Abstract: The present invention relates to a process for producing olefins from a hydrocarbon feedstock 11 having a sulfur content of at least 0.1 weight %, an initial boiling point of at least 180° C. and a final boiling point of at least 600° C.

Abstract: A process for producing light olefins from inferior oils includes the steps of: subjecting an inferior oil to a thermal conversion reaction in the presence of hydrogen to obtain a conversion product; separating the conversion product to obtain a first separated product; separating the first separated product to obtain an upgraded oil and a pitch; subjecting the upgraded oil to hydro-upgrading to obtain a hydro-upgraded oil; separating the hydro-upgraded oil to obtain a hydro-upgraded heavy oil; and subjecting the hydro-upgraded heavy oil to catalytic cracking to obtain a catalytic cracking product comprising a light olefin.

Abstract: Devices and methods for actively controlling the production of multistage and multimodal polymers. The device may include a reaction vessel configured to contain a polymer solution and generate polymer reactions in at least two stages as well as one or more detectors configured to monitor at least one reaction characteristic of the polymer solution contained in the reaction vessel. The device may further include a controller coupled with the reaction vessel and the one or more detectors, the controller configured to actively control the development of a predetermined reaction characteristic by modifying at least one process control variable based on the at least one reaction characteristic monitored by the detector.

Abstract: The instant disclosure relates to cosmetic compositions that when applied to skin instantaneously and dramatically improve the appearance of the skin. The compositions include volatile hydrocarbon oil; mineral thickening agents; silicone elastomers; and hydrophobic film forming polymers; wherein the weight ratio of the total amount of hydrophobic film forming polymers to the total amount of mineral thickeners (film forming polymers:mineral thickening agent) is 1:1 to 8:1, and the weight ratio of the total amount of silicone elastomer to the total amount of mineral thickener (silicone elastomer:mineral thickening agent) is 1:1 to 5:1. Methods for improving the appearance of skin comprising application of the cosmetic compositions to the skin are also disclosed.

Abstract: A multi-stage process for transforming a high sulfur ISO 8217 compliant Feedstock Heavy Marine Fuel Oil involving a core desulfurizing process that produces a Product Heavy Marine Fuel Oil that can be used as a feedstock for subsequent refinery process such as anode grade coking, needle coking and fluid catalytic cracking. The Product Heavy Marine Fuel Oil exhibits multiple properties desirable as a feedstock for those processes including a sulfur level has a maximum sulfur content (ISO 14596 or ISO 8754) between the range of 0.05 mass % to 1.0 mass. A process plant for conducting the process is also disclosed.

Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to hydroprocess opportunity feedstocks (i.e., lower quality heavy oils or lower quality feedstock blends) while maintaining or increasing the rate of production of converted products. The dual catalyst system improves the ability of the upgraded ebullated bed hydroprocessing system to accommodate and withstand negative effects of periodic use of opportunity feedstocks (e.g., without significantly increasing equipment fouling and/or sediment production). In some cases, an upgraded ebullated bed reactor using the dual catalyst system can hydroprocess opportunity feedstocks while decreasing equipment fouling and/or sediment production.

Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to increase rate of production of converted products. The rate of production is achieved by increasing reactor severity, including increasing the operating temperature and at least one of throughput or conversion. The dual catalyst system permits increased reactor severity and provides increased production of converted products without a significant increase in equipment fouling and/or sediment production. In some cases, the rate of production of conversion products can be achieved while decreasing equipment fouling and/or sediment production.

Abstract: A process for treatment of PFO from a steam cracking zone includes hydrodealkylating PFO or a portion thereof for conversion of polyaromatics compounds contained in the PFO into hydrodealkylated aromatic compounds with one benzene ring, a hydrodealkylated BTX+ stream. The hydrodealkylated BTX+ stream is separated into BTX compounds.

Abstract: The processes and systems herein integrate hydroprocessing and coking in a manner to effectively upgrade/desulfurize crude oil feedstocks. An initial liquid hydrocarbon feedstock, such as crude oil, is upgraded by fractionating both the hydrocarbon feedstock and coker thermally cracked hydrocarbon products in a fractionating zone. A coker recycle stream is thermally cracked to produce coker thermally cracked hydrocarbon products that are passed to the fractionating zone. The hydrocarbon distillates are hydroprocessed under conditions effective for desulfurization and conversion into lighter hydrocarbon distillates to produce a hydroprocessed liquid hydrocarbon effluent, such as a bottomless synthetic crude oil.

Abstract: The present invention provides a catalyst for aromatization of a long-carbon chain alkane and a preparation method thereof. In the present invention, a molecular sieve containing a BEA structure is taken as an active component and mixed with a carrier, and then the mixture is formed, dried and calcined to obtain the catalyst for aromatization of a long-carbon chain alkane.

Abstract: Systems and methods for direct crude oil upgrading to hydrogen and chemicals including separating an inlet hydrocarbon stream into a light fraction and a heavy fraction comprising diesel boiling point temperature range material; producing from the light fraction syngas comprising H2 and CO; reacting the CO produced; producing from the heavy fraction and separating CO2, polymer grade ethylene, polymer grade propylene, C4 compounds, cracking products, light cycle oils, and heavy cycle oils; collecting and purifying the CO2 produced from the heavy fraction; processing the C4 compounds to produce olefinic oligomerate and paraffinic raffinate; separating the cracking products; oligomerizing a light cut naphtha stream; hydrotreating an aromatic stream; hydrocracking the light cycle oils to produce a monoaromatics product stream; gasifying the heavy cycle oils; reacting the CO produced from gasifying the heavy cycle oils; collecting and purifying the CO2; and processing and separating produced aromatic compounds int

Abstract: Conversion of heavy fossil hydrocarbons (HFH) to a variety of value-added chemicals and/or fuels can be enhanced using microwave (MW) and/or radio-frequency (RE) energy. Variations of reactants, process parameters, and reactor design can significantly influence the relative distribution of chemicals and fuels generated as the product. In one example, a system for flash microwave conversion of HFH includes a source concentrating microwave or RF energy in a reaction zone having a pressure greater than 0.9 atm, a continuous feed having HFH and a process gas passing through the reaction zone, a HFH-to-liquids catalyst contacting the HFH in at least the reaction zone, and dielectric discharges within the reaction zone. The HFH and the catalyst have a residence time in the reaction zone of less than 30 seconds. In some instances, a plasma can form in or near the reaction zone.

Abstract: The invention relates to a process for converting a feedstock comprising pyrolysis oil and a heavy hydrocarbon-based feedstock, with: a) a step of hydroconversion in a reactor; b) a step of separating the liquid effluent obtained from step a) into a naphtha fraction, a gas oil fraction, a vacuum gas oil fraction and an unconverted residue fraction; c) a step of hydrocracking of the vacuum gas oil fraction; d) a step of fractionating the hydrocracked liquid effluent obtained from step c) into a naphtha fraction, a gas oil fraction and a vacuum gas oil fraction; e) a step of steam cracking of a portion of the naphtha fraction obtained from step d); f) a step of fractionating at least a portion of the steam-cracked effluent obtained from step e); g) a step in which the pyrolysis oil fraction obtained from step f) is sent into step a).

Abstract: A catalyst structure includes a carrier having a porous structure composed of a zeolite type compound and at least one catalytic material existing in the carrier. The carrier has channels communicating with each other, and the catalytic material is a metal fine particle and exists at least in the channel of the carrier.

Abstract: A fixed-bed bioreactor system is provided that includes a vessel with a media inlet, a media outlet, and an interior cavity disposed between and in fluid communication with the media inlet and media outlet. The vessel further includes a cell culture substrate disposed in the interior cavity between the media inlet and the media outlet in a packed-bed configuration, the cell culture substrate including a plurality of porous disks in a stacked arrangement. The interior cavity includes a cell culture section and a spacer section, the cell culture substrate defining the cell culture section and the spacer section being disposed between the cell culture section and the media outlet, and each of the plurality of porous disks has a surface configured to culture cells thereon.

Abstract: An ebullated bed hydroprocessing system is upgraded using a dual catalyst system that includes a heterogeneous catalyst and dispersed metal sulfide particles to produce less fouling sediment. The dual catalyst system more effectively converts sediment-forming precursors to produce sediment that is less fouling than sediment produced using only the heterogeneous catalyst and not the dispersed metal sulfide particles. The dual catalyst system provides for a lower rate of equipment fouling for a given sediment production rate and/or concentration. In some cases, sediment production rate and/or concentration can be maintained or increased while equipment fouling is reduced. In some cases, sediment production rate and/or concentration can be increased without increasing equipment fouling.

Abstract: A method and a composition for treating tailings from a separation process are disclosed, where bitumen is separated from mineral solids. Tailings include an aqueous phase with suspended solid particulate material and residual bitumen and have a dry solids content <25 weight-%. The method includes addition of a flocculating agent including polyacrylamide to the tailings, as well as addition of an auxiliary agent including ionic liquid to tailings in conjunction with the flocculating agent. Flocs, which include solid particulate material, are formed and the formed flocs are separated from the aqueous phase. The composition in a copolymer of (meth)acrylamide and an auxiliary agent comprising ionic liquid.

Abstract: An interconnected set of two or more stages of reactors to form a bio-reforming reactor that generates syngas for a number of different liquid fuel or chemical processes is discussed. A first stage includes a circulating fluidized bed reactor that is configured to cause a chemical devolatilization of the biomass into its reaction products of constituent gases, tars, chars, and other components, which exit through a reactor output from the first stage. A second stage of the bio-reforming reactor has an input configured to receive a stream of some of the reaction products that includes the constituent gases and at least some of the tars as raw syngas, and then chemically reacts the raw syngas within a vessel of the second stage to make the raw syngas from the first stage into a chemical grade syngas by further cracking the tars, excess methane, or both.

Abstract: A method for producing a metal nitride and/or a metal carbide, a metal nitride and/or metal carbide optionally produced according to the method, and the use of the metal nitride and/or carbide in catalysis optionally catalytic hydroprocessing. Optionally, the method comprises: i) contacting at least one metal oxide comprising at least one first metal M1 with a cyanometallate comprising at least one second metal M2 to form a reaction mixture; and, ii) subjecting the reaction mixture to a temperature of at least 300° C. for a reaction period. Optionally, the metal nitride and/or metal carbide is a metal nitride comprising tungsten nitride.

Abstract: The present disclosure relates to conversion of hydrocarbons. A hydrocarbon feed is hydroprocessed wherein it is hydrocracked in the presence of a catalyst to obtain different hydrocarbon products, which can be suitably processed further to obtain valuable hydrocarbon products.

Abstract: The present invention provides a steam reforming process for heavy oil or hydrocarbons using a circulating fluidized bed reactor, the process having a reforming step and a regeneration step, wherein the reforming step and the regeneration step comprise a fluidized reactor containing a fluidizable nickel-containing reforming catalyst and produce hydrogen as a product of the reforming bed. The invention produces high purity hydrogen in the synthesis gas product stream and avoids irreversible fouling on the catalyst.

Abstract: The present invention relates to a process for converting a high-boiling hydrocarbon feedstock into lighter boiling hydrocarbon products, said lighter boiling hydrocarbon products being suitable as a feedstock for petrochemicals processes, said converting process comprising the following steps of: feeding a hydrocarbon feedstock having a boiling point of >350 deg Celsius to a cascade of hydrocracking unit(s), feeding the bottom stream of a hydrocracking unit as a feedstock for a subsequent hydrocracking unit, wherein the process conditions in each hydrocracking unit(s) are different from each other, in which the hydrocracking conditions from the first to the subsequent hydrocracking unit(s) increase from least severe to most severe, and processing the lighter boiling hydrocarbon products from each hydrocracking unit(s) as a feedstock for one or more petrochemicals processes.

Abstract: Oil soluble organic-inorganic fused slurry phase hydroprocessing catalysts for heavy oils and residues are prepared at supercritical conditions. The hydrodemetallization, hydrodesulfurization, asphaltene conversion and hydrocracking activities of a residue having high percentage of metals, sulfur and asphaltene have been tested in an autoclave batch reactor. The different organic compounds are used to modify the solid fused material (catalyst). The effect of the concentration of modifier on the hydroprocessing and hydrocracking reactions has also been investigated.

Abstract: A novel synthetic crystalline molecular sieve material, designated SSZ-118, is provided. SSZ-118 can be synthesized using 1,6-bis(N-methylpyrrolidinium)hexane dications as a structure directing agent. SSZ-118 may be used in organic compound conversion and/or sorptive processes.

Abstract: A process using a dealkylated aromatic liquid improves a heavy hydrocarbon liquid used for supporting molybdenum carbonized catalyst. Dealkylated aromatic liquid can be derived from heavy hydrocarbon materials that have been subjected to cracking, such as fluid catalytic cracking or slurry hydrocracking. The heavy hydrocarbon liquid can comprise a portion of resid SHC feed and a portion of a gas oil stream from SHC effluent.

Abstract: The present invention relates to an integrated process to convert crude oil into petrochemical products comprising crude oil distillation, aromatic ring opening, and olefins synthesis, which process comprises subjecting a hydrocarbon feed to aromatic ring opening to produce LPG and subjecting the LPG produced in the integrated process to olefins synthesis. Furthermore, the present invention relates to a process installation to convert crude oil into petrochemical products comprising a crude distillation unit comprising an inlet for crude oil and at least one outlet for kerosene and/or gasoil; an aromatic ring opening unit comprising an inlet for a hydrocarbon feed to aromatic ring opening and an outlet for LPG; and a unit for the olefins synthesis comprising an inlet for LPG produced by the integrated petrochemical process installation and an outlet for olefins.

Abstract: An improved method of operating a conventional ebullated bed process for the hydroconversion of heavy hydrocarbon feedstocks so as to provide for low or reduced sediment content in the conversion product without the loss of hydrodesulfurization function.

Abstract: An installation for the hydrotreatment and hydroconversion of hydrocarbon-containing feedstocks, with a common fractionation section, for the production of at least one of the following products: naphtha (light and/or heavy), diesel, kerosene, distillate and residue: comprising at least: at least one hydroconversion reactor, a hot high-pressure separator drum B-1, a cold high-pressure separator drum B-2, at least one hydrotreatment reactor, a cold high-pressure separator drum B-20, a common fractionation section separating a top fraction, an intermediate fraction and a heavy fraction, An integrated hydroconversion and hydrotreatment process implementing said installation.

Abstract: Techniques for processing residuum include receiving a feed stream that includes a residuum hydrocarbon fraction at an ebullated bed hydroconversion reactor; contacting the residuum hydrocarbon fraction with hydrogen and a hydroconversion catalyst in the ebullated bed hydroconversion reactor to produce a partially converted reactor effluent product; separating, in a first separation zone, the partially converted reactor effluent product into a distillate stream and a heavy hydrocarbon stream; feeding the distillate stream to a bottom portion of an integrated hydrocracking/hydrofinishing reactor; and feeding the heavy hydrocarbon stream to a top portion of the hydrofinishing reactor.

Abstract: In a method of hydroprocessing, hydrogen gas for the hydroprocessing reaction is combined with a liquid feed composition comprising a feedstock to be treated and a diluent to form a feed stream, at least a portion of the hydrogen gas being dissolved in the liquid feed composition of the feed stream, with non-dissolved hydrogen gas being present in the feed stream in an amount of from 1 to 70 SCF/bbl of the liquid feed composition. The feed stream is contacted with a hydroprocessing catalyst, within a reactor while maintaining a liquid mass flux within the reactor of at least 5000 lb/hr·ft2 to form a hydroprocessed product.

Abstract: A process is disclosed for reducing loss of hydrogen in solution to the fractionation section of a hydroprocessing unit. The hot flash overhead vapor bypasses the cold flash drum and may be treated with the cold flash vapor stream from the cold flash drum to recover hydrogen. Substantial conservation of hydrogen gas is achieved.

Abstract: A method is provided for synthesizing a molecular sieve having the framework structure of SSZ-56 using benzyltributylammonium cations as a structure directing agent.

Abstract: Supercritical upgrading reactors and reactor systems are provided for upgrading a petroleum-based composition using one or more purging fluid inlets to prevent plugging of the catalyst layer in the reactor. Processes for upgrading petroleum-based compositions by utilizing a reactor having at least one purging fluid inlet are also provided.

Abstract: A process and catalyst is disclosed for converting heavy hydrocarbon feed into lighter hydrocarbon products using multifunctional catalysts. Multifunctional catalysts enable use of less expensive metal by substituting expensive metals for less expensive metals with no loss or superior performance in slurry hydrocracking. Less available and expensive ISM can be replaced effectively.

Abstract: Treatment of hydrocarbon streams, and in one non-limiting embodiment refinery distillates, with reducing agents, such as borohydride and salts thereof, alone or together with at least one co-solvent results in reduction of the sulfur compounds such as disulfides, mercaptans, thiophenes, and thioethers that are present to give easily removed sulfides. In one non-limiting embodiment, the treatment converts the original sulfur compounds into hydrogen sulfide or low molecular weight mercaptans that can be extracted from the distillate with caustic solutions, hydrogen sulfide or mercaptan scavengers, solid absorbents such as clay or activated carbon or liquid absorbents such as amine-aldehyde condensates and/or aqueous aldehydes.

Abstract: A hydroprocessing catalyst or catalyst precursor has been developed. The catalyst is a unique crystalline ammonia transition metal molybdotungstate material. The hydroprocessing using the crystalline ammonia transition metal molybdotungstate material or a decomposition product thereof may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

Abstract: A refinery built around a slurry phase hydrocracking process unit, such as a Veba Combi-Cracker (VCC), is simpler, produces more liquid product as transportation fuels and has much higher net cash margin than a refinery built around a coker or other bottoms upgrading processes. The VCC unit replaces one or more processing steps normally included in refineries as separate and distinct processing units including heavy distillate/gas oil cracking and optionally bottoms upgrading and deep desulfurization of diesel and gasoline range cuts. The refinery design is especially suited for heavy crude upgrading and can be tuned to provide a wide range of gasoline to distillate production ratios. The refinery design is “bottomless” in the sense that it produces no heavy fuel oil or asphalt as product and no solid fuel (e.g., petroleum coke).

Abstract: A process for producing C2 and C3 hydrocarbons by a) subjecting a mixed hydrocarbon stream comprising a middle distillate to first hydrocracking to produce a first hydrocracking product stream, b) subjecting a second hydrocracking feed stream to second hydrocracking to produce a second hydrocracking product stream, wherein the second hydrocracking is more severe than the first hydrocracking and c) subjecting a C4 hydrocracking feed stream to C4 hydrocracking optimized for converting C4 hydrocarbons into C3 hydrocarbons in the presence of a C4 hydrocracking catalyst to obtain a C4 hydrocracking product stream, wherein the C4 hydrocracking is more severe than the second hydrocracking. The first hydrocracking product stream, the second hydrocracking product stream and the C4 hydrocracking product stream are fed to a separation system.

Abstract: A contacting device and method are presented for the collection, contacting, and distribution of fluids between particulate beds of a downflow vessel, which may operate in co-current flow. By one approach, the contacting device includes a liquid collection tray, a mixing channel in fluid communication with the liquid collection tray, and a liquid distribution zone.

Abstract: Techniques for processing residuum include receiving a feed stream that includes a residuum hydrocarbon fraction at an ebullated bed hydroconversion reactor; contacting the residuum hydrocarbon fraction with hydrogen and a hydroconversion catalyst in the ebullated bed hydroconversion reactor to produce a partially converted reactor effluent product; separating, in a first separation zone, the partially converted reactor effluent product into a distillate stream and a heavy hydrocarbon stream; feeding the distillate stream to a bottom portion of an integrated hydrocracking/hydrofinishing reactor; and feeding the heavy hydrocarbon stream to a top portion of the integrated hydrocracking/hydrofinishing reactor.

Abstract: Disclosed herein is a method for making diesel, gasoline and LPG comprising coprocessing a petroleum-derived feedstock with up to 50 wt. %, relative to the total weight of the feedstocks, of a lipid-containing feedstock in the presence of a catalyst under fluidized catalyst cracking conditions. Also disclosed herein is a method for making a diesel fuel or a combined diesel and gasoline fuel by injecting up to 50 wt. %, relative to the total weight of the feedstocks, of a lipid-containing feedstock to a stripper or a riser quench downstream from a petroleum derived feedstock injection point in a fluid catalytic cracking unit.

Abstract: Improved alkylation catalysts, alkylation methods, and methods of making alkylation catalysts are described. The alkylation method comprises reaction over a solid acid, zeolite-based catalyst and can be conducted for relatively long periods at steady state conditions. The alkylation catalyst comprises a crystalline zeolite structure, a Si/Al molar ratio of 20 or less, less than 0.5 weight percent alkali metals, and further having a characteristic catalyst life property. Some catalysts may contain rare earth elements in the range of 10 to 35 wt %. One method of making a catalyst includes a calcination step following exchange of the rare earth element(s) conducted at a temperature of at least 575° C. to stabilize the resulting structure followed by an deammoniation treatment. An improved method of deammoniation uses low temperature oxidation.

Abstract: A hydroprocessing catalyst or catalyst precursor has been developed. The catalyst is a transition metal tungstate material, or the decomposition product thereof. The hydroprocessing using the crystalline transition metal molybdotungstate material may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

Abstract: Disclosed are methods and systems for manufacturing lubrication oils. In one embodiment, a method for manufacturing a lubrication oil includes the steps of receiving into an activated carbon guard bed unit an unconverted oil (UCO) feedstock, the UCO feedstock comprising polynuclear aromatic (PNA) compounds and contacting the UCO feedstock with activated carbon within the activated carbon guard bed unit to remove at least a portion of the PNA compounds, thereby forming a treated UCO feedstock.

Abstract: Embodiments herein relate to a process flow scheme for the processing of gas oils and especially reactive gas oils produced by thermal cracking of residua using a split flow concept. The split flow concepts disclosed allow optimization of the hydrocracking reactor severities and thereby take advantage of the different reactivities of thermally cracked gas oils versus those of virgin gas oils. This results in a lower cost facility for producing base oils as well as diesel, kerosene and gasoline fuels while achieving high conversions and high catalyst lives.

Abstract: Embodiments relate generally to methods and systems for processing a gas stream and for removing mercaptans from a feed stream. A method may comprise compressing a semi-treated gas stream, wherein the semi-treated gas stream comprises organic sulfur species and acid gas components; contacting the semi-treated gas stream with a lean solvent; removing at least a portion of the organic sulfur species and acid gas components from the semi-treated gas stream to produce a treated gas stream and a semi-rich solvent stream; contacting a feed gas stream with the semi-rich solvent, wherein the feed gas stream comprises organic sulfur species and acid gas components; and removing at least a portion of the organic sulfur species and acid gas components from the feed gas stream to produce the semi-treated gas stream based on contacting the semi-rich solvent with the feed gas stream.

Abstract: A process for the refining of crude oil, comprising a separation unit of the crude oil, consisting of at least one atmospheric distillation unit for separating the various fractions, a unit for the conversion of the heavy fractions obtained, a unit for improving the quality of some of the fractions obtained by actions on the chemical composition of their constituents, and units for the removal of undesired components, characterized in that the heaviest fraction, the atmospheric distillation residue, is sent to the conversion unit comprising a hydroconversion reactor in slurry phase or of the ebullated bed type, into which hydrogen or a mixture of hydrogen and ¾S is introduced in the presence of a suitable nanodispersed hydrogenation catalyst.

Abstract: Fuels and/or fuel blending components can be formed from hydroprocessing of high lift deasphalted oil. The high lift deasphalting can correspond to solvent deasphalting to produce a yield of deasphalted oil of at least 50 wt %, or at least 65 wt %, or at least 75 wt %. The resulting fuels and/or fuel blending components formed by hydroprocessing of the deasphalted oil can have unexpectedly high naphthene content and/or density. Additionally or alternately, the resulting fuels and/or fuel blending components can have a clear and bright appearance.

Abstract: The present disclosure is directed to a new synthetic crystalline molecular sieve material designated SSZ-111, its synthesis using N,N,N?,N?-tetramethyl-N,N?-diisobutylhexane-1,6-diammonium cations as an organic structure directing agent, and uses for SSZ-111.

Abstract: The present invention discloses a catalyst and process for hydrocracking of heavy hydrocarbon oils having majority portion boiling above 525° C. in the presence of hydrogen. A process comprising first step of converting heavy oil into lighter products in the presence of catalyst and hydrogen in slurry phase is disclosed. The process further comprises recycling of part of liquid products (HVGO) along with fresh heavy oil for improving the product selectivity. This recycled HVGO is having high concentrations of aromatics compounds. The separation of particles generated during the reaction at reactor exit also avoids the chances of choking of downstream sections.