85results 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.

A slurry reactor system including a slurry reactor configured to convert, under slurry hydroconversion conditions, a slurry reactor content flowing upwards and containing a feedstock including one or more of fats, oils and greases, a slurry hydroconversion catalyst and a hydrogen stream to a slurry hydroconversion effluent containing a slurry phase effluent including catalyst particles and a liquid product and a vapor phase effluent including a hydroconversion product, and one or more separation units in fluid communication with the slurry reactor to receive the slurry hydroconversion effluent. A given one of the one or more separation units is configured to separate the slurry phase effluent from the vapor phase effluent.

A slurry reactor system including a slurry reactor configured to convert, under slurry hydroconversion conditions, a slurry reactor content flowing upwards and containing a feedstock including one or more of fats, oils and greases, a slurry hydroconversion catalyst and a hydrogen stream to a slurry hydroconversion effluent containing a slurry phase effluent including catalyst particles and a liquid product and a vapor phase effluent including a hydroconversion product, and a separation unit external to the slurry reactor to separate the slurry phase effluent from the vapor phase effluent to produce a recycled slurry stream. An inlet of the separation unit is in fluid communication with an outlet of the slurry reactor to receive the slurry hydroconversion effluent from the slurry reactor and an outlet of the separation unit is in fluid communication with an inlet of the slurry reactor to receive the recycled slurry stream from the separation unit.

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 present invention relative to a process for the hydroconversion of a feedstock including a fraction of less than 50% by weight of plastic and / or SRF pyrolysis oil (102) and a heavy hydrocarbon fraction (101) containing a portion of at least 50% by weight 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-entrained bed reactors (20), and preferably two successive hydroconversion steps. The process according to the invention allows the production of higher-quality, lower-boiling materials, for example for the production of fuels or chemical compounds for the petrochemical industry, with improved yields of certain cuts and while allowing facilitated processing of the hydroconverted products in downstream steps such as fixed-bed hydrotreatment and while maintaining good stability of the unconverted fraction.

A system and method for mixing a catalyst precursor into heavy oil, forming a diluted precursor mixture using a high-boiling hydrocarbon diluent, mixing the diluted precursor mixture with a heavy oil feedstock to form an adjusted feedstock, subsequently heating the adjusted feedstock to decompose the precursor, and forming dispersed metal sulfide catalyst particles in-situ. Since the high-boiling hydrocarbon diluent is typically at a temperature above the decomposition temperature of the catalyst precursor, it is first fed to a cooler to lower its temperature and avoid premature decomposition of the catalyst precursor. The high-boiling hydrocarbon diluent may include a portion of the heavy oil feedstock, a portion of the adjusted feedstock, a vacuum tower bottom product, or other high-boiling hydrocarbon materials having a boiling point above 524 °C. A portion of the diluent may optionally include a medium-boiling hydrocarbon material having a boiling point below 524 °C.

System and method for mixing a catalyst precursor into heavy oil using a high boiling hydrocarbon diluent to form a diluted precursor mixture, which is mixed with the heavy oil feedstock to form a conditioned feedstock, which is subsequently heated to decompose the precursor and form dispersed metal sulfide catalyst particles in situ. Because the high boiling hydrocarbon diluent is typically at a temperature above the decomposition temperature of the catalyst precursor, it is first feed through a cooler to reduce its temperature to avoid premature decomposition of the catalyst precursor. The high boiling hydrocarbon diluent may include a portion of the heavy oil feedstock, a portion of the conditioned feedstock, a vacuum tower bottoms product, or other high boiling hydrocarbon material having a boiling point higher than 524°C. A portion of the diluent may optionally include a medium boiling hydrocarbon material having a boiling point less than 524°C.

The present invention relates to a gas-liquid separation device, in particular for use in the recirculation zone of a three-phase fluidized bed reactor. The gas-liquid separation device comprises a plurality of separation elements, each having an inlet duct (70) and at least two consecutive bends (71, 72), the first bend (71) being located in a plane (zy), the axis of the first bend (71) forming an orientation angle α: 45°-315° relative to the vertical axis z, and the second bend (72) forming a second orientation angle β: 1°-135° with the first bend (71). The two first consecutive bends (71, 72) are spaced apart by a distance D1 of D / 2-4D, D being the diameter of the inlet duct (70). Each separation element comprises a liquid guider (73), which is arranged at the outlet end of the second bend (72) and has an open cross section.

A gas-liquid separator adapted to separate liquids and gases in an ebullated bed reactor under operating conditions is disclosed. The device can be used in the petroleum and chemical processing industries to separate gases and liquids from a gas-liquid mixture in the reactor during catalytic reactions of hydrocarbonaceous feedstocks at high temperatures and pressures in the presence of hydrogen. The device can be oriented generally vertically and installed in the flow-through pan of the ebullated bed reactor. The device includes a transfer conduit for transferring a gas-liquid mixture from a lower section of the ebullated bed reactor to an upper section of the reactor, a vortex separator having outlets for a gas-rich stream and a liquid-rich stream, and a gas-rich outlet conduit located adjacent to the top of the vortex separator. The transfer conduit includes an internal means for generating helical flow in the gas-liquid mixture, such as a helical insert or spiral insert. The vortex separator is located at the top of the transfer conduit and includes separation means for separating the gas-liquid mixture into a liquid-rich stream and a gas-rich stream. The separation means may be a separator conduit extending from the top of the vortex separator to the upper opening of the transfer conduit, aligned with the gas-rich outlet, and having substantially the same cross-sectional dimensions as that outlet. Advantages provided include improved efficiency of gas-liquid separation and reduced gas holdup within the reactor.

The present invention discloses a method for preparing a shell-based slurry bed hydrogenation catalyst, comprising: washing, drying, coarsely crushing and pulverizing discarded shells to obtain shell powder; immersing the shell powder in an aqueous solution of ferric nitrate to obtain an iron shell powder mixture, drying to obtain iron-containing shell powder; immersing the iron-containing shell powder in an aqueous solution of anionic surfactant, drying to obtain a shell-based slurry bed hydrogenation catalyst. The present invention also discloses a shell-based slurry bed hydrogenation catalyst and its application. The preparation method of the present invention is simple and low in cost. The prepared shell-based hydrogenation catalyst has a rich pore structure and internal and external surface areas, which can maximize the loading or deposition of macromolecular compounds such as asphalt and colloid in inferior heavy oil, and can convert low-value-added inferior heavy oil into feed for fixed bed hydrogenation device, and finally into clean fuel products, which significantly improves its economy and has broad application prospects in the field of inferior heavy oil processing.

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.

A method and apparatus for desulfurizing and separating catalytic cracking light products. The method includes the following steps: 1) contacting the catalytic cracking light products with a desulfurizing adsorbent in an adsorptive desulfurization reaction unit in the presence of hydrogen for desulfurization, and optionally subjecting the desulfurized products to gas-liquid separation to obtain a desulfurized rich gas and a desulfurized crude gasoline. The catalytic cracking light products are overhead oil gas from a catalytic cracking fractionation tower or a rich gas and a crude gasoline from a catalytic cracking fractionation tower; and 2) separately sending the desulfurized rich gas and the desulfurized crude gasoline obtained in 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 method and apparatus are suitable for use in treating the catalytic cracking light products obtained from the catalytic cracking fractionation tower, and can produce a high yield of refined gasoline and a low octane loss.

System and method for mixing a catalyst precursor into heavy oil using a high boiling hydrocarbon diluent to form a diluted precursor mixture, which is mixed with the heavy oil feedstock to form a conditioned feedstock, which is subsequently heated to decompose the precursor and form dispersed metal sulfide catalyst particles in situ. Because the high boiling hydrocarbon diluent is typically at a temperature above the decomposition temperature of the catalyst precursor, it is first feed through a cooler to reduce its temperature to avoid premature decomposition of the catalyst precursor. The high boiling hydrocarbon diluent may include a portion of the heavy oil feedstock, a portion of the conditioned feedstock, a vacuum tower bottoms product, or other high boiling hydrocarbon material having a boiling point higher than 524° C. A portion of the diluent may optionally include a medium boiling hydrocarbon material having a boiling point less than 524° C.

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 present invention relates to a method for hydroconversion of a feedstock comprising a plastic fraction (102), in particular from plastic waste, and a heavy hydrocarbon fraction (101), in particular a heavy hydrocarbon fraction containing a portion of at least 50% by weight, preferably 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), and preferably two successive hydroconversion stages, in order to produce higher quality materials with a lower boiling point, for example for the production of fuels, while allowing the recovery of plastic waste. Figure 1A to be published

The present invention provides a combined process method for treating coal tar, which comprises the following steps: (1) coal tar raw material enters a fractionation unit to obtain light distillate oil and heavy distillate oil; (2) the light distillate oil obtained in step (1) is mixed with a first hydrogen stream and then enters a microbubble generator to obtain a first mixed stream; the heavy distillate oil is mixed with a second hydrogen stream to obtain a second mixed stream; (3) the first mixed stream and the second mixed stream obtained in step (2) respectively enter an ebullating bed hydrogenation reaction zone through a gas-liquid distribution plate, undergo hydrogenation reaction in the presence of hydrogen, and the reaction effluent is subjected to gas-liquid separation to obtain a gas phase effluent and a liquid phase effluent; (4) the liquid phase effluent obtained in step (3) enters a fixed bed hydrogenation reaction zone, and the reaction effluent is separated to obtain products such as liquefied gas, naphtha, and crude white oil. The method has a high hydrogenation conversion rate and low production cost, and can also inhibit the condensation and coking reaction of unsaturated olefins contained in the coal tar, thereby achieving long-term stable operation of the device.

The present invention discloses an application of an iron-based catalyst in the hydro-upgrading of inferior / heavy oil in a slurry bed. In the present invention, a precipitant, an iron salt and / or an additive are oppositely sprayed into a suspension forming tower, and raw materials collide and mix to form catalyst precursor droplets, and then form ultrafine and highly dispersed powders, which serve as the iron-based catalyst. The inferior / heavy oil includes original geological reservoir heavy oil, heavy oil by-products in the process of petroleum refining and processing, heavy oil and asphalt refined from oil sands and oil shales, and tar by-products in the hot processing of heavy hydrocarbon raw materials. By adjusting the temperature gradient and atmosphere in the tower, the present invention can effectively control the catalyst phase. During the hydro-upgrading reaction process, when the catalyst contacts the reactants (heavy / inferior oil), it is in the best active state and has better hydro-upgrading ability.

The present disclosure relates to a method for producing light aromatic hydrocarbons from heavy aromatic hydrocarbons, which comprises: subjecting a feedstock containing heavy aromatic hydrocarbons to a non-hydrogen catalytic cracking reaction in a dense phase fluidized bed reactor, so as to efficiently convert the heavy aromatic hydrocarbons into light aromatic hydrocarbons. On the one hand, the method can avoid the problems of high hydrogen consumption, harsh operating conditions and aromatic hydrocarbon loss caused by the traditional hydrogenation process. On the other hand, the method can solve the problem of difficult utilization of low-value heavy aromatic hydrocarbons and realize efficient utilization of resources. Meanwhile, the method can further improve the yield of BTX products by using the dense phase fluidized bed reactor for catalytic cracking reaction. In addition, when the feedstock containing heavy aromatic hydrocarbons contains non-aromatic hydrocarbons, the method can also produce low-carbon olefins as by-products, further improving the utilization rate of the feedstock.

A gas-liquid separator suitable for separating liquid and gas in an ebullated bed reactor under operating conditions is disclosed. The apparatus may be used in the petroleum and chemical processing industry to catalytically react a hydrocarbonaceous feedstock in the presence of hydrogen at elevated temperature and pressure to separate gas and liquid from a gas and liquid mixture within the reactor. The device is generally vertically oriented and can be mounted in the flow-through tray of an ebullated bed reactor. The apparatus comprises: a transfer conduit for transferring a gas-liquid mixture stream from a lower section of an ebullated bed reactor to an upper section of the reactor; a vortex separation section having a rich gas flow outlet and a rich liquid flow outlet; and a rich gas flow outlet conduit located on top of the vortex separation section and adjacent to the vortex separation section. The delivery conduit includes internal means, such as a helical or helical insert, for generating a helical flow in the gas-liquid mixture. The vortex separation section is located at the top of the transfer conduit and includes separation means for separating the gas-liquid mixture stream into a rich liquid stream and a rich gas stream. A separator conduit extending from the top of the vortex separation section to an upper opening of the transfer conduit may be used as the separation device, the separator conduit aligned with the rich gas flow outlet and having substantially the same cross-sectional dimension as the rich gas flow outlet. Benefits provided include increasing the efficiency of gas and liquid separation and reducing the gas content within the reactor.

A slurry hydroconversion catalyst is described formed from solid biomass having a porous structure with the pores containing slurry catalyst precursor. The slurry hydroconversion catalyst is made by impregnating the porous structure with slurry catalyst precursor. The catalyst is useful in hydroconversion processes to convert feedstocks, including hydrocarbonaceous feeds and biomass feeds, to liquid and gas products, including renewable fuels and other renewable products. The hydroconversion process may utilize solid biomass to prepare the slurry catalyst and as a feedstock and does not require the use of chemically processed or modified biomass. Low coke yields and other benefits may be obtained.

A method is disclosed for preparing a slurry catalyst for use in upgrading a renewable feedstock. The method includes the steps of (a) providing a rework material obtained from a process of making a self-supported hydroprocessing catalyst, the hydroprocessing catalyst containing one or more active metal components selected from the group consisting of Group 6-12 metals from the IUPAC Periodic Table of the Elements, wherein the rework material has an average particle size of from 1 to 300 μm; (b) mixing the rework material with a liquid component to form a slurry catalyst precursor, wherein the liquid component is selected from the renewable feedstock and a liquid carrier, wherein the liquid carrier is a polyol and / or a recycled renewable feedstock comprising heavy and / or unconverted fractions from a slurry hydroprocessing process; and (c) sulfiding the slurry catalyst precursor forming the slurry catalyst.

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.