370results about How to "High desulfurization activity" patented technology

The invention provides a sorbent used for reducing the content of sulfur in light hydrocarbon oil. According to weight percentage, the sorbent comprises 1-30 percent of phosphorus-modified rare earth faujasite, 5-40 percent of active metal oxide and 30-94% of carrier; wherein, the carrier comprises alumina and zinc oxide; the rare earth faujasite is modified by phosphorus and is pre-formed into porous heat-resistance solid grains together with carrier mixture; subsequently, the active metal oxide is led into the solid grains, thus preparing the sorbent; the light hydrocarbon oil raw material containing the sulfur and hydrogen donor enter a reactor filled with the sorbent; the materials are separated after reaction; the reaction products are sent to a subsequent separation system so that the product is separated; the sorbent to be regenerated after reaction is stripped, burned and regenerated; and the regenerated sorbent is reduced by the hydrogen donor and subsequently returns to the reactor so as to be circularly used. The sorbent realizes that the sulfur of light hydrocarbon oil is deeply removed, and simultaneously, the octane number of the outcome gasoline is higher, while thebenzene content is lower and the strength is higher.

This invention discloses a hydrogenation method for producing low-sulfur diesel oil. The method comprises: mixing base oil with hydrogen, introducing into a hydrogenation reactor to orderly contact hydrogenation protecting agent, hydrorefining catalyst I, hydrorefining catalyst II and freely selected hydrorefining catalyst III for reactions, cooling the effluent, and separating to obtain hydrogen-rich gas and liquid product. With the synergism of the catalysts, the whole catalyst activity is improved. By the method, high-sulfur, high-nitrogen and high-metal content diesel oil fraction can be treated under mild conditions, and low-sulfur diesel oil that can meet Europe III standard and Europe IV standard can be obtained. The method has such advantages as simple process, low operation pressure, low apparatus investment and low operation cost.

The present invention relates to a hydrotreating catalyst composed of a carrier having a Brønsted acid content of at least 50 mumol/g such as a silica-alumina carrier or a silica-alumina-third component carrier, in which the silica is dispersed to high degree and a Brønsted acid content is at least 50 mumol/g, and at least one active component (A) selected from the elements of Group 8 of the Periodic Table and at least one active component (B) selected from the elements of Group 6 of the Periodic Table, supported on said carrier. The present invention also relates to a method for hydrotreating hydrocarbon oils using the same. The hydrotreating catalyst of the present invention provides excellent tolerance to the inhibiting effect of hydrogen sulfide, high desulfurization activity, and exhibits notable effects for deep desulfurization of hydrocarbon oils containing high contents of sulfur, in particular gas oil fractions containing difficult-to-remove sulfur compounds. The hydrotreating catalyst of the present invention is also very effective for hydrodenitrogenation, hydrocracking, hydrodearomatization, hydroisomerization, hydrofining and the like of hydrocarbon oils.

A hydrotreating catalyst comprising a Group 8 metal of the periodic table, molybdenum (Mo), phosphorus and sulfur, wherein the average coordination number [N(Mo)] of the molybdenum atoms around the molybdenum atom is from 1.5 to 2.5 and the average coordination number [N(S)] of the sulfur atoms around the molybdenum atom is from 3.5 to 5.0 when MoS₂ structure in the catalyst is measured in accordance with extended X-ray absorption fine structure (EXAFS) analysis.

A hydrotreating catalyst having both a high desulfurization activity and a denitrogenation activity and a method of hydrotreating a hydrocarbon oil using the same is provided.A hydrotreatment catalyst comprising a silica-alumina carrier loaded with at least one hydrogenation-active component; wherein (1) the silica content is in the range of 2 to 40% by weight based on the total weight of the carrier; and (2) in the spectrum obtained by nuclear magnetic resonance analysis (29Si-NMR), (i) the area of the peak at -80 ppm is 10% or more of the combined area of all the peaks; and (ii) the combined area of peaks at -80 ppm, -86 ppm and -92 ppm is 20% or more of the combined area of all peaks; a hydrotreating catalyst comprising a silica-alumina carrier containing a specific amount of a third component loaded with at lest one hydrogenation-active metal component and having a specific pore structure; and a method of hydrotreating a hydrocarbon oil comprising contacting a hydrocarbon oil with hydrogen in the presence of said hydrotreating catalyst.

The invention discloses a hydrodesulfurization method of gasoline. The method adopts a fixed bed reactor. The catalyst is a loaded cobalt molybdenum catalyst, the hydrodesulfurization process conditions are: a reaction temperature of 190-310DEG C, a reaction pressure of 1.3-2.6MPa, a volume space velocity of 1.3-3.5h<-1>, and a hydrogen-to-oil volume ratio of 180-400:1. The hydrodesulfurization method provided by the invention has the advantages of mild process conditions, strong adaptability to different raw materials, low octane value and high desulfurization rate.

Provided are a hydrogenation catalyst for hydrocarbon oil, having markedly improved desulfurization activity, denitrogenation activity, and dearomatization activity; a carrier for the catalyst and its production; and a method of hydrogenation of hydrocarbon oil with the catalyst.

The invention provides a sorbent for desulfurizing cracked spirit and diesel engine fuel. The sorbent has good abrasion resistance and desulfurizing activity. With reference of the gross weight of sorbent, the desulfurizing sorbent includes the following components: 5-35wt percent of alumina; 3-30wt percent of monox; 10-80wt percent of metal oxide, at least one type selected from the families of IIB, VB and VIB; 3-30wt percent of accelerant metal, at least one type selected from the families of VIIB and VIII; and 0.5-10wt percent of metal oxide from the IIA family.

The invention relates to a selective hydrodesulfurization catalyst. The catalyst comprises, by mass, 3-5% of CoO as an active component, 10-13% of MoO3 as an active component, 2-3% of B203 as a carrier modification aid, 1-2% of P2O5 as a carrier modification aid, 1-1.5% of K2O as a carrier modification aid and 75.5-83% of a composite oxide carrier. The catalyst carriers comprise a zinc aluminate spinel-containing zinc oxide-alumina composite oxide prepared by nonconstant pH alternating titration. The catalyst has good desulfurization selectivity and stability.

The invention discloses a desulfurization adsorbent, which comprises 1 to 30 weight percent of rare earth-zeolite mixture, 5 to 40 weight percent of active metal oxide and 30 to 94 weight percent of carrier, wherein the carrier comprises alumina and zinc oxide; the rare earth-zeolite mixture and a carrier mixture are preformed into porous heat-resistant solid particles, and then active metal ingredients are introduced on the solid particles to obtain the adsorbent; and a light hydrocarbon oil raw material containing sulfur and a hydrogen donor enter a reactor filled with the adsorbent, materials remained after the reaction are separated, a reaction product is sent into a subsequent separation system for product separation, a spent adsorbent after the reaction is steam-stripped and then is subject to coke-burning regeneration, and the regenerated adsorbent is reduced by the hydrogen donor and is returned to the reactor for cyclic use. The adsorbent realizes the deep removal of sulfide in light hydrocarbon oil, and the produced gasoline has higher octane number, lower benzene content, and higher strength at the same time.

The invention relates to a catalytic gasoline absorbing desulfurization catalyst, a preparation method and an application thereof. According to weight percentage, the catalyst contains 10 to 85% of activated zinc oxide, 5 to 80 % of white carbon black, 5 to 30 % of aluminum oxide and 4 to 45 % of nickel oxide. The preparation method comprises the following steps of: (1) decomposing titanium tetrachloride under hydrogen atmosphere at 1400 DEG C to obtain gaseous phase white carbon black, (2) mixing the activated zinc oxide, gaseous phase white carbon black, aluminum oxide and nickel salt into starch, (3) spraying the obtained mixture into ball or injecting into ball, (4) drying the balls formed in the step (3) at 110 to 150 DEG C, and (5) roasting the balls obtained from the step (4) at 300 to 550 DEG C. The prepared absorbing desulfurization catalyst has the advantages of strong intensity, excellent durability, excellent desulfurization activity, small octane number loss, low transportation cost, and application on mobile bed absorbing desulfurization technique.

The invention relates to a desulfuration adsorbent for catalytic gasoline as well as a preparation method and an application of the adsorbent. The desulfuration adsorbent based on the total weight of the adsorbent which is 100% comprises the following components in percent by weight: 2-15wt% of a dealuminized ferrierite molecular sieve, 8-20wt% of an aluminum oxide binder, 10-30wt% of silicon source clay, 40-65wt% of zinc oxide, 10-25wt% of at least one metal accelerants selected from cobalt, nickel, copper and manganese and 0.1-2wt% of a metal assistant selected from metals in IA group and IIA group, wherein preferably, the at least one metal selected from cobalt, nickel, copper and manganese is Ni and/or Co. The adsorbent provided by the invention has high desulfuration activity, and meanwhile further has the advantage of remarkably increasing the octane number of gasoline. The adsorbent can be applicable to a desulfurization process of catalytic gasoline or hydrogenated gasoline.

The invention discloses a hydrofining catalyst containing molybdenum and/or tungsten and nickel and/or cobalt, wherein the catalyst comprises a heat-proof inorganic oxide carrying agent and molybdenum and/or tungsten or tungsten and nickel and/or cobalt loaded on the carrying agent, wherein the catalyst is prepared through immersing the heat-proof inorganic oxide carrying agent with dipping solution containing molybdenum and/or tungsten and nickel and/or cobalt compound. The catalyst prepared by the process provided by the present invention has higher hydrogenation desulfurization activity than the conventional catalyst.

The invention relates to an iron-manganese desulfurizing agent. The desulfurizing agent consists of 10 to 85 weight percent of iron oxide, 10 to 85 weight percent of manganese oxide and 5 to 20 weight percent of inorganic adhesive. The invention further discloses a preparation method for the iron-manganese desulfurizing agent. The iron-manganese desulfurizing agent is prepared by extruding and molding with a dry method and roasting at a specific temperature. The iron-manganese desulfurizing agent prepared by using the preparation method has optimal desulfurizing effect and high penetrating sulfur capacity. The test shows that the penetrating sulfur capacity of the desulfurizing agent can reach 25.1 percent. Moreover, the desulfurizing agent has high mechanical strength, can be widely applied in a chemical refining and desulfurizing process, and can be prevented from being broken to cause loss and affect the desulfurizing effect; and the test shows that the mechanical strength of the iron-manganese desulfurizing agent can reach 100N/cm.

The invention discloses a desulfurization adsorbent composition, which comprises 1 to 30 weight percent of phosphorus-modified rare earth-zeolite mixture, 5 to 40 weight percent of active metal oxide and 30 to 94 weight percent of carrier, wherein the carrier comprises alumina and zinc oxide; a rare earth-zeolite mixture is modified by phosphorus and then is preformed with a carrier mixture into porous heat-resistant solid particles, and then active metal components are introduced on the solid particles to obtain an adsorbent; and a light hydrocarbon oil raw material containing sulfur and a hydrogen donor enter a reactor filled with the adsorbent, materials remained after the reaction are separated, a reaction product is sent into a subsequent separation system for product separation, a spent adsorbent after the reaction is steam-stripped and then is subject to coke-burning regeneration, and the regenerated adsorbent is reduced by the hydrogen donor and is returned to the reactor for cyclic use. The adsorbent realizes the deep removal of sulfide in light hydrocarbon oil, and the produced gasoline has higher octane number, lower benzene content, and higher strength at the same time.

The invention provides a hydrocarbon oil desulphurization adsorbent, and a preparation method and an application thereof. With a total weight of the adsorbent as a standard, The adsorbent provided by the invention at least comprises the components of, by weight: (1) 1-20% of an aluminosilicate molecular sieve with a duodenary-ring pore-channel structure, (2) 3-35% of an alumina adhesive, (3) 5-40% of a silicon oxide source, (4) 10-80% of zinc oxide, and (5) 5-30% of at least one metal accelerating agent selected from cobalt, nickel, iron and manganese. The absorbent provided by the invention has high desulphurization activity, and has an advantage of a capacity for substantially increasing gasoline octane number.

The invention discloses a hydrocarbon oil desulfurization catalyst and a preparation method thereof, and a hydrocarbon oil desulfurization method. Based on the total weight of the hydrocarbon oil desulfurization catalyst as the reference, the hydrocarbon oil desulfurization catalyst comprises 10-80 wt% of at least one of metal oxides of IIB, VB, and VIB group elements, 3-35 wt% of aluminium oxide, 5-40 wt% of silicon nitride, 5-30 wt% of a metal accelerant selected from at least one of cobalt, nickel, iron and manganese, and 1-20 wt% of a molecular sieve with an FAU and/or BEA structure. The hydrocarbon oil desulfurization catalyst is excellent in stability, higher in desulfurization activity, better in wear resistance and longer in service life.

The invention provides a phosphorus-containing adsorbent for removing sulfur from cracked gasoline and diesel fuel, which has good wear resistant strength and desulfuration activity. On the basis of the total weight of the adsorbent, the desulfuration adsorbent comprises the following components: 1) 5-35wt% of alumina, 2) 3-30wt% of monox, 3)10-80wt% of at least one metal oxide which is selected from IIB, VB and VIB group, 4) 3-30wt% of at least one accelerator metal which is selected from VIIB and VIII group and 5) 0.3-5wt% of phosphorus oxide calculated on the basis of phosphorus.

The hydroprocessing catalyst for a heavy hydrocarbon oil, includes, as a carrier, a phosphorus-silica-containing alumina carrier containing 0.1% by mass to 4% by mass of phosphorus in terms of oxide based on the carrier, and 0.1% by mass to 1.5% by mass of silica based on the carrier, the carrier supporting 8% by mass to 20% by mass of at least one selected from metals in Group 6 of the periodic table in terms of oxide based on the catalyst and 2% by mass to 6% by mass of at least one selected from metals in Groups 8 to 10 of the periodic table in terms of oxide based on the catalyst.

The hydrogenation catalyst for heavy hydrocarbon oil, includes: as a carrier, phosphorous-zinc-containing alumina that contains 0.1% by mass to 4% by mass, in terms of oxide based on the carrier, of phosphorous and 1% by mass to 12% by mass, based on the carrier, of zinc oxide particles, and supporting, on the carrier, 8% by mass to 20% by mass, in terms of oxide based on the catalyst, of at least one selected from metals in Group 6 of the periodic table and 2% by mass to 6% by mass, in terms of oxide based on the catalyst, of at least one selected from metals in Groups 8 to 10 of the periodic table, and the average particle diameter of the zinc oxide particles being 2 μm to 12 μm.