94results about "Effluent separation" patented technology

The invention belongs to the technical field of lubricating oil processing, and particularly relates to lubricating oil hydrofining equipment which comprises a high-pressure tank, a high-pressure pump, an oil inlet pipe and a hydrogen inlet pipe. The output end of the oil inlet pipe and the output end of the hydrogen inlet pipe are both located on the lower portion of a hydrogenation cavity of the high-pressure tank, the spiral plate is installed in the middle of the hydrogenation cavity of the high-pressure tank, a hydrogenation catalyst is arranged on the surface of the spiral plate, and the permeable membrane separation barrel is installed on the upper portion of the hydrogenation cavity of the high-pressure tank; a permeable membrane for hydrogen and waste gas to enter is arranged on the outer wall of the permeable membrane separation barrel, the input end of the exhaust pipe extends into the permeable membrane separation barrel, the output end of the exhaust pipe is connected with the sucking pump, the input end of the oil outlet pipe extends into the upper part of the hydrogenation chamber of the high-pressure tank, and the output end of the oil outlet pipe is provided with a pressure limiting valve; hydrogenation mixing, hydrogenation refining and oil-gas separation are carried out in a high-temperature and high-pressure tank body, the integration level is high, the energy consumption is low, and the refining efficiency is high.

A method for producing liquid organic hydrogen carriers from plastic oil. The method includes passing a plastic oil stream and an input hydrogen stream to a hydrogenation unit to form a hydrotreated effluent stream and passing the hydrotreated effluent stream to a separator to isolate the liquid organic hydrogen carriers as an LOHC stream from the unreacted hydrogen and byproducts as a residual stream. The method further includes passing the residual stream to a reclamation unit to recover the unreacted hydrogen as a recovered hydrogen stream from the residual stream and passing the recovered hydrogen stream to the hydrogenation unit to offset hydrogen demand from the input hydrogen stream. The remainder of the residual stream upon recapture of the unreacted hydrogen generates a byproducts stream.

A process for improving yield of kerosene from a renewable feedstock involves directing a to a lead stripper to separate a lead stripper bottoms stream comprising naphtha and higher boiling point range hydrocarbons and a lead stripper overhead stream. The lead stripper bottoms stream is passed to a naphtha recovery column to separate a vapor stream comprising naphtha and water in an overhead stream from a heavy hydrocarbon product stream. The vapor stream is condensed and water is removed to produce a product naphtha stream. Kerosene and diesel boiling point range product streams are separated from the heavy hydrocarbon product stream in a vacuum fractionator.

A method for transporting hydrogen may comprise, at a first hydrocarbon processing facility, passing a heavy naphtha stream, a C9+ aromatic compounds-containing stream, and an input hydrogen-containing stream to a hydrotreater to form a hydrotreated effluent stream; passing the hydrotreated effluent stream to a separation unit to form a naphthenics-containing stream and a separation unit effluent stream; transporting the naphthenic stream to a second hydrocarbon processing facility; and at the second hydrocarbon processing facility, passing at least a portion of the naphthenic stream to a dehydrogenation unit to form a hydrogen product stream. The first hydrocarbon processing facility and the second hydrocarbon processing facility may be separated by a distance of at least 100 km. Further disclosed herein are methods of processing hydrogen which produce aromatic compounds, including C9+ aromatic compounds containing streams.

The present invention relates to a method for treating plastic pyrolysis oil, comprising: a) hydrogenating said feedstock in a mixture with at least a portion of the liquid effluent obtained from step c) in the presence of hydrogen and a catalyst at a temperature of 140-340° C.; b) hydrotreating said hydrogenated effluent in the presence of hydrogen and a catalyst; c) separating the hydrotreated effluent, said separation being carried out at high temperature and under high pressure to obtain a gaseous effluent and a liquid effluent, and recycling a portion of the liquid effluent upstream of step a); d) feeding at low temperature and under high pressure the other portion of the gaseous and liquid effluents obtained from step c) and an aqueous solution to carry out the separation and obtain a hydrocarbon-based effluent.

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 relates to a method for treating plastic pyrolysis oil, comprising the steps of: hydrotreating a feedstock in the presence of hydrogen and a catalyst; separating / washing the hydrotreated effluent in the presence of an aqueous solution; obtaining a first aqueous effluent and a hydrotreated hydrocarbon effluent; separating H2S contained in the first aqueous effluent; obtaining a gas phase containing H2S and a second aqueous effluent; the gas phase containing H2S can be at least partially recycled upstream of step b); separating NH3 contained in the second aqueous effluent; obtaining a gas phase containing NH3 and a third aqueous effluent. The present invention makes it possible to reduce the consumption of sulfurizing agents to maintain the catalyst in sulfide form in a low sulfur content feedstock by recycling the H2S resulting from the method.

The application discloses a processing method of aromatic raffinate oil. The method comprises the following steps: (1) contacting and reacting aromatic raffinate oil, hydrogen and a hydroconversion catalyst in a hydroconversion reaction zone, wherein the hydroconversion catalyst is a molecular sieve catalyst, and the molecular sieve is selected from any one of mordenite or ZSM-5 molecular sieve; (2) separating the hydroconversion reaction effluent obtained in the step (1) to obtain a hydrogen-rich gas and a liquid phase stream; and (3) separating the liquid phase stream obtained in the step (2) to obtain a liquid phase product and a gas phase product. The method can effectively convert isomeric alkanes in the aromatic raffinate oil into n-alkanes, and improve the ethylene raw material quality.

The application discloses a method for producing ethylene raw material. The method comprises the following steps: mixing hydrocracking light naphtha and hydrogen into a first hydroconversion reaction zone to react, and then the reaction effluent enters a separation system to obtain hydrogen-rich gas and a first hydroconversion product; the first hydroconversion product is separated to obtain ethane, propane, isobutane, isopentane and n-pentane; the isobutane is mixed with hydrogen into a second hydroconversion reaction zone, and the reaction effluent is separated to obtain n-butane; the second hydroconversion reaction zone is filled with a hydroconversion catalyst containing ZSM-35 molecular sieve; and the isopentane is recycled to the inlet of the first hydroconversion reaction zone. The first hydroconversion reaction zone is filled with a hydroconversion catalyst containing mordenite, and at least two catalyst beds are filled; and the active metal content of the hydroconversion catalyst decreases in turn along the flow direction. The method can effectively improve the proportion of normal alkanes in the product and improve the quality of the ethylene raw material.

This invention discloses a technical field of lubricating oil processing, particularly relating to a lubricating oil hydrorefining equipment, comprising a high-pressure tank, a high-pressure pump, an oil inlet pipe, and a hydrogen inlet pipe; it also includes a spiral plate, a permeate membrane separator, an exhaust pipe, a vacuum pump, and an oil outlet pipe. The output ends of the oil inlet pipe and the hydrogen inlet pipe are both located in the lower part of the hydrogenation chamber of the high-pressure tank. The spiral plate is installed in the middle of the hydrogenation chamber of the high-pressure tank, and a hydrogenation catalyst is disposed on the surface of the spiral plate. The permeate membrane separator is installed in the upper part of the hydrogenation chamber of the high-pressure tank, and a permeate membrane for hydrogen and waste gas to enter is disposed on the outer wall of the permeate membrane separator. The input end of the exhaust pipe extends into the interior of the permeate membrane separator, and the output end of the exhaust pipe is connected to the vacuum pump. The input end of the oil outlet pipe extends into the upper part of the hydrogenation chamber of the high-pressure tank, and a pressure limiting valve is disposed at the output end of the oil outlet pipe. Hydrogenation mixing, hydrogenation refining, and oil-gas separation are carried out in a high-temperature and high-pressure tank, with high integration, low energy consumption, and high refining efficiency.

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.

A method for producing liquid organic hydrogen carriers from plastic oil. The method includes passing a plastic oil stream and an input hydrogen stream to a hydrogenation unit to form a hydrotreated effluent stream and passing the hydrotreated effluent stream to a separator to isolate the liquid organic hydrogen carriers as an LOHC stream from the unreacted hydrogen and byproducts as a residual stream. The method further includes passing the residual stream to a reclamation unit to recover the unreacted hydrogen as a recovered hydrogen stream from the residual stream and passing the recovered hydrogen stream to the hydrogenation unit to offset hydrogen demand from the input hydrogen stream. The remainder of the residual stream upon recapture of the unreacted hydrogen generates a byproducts stream.

An integrated process for upgrading a hydrocarbon oil feed stream utilizing a delayed coker and steam enhanced catalytic cracker includes solvent deasphalting the hydrocarbon oil stream to form at least a deasphalted oil stream and heavy residual hydrocarbons, the heavy residual hydrocarbons including at least asphaltenes; delayed coking the heavy residual hydrocarbons to form petroleum coke and a delayed coker product stream; hydrotreating the delayed coker product stream and the deasphalted oil stream to form a light C5+ hydrocarbon stream, and a heavy C5+ hydrocarbon stream; steam enhanced catalytically cracking the light C5+ hydrocarbon stream to form a light steam enhanced catalytically cracked product stream including olefins, benzene, toluene, xylene, naphtha, or combinations thereof; and steam enhanced catalytically cracking the heavy C5+ hydrocarbon stream to form a heavy steam enhanced catalytically cracked product including olefins, benzene, toluene, xylene, naphtha, or combinations thereof.

The application discloses a hydroconversion method of sulfur-containing naphtha. The method comprises the following steps: mixing the sulfur-containing naphtha with hydrogen and performing hydroconversion reaction through a hydroconversion reaction zone; the reaction effluent enters a separation system to obtain hydrogen-rich gas and a hydroconversion product through separation; the hydroconversion reaction zone is sequentially filled with a hydroconversion catalyst I and a hydroconversion catalyst II along the flow direction; and the volume ratio of the hydroconversion catalyst I to the hydroconversion catalyst II is 1:3-3:1. The method can effectively convert isomeric alkanes in the naphtha into normal alkanes, improve the ethylene raw material quality, and solve the problem of sulfur injection in the ethylene production device.

The application discloses a processing method of sulfur-containing naphtha. The method comprises the following steps: (1) mixing the sulfur-containing naphtha with hydrogen, and passing the mixture through a hydroconversion reaction zone, wherein the hydroconversion reaction zone is filled with at least two hydroconversion catalyst beds, and the mass content of active metals in the downstream catalyst bed is 1-25 percentage points lower than that in the upstream catalyst bed in terms of oxides; (2) carrying out high-pressure separation on the hydroconversion reaction effluent obtained in the step (1), and separating hydrogen-rich gas and liquid phase effluent, wherein the liquid phase effluent enters a separation system, and ethane, propane and n-butane are separated. The method can solve the problem of sulfur injection in an ethylene production device by using hydrogen sulfide-containing hydrogenation products as ethylene raw materials.

The utility model discloses a biomass tar cracking device under hydrogen-rich atmosphere, which relates to the technical field of biomass tar cracking, and comprises a reaction tank body, a mounting pipe is rotatably arranged in the middle of the upper end of the reaction tank body, a plurality of air inlets are arranged on the mounting pipe, and filter screen plates are fixedly arranged in the air inlets. A cleaning mechanism is arranged at the upper end in the reaction tank body, a rotary connecting pipe is rotationally arranged on the mounting pipe, and a material turning mechanism is arranged at the bottom end of the mounting pipe. According to the reaction tank disclosed by the utility model, the filter screen plates are arranged at the gas inlets in the mounting pipe, so that impurities in cracked gas can be conveniently filtered, and cracked materials at the bottom end in the reaction tank body can be conveniently turned over circularly by arranging the transmission pipe and the spiral plate.

The present invention relates to a process for producing paraffins by hydrotreatment, in particular from a composition comprising a plastic liquefaction oil, said composition comprising paraffins, olefins, aromatics and heteroatoms.The process comprises: (a) a step of separating a portion of the paraffins and olefins contained in said composition comprising at least one step of crystallization (i) of said composition by lowering the temperature from 10°C to 60°C from an initial temperature at which said composition is entirely liquid and obtaining a mixture comprising a solid product enriched in paraffins and depleted in olefins, aromatics and heteroatoms and an effluent depleted in paraffins and enriched in olefins, aromatics and heteroatoms, followed by at least one step of separation (ii) of said solid product and said effluent, (b) a step of hydrotreatment of the solid product of step (a) during which the olefins contained in said solid product are hydrogenated and an effluent containing paraffins and at most 2% m / m of olefins is produced. Abstract figure: without.

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 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.

In accordance with one or more embodiments herein, an integrated process for upgrading a hydrocarbon oil feed stream utilizing a delayed coker, steam enhanced catalytic cracker, and an aromatics complex includes solvent deasphalting the hydrocarbon oil stream; delayed coking the heavy residual hydrocarbons; hydrotreating the delayed coker product stream and the deasphalted oil stream to form a light C5+ hydrocarbon stream and a heavy C5+ hydrocarbon stream; steam enhanced catalytically cracking the light C5+ hydrocarbon stream; steam enhanced catalytically cracking the heavy C5+ hydrocarbon stream; passing at least a portion of the light steam enhanced catalytically cracked stream, the heavy steam enhanced catalytically cracked stream, or both to a product separator to produce a olefin product stream, a naphtha product stream, and a BTX product stream; and processing the naphtha product stream in the aromatics complex to produce benzene and xylenes.

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.

The application discloses a method for converting sulfur-containing naphtha. The method comprises the following steps: mixing the sulfur-containing naphtha with hydrogen, and then passing the mixture through a hydroconversion reaction zone; and separating a reaction product to obtain hydrogen-rich gas and a hydroconversion product, wherein the sulfur content in the hydroconversion product is 50-200 mg / kg, and the hydroconversion reaction zone is filled with at least two hydroconversion catalyst beds, and the active metal content in the catalysts decreases in sequence along the flow direction. The hydroconversion product containing a certain amount of hydrogen sulfide is used as ethylene raw material, so that the problem of sulfur injection in an ethylene production device can be solved.

The present invention relates to a method for treating plastic pyrolysis oil, comprising the steps of: hydrotreating a feedstock in the presence of hydrogen and a catalyst; separating / washing the hydrotreated effluent in the presence of an aqueous solution; obtaining a first aqueous effluent and a hydrotreated hydrocarbon effluent; separating H2S contained in the first aqueous effluent; obtaining a gas phase containing H2S and a second aqueous effluent; the gas phase containing H2S can be at least partially recycled upstream of step b); separating NH3 contained in the second aqueous effluent; obtaining a gas phase containing NH3 and a third aqueous effluent. The present invention makes it possible to reduce the consumption of sulfurizing agents to maintain the catalyst in sulfide form in a low sulfur content feedstock by recycling the H2S resulting from the method.

The subject process enhances catalytic activity for demetallization and desulfurization of a residue feed stream by splitting a recycle hydrogen stream and feeding each of the split hydrogen streams to the first and second stages of demetallation and desulfurization, respectively, with interstage separation. The recycle hydrogen stream may first undergo scrubbing to remove acid gases and compression before recycle. The recycle hydrogen stream is taken from a first hot vapor stream from the first hydrotreating unit and a second hot vapor stream from the second hydrotreating unit.

The invention is entitled "Paraffin Dehydrogenation Process and Apparatus". A process for recovering hydrogen from a dehydrogenation reactor effluent is disclosed. A feed stream comprising hydrocarbons and hydrogen is passed to a dehydrogenation reactor maintained at dehydrogenation conditions to provide a dehydrogenation reactor effluent. The dehydrogenation reactor effluent is passed to a cold box separation unit to provide a liquid hydrocarbon product stream and a recycle hydrogen stream. A return portion of the recycle hydrogen stream is passed to a reactor effluent compressor. The subject discloses improved processes and apparatus that enable a paraffin dehydrogenation reactor to be operated at a reduced H2 / HC ratio without the need for an investment in a re-sized compressor or a re-sized turbo-expander or separator in the cold box.

The invention relates to a method for producing light aromatic hydrocarbon by catalytic conversion of heavy aromatic hydrocarbon, which comprises the following steps: carrying out non-hydrogen catalytic cracking reaction on a raw material containing heavy aromatic hydrocarbon through a dense-phase fluidized bed reactor, so that the heavy aromatic hydrocarbon can be efficiently converted into the light aromatic hydrocarbon. The problems of high hydrogen consumption, harsh operation conditions and aromatic hydrocarbon loss caused by a traditional hydrogenation process can be avoided; on the other hand, the problem that low-value heavy aromatics are difficult to utilize can be solved, and efficient utilization of resources is achieved. Meanwhile, the dense-phase fluidized bed reactor is adopted for catalytic cracking reaction, and the yield of the BTX product can be further increased. In addition, when the raw material containing the heavy aromatics contains non-aromatics, by-products of low-carbon olefins can be produced by adopting the method disclosed by the invention, and the utilization rate of the raw material is further improved.

A method for producing paraffins by hydrotreatment, in particular from a composition comprising a plastic liquefaction oil, the composition comprising paraffins, olefins, aromatics and heteroatoms.

The application discloses a conversion method of light naphtha. The method comprises the following steps: (1) mixing light naphtha, optionally added olefins and hydrogen through a hydroconversion reaction zone, and controlling the olefin content in the total feed of the light naphtha and the optionally added olefins to be 1% to 8% of the total feed weight; the hydroconversion reaction zone is filled with a hydroconversion catalyst containing ZSM-5 molecular sieve; (2) the hydroconversion reaction effluent of step (1) enters a high-pressure separator, the obtained hydrogen-rich gas is used as circulating hydrogen, and the liquid phase effluent enters a separation system to obtain ethane, propane and n-butane. The method can increase the proportion of C2-C4 normal alkanes in the hydrogenation product, and reduce the content of by-product methane.