83results about "Refining with oxygen compounds" patented technology

The invention belongs to the technical field of metal organic framework materials, and particularly relates to a UiO-66 (Zr) material as well as a room-temperature preparation method and application thereof. According to the preparation method provided by the invention, the UiO-66 (Zr) material can be efficiently synthesized at room temperature through the specific raw material dosage and the catalyst, the high-temperature condition and the long-time reaction process in the traditional method are avoided, and the energy consumption and the production cost are reduced. Meanwhile, the preparation method provided by the invention is simple to operate, large-scale production is easy to realize, and powerful support is provided for wide application of UiO-66 (Zr). The UiO-66 (Zr) material provided by the invention can catalyze oxidative desulfurization of fuel oil, and has excellent catalytic activity.

The invention relates to the technical field of catalysts, in particular to an adsorption desulfurization catalyst and a preparation method thereof. The catalyst is prepared by compounding modified graphene and montmorillonite as a carrier, carrying out molecular modification on graphene oxide by adopting chloropropyltriethoxysilane and 2-dimethylaminoethyl phosphoric acid, efficiently compounding with montmorillonite K10, loading zinc and magnesium metals, and calcining under the protection of nitrogen. According to the method, the synergistic structure of graphene and montmorillonite is optimized, the specific surface area and the pore structure are remarkably improved, the metal ion dispersion and stable combination capacity is enhanced, meanwhile, through introduction of functional molecules, the adsorption activity of the catalyst to aromatic sulfide is improved, and loss of active components is inhibited. The prepared catalyst shows excellent desulfurization efficiency, cycling stability and durability, adapts to green and low-carbon chemical requirements, and has a good industrial application prospect.

The invention relates to the technical field of extraction, in particular to a phosphomolybdenum blue reactive extractant and a preparation method and application thereof. The preparation method of the phosphomolybdenum blue reaction type extraction agent comprises the following steps: mixing phosphomolybdic acid and a reducing agent, and reacting at 50-150 DEG C; the reducing agent comprises ethylene glycol and / or polyethylene glycol. The phosphomolybdenum blue reaction type extractant has the advantages that the preparation method is simple, the atom utilization rate is high, the extractant is environmentally friendly, the desulfurization rate is high when the extractant is used for diesel extraction-oxidation coupling ultra-deep desulfurization, the reaction system is simple, the reaction condition is mild, oil phase separation is convenient after reaction, and the oxidation product sulfone can be recycled.

The present invention provides a catalyst, preparation method and application thereof for achieving deep desulfurization with O2 as an oxidant at below 80°C, belonging to the cross-field of nanocatalysis and environmental protection technology. The catalyst is a composite material of CeOx-MoOy / TS-1 (x=1.5-2, y=2-3) with high oxygen vacancy concentration, a theoretical active metal loading of 2-6wt%, an oxygen vacancy content of 20-50%, and contains two metals, Mo and Ce, wherein Mo includes two valence states: Mo 4+ 、Mo 6+ , low-valent metal Mo accounts for 40-80% (atomic percentage) of all Mo, and Ce includes two valence states Ce 3+ 、Ce 4+ , low-valent metal Ce accounts for 20-60% (atomic percentage) of all Ce, and Ce / Mo (1:1-1:10) is adjusted to obtain the best ratio, and this catalyst has a better ability to adsorb oxygen and activate oxygen. The composite material prepared by the present invention is a spherical structure with a smooth surface, and the active metal is evenly distributed and highly dispersed. As a heterogeneous catalyst, it can achieve oxidative desulfurization with oxygen as an oxide at 80°C, and has excellent reusability.

The invention belongs to the technical field of extraction separation, and relates to a desulfurization extraction agent and a method for removing thiophene by using the desulfurization extraction agent. The preparation method comprises the following steps: loading a deep eutectic solvent onto graphite phase carbon nitride coated graphene oxide nano-microspheres by an impregnation method to obtain a composite material for removing thiophene, and then mixing and stirring the composite material, a thiophene n-octane solution and hydrogen peroxide for desulfurization. Oxidation desulfurization, adsorption desulfurization and extraction desulfurization are comprehensively used, the desulfurization efficiency is high, the operation condition is mild, and the method is environment-friendly.

A process is disclosed for removing sulfides from liquid fossil fuel comprising mixing the liquid fossil fuel with an oxidizer and catalyst to form a multiphase reaction medium and producing a fluid flow of the multiphase reaction medium. Ultra sound may be applied to the multiphase reaction medium to cause oxidation of sulfides in the liquid fossil fuel to sulfones; and extracting the sulfones to yield an organic phase and aqueous phase. The ultra sound is performed by generating vibrations parallel to the fluid flow of the multiphase reaction medium. The organic phase substantially consists of desulfurized fuel.

An aqueous treatment composition of crude oil and / or petroleum distillate for removing sulfur compounds from crude oil and / or petroleum distillate, and a treatment method using such a composition are disclosed. The composition has less than 0.5% by mass of a di- or tri-benzhydroxy compound, a strong base, less than 1% by mass of a divalent metal gluconate, the balance being water, and a pH of 9 or more. The treatment method includes the steps of adding the treatment composition to crude oil or petroleum distillate to form a mixture having 0.001% to 0.02% by mass of a di- or tri-benzhydroxy compound in the oil and 0.001% to 0.03% by mass of a divalent metal gluconate in the oil, and mixing them together.

The invention relates to the technical field of catalysts, in particular to an MOF (Metal Organic Framework)-based catalyst which consists of FeOOH and a metal organic framework UiO-66, a heat preservation jacket assembly is mounted on the outer side of the concentration tank; the steam generating device comprises a steam chamber; the catalyst shows remarkable catalytic performance in the catalytic oxidation desulfurization process, and research shows that sulfides in fuel oil can be effectively removed, and Fe species are introduced and can be effectively combined to a frame structure of UiO-66 to form a stable active site (Fe < 3 + >), so that the activity and stability of the catalyst are improved, and the catalyst is suitable for industrial production. The UiO-66 material has rich defect sites and a stable frame structure, so that the FeOOH / UiO-66 catalyst can provide a larger specific surface area and better porosity in a catalytic oxidation desulfurization reaction, the desulfurization efficiency is improved, the good reusability is achieved, the environmental pollution is reduced, the development trend of green chemistry is met, and the application prospect is wide. The FeOOH / UiO-66 catalyst can obviously reduce the production cost and improve the economic benefit in industrial application.

The present invention relates to a process for producing precursors of carbon materials particularly from medium and heavy aromatic oils by thermal oxidative polymerization reactions, so the invention belongs to the field of obtaining carbon precursors from different sources improving total carbon yield.

The present application relates to the technical field of fuel desulfurization, and particularly relates to a photo-thermal extraction catalytic oxidation desulfurization catalyst, a preparation method and application thereof. The raw material of the catalyst comprises [Mo6O 19 ](NC 18 H 36 )2, NH2-MIL-125(Ti) and g-C3N4, and the catalyst Mo6 / NH2-MIL-125(Ti) / g-C3N4 is prepared by using an evaporation solvent method, wherein the molar ratio of Ti in NH2-MIL-125(Ti) to Mo in [Mo6O 19 ](NC 18 H 36 )2 is 1:0.1-1.0. The evaporation solvent method used in the present application has simple preparation process, controllable morphology and high stability, and the prepared catalyst has excellent catalytic effect in a photo-thermal extraction catalytic oxidation desulfurization system, and can be widely used for industrial desulfurization of sulfur-containing fuels.

The invention relates to a process for treating biomass oil comprising: (a) a step of supplying biomass oil selected from biomass pyrolysis oil, biomass hydrothermal liquefaction oil, lignin oil, and mixtures thereof; (b) a step of oxidizing the biomass oil supplied in step (a) in the presence of an oxidizing agent at a temperature of 90 °C or lower, this step producing an effluent containing at least partially oxidized biomass oil and water; (c) a step of distilling the effluent from step (b) under reduced pressure, separating a distillate containing water from a residue under vacuum to form a stabilized biomass oil with a reduced water content. Figure 1

The invention relates to the field of oxidative desulfurization of oil and sulfur-containing liquid hydrocarbon fuels (including diesel fuel) and can be used to reduce harmful emissions and exhausts (in the form of sulphur oxide and carbon monoxide - SO2 and CO) of oil refineries, as well as various industrial enterprises (including energy), facilities and engines using hydrocarbon fuels. Method of oxidative desulfurization of oil and liquid hydrocarbon fuel and reducing harmful emissions of sulfur oxides and carbon provides a process of oxidation in tanks or pipelines by ozone (O3) or ozone-containing gases, in which sulfur oxides (SO2 and SO), without releasing them into the atmosphere, mix in a closed vessel or pipeline with carbon monoxide (CO) and by means of chemical reactions of sulfur monoxide decomposition (2SO↑ → SO2↑+S↓) and sulfur recovery (SO2↑ + 2CO↑ → S↓ + 2CO2↑) elemental sulfur (S) is extracted from oil or liquid hydrocarbon fuel and carbon monoxide (CO) is converted into its dioxide (CO2). The oxidation, also decomposition and recovery reactions are carried out one-step or sequentially, in the presence of oxidation-recovery group catalysts corresponding to these reactions, such as tert-Butyl hydroperoxide (C₄H₁₀O₂). Ozonized atmospheric air is used as ozone-containing gas.

Aqueous treatment compositions for crude oil and / or petroleum distillates to remove sulfur compounds therefrom and treatment methods using such compositions are disclosed. The composition has less than 0.5% wt / wt di- or tri-benzohydroxy compound, a strong base, less than 1% wt / wt divalent metal gluconate, a balance of water, and a pH that is 9 or greater. The treatment method includes adding said treatment composition to crude oil or a petroleum distillate to form a mixture having 0.001% to 0.02% wt di- or tri-benzohydroxy compound / wt oil and 0.001% to 0.03% wt divalent metal gluconate / wt oil and mixing the same together.

The present invention is directed to a method of selectively reacting and removing disulfides and reducing corrosivity in petroleum matrixes with an acid wash composition.

The invention discloses a molybdenum-doped cobaltosic oxide regulated bimetallic oxide catalyst with high-activity lattice oxygen as well as a preparation method and catalytic oxidation desulfurization application thereof. The structural formula of the molybdenum-doped cobaltosic oxide regulated and controlled bimetallic oxide catalyst with high-activity lattice oxygen is CoMoO4. The molybdenum-doped cobaltosic oxide regulated and controlled bimetallic oxide catalyst with high-activity lattice oxygen can be used for catalytic oxidation desulfurization, and the specific method comprises the following steps: mixing an oil product to be desulfurized and the molybdenum-doped cobaltosic oxide regulated and controlled bimetallic oxide catalyst with high-activity lattice oxygen, and carrying out ultrasonic treatment; and then air is introduced in a bubbling manner for reaction, so that deep desulfurization of the oil product to be detected is realized. The catalyst disclosed by the invention can realize an optimal catalytic effect without stirring in an environment with extremely low catalyst dosage, and the efficiency of catalytic oxidation desulfurization is remarkably improved; meanwhile, the catalyst is easy to recover and can be recycled, so that the use cost is greatly reduced.

The invention relates to a preparation method and application of a hydroxylated boron nitride loaded high-entropy metal catalyst, and belongs to the technical field of fuel green refining and clean fuels, the preparation method comprises the following steps: S1, boron nitride powder is treated by a hydrogen peroxide solution and subjected to a high-temperature hydrothermal reaction, surface hydroxylation modification is realized, and a hydroxyl functional group is introduced; s2, the hydroxylated boron nitride is in contact with a high-entropy precursor solution composed of at least five different metal salts, and a uniformly-distributed multi-metal compound precursor is formed; and S3, calcining the precursor, and converting the precursor into superfine high-entropy metal nanoparticles dispersed on the surface of boron nitride to obtain the composite catalyst. According to the preparation method and application of the hydroxylated boron nitride loaded high-entropy metal catalyst, the composite catalyst prepared by adopting the preparation method can realize deep desulfurization and denitrification at 110-130 DEG C in an air or oxygen atmosphere, high-temperature and high-pressure conditions are not needed, and the advantage of high catalytic efficiency under a mild condition is achieved.

The present invention belongs to the technical field of composite materials and relates to a preparation method of a molybdenum-tantalum bimetallic MOF-derived MoO2-Ta2O5 / C composite catalyst, which includes: weighing tantalum pentachloride, 4,4'-bipyridine and block polyether F127 and adding them into deionized water. After ultrasonic dispersion, sodium molybdate dihydrate is added, and the mixture is stirred and heated under reflux in a constant-temperature oil bath; after cooling to room temperature, the substances obtained from the reaction are centrifuged and washed with deionized water and absolute ethanol respectively, and the obtained precursor is dried and ground; it is transferred to a magnetic ark and calcined in a tubular furnace under a nitrogen atmosphere at a programmed temperature of 300-1000 °C for 1-6 h to obtain the product. The present invention also discloses the application of the prepared catalyst in the field of catalytic oxidative desulfurization. By combining thermal reflux and high-temperature calcination, the present invention constructs a bimetallic active center, which has the advantages of good selectivity, high thermal stability and recyclability. Under mild conditions, with O2 as the oxidant, the sulfur-containing compound 4,6-DMDBT can be ultra-deeply removed within 4 h, and the desulfurization rate is 100%.

The present disclosure relates to a process for recovering aromatic compounds from a hydrocarbon feed comprising a mixture of aromatic and non-aromatic compounds, particularly from C5-C11 hydrocarbon fraction from different refinery streams. The recovery of the aromatic compounds comprises a solvent based extractive distillation, and separation of the aromatic compounds and the solvent. The process of the present disclosure can effectively separate aromatic and non-aromatic compounds and increases the overall aromatic yield in naphtha reforming process. Further, the process maximizes the recovery of the aromatic compounds in the C5-C11 hydrocarbon feed.

A method of preparing graphene from coal can include thermally processing raw coal and, after the coal has been at least partially cooled from thermal processing, forming reduced graphene oxide from the coal.

One exemplary embodiment can be a process for oxidizing one or more thiol compounds from an alkaline stream. The process may include passing a mixed stream having the alkaline stream to a vessel having an oxidation section, a separation section and a vent gas section. Often, the oxidation section includes a body containing one or more packing elements. The process can further include passing an oxidized alkaline stream to the separation section containing a first chamber and a second chamber. Usually, the first chamber contains a coated mesh and packing. The two sections further form a neck contains a packing, a distributor, and a mesh.

The invention belongs to the technical field of desulfurization catalysts, and particularly relates to an oxygen vacancy-rich molybdenum-based desulfurization catalyst as well as a preparation method and application thereof. According to the molybdenum-based desulfurization catalyst rich in oxygen vacancies, cerium dioxide is used as a carrier, molybdenum trioxide is used as an active component, and the carrier and the active component are connected through Mo-O-Ce bonds to form a uniform cerium-molybdenum composite oxide MoO3 / CeO2. The catalyst comprises the following components in parts by weight: 0.79 to 0.81 part of cerium dioxide and 0.15 to 0.35 part of molybdenum trioxide. The oxygen vacancy enrichment means that the relative content of oxygen vacancies is at. 25%-35 at.%. According to the molybdenum-based desulfurization catalyst rich in oxygen vacancies, the 35-min desulfurization rate can reach 100% under the conditions that the temperature is 60 DEG C and the oxygen-sulfur ratio is 5. The desulfurization rate of the molybdenum-based desulfurization catalyst rich in oxygen vacancies can reach up to 90.63% after the reaction is performed for 1 h and 9 times of circulation.

To provide a desulfurization method capable of easily removing elemental sulfur from a liquid fuel containing a sulfur-containing compound without removing useful hydrocarbons in the compound.SOLUTION: A desulfurization method of a liquid fuel comprises: irradiating the liquid fuel containing a sulfur-containing compound with ultraviolet light having a wavelength of 100 to 350 nm; precipitating elemental sulfur; and removing the precipitated elemental sulfur.SELECTED DRAWING: Figure 2

The present invention relates to a method for oxydesulfurization (oxidative desulfurization) of at least one heavy fuel oil using a catalyst in the form of platelets having an ordered two-dimensional hexagonal mesoporous structure, as well as to the use of such a catalyst in the form of platelets having an ordered two-dimensional hexagonal mesoporous structure, for oxydesulfurization of at least one heavy fuel oil.

The invention provides a porous liquid based on a supramolecular deep-eutectic solvent and a preparation method and application thereof, the preparation method comprises the following steps: mixing methylated beta-cyclodextrin and levulinic acid, and then carrying out stirring reaction to obtain the supramolecular deep-eutectic solvent; the preparation method comprises the following steps: adding H2O2 into a phosphotungstic acid aqueous solution, stirring for reaction, adding a tetrabutylammonium chloride aqueous solution, and washing and drying an obtained solid to prepare peroxyphosphotungstic acid; the preparation method comprises the following steps: dissolving peroxy phosphotungstic acid and Zn (NO3) 2.6 H2O in methanol, adding a methanol solution containing 2-methylimidazole, stirring at room temperature to react, washing an obtained white solid, and drying to obtain peroxy phosphotungstic acid packaged ZIF-8; and mixing the ZIF-8 packaged with peroxy phosphotungstic acid with the supramolecular deep eutectic solvent, and uniformly dispersing through stirring and ultrasonic treatment to obtain the porous liquid.

A process for the cracking of a carbon-containing feedstock to produce olefins, aromatics and / or aliphatic includes contacting, in a reactor system, the carbon-containing feedstock with oxygen gas in the presence of a molten salt matrix consisting of a eutectic mixture of alkali metal carbonates, alkali metal hydroxides, alkali metal nitrates, alkali metal halides, alkaline earth metal carbonates, alkaline earth metal hydroxides, alkali earth nitrates, alkaline earth metal halides, rare earth metal carbonates, transition metal carbonates, transition metal hydroxides, transition metal nitrates, transition metal halides, or a mixture of any two or more thereof, to generate an olefin-containing product stream; and collecting an olefin from the olefin-containing product stream; wherein the oxygen is fed with the carbon-containing feedstock in a gas stream comprising from greater than 0 wt % to about 21 wt % oxygen in an inert gas; and the process is conducted in the absence of a catalyst

A system and method for dynamically reducing sulfur and other contaminants in a crude oil feedstock. The method includes pumping a crude oil feedstock into an inlet of a cavitation reactor and rotating a rotor of the cavitation reactor to induce cavitation events within the crude oil feedstock by formation and collapse of unstable bubbles that resultingly induce shockwaves to propagate through the crude oil feedstock, which further causes mixing and rapid reaction under mild / low to moderate shear forces that reduces damage to the resulting fuel product.

The present invention discloses a method for pre-oxidizing cyclic hydrocarbons to promote cracking. In the present invention, oxygen or air is used to partially pre-oxidize and convert cyclic hydrocarbons at a temperature lower than the boiling point of the cyclic hydrocarbons under pressurized conditions, and the conversion rate of the cyclic hydrocarbon raw material after the pre-oxidation operation does not exceed 15%; the liquid-phase product obtained after the pre-oxidation operation is used for cracking. The present invention adopts a method of pre-oxidizing cyclic hydrocarbons to convert part of the cyclic hydrocarbons into cyclic hydrocarbon derivatives with oxygen-containing functional groups. The cyclic hydrocarbon derivatives with oxygen-containing functional groups can be cracked first to generate active free radicals during the cracking process due to their lower bond energy C-O or O-O chemical bonds, thereby promoting the ring-opening cracking of the remaining cyclic hydrocarbons and greatly improving the conversion rate of cyclic hydrocarbons; the present invention has the advantages of strong production capacity, low use cost, long operation cycle, low energy consumption, and less carbon deposition.

The present invention discloses a preparation method and application of a molybdate-loaded mesoporous silica composite material. The preparation process comprises the steps of sequentially mixing a template, a metal source, methanol, water, and a silicon source, and continuously stirring the resulting solution. The resulting solution is then subjected to alternating vacuum drying and ground into powder. The powder is then calcined at high temperature in a muffle furnace to obtain a highly dispersed mesoporous silica composite material containing molybdenum as an active center. The advantages are: greatly simplifying the synthesis process, reducing the cost of synthesis, and improving the utilization and recovery efficiency of raw materials. This allows for high dispersion of the catalyst's active sites and enhances the catalyst's high-temperature resistance in a high-temperature environment. The material has high catalytic activity against sulfur-containing compounds in oil products and can effectively improve the desulfurization efficiency of oil products. Based on ease of preparation and easy recovery, the material can effectively reduce production costs, improve oil product quality, and protect the environment to the greatest extent possible.

This invention discloses methods and processes to separate sulfur hydrocarbons in petroleum refinery feedstocks via non-thermal corona-discharged air (known as cold plasma). The procedure comprises physical and chemical processes including single or multi-step oxidation of nonpolar sulfur hydrocarbons by ozone bubbling and optionally the simultaneous addition of an extremely small amount of hydrogen peroxide. This is followed by an aqueous liquid / non-aqueous liquid extraction of the oxidized compounds under conditions sufficient to extract sulfur compounds into the aqueous extractant. This process is followed by a regeneration unit for the recovery of liquid extractant material. Moreover, a cooling tower is employed to prevent exhausting the vapors of hydrocarbon feedstocks, as a form of volatile organic compounds, during the plasma bubbling process. The invention introduces a desulfurization technique that effectively separates sulfur hydrocarbons from petroleum feedstocks and fuels, offering a complementary solution to traditional hydrodesulfurization processes or serving as a standalone system.

The present invention belongs to the field of energy and chemical industry, and specifically discloses a method for selective oxidative desulfurization in petroleum and its products. In this method, in a polar phase composed of water and acetonitrile, organic sulfides in a non-polar phase oil solution are selectively removed by direct oxidation of peroxy organic acid and activation of the peroxy organic acid by a catalyst to produce active substances. In the polar phase, peroxypropionic acid is used as an oxidant, and low-valent transition metals are used as catalysts to activate the peroxypropionic acid to produce active substances to achieve oxidative removal of organic sulfur in the non-polar phase. This process is suitable for the direct removal of organic sulfur in petroleum and the selective removal of organic sulfur in petroleum products, and can be expanded to the selective desulfurization of various liquid phase systems, such as the desulfurization of waste tire pyrolysis liquid. This process is suitable for reactions under normal temperature and pressure, and the process flow is simple and can be flexibly adjusted according to actual needs.