30results about How to "Favorable for hydrodesulfurization reaction" patented technology

The invention discloses a hydrorefining catalyst and a preparation method thereof. The catalyst is a bulk phase hydrorefining catalyst, and comprises alumina and hydrogenation active metal components W, Ni and Mo. The surface phase of the catalyst has the characteristics of high content of active metals, large density of active sites, uniform dispersion of the active metals, good coordination and cooperation among the active metals, and high utilization rate of the active metals, and the catalyst has the characteristics of reasonable pore structure, high mechanical strength and high hydrodesulfurization and hydrodenitrogenation reaction performances, and is especially suitable for being applied to ultra deep hydrodesulfurization and nitrogen removal reaction of diesel oil fraction.

The present invention discloses a hydrorefining catalyst preparation method. According to the method, a nickel aluminum precipitate is prepared through a positive adding method, a tungsten, molybdenum and aluminum precipitate is prepared through a parallel flow method, an organic amine is added during any one or two above gelatinization processes, the two precipitates are mixed, aging is performed, a hydrothermal treatment is performed while urea is added, and molding and the like are performed to prepare the catalyst. According to the present invention, the prepared catalyst is particularly suitable for super deep hydrodesulfurization and denitrification reaction of diesel oil distillates, and has high hydrodesulfurization and hydrodenitrogenation activity.

The present invention discloses a hydrorefining catalyst and a preparation method thereof. The catalyst is a bulk phase hydrorefining catalyst, and comprises hydrogenation active metal components such as W, Ni and Mo, a microporous and mesoporous composite molecular sieve and alumina, wherein the epiphase active metal content is high, the activity site density is large, the active metal dispersion is uniform, the coordinated matching between the active metals is good, the active metal utilization rate is high, the catalyst pore structure is reasonable, the mechanical strength is high, and the hydrorefining catalyst is particularly suitable for ultra-deep hydrodesulfurization and denitrification reactions of diesel oil distillates, and has high hydrodesulfurization and hydrodenitrogenation activities.

The invention discloses a gasoline and diesel oil combined hydrogenation method, comprising the following steps: the raw gasoline is mixed with hydrogen, the mixture passes through a first reaction zone under the condition of gasoline hydrofining, a hydrofining catalyst is used in the first reaction zone and the raw gasoline is coker gasoline and/or fluid catalytic cracking gasoline; the reactor effluent from the first reaction zone is mixed with the raw diesel oil, the mixture passes through a second reaction zone under the condition of diesel oil hydrodearomatization, a hydrofining catalystis used in the second reaction zone and the raw diesel oil is one or more of straight-run diesel oil, coker diesel oil or fluid catalytic cracking diesel oil; and the reactor effluent from the secondreaction zone passes through a third reaction zone under the condition of diesel oil hydrodesulfurization and a hydrodesulfurization catalyst is used in the third reaction zone. The method effectively utilizes the heat emitted during secondary processing gasoline hydrogenation, is simple in process and low in energy consumption and can obtain high-quality gasoline and diesel oil products.

The invention discloses a hydrotreating catalyst and a preparation method thereof. The catalyst is a bulk-phase catalyst; components of the hydrotreating catalyst comprise hydrogenation active metal ingredients W, Ni and Mo, and aluminum oxide, wherein the W and the Ni exist in the form of a compound oxide: NixWyOz; the Mo exists in the form of MoO3. The active-site density of the active metal W and Ni in the epiphase of the catalyst is high; the utilization rate of hydrogenation active metal is high; meanwhile, the pore structures of the catalyst are reasonable; the active metal is more uniformly dispersed; the mechanical strength is high; the hydrotreating catalyst is particularly suitably applied to the ultra-deep hydrodesulfurization and denitrification reactions of a diesel fraction.

The invention discloses a method for making a hydrofining catalyst. According to the method, a nickel and aluminum deposit is prepared through adopting a positive addition method; a tungsten, molybdenum and aluminum deposit is prepared through adopting a parallel-flow method; the two deposits are mixed; an obtained first mixture is aged, and then urea is added into the first mixture while the hydrothermal treatment is carried out; afterwards, an obtained second mixture is soaked by using a solution containing an organic compound, and then the soaked second mixture is made into the catalyst through molding and the like. According to the catalyst prepared by the method, the content of epiphase active metal is high; the active-site density is high; the active metal is more uniformly dispersed; the coordination and the cooperation among active metal are good; the utilization rate of the active metal is high; meanwhile, the pore structures of the catalyst are reasonable; the mechanism strength is high; the hydrofining catalyst is particularly suitably applied to the ultra-deep hydrodesulfurization and hydrodenitrification reactions of a diesel fraction, and has higher hydrodesulfurization and denitrification activity.

The invention discloses a preparation method of a bulk phase hydrogenation treatment catalyst. The composition of the catalyst includes hydrogenation active metal components W, Ni and Mo, alumina, and its preparation method is to prepare nickel and aluminum precipitate slurry I by acid precipitation method; adopt co-current precipitation method to prepare tungsten and aluminum precipitate slurry II, mix the two, after aging, hydrothermal treatment with water vapor and add urea, then combine with MoO ₃ After beating and mixing evenly, soaking in the solution containing organic compounds, and then forming and other steps to prepare the hydrogenation treatment catalyst. The catalyst is particularly suitable for application in ultra-deep hydrodesulfurization and denitrogenation reactions of diesel fractions.

The invention discloses a preparation method of a hydrofining catalyst composition. The catalyst composition is a bulk phase hydrofining catalyst composition, and comprises hydrogenation active metal components W, Ni and MO, and alumina. The preparation method of the catalyst composition comprises the following steps: preparing a nickel and aluminum mixed precipitate through an ammonia distillation and precipitation technology in the presence of an organic compound, preparing a tungsten, molybdenum and aluminum mixed precipitate through a parallel flow precipitation technology, mixing the nickel and aluminum mixed precipitate with the tungsten, molybdenum and aluminum mixed precipitate, ageing the obtained mixture, carrying out hydrothermal treatment and adding urea, and molding the finally obtained mixture to prepare the catalyst composition. The catalyst composition prepared through the method is especially suitable for being applied to ultra deep hydrodesulfurization and nitrogen removal reactions of diesel oil fractions, and has high hydrodesulfurization and hydrodenitrogenation reaction performances.

The invention discloses a preparation method of a hydrofining catalyst. The method comprises the following steps of in the presence of an organic compound, preparing nickel and aluminum precipitates by a normal precipitation method, preparing tungsten, molybdenum and aluminum precipitates by a parallel flow precipitation method, mixing the nickel and aluminum precipitates with the tungsten, molybdenum and aluminum precipitates, performing ageing, adding urea while performing hydrothermal treatment, then performing shaping and the like so as to prepare the catalyst. The catalyst prepared by the method is high in content of surface phase active metal, and high in active site density, the active metal is uniformly dispersed, the active metal is well coordinated and matched, the utilization rate of the active metal is high, and the pore structure of the catalyst is reasonable. The catalyst is high in mechanical strength, has higher hydrodesulfurization and hydrodenitrogenation reaction properties, and is particularly suitable for being used in ultra-deep hydrodesulfurization and denitrification reactions of diesel fractions.

The invention discloses a hydrofining catalyst and a preparation method thereof. The catalyst is a bulk phase hydrofining catalyst and comprises hydrogenation active metal components W, Ni and Mo, magnesium oxide and aluminum oxide, the content of surface phase active metal is high, the active site density is high, active metal is uniformly dispersed, the active metal is well coordinated and matched, the utilization rate of the active metal is high, and the pore structure of the catalyst is reasonable. The catalyst is high in mechanical strength, has high hydrodesulfurization and hydrodenitrogenation reactive properties, and is particularly suitable for being used in ultra-deep hydrodesulfurization and denitrification reactions of diesel fractions.

The invention belongs to the technical field of petrochemical industry, and relates to a hydrocracking technology. By a heavy oil hydrocracking technology provided by the invention, through addition of a hydrocracking catalyst and a hydrofinishing catalyst simultaneously in a hydrocracking reaction, in cooperation with supplementation of fresh hydrogen, the partial pressures of H2S and NH3 in a secondary hydrocracking reaction are reduced, and a hydrodesulfurization reaction and a hydrodenitrification reaction can be promoted to be reversely performed. The lightweight conversion rate of heavyoil is improved, and the desulfurization rate and the denitrification rate are greatly increased, so that an oil product with relatively high quality is directly and efficiently obtained. In allusionto the characteristics of components contained in the heavy oil, the time of inflating the secondary hydrogen and heating is further controlled, so that the reaction time is saved on the basis that amore easily cracked heavy oil component is hydrocracked as much as possible; through timely heating and supplementation of fresh hydrogen, hydrocracking and refinement of a heavy oil component which is more difficultly cracked for removing heteroatoms is promoted.

The invention discloses a method for preparing a hydrogenation treatment catalyst. The catalyst is a bulk catalyst, and its composition includes hydrogenation active metal components W, Ni and Mo, and alumina; its preparation process is as follows: prepare nickel and aluminum-containing precipitate slurry by steaming ammonia, and prepare tungsten-containing , Aluminum precipitate slurry, mix the two evenly, after aging, perform hydrothermal treatment with water steam and add urea, and then mix with MoO ₃ Mixing and beating, forming and other steps to obtain a hydrogenation treatment catalyst. The catalyst is particularly suitable for application in ultra-deep hydrodesulfurization and denitrogenation reactions of diesel fractions.

The invention discloses a wax oil liquid-phase hydrotreating method. The method comprises the following steps: mixing a wax oil raw material, light distillate oil and hydrogen in hydrogen dissolving equipment to dissolve the hydrogen in a liquid-phase raw material; the liquid-phase raw material in which the hydrogen is dissolved is in contact with a hydrotreating catalyst for a hydrotreating reaction; and separating the material after the hydrotreating reaction to obtain a gas-phase product, light distillate oil and heavy distillate oil, optionally circulating part or all of the light distillate oil back to the hydrogen dissolving equipment, and using the heavy distillate oil as a catalytic cracking raw material. According to the method, heavy fraction excessive hydrogenation is avoided when the sulfur content of catalytic cracking raw oil is met, and the chemical hydrogen consumption can be obviously reduced.