28results about "Refining with metal oxides" patented technology

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.

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 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.

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.

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 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.

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.

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.

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.

The invention discloses a method for removing sulfur-containing compounds in C4 fractions, which comprises the following steps: in a liquid phase fixed bed reactor loaded with a desulfurization catalyst, removing the sulfur-containing compounds in the C4 fractions, then carrying out regeneration treatment on the desulfurization catalyst by using circulating propane; wherein the desulfurization catalyst contains Al2O3, Na, Mg, Ag and rare earth metal. The desulfurization catalyst Na-Mg-Ag-rare earth metal-Al2O3 adopted by the invention has good desulfurization capacity, can be used for removing trace sulfur-containing compounds in the C4 fraction obtained by direct cracking of crude oil, realizes efficient sulfur removal and refining under a normal low-temperature liquid phase condition, and does not cause other reactions of the C4 fraction; and under the condition that propane is used as a medium, the desulfurization catalyst can be repeatedly regenerated and used, and the desulfurization performance attenuation is extremely small.

The invention discloses a desulfurization method of a raffinate C4 material, which comprises the following steps of: (1) desulfurizing a fresh raffinate C4 material in a liquid phase form through a one-section or two-section desulfurization reactor, and reducing the total sulfur molar content of sulfur-containing compounds in the desulfurized raffinate C4 material to be less than 1ppm (parts per million) in terms of sulfur element; wherein the desulfurization reactor is an isothermal bed and / or adiabatic bed reactor loaded with a supported alkali metal and / or alkaline earth metal catalyst; (2) butadiene in the desulfurized raffinate C4 material is subjected to a hydrogenation reaction, and a part of a hydrogenation product is returned to an inlet of the desulfurization reactor and mixed with the fresh raffinate C4 material; and then carrying out the steps (1) and (2) on the mixed materials. The method provided by the invention can effectively improve the removal and refining capability of active components on sulfur and prolong the service cycle.

Disclosed in the present invention are a metal-doped alumina supported basic catalyst, and a preparation method therefor and a use thereof. The catalyst comprises a support and a basic component supported on the support. The support comprises Al2O3, AgxOy and RemOn. By regulating one or more of the following parameters or conditions: the content and / or valence state of AgxOy and RemOn in the support, and the synergistic effect thereof with Al2O3 in the support, the supported basic component, and an optional modified component, the performance of the catalyst is significantly improved, so that the catalyst has better desulfurization efficiency and operation period, and can achieve adsorption removal and refining of different organic and inorganic sulfides under low temperature conditions. Moreover, the catalyst can be regenerated repeatedly, and the preparation method therefor is simple and easy to implement, and is suitable for industrial production.

The invention relates to a plastic oil desiliconization agent, a preparation method thereof and a plastic oil desiliconization method, the desiliconization agent comprises 5-95 wt% of magnesium oxide and 5-95 wt% of aluminum oxide on the basis of the dry basis weight of the desiliconization agent, and at least part of magnesium oxide and aluminum oxide form magnesium aluminate spinel, the weight of the magnesium aluminate spinel accounts for more than 60% of the total weight of the magnesium oxide and the aluminum oxide; the bulk density of the desiliconizing agent is 0.5 to 0.85 g / cm < 3 >. The desiliconization agent disclosed by the invention has a good desiliconization effect.

The invention discloses a pyrolysis gas C3 fraction desulfurization method, which comprises: carrying out desulfurization on a pyrolysis gas C3 fraction in an isothermal bed and / or adiabatic bed reactor loaded with a desulfurization agent, wherein the desulfurizing agent comprises a carrier and a main active component loaded on the carrier; the carrier is prepared from Al2O3, Al (OH) 3, Ag, Ag2O, Re and ReOx; reOx is a mixture of a plurality of Re oxides, x = n / 2, and n is 4, 6 or 7; the main active component comprises alkali metal and / or alkaline earth metal. The desulfurization method disclosed by the invention can effectively remove hydrogen sulfide, carbonyl sulfide and carbon disulfide in the C3 fraction of the cracked gas prepared from the crude oil, is low in use temperature, and does not cause additional reaction; and the desulfurizer can be repeatedly regenerated and used, and has long-period stable operation capability.

The present invention provides a method for producing waste plastic pyrolysis oil, comprising the steps of: (S1) supplying waste plastic raw material and a process oil stream to a first melting tank and mixing them to obtain a primary molten material; (S2) passing the primary molten material through a first filter to remove unmelted solid material; (S3) supplying the primary molten material from which the unmelted solid material has been removed to a second melting tank and heating it to obtain a secondary molten material; (S4) pyrolyzing the secondary molten material to obtain a pyrolysis product comprising a gas phase fraction and a liquid phase fraction; and (S5) supplying the pyrolysis product to a distillation column and purifying it.

The application relates to the technical field of dechlorination agents, in particular to a dechlorination agent and a preparation method thereof.The preparation method of the dechlorination agent comprises the following steps: 1) uniformly mixing quaternary ammonium salt and organic amine, then uniformly mixing with silicate, reacting for 2-6 hours, performing solid-liquid separation, washing the solid, and drying; 2) calcining the dried solid obtained in the step 1) at 550-650 DEG C for 5-10 hours, cooling, and obtaining a carrier; 3) uniformly mixing the carrier obtained in the step 2) with a calcium source and a zinc source in water, adjusting the pH value to 10-12, reacting, standing, performing 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, thereby obtaining the dechlorination agent. The dechlorination agent prepared by the application has uniform pore diameter, high chlorine penetration capacity, and can effectively reduce the loss of active ingredients.

Systems and methods are presented for performing a hydrolytic dechlorination of pyrolysis oil using a basic adsorbent to produce an upgraded pyrolysis oil having at least a lower organic chloride content. An example method includes the steps of performing a hydrolytic dechlorination of pyrolysis oil containing one or more organic chloride species by: introducing the pyrolysis oil into a reactor, the pyrolysis oil having a temperature ranging from about 100 °C to about 300 °C; and contacting the pyrolysis oil with a basic adsorbent within the reactor under autogenic pressure and in the absence of hydrogen to hydrolyze the one or more organic chloride species of the pyrolysis oil and yield an upgraded pyrolysis oil having a lower organic chloride content.

The present invention provides a method of preparing pyrolysis oil from waste plastics, the method including: (S1) feeding a waste plastic raw material and a process oil stream to a first melting tank and mixing the waste plastic raw material and the process oil stream to obtain a primary melt; (S2) passing the primary melt through a first filter to remove a non-melted solid material; (S3) feeding the primary melt from which the non-melted solid material is removed to a second melting tank and increasing a temperature of the primary melt to obtain a secondary melt; (S4) feeding the secondary melt to a pyrolysis reactor and after pyrolysis discharging a gaseous upper stream and a liquid lower stream; and (S5) condensing the gaseous upper stream discharged from the pyrolysis reactor and then feeding the gaseous upper stream condensed to a distillation column and refining the gaseous upper stream condensed.

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 carrier, the carrier is loaded with an auxiliary agent and an active component, the auxiliary agent is a manganese oxide, and the active component comprises one or more of an iron oxide, a zinc oxide, an aluminum oxide and a copper oxide. The dechlorination catalyst disclosed by the invention has good adsorption performance and selective catalytic conversion performance, the dechlorination effect on oil products can be remarkably improved, and efficient dechlorination is realized under a non-hydrogen condition.

The invention discloses a Fe / Ni co-doped W18O49 oxidative desulfurization catalyst as well as a preparation method and application thereof, and belongs to the technical field of oil product oxidative desulfurization catalytic materials. The preparation method comprises the following steps: dissolving a tungsten source in an alcohol solvent to obtain a solution A; adding an iron source and a nickel source into the solution A, and stirring to obtain a precursor mixed solution; and carrying out solvothermal reaction, suction filtration, washing and drying to obtain the Fe / Ni co-doped W18O49 oxidative desulfurization catalyst. The molar ratio of the Fe element in the iron source to the Ni element in the nickel source is (1: 0.1)-(1: 0.9), under the specific molar ratio, the Fe element in the iron source and the Ni element in the nickel source generate a synergistic catalytic effect in a W18O49 matrix, the electronic structure of the catalyst is optimized, the activation efficiency of the active site of the catalyst on an oxidizing agent H2O2 is improved, the adsorption capacity on sulfide molecules such as DBT is also enhanced, and the catalytic activity of the catalyst is improved. The oxidation reaction kinetics is accelerated, and the desulfurization performance is excellent.

The invention relates to a dechlorinating agent for plastic oil dechlorination, a preparation method of the dechlorinating agent and a plastic oil dechlorination method, and the dechlorinating agent contains 5-50 wt% of calcium oxide, 4-60 wt% of magnesium oxide, 5-90 wt% of aluminum oxide and 0.5-15 wt% of a phosphorus-aluminum auxiliary agent on the basis of the dry base weight of the dechlorinating agent; the phosphorus-aluminum auxiliary agent does not contain chlorine element, and the weight ratio of phosphorus element to aluminum element is (1-5): 1. The dechlorinating agent disclosed by the invention has a relatively excellent dechlorinating effect.

The invention relates to the technical field of desulfurizing agents, and particularly discloses a rare earth metal oxide desulfurizing agent and a preparation method thereof. The preparation method comprises the following steps: S1, dissolving cerium salt, lanthanum salt and glucose in water to obtain a solution A; s2, pre-roasted gamma-Al2O3 and the solution A are soaked, dried, roasted for 2-4 h at the temperature of 300-400 DEG C and cooled, and a load A is obtained; s3, copper salt, nickel salt and citric acid are dissolved in water, and a solution B is obtained; s4, impregnating the load A and the solution B, drying, roasting at 450-550 DEG C for 2-4 hours, and cooling to obtain a load B; and S5, placing the load B in a reducing atmosphere, heating to 300-400 DEG C, carrying out heat preservation for 2-3 hours, and cooling to obtain the rare earth metal oxide desulfurizer. The rare earth metal oxide desulfurizer prepared by the invention has relatively high desulfurization efficiency and octane number RON retention rate.

The invention discloses a method for removing organic sulfur in a C4 material. The removal method comprises the following steps: desulfurizing the C4 material in a liquid phase form through a one-section or two-section desulfurization reactor; wherein the desulfurization reactor is an isothermal bed reactor loaded with a supported catalyst; the supported catalyst comprises a carrier and a main active component supported on the carrier; the carrier is prepared from simple substances Re, RemOn, AgxOy and Al2O3; remOn is selected from one or more of Re oxides, m is 1 and / or 2, and n is selected from at least one positive integer of 1-7; the main active component comprises alkali metal and / or alkaline earth metal. According to the present invention, with the synergistic effect of Ag and Re, the loaded alkali metal and / or alkaline earth metal catalyst can achieve efficient desulfurization and refining under the low temperature condition, the unnecessary reaction can be avoided, the downstream hydrogenation and separation process is not affected, the removal process is simple, and the energy consumption is reduced.

The invention belongs to the technical field of comprehensive utilization of resources and energy and chemical industry, and particularly relates to a composite metal oxide catalyst and a preparation method thereof and application of the composite metal oxide catalyst in catalysis of deacidification and recarburization of biomass pyrolytic oil. And drying, calcining, transferring into a tubular furnace, introducing a hydrogen atmosphere, and carrying out reduction treatment to obtain the composite metal oxide catalyst with the FeOx-MOx heterostructure. The invention provides a composite metal oxide catalyst which is used for ketonization of single carboxylic acid and decarboxylation ketonization of biomass pyrolytic oil and has high activity and ketonization selectivity, the ketonization yields of acetic acid and propionic acid respectively reach 90.75% and 89.52%, the removal rate of organic acid substances in the pyrolytic oil reaches 87.72%, and meanwhile, the content of ketone substances is increased by 61.35%.