1249results about "Refining to eliminate hetero atoms" patented technology

The invention relates to the technical field of catalysts, and discloses a preparation method of a supported catalyst for catalytic cracking oil slurry hydrogenation, and the preparation method comprises the following steps: S1, adding a phosphorus-containing compound into a carrier for modification: putting the carrier, phosphate and phosphoric acid into a round-bottom flask, adding water, and stirring for reaction to obtain a P element modified carrier; s2, dissolving a main active component of the catalyst in deionized water, then slowly adding into the P element modified carrier prepared in the step S1, and reacting to obtain a carrier loaded with the catalyst; and S3, roasting the catalyst-loaded carrier prepared in the step S2 to obtain the supported catalyst. According to the supported catalyst, a phosphorus compound modified carrier is adopted, and Ni-W-Mo or Ni-W active metal components are supported. The acid site of the carrier is optimized by adding the phosphorus element, and the surface acidity and the acid amount of the catalyst are optimized and adjusted by using a preparation process combining a microwave method and a co-impregnation method, so that the thermal stability of the catalyst is improved.

The invention belongs to the technical field of petroleum processing, and particularly relates to a catalyst and a preparation method and application thereof. The raw materials of the catalyst comprise a metal active component, a carrier and an auxiliary agent, the metal active component is sulfides of Mo and Ni elements, the carrier is spherical gamma-Al2O3 of 0.5-1 mm, and the auxiliary agent is P; the carrier is modified by using the metal active component and the auxiliary agent to serve as the catalyst. The high-activity catalyst is synthesized by adopting the strategy of changing the roasting temperature, adding the additive for doping modification and changing the molar ratio of metal active components, the additive is combined with surface aluminum atoms, the framework strength is enhanced, pore channel collapse caused by acid / water erosion is reduced, the water resistance and acid resistance of the catalyst are improved, and the catalytic reaction activity is further improved. The catalyst disclosed by the invention is accurate and controllable in structure, can be synthesized in batches, and can be applied to the co-catalytic hydrogenation process of biomass pyrolytic oil and / or a model compound thereof and petroleum distillate oil and / or VR.

The invention discloses a coal tar hydrogenation catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and an active metal component, wherein the carrier is a gallium modified silicon-aluminum carrier; in the gallium modified silicon-aluminum carrier, based on the mass of the gallium modified silicon-aluminum carrier, the mass content of gallium oxide is 2.0%-5.0%, the mass content of silicon dioxide is 20.0%-60.0%, and the mass content of aluminum oxide is 35.0%-78.0%; the active metal component comprises Mo and a group VIII metal element; the Mo comprises + 5 valence Mo; the group VIII metal element exists in the catalyst in the form of metal phosphide. The catalyst has high hydrogenation activity, appropriate cracking activity and good stability, and effectively improves the quality and yield of coal tar hydrogenation product oil.

The preparation method comprises the following steps: S1, uniformly mixing aluminum hydroxide dry glue powder, silica sol and an extrusion aid, then adding deionized water and nitric acid for mixing and kneading, and after caragana microphylla is formed, drying and roasting to obtain an aluminum oxide-silicon oxide composite carrier; s2, putting the carrier into a modification solution, and performing modification treatment in a high-pressure reaction kettle to obtain a modified aluminum oxide-silicon oxide composite carrier; and S3, preparing a precursor containing metals Mo, Co and Re into an impregnation liquid, adding L-asparaginic acid into the impregnation liquid, impregnating the modified alumina-silicon oxide composite carrier in the impregnation liquid, drying, and roasting to obtain the catalyst. The catalyst prepared by the method has high hydrodenitrogenation performance and metal capacity and long service life.

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.

The invention discloses a preparation method of a hydrofining catalyst for petrochemical engineering. The preparation method comprises the following steps: step a, carrier pretreatment: putting an aluminum oxide precursor into a dilute nitric acid solution with the mass fraction of 1-5%, dipping for 2-4 hours, and drying at 120-150 DEG C for 3-6 hours; the comprehensive performance of the catalyst is remarkably improved by modifying the alumina carrier with phosphoric acid and optimizing an active component loading process; a gradient acid center is constructed on the surface of the carrier through phosphoric acid treatment to promote adsorption and dissociation of the sulfur / nitrogen-containing compound; the dispersion degree of the active phase is enhanced and high-temperature sintering is inhibited by a bimetal synergistic loading strategy; the pore structure evolution is effectively controlled by a segmented drying and stepped heating roasting process, a through type mesoporous network is formed, and the macromolecular diffusion efficiency is improved; the obtained catalyst is improved in activity in diesel oil hydrodesulfurization, improved in mechanical strength and prolonged in service life.

The present invention relates to the technical field of heavy oil hydrodesulfurization, and discloses a hydrodesulfurization catalyst preparation process, which comprises: adding deionized water, a nickel source, a molybdenum source and a dispersant into a reaction container, stirring to obtain a metal solution, pouring into a container filled with gamma-Al2O3, impregnating, drying, and roasting to obtain the hydrodesulfurization catalyst. The dispersing agent contains a large number of nitrogen atoms and a plurality of carboxyl groups and hydroxyl groups, has very strong coordination chelation performance on nickel and molybdenum, improves the dispersity of nickel and molybdenum precursors, enables the nickel and molybdenum precursors to be uniformly impregnated into a gamma-Al2O3 carrier, and nickel oxide and molybdenum oxide are uniformly distributed in the gamma-Al2O3 carrier after calcination, so that the nickel and molybdenum oxide-modified gamma-Al2O3 composite material is prepared. The obtained hydrodesulfurization catalyst can expose more nickel-molybdenum catalytic active centers, effectively catalyzes and removes sulfur-containing substances such as thiophenes in straight-run diesel oil, shows a higher desulfurization rate, and improves the quality of oil products.

The invention discloses a combined processing technology of catalytically cracked gasoline, which belongs to the technical field of petrochemical engineering, and comprises the following steps: cutting the catalytically cracked gasoline into light component gasoline and heavy component gasoline; mixing the light-component gasoline with alkali liquor, continuously extracting with the alkali liquor, and collecting refined light-component gasoline; mixing the heavy-component gasoline with a hydrodesulfurization catalyst, carrying out hydrodesulfurization reaction, and collecting refined heavy-component gasoline; and mixing the refined light-component gasoline and the refined heavy-component gasoline to obtain a low-sulfur catalytically cracked gasoline product. The reinforcing material, the modified macroporous alumina, the organosilicon, the microcrystalline cellulose and the chitosan are mixed to form a cross-linked network structure aerogel as a hydrodesulfurization catalyst, stress generated under thermal shock of catalytically cracked gasoline can be absorbed and reduced, and the mechanical strength of the hydrodesulfurization catalyst is improved; the hydrodesulfurization catalyst has a large surface area and a porous structure, so that the specific surface area of the hydrodesulfurization catalyst is increased, and the desulfurization efficiency of the hydrodesulfurization catalyst is further improved.

The invention belongs to the technical field of supported catalysts, and particularly discloses a modified hydrogenation catalyst and a preparation method thereof. The modified hydrogenation catalyst is prepared from the following raw materials in percentage by mass: 60 to 70 weight percent of pretreated molecular sieve carrier, 0.5 to 1 weight percent of active metal component platinum and 20 to 40 weight percent of montmorillonite bonding composition. Various raw materials are mixed, so that the catalyst has a relatively large specific surface area and relatively good thermal stability, the structure can be kept stable under a high-temperature reaction condition, the high-temperature stability of the catalyst is enhanced, and the service life of the catalyst is prolonged.

The application discloses a hydrodesulfurization catalyst and a preparation method and application thereof. The hydrodesulfurization catalyst comprises a carrier and a second active metal component; the carrier comprises a first active metal nitride, a first active metal carbide, boron oxide and aluminum oxide; wherein the molar ratio of the first active metal nitride to the first active metal carbide, in terms of the first active metal, is 1:0.15-0.25. The hydrodesulfurization catalyst has the characteristics of good macromolecular diffusion performance, strong desulfurization capacity and good carbon deposition resistance. The hydrodesulfurization catalyst is particularly suitable for a residual oil hydrodesulfurization treatment process and has good desulfurization activity and stability.

The invention relates to the technical field of carrier forming, and discloses a preparation method and application of a tooth spherical catalyst carrier, the preparation method comprises the following steps: (1) carrying out mixing kneading, rolling and tooth spherical forming on an alumina precursor, a mixing kneading liquid and lubricating powder to obtain a tooth spherical forming substance; wherein the lubricating powder comprises at least two of starch, talcum powder and sesbania powder; (2) drying the tooth-ball-shaped molded substance, so that the dry basis content of the dried product is 40-50 wt%; and (3) roasting the dried product. The preparation method can effectively avoid cracking of the tooth balls, and can effectively improve the production efficiency and the product quality of the tooth-ball-shaped catalyst carrier.

The present invention provides a hydrogenation catalyst, and a preparation method therefor and a use thereof. The catalyst of the present invention comprises an active component and a carrier, wherein the active component is composed of Ni, Mo, and P, and the carrier is a composite oxide comprising magnesium oxide, aluminum oxide, and silicon oxide; and on the basis of the weight of the catalyst, the mass ratio of Ni to Mo in the active component is 1.1-5, preferably 1.9-2.3, and Ni is calculated as NiO and Mo is calculated as MoO3. The active component of the catalyst of the present invention contains a high content of nickel. When used for the second-stage hydrogenation of cracked gasoline, the catalyst can be suitable for treating a raw material having a higher diene content, shows relatively strong monoolefin saturation performance and desulfurization and denitrification activity, can effectively inhibit carbon deposition, and has high stability. Therefore, the catalyst of the present invention is particularly suitable for use in industrial production of the second-stage hydrogenation of cracked gasoline or a fraction thereof.

The invention discloses a hydrogenation device scale inhibitor for heavy high-sulfur raw oil and a preparation method of the hydrogenation device scale inhibitor, and relates to the technical field of scale inhibitors. The scale inhibitor is prepared from a polyisobutylene succinimide dispersing agent, a high-temperature-resistant scale inhibition dispersing agent, an anti-rust agent, an imidazoline corrosion inhibitor, an antioxidant, a sulfide chelating agent, a clearing agent, cup carbazole alkylbenzene sulfonate and a solvent in specific parts by weight. The preparation method comprises the following steps: heating the solvent to 80-100 DEG C, sequentially adding the other components, and stirring for 30-40 minutes. Aiming at the characteristics of heavy high-sulfur raw oil, the scale inhibitor realizes high scale inhibition rate, excellent high-temperature stability and strong sulfur corrosion resistance through a multi-component synergistic effect, effectively solves the problems of scaling and corrosion of a hydrogenation device, prolongs the operation cycle of the device, and is suitable for a hydrogenation process of high-sulfur and high-asphaltene raw oil.

Disclosed are an alumina porous material and its preparation and application. The porous material has substantially orderly distributed spherical or quasi-spherical cavities inside, the cavities have an average diameter of 100-500 nm, and at least a part of adjacent cavities are connected through mesopores. The alumina porous material is suitable for being used as a support for preparing a heavy residue hydroprocessing catalyst, or as a support for catalysts used in other macromolecular catalytic processes.

The invention provides a hydrodemetallization and desulfurization catalyst as well as a preparation method and application thereof, and the preparation method comprises the following steps: preparing unit cell distortion pseudo-boehmite P1, impregnating P1 with an impregnating solution I, and drying the impregnated material to obtain modified pseudo-boehmite; preparing unit cell distortion pseudo-boehmite P2; placing the modified pseudo-boehmite in a turntable forming machine for rolling ball forming to obtain an alumina carrier precursor; mixing the alumina carrier precursor with P2, then placing the mixed material in a turntable forming machine for continuous ball rolling forming, and drying and roasting the formed material to obtain an alumina carrier; and impregnating the alumina carrier with the impregnation liquid II, and drying and roasting the impregnated material to prepare the hydrodemetallization desulfurization catalyst. According to the method, P1 and P2 are taken as raw materials, P1 and P2 are converted into alumina carriers with rich surface defects during roasting, then the alumina carriers are impregnated with active metal by adopting impregnation liquid II, the number of active sites of the catalyst is effectively increased, and the method is suitable for the field of catalyst preparation.

A fixed-bed reactor is provided for desulfurization, comprising an outlet collector located at a lower end section of the reactor and a lower baffle plate spaced apart from an upper section of the outlet collector. The fixed-bed reactor efficiently reduces the surface temperature of the outlet collector located at a lower end section of the reactor.

The invention provides organic molybdenum salt rich in pentavalent molybdenum as well as hair preparation and application thereof. The weight content of Mo < 5 + > in the organic molybdenum salt is higher than 75%, preferably 80%-90%, further preferably 83%-88% by taking the total weight of a molybdenum metal element as a reference, and the mass content of the active metal in terms of the Mo metal element is 12 wt%-20 wt%, preferably 14 wt%-18 wt% by taking the weight of the organic molybdenum salt as a reference; the preparation method of the organic molybdenum salt comprises the step of reacting a molybdenum source with an organic ligand under the action of a hydronaphthalene compound and / or a hydrogenated anthracene compound. The organic molybdenum salt prepared by the method disclosed by the invention is high in pentavalent molybdenum content proportion and high in molybdenum metal content.

The invention relates to the technical field of catalysts, and discloses a heavy aromatics lightening catalyst and a preparation method thereof.The preparation method comprises the steps that deionized water, a nickel source and a molybdenum source are added into a container and stirred, then the solution is poured into the container containing a modified molecular sieve, drying, roasting and cooling are conducted after dipping, and the heavy aromatics lightening catalyst is obtained. A large number of carboxyl groups, imino groups and hydroxyl groups are introduced on the surface of the molecular sieve and are subjected to coordination complexation with nickel and molybdenum, and nickel-molybdenum oxide generated by high-temperature calcination can be uniformly distributed in a molecular sieve matrix, has more nickel-molybdenum catalytic active centers, can effectively catalyze C9 < + > heavy aromatics to generate light aromatics BTX, and can be used for preparing the light aromatics BTX. And the catalyst has good practical application in preparation of light aromatic hydrocarbon BTX by catalyzing heavy aromatic hydrocarbon.

The invention belongs to the technical field of preparation of biological aviation kerosene, and particularly relates to a composite catalyst, a preparation method thereof and a preparation method of the biological aviation kerosene. The isomerization catalyst and the cracking catalyst are combined, the active site of the composite catalyst is optimized, the yield of the biological aviation kerosene and the proportion of isomerization products are increased, the catalyst cost is low, and the technological process is flexible and controllable.

A system and method for producing methanol and synthetic fuels from waste acid gas streams using a plasma reactor is described in this disclosure. An acid gas stream comprising primarily of H2S and CO2 is fed into a plasma reactor. H2S is converted into H2 and sulfur. Simultaneously, CO is formed by the reverse water gas shift reaction. H2 and CO form a syngas stream. The unreacted H2S is captured in a tail gas treatment unit and recycled back to the plasma reactor. A partial CO2 capture unit is placed downstream of the tail gas treatment unit which is primarily used to adjust the ratio of H2 and CO in the syngas stream to 2-3 for methanol production and 2 for fuel production.

The invention discloses a preparation method and application of a micron-pore alumina carrier. The preparation method comprises the following steps: step 1, crushing a waste ethylene oxide catalyst; step 2, carrying out acid leaching on the crushed waste ethylene oxide catalyst to obtain silver, filtering to obtain a silver-containing leaching solution, and washing the residual solid with water to obtain an aluminum oxide filter cake; step 3, carrier preparation; uniformly mixing the alumina filter cake, a hard template pore-enlarging agent, a binder, a forming extrusion aid and a sintering aid; adding an aqueous solution containing a cross-linking agent, and kneading; extruding and dicing; and drying and roasting to obtain the micron-pore alumina carrier. According to the invention, through three measures of stacking crushed particles into secondary pores, decomposing a hard template agent into strip-shaped ultra-large micron pores in situ and cross-linking and condensing organic high-molecular polymers into communicating pores, the connectivity of pore channels is improved, the pore size is increased, the diffusion performance of the carrier is improved, and more iron scales can be accommodated.

Processes for making aviation fuels include a step of forming a C16− olefin stream by oligomerizing a mixture of decenes with a C6− alpha-olefin or by subjecting the mixture of decenes and a C8− alpha-olefin to metathesis. The C16− olefin stream is then hydrogenated to form C16− paraffins, and these C16− paraffins can be used to form an aviation fuel. Particular C11-C16 olefin compositions and paraffin compositions prepared by these processes also are described.

The invention relates to a method for predicting the carbon residue value of heavy oil hydrogenation generated oil, and the method comprises the following steps: obtaining a heavy oil raw material, and obtaining the characterization data of the characteristic properties of the heavy oil raw material; obtaining hydrogenated generated oil to be detected, wherein the hydrogenated generated oil to be detected is obtained by carrying out hydrogenation carbon residue removal reaction on the heavy oil raw material; substituting the characterization data of the characteristic properties of the heavy oil raw material into the characteristic factor equation of the hydrogenation carbon residue removal reaction, and calculating the characteristic factor of the hydrogenation carbon residue removal reaction; substituting the characteristic factor into the characteristic factor-reaction rate constant relation equation of the hydrogenation carbon residue removal reaction, and calculating the reaction rate constant of the hydrogenation carbon residue removal reaction; and substituting the reaction rate constant into the reaction kinetic equation of the hydrogenation carbon residue removal reaction, and calculating the predicted carbon residue value of the hydrogenation generated oil to be detected. By adopting the method disclosed by the invention, the carbon residue value of the heavy oil hydrogenation generated oil can be accurately predicted.

The invention relates to the technical field of catalysts, in particular to a desulfurization catalyst and application thereof in hydrodesulfurization. The desulfurization catalyst adopts a hollow core shell, a weak acid site is constructed on a shell surface, and a boron-containing polymerization network is formed through surface-initiated polymerization; and linear / branched polyethyleneimine complexation is used for synergistically introducing Ni and Mo, in-situ vulcanization is performed after inert atmosphere pretreatment, and a dispersed nickel molybdenum sulfide active phase and shallow and deep double-peak metal distribution are obtained. The structure inhibits excessive hydrogenation while ensuring diffusion and structural stability, promotes a direct desulfurization path, and shows high conversion and high selectivity to 4, 6-dimethyl dibenzothiophene. The catalyst has low hydrogen consumption, high aromatic hydrocarbon retention and cycling stability, and is suitable for deep desulfurization of diesel oil and preparation of ultralow-sulfur fuel.

The invention discloses a residual oil hydrogenation carbon residue removal catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier and an active metal component, the carrier is aluminum oxide containing silicon and gallium; on the basis of the weight of the catalyst, the mass content of the carrier is 74%-83%, the content of the group VIII metal in terms of oxide is 2%-6%, and the content of molybdenum in terms of oxide is 15%-24%; the active metal component comprises Mo and a group VIII metal element; the Mo comprises + 5 valence Mo; the group VIII metal element exists in the catalyst in the form of metal phosphide. The catalyst has good hydrogenation carbon residue removal performance, can deeply remove polycyclic aromatic hydrocarbon and heterocyclic aromatic hydrocarbon in residual oil and reduce precursors of carbon residues, and has good stability.

Systems and methods are provided for co-processing plastic waste in a coker as part of an integrated refinery environment that produces kerosene, jet fuel, and / or jet fuel blending components as a product. The co-processing can be performed in a fluidized coker, a delayed coker, or a combination of fluidized cokers and delayed cokers. After coking, hydroprocessing can be performed on one or more portions of the coker effluent that contribute to formation of the kerosene, jet fuel, and / or jet fuel blending component product(s). The hydroprocessing can be used to reduce or minimize the presence of unexpected nitrogen contaminants in the resulting kerosene, jet fuel, and / or jet fuel blending component product(s).

The invention discloses a hydrodesulfurization catalyst as well as a preparation method and application thereof. The catalyst comprises a carrier, an organic hydrogenation active metal compound and an organic sulfur-containing compound, wherein the organic sulfur-containing compound is selected from at least one of benzothiophene sulfur-containing compounds, dibenzothiophene sulfur-containing compounds or naphthothiophene sulfur-containing compounds containing substituent groups and / or functional groups. The preparation method of the hydrodesulfurization catalyst comprises the following steps: preparing an impregnation liquid containing an organic sulfur-containing compound and an organic hydrogenation active metal compound; and impregnating a carrier with the impregnation liquid, and drying to obtain the catalyst. The catalyst is used in the hydrodesulfurization process of distillate oil, and the deep hydrodesulfurization activity can be obviously improved.

The invention relates to the technical field of petroleum refining process and industrial automatic control, in particular to a closed-loop intelligent control refined diesel hydrogenation filtration parameter optimization method which comprises the following steps: step 1, acquiring refined diesel sulfur content and raw oil flow data in real time, and generating an effective sulfur concentration sequence through dynamic weighted filtering; 2, calculating a local blockage coefficient of the catalyst; 3, outputting a real-time activity factor of the catalyst through an activity attenuation relational expression; 4, dynamically calculating and predicting the adsorption capacity; 5, generating an instruction for shortening the backwashing period and reducing the filtering rate; 6, generating a backwashing intensity adjusting instruction in proportion according to the absolute value of the sulfur concentration change slope; 7, adjusting the filtering rate, the backwashing period and the washing intensity; and 8, if the target value is not reached, returning to the step 2, and re-evaluating the activity of the catalyst. According to the method, the accuracy and the stability of the data are effectively improved, and reliable real-time data support is provided for subsequent filtering parameter optimization.

The invention relates to the technical field of catalysts, in particular to a graphene-based desulfurization catalyst and a preparation method thereof. Graphene oxide is used as a carrier, an initiating group is introduced firstly, a short-brush amphoteric polymer gradient modification layer and a long-brush amphoteric polymer gradient modification layer are sequentially constructed through atom transfer radical polymerization, ammonium molybdate-urea complex deposition is fused, and uniform nucleation of a metal precursor is achieved. Two-stage vulcanization is adopted in the preparation process, the crystallization process of a precursor is controlled step by step at different temperatures, and the size and dispersity of a molybdenum disulfide sheet layer are optimized. The catalyst is high in conversion rate under a hydrodesulfurization model system, low in total sulfur of discharged materials, and excellent in activity retention rate after multiple cycles. The method can be widely applied to the field of fuel oil deep desulfurization, and the efficient and environment-friendly industrial catalysis requirement is met.

The invention belongs to the field of regeneration treatment of waste mineral oil, and particularly relates to a hydrogenation catalysis treatment process for a waste mineral oil suspension bed. The method aims at the problem of deep removal of impurities such as organic chlorine and organic silicon in waste mineral oil. A novel multifunctional composite adsorbent is prepared, a modified aluminum oxide-titanium oxide composite carrier is used as a basis, a main active metal tungsten and an auxiliary agent metal copper are loaded, and the main active metal tungsten and the auxiliary agent metal copper are converted into corresponding sulfides through vulcanization treatment; through multi-stage countercurrent contact, impurities such as chlorine and silicon in the waste oil are deeply removed, the process can efficiently remove organic chlorine and silicon impurities in the waste mineral oil, the service life of a hydrogenation catalyst is remarkably prolonged, the product quality is improved, and downstream equipment is prevented from being corroded.