83results about "Refining with metal oxides" patented technology

The invention provides a dechlorinating agent as well as a preparation method and application thereof, and the dechlorinating agent comprises the following components in percentage by mass: 20-55% of calcium oxide, 10-30% of zinc oxide, 15-40% of aluminum oxide and the balance of an adhesive. The preparation method sequentially comprises the following steps: preparing materials, stirring, mixing and grinding, extruding into strips, drying, activating and sieving. The reformate liquid-phase dechlorinating agent common in the market can remove total chlorine in the reformate to be smaller than or equal to 0.5 ppm and the chlorine capacity is larger than or equal to 10%, the dechlorinating agent provided by the invention can efficiently remove organic chlorine and hydrogen chloride in the reformate, compared with the reformate liquid-phase dechlorinating agent in the market, the chlorine capacity is improved by 20%, the preparation cost can be reduced, the service life is prolonged, the agent replacement frequency is reduced, and the production cost is reduced. And large-scale popularization and application are facilitated.

The invention relates to the technical field of dechlorinating agents, in particular to a dechlorinating agent and a preparation method thereof. The preparation method of the dechlorinating agent comprises the following steps: 1) uniformly mixing quaternary ammonium salt and organic amine, then adding silicate ester, uniformly mixing, reacting for 2-6 hours, carrying out solid-liquid separation, washing a solid, and drying; 2) roasting the solid dried in the step 1) at 550-650 DEG C for 5-10 hours, and cooling to obtain a carrier; 3) uniformly mixing the carrier prepared in the step 2) with a calcium source and a zinc source in water, adjusting the pH value to 10-12, reacting, standing, carrying out solid-liquid separation, and drying the solid, and 4) calcining the dried solid in the step 3) at 800-1000 DEG C for 10-24 hours, and cooling to obtain the dechlorinating agent. The prepared dechlorinating agent is uniform in pore diameter and high in penetrating chlorine capacity, and can effectively reduce the loss of active ingredients.

The present invention is a method for removing sulfur from liquid hydrocarbon feedstocks and for performing hydrogenation reactions in sulfur-contaminated feedstocks, including the hydrogenation of naphthalene in the presence of sulfur compounds, using catalysts or adsorbents comprising metal oxide nanowires decorated with reduced catalytically-active metal particles. In a preferred embodiment, the adsorbent comprises zinc oxide nanowires decorated with catalytically-active metals selected from nickel, cobalt, molybdenum, platinum, palladium, copper, oxides thereof, alloys thereof, and combinations thereof. In some embodiments, the sulfur is removed through a desulfurization process without an external hydrogen supply. The process is effective for the removal of sulfur from diesel fuels and liquid fuel streams, and for deep desulfurization of natural gas streams. The process is also effective for the selective hydrogenation of naphthalene to tetralin in the presence of sulfur compounds.

A treatment composition for remediating for remediating hydrogen sulfide (H2S), carbon dioxide (CO2) and other contaminant(s) in a fluid, including: an organic or hydrocarbon based liquid; at least one hydroxide compound or a hydrate thereof; and sodium sulfide (Na2S) or a hydrate thereof.

A catalyst composition and method for treating a feed including oxygen is provided. The catalyst composition includes a zeolite and a coprocessing material including an oxide of at least one of magnesium (Mg), vanadium (V), and cerium (Ce).

The invention provides a catalyst for heavy oil methane modification and a preparation method and application thereof, and belongs to the technical field of catalyst manufacturing. The preparation method of the catalyst for heavy oil methane modification comprises the following steps: S1, dissolving a zinc salt, a silver salt, a gallium salt, a nickel salt, citric acid and ethylene glycol in water, and mixing to obtain a mixed solution; wherein the molar ratio of the zinc element to the silver element to the gallium element to the nickel element is x: (1-x): y: (1-y), x is more than or equal to 0.01 and less than or equal to 0.99, and y is more than or equal to 0.01 and less than or equal to 0.99; and S2, carrying out dipping treatment on the carrier by adopting the mixed solution, and sequentially carrying out aging treatment, drying treatment and calcining treatment on the carrier subjected to dipping treatment to obtain the catalyst. The catalyst prepared by the method has a relatively good heavy oil methane modification effect, namely relatively good desulfurization and denitrification effects and relatively high liquid phase yield.

The invention discloses a method for removing sulfur-containing compounds in a crude oil-prepared cracked gas C3 fraction. The method comprises the following steps: contacting the crude oil-prepared cracked gas C3 fraction with a supported desulfurizer, wherein the load type desulfurizing agent comprises a carrier and a main active component loaded on the carrier; the main active component comprises alkali metal and / or alkaline earth metal; the carrier comprises elementary substances Ag, Ag2O, elementary substances Re and ReOx; reOx is a mixture of a plurality of Re oxides, x = n / 2, and n is 4, 6 or 7; the molar content of the elementary substance Re accounts for 30-45% of the total molar weight of Re in the carrier. The method provided by the invention can effectively remove low-carbon thioether and / or low-carbon mercaptan in the C3 fraction of the crude oil-prepared pyrolysis gas, has the advantages of low removal temperature, simple process, no additional reaction, no influence on downstream hydrogenation and separation processes, and energy consumption saving, and the desulfurizer can be repeatedly regenerated and used, and has long-period stable operation capability.

A liquid treatment composition for remediating and removing mercaptans, H2S and other sulfur based contaminants from contaminated hydrocarbon liquids, the treatment composition consisting essentially of a carrier solvent and at least one alkoxide compound. The liquid treatment composition may contain no terpene. Further, the liquid treatment composition may include water. The at least one alkoxide compound includes at least one of sodium methoxide and sodium ethoxide.

The application relates to the technical field of desulfurizers, and particularly discloses a rare earth metal oxide desulfurizer and a preparation method thereof. The preparation method comprises the following steps: S1: dissolving cerium salt, lanthanum salt and glucose in water to obtain solution A; S2: impregnating pre-calcined gamma-Al2O3 with the solution A, drying, calcining at 300-400 DEG C for 2-4 hours, cooling, and obtaining a loaded substance A; S3: dissolving copper salt, nickel salt and citric acid in water to obtain solution B; S4: impregnating the loaded substance A with the solution B, drying, calcining at 450-550 DEG C for 2-4 hours, cooling, and obtaining a loaded substance B; and S5: placing the loaded substance B in a reducing atmosphere, heating to 300-400 DEG C, keeping for 2-3 hours, cooling, and obtaining the rare earth metal oxide desulfurizer. The rare earth metal oxide desulfurizer prepared by the application has relatively high desulfurization efficiency and octane value RON retention rate.

An asphaltene adsorbent media, its method of preparation and a process of removing asphaltenes from hydrocarbon streams are provided. The asphaltene adsorbent media can include activated carbon (AC), metal oxide and clay as the main ingredients and be installed upstream of a processing vessel or located within processing vessels such as a fixed bed reactor. The adsorbent media can be used to remove asphaltenes contained in hydrocarbon fluids within refineries for various processing units, chemical operations, and bio-operations.

The invention discloses a metal-doped aluminum oxide supported alkaline catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and an alkaline component supported on the carrier, the carrier contains Al2O3 (aluminum oxide), AgxOy (silver oxide) and RemOn (iron oxide); agxOy is selected from one or more of elemental Ag and Ag oxide; remOn is selected from one or more of elemental Re and Re oxides; the alkaline component is selected from one or more of alkali metal, alkaline earth metal and organic alkaline compounds. According to the present invention, the catalyst carrier contains Al2O3, AgxOy and RemOn, and through the synergistic effect of the AgxOy and the RemOn in different forms, the loaded alkaline component and the optional modification component, the performance of the catalyst is significantly improved, such that the catalyst has the good catalytic performance, can achieve the adsorption removal and refining of different organic sulfur and inorganic sulfide under the low temperature condition, and has the good industrial application prospect. In addition, the catalyst can be regenerated repeatedly, and the preparation method of the catalyst is simple and easy to implement and convenient for industrial production.

The invention discloses a device for preparing aromatic hydrocarbon by directional conversion of tar, and belongs to the technical field of tar conversion, the device comprises a conversion box and an outer box, the top of the right side of the conversion box is communicated with a gas outlet pipe, the surface of the gas outlet pipe is provided with a one-way gas outlet valve, an inner cavity of the outer box is provided with an inner box, and the bottom of the inner cavity of the inner box is movably connected with a collection box. A first motor drives a first rotating rod to rotate, the first rotating rod drives a spiral stirring blade to rotate, tar and a NiWgammaAl2O3 catalyst are stirred through the spiral stirring blade, the uniform mixing effect is achieved, the characteristics of the NiWgammaAl2O3 catalyst are utilized, sulfur and nitrogen in the tar can be converted into easy-to-remove forms, and the tar and the NiWgammaAl2O3 catalyst are mixed uniformly. The separated tar is conveyed into the multi-stage filter box through a first oil guide pipe, when the tar makes contact with a filter membrane plate, solid impurities in the tar are filtered through the filter membrane plate, the tar is conveyed into an inner cavity of the conversion box through a second oil guide pipe, and therefore the filtering purpose is achieved.

Provided is a method for removing chlorine from a waste plastic. The method includes a) reacting a waste plastic with a neutralizing agent; and b) reacting the product of step a) with a copper compound. 95% by weight or more of chlorine is removed based on the total weight of the waste plastic.

Disclosed is a method for purifying a composition containing a plastic pyrolysis oil, which method comprises treating with a strong base in the presence of an alcohol. The method is useful for reducing the concentration of heteroelements in said composition with a view to making it compatible for introduction as feedstock in conversion methods such as steam cracking, fluid catalytic cracking, catalytic hydrogenation or hydrocracking.

Embodiments of the present disclosure provide a method for producing waste plastic pyrolysis oil with reduced chlorine, the method including a first operation of charging a waste plastic raw material and an accelerator containing char into a reactor; a second operation of pyrolyzing the waste plastic raw material in the reactor and recovering pyrolysis oil; and a third operation of recovering the accelerator from the reactor.

The present invention belongs to the field of dechlorination technology, and specifically relates to a liquid-phase dechlorinating agent, a preparation method thereof, and an application thereof. The liquid-phase dechlorinating agent provided by the present invention comprises the following raw material components in parts by weight: 10-70 parts of a mesoporous molecular sieve; 1-20 parts of an alkali metal compound; 10-30 parts of an active ingredient; 0.1-5 parts of a quaternary ammonium salt compound; and 10-30 parts of a binder. The mesoporous molecular sieve has a silicon-aluminum molar ratio of (10-100):1 and a specific surface area of ​​500-1000 m 2 / g, with a pore size of 2-10nm. The dechlorination agent formed by the interaction of a specific high silicon-aluminum ratio mesoporous molecular sieve, an alkali metal compound, an active component, a quaternary ammonium salt compound, and a binder can simultaneously and efficiently remove organic chlorine and inorganic chlorine.

The present invention discloses a propylene-rich material flow desulfurization method, which comprises: in a liquid phase fixed bed reactor, contacting a propylene-rich material flow with a desulfurization catalyst, and carrying out desulfurization treatment, wherein the desulfurization catalyst contains Al2O3, Na, Mg, Ag and rare earth metal; and (2) carrying out regeneration treatment on the used desulfurization catalyst by using propane containing 5-10vol% of hydrogen as regeneration gas. According to the method disclosed by the invention, Na-Mg-Ag-rare earth metal-Al2O3 is adopted as a desulfurization catalyst, so that the desulfurization capacity is good, sulfur-containing compounds in the propylene-rich material flow prepared by directly cracking crude oil can be effectively removed, the use temperature is low, additional reaction is not introduced, and downstream hydrogenation and separation processes are not influenced; and the desulfurization catalyst is repeatedly regenerated under the condition that hydrogen and propane are used as media.

The invention discloses an aromatic hydrocarbon refining agent as well as a preparation method and application thereof. The refining agent comprises a composite metal oxide and a solid superacid, the metal comprises a divalent metal A and a trivalent metal B, and the atom molar ratio of A / (A + B) is 0.45-0.81; the preparation method of the refining agent comprises the following steps: reacting a solution containing metal A and metal B with a mixed solution of sodium hydroxide and sodium carbonate, further reacting and roasting the obtained mixture to obtain a composite metal layered oxide I, and sequentially carrying out strong alkali treatment and acid treatment to obtain a composite metal oxide II; then loading solid superacid to obtain an aromatic hydrocarbon refining agent intermediate; and finally, carrying out ammonium exchange and roasting to obtain the aromatic refining agent. The refining agent prepared by the invention can effectively solve the problem of poor dispersion of superacid, the reaction activity of superacid is improved, and the service life of the refining agent is greatly prolonged.

The present invention is a method for removing sulfur from hydrocarbon feedstocks and for performing hydrogenation reactions in sulfur-contaminated feedstocks, including the hydrogenation of naphthalene in the presence of sulfur compounds, using catalysts or adsorbents comprising metal oxide nanowires decorated with reduced catalytically-active metal particles. In an exemplary embodiment, the adsorbent comprises zinc oxide nanowires decorated with catalytically-active metals selected from nickel, cobalt, molybdenum, platinum, palladium, copper, oxides thereof, alloys thereof, and combinations thereof. In some embodiments, the sulfur is removed through a desulfurization process without an external hydrogen supply. The process is effective for the removal of sulfur from diesel fuels and liquid fuel streams, and for deep desulfurization of natural gas streams. The process is also effective for the selective hydrogenation of naphthalene to tetralin in the presence of sulfur compounds.

A method for removing contaminants from a waste plastics pyrolysis stream containing the contaminants by introducing an effective amount of an additive thereto and separating the contaminants from the stream by a physical process, where suitable additives include, but are not necessarily limited to, crude oil demulsifiers, crude oil wax control additives, crude oil pour point reducers, dispersants / antifoulants, nanoscale metallic oxides, overbased metal oxide carbonates, and combinations thereof.

A method and kit for inhibiting microbial proliferation in a fuel container are disclosed. The method involves introducing antimicrobial particles designed to be trapped at the fuel-water interface by interfacial tension, thereby concentrating antimicrobial agents at a primary site of microbial growth. These particles release antimicrobial ions into the water phase, creating a growth inhibition zone that can extend into the sludge zone. A kit is also provided, including at least two separate containers of particles being a denser type that settles and remains at the tank bottom and a lighter type that settles but is subsequently lifted to the interface upon water accumulation.

A method and kit for inhibiting microbial proliferation in a fuel container are disclosed. The method involves introducing antimicrobial particles designed to be trapped at the fuel-water interface by interfacial tension, thereby concentrating antimicrobial agents at a primary site of microbial growth. These particles release antimicrobial ions into the water phase, creating a growth inhibition zone that can extend into the sludge zone. A kit is also provided, including at least two separate containers of particles being a denser type that settles and remains at the tank bottom and a lighter type that settles but is subsequently lifted to the interface upon water accumulation.

The invention relates to the technical field of reformate dechlorinating agents and preparation processes, in particular to a calcium-based reformate dechlorinating agent prepared from sodium metaaluminate and a preparation method and application of the calcium-based reformate dechlorinating agent. According to the calcium-based reformate dechlorinating agent, sodium metaaluminate and soluble calcium salt are subjected to a co-precipitation reaction, active components are directly introduced, and the calcium-based reformate dechlorinating agent is obtained; aging, filtering, drying and roasting to obtain calcium-containing aluminum oxide powder, mixing the calcium-containing aluminum oxide powder with a bentonite binder, kneading, extruding into strips, drying and roasting to obtain the calcium-containing aluminum oxide composite material. The calcium-based dechlorinating agent for reformed oil is stable in structure, uniform in active center distribution, high in pore volume and specific surface area, and high in dechlorinating efficiency and dechlorinating precision in the liquid phase dechlorinating process; according to the calcium-based reformate dechlorinating agent disclosed by the invention, the production process steps are more simplified, the production cost is effectively reduced, and industrial production is easy to realize.

A treatment formulation for removing target impurities from a system can include a synergistic combination of a polymer and a nanoparticle compound. In one aspect, a treatment formulation includes a contaminant removal agent and a solvent. The contaminant removal agent of one embodiment includes at least one nanoparticle compound, and suitable nanoparticle compounds are nitrides, oxide nanoparticles, clays, and carbon-based nanoparticles. In another embodiment, the contaminant removal agent includes at least one polymer. Suitable polymers are sulfonated PEEK polymer, sodium carboxy cellulose, poly(ethylene glycol) diamine, polyvinyl pyrrolidone functionalized with sodium salt of chloroacetic acid, polyvinyl pyrrolidone functionalized with propyl sulfonate, polyethyleneimine, 4-aminonapthalenesulfonic acid, 3-(1-pyridino)-1-propanesulfonate, and octadecylphosphonic acid. In another aspect, methods for removing a target impurity from a fluid involve identifying the target impurity, providing a contaminant removal agent with at least one polymer and at least one nanoparticle compound, and contacting the fluid with the contaminant removal agent.

The invention discloses a method for removing sulfur-containing compounds in a C2 fraction, which comprises the following steps: (1) in an isothermal bed and / or adiabatic bed reactor, contacting a C2 fraction material with a desulfurization catalyst for desulfurization treatment; wherein the desulfurization catalyst contains K, Mg, Ag, rare earth metal, Al2O3 and Al (OH) 3; and (2) carrying out reduction regeneration treatment on the used desulfurization catalyst by using circulating ethane containing 5-10vol% of hydrogen as regeneration gas. The method provided by the invention can effectively remove the sulfur-containing compounds in the C2 fraction prepared by cracking the crude oil, and has the advantages of low use temperature and no introduction of additional reaction; and circulating ethane containing 5-10vol% of hydrogen can be adopted as a medium to regenerate the desulfurization catalyst and remove sulfides adsorbed on the catalyst, and the sulfides enter a cracking furnace along with the circulating ethane to react to generate hydrogen sulfide which is then absorbed by an alkaline tower, so that the method is green and environment-friendly and does not cause pollution to the atmosphere.

The invention relates to a dechlorination catalyst and a preparation method thereof, and a dechlorination method of a chlorine-containing oil product, the dechlorination catalyst comprises a first carrier, a second carrier and a binder, the first carrier is activated carbon, the second carrier is a manganese oxide molecular sieve, the first carrier is loaded with an active component, and the binder is a binder. The active component comprises one or more of iron oxide, zinc oxide, aluminum oxide and copper oxide. The dechlorination catalyst disclosed by the invention has good selective catalytic conversion performance, can significantly improve the dechlorination effect on oil products, and realizes efficient dechlorination under a non-hydrogen condition.

To provide a true circular solution for recycled waste plastics.SOLUTION: There are provided processes and systems for producing raw materials and for producing truly circular polymers. The systems and processes may include processing a waste-derived hydrocarbon stream, such as a waste plastic pyrolysis oil, in a first reactor system with a catalyst mixture, and processing a fossil-based feedstock in a second reactor system with the catalyst mixture. The catalyst mixture may be supplied to each of the first and second reactor systems from a common catalyst regenerator. An effluent comprising fossil-based hydrocarbon products may be recovered from the second reactor system, and an effluent comprising waste-derived hydrocarbon products may be recovered from the first reactor system. Following separations, spent catalyst from each of the first and second reactor systems may be returned to the common catalyst regenerator.SELECTED DRAWING: Figure 1

The application discloses an aromatic hydrocarbon refining agent and a preparation method and application thereof. The refining agent comprises a composite metal oxide and a solid super strong acid, the metal comprises divalent metal A and trivalent metal B, wherein the atomic molar ratio of A / (A+B) is 0.45-0.81; the preparation method of the refining agent comprises the following steps: a solution containing metal A and metal B is reacted with a mixed solution of sodium hydroxide and sodium carbonate, the obtained mixture is further reacted and calcined to obtain a composite metal layered oxide I, the composite metal layered oxide I is sequentially treated by a strong base and an acid to obtain a composite metal oxide II; then the solid super strong acid is loaded to obtain an aromatic hydrocarbon refining agent intermediate; finally, ammonium exchange and calcination are carried out to obtain the aromatic hydrocarbon refining agent. The prepared refining agent can solve the problem of poor dispersion of the super strong acid, improve the reaction activity of the super strong acid, and greatly prolong the service life of the refining agent.