels or petrochemicals, of higher quality, while facilitating the processing of the hydroconverted products in downstream processes such as fixed bed hydrotreating and maintaining good stability of the unconverted fraction.

System and method for mixing a catalyst precursor into heavy oil include parallel mixing lines configured to receive and mix a diluted precursor mixture (catalyst precursor premixed with a hydrocarbon diluent) with heavy oil to form a conditioned feedstock. One of the mixing lines can be periodically taken offline (e.g., for maintenance) while one or more remaining mixing lines continue to form conditioned feedstock. A bypass line maintains substantially continuous flow volume of heavy oil when one of the mixing lines is taken offline. Valves and flow meters can be used to regulate flow through the mixing lines and bypass line. The system permits virtually unlimited scaleup of the mixing process while permitting periodic maintenance of the system without taking it completely offline. Mixing a catalyst precursor into heavy oil forms colloidal-sized catalyst particles in situ having high catalytic activity that promote beneficial upgrading reactions when hydroprocessing heavy oil.