30results about How to "Reduced hydrothermal treatment process" patented technology

The invention discloses a diene hydrogenation method adopting a fixed-bed reactor. The catalyst is a palladium-based supported catalyst, the reaction technology conditions are as follows: the reaction temperature is 20-90DEG C, the reaction pressure at 1.0-4.0MPa, the mass ratio of hydrogen to diene is 1.0-3.0, and the volume space velocity is 1.0-10.0h<-1>. The hydrogenation reaction technology are mild in conditions, the hydrogenation saturation rate of monoolefine is low under high diene conversion rate, the loss rate of noble metal active centers of the catalyst is low, and the activity stability is good.

The invention relates to a zinc aluminate gahnite contained zinc oxide desulphurizer. The zinc aluminate gahnite contained zinc oxide desulphurizer is prepared from, by weight of oxide, 30-80wt% of zinc oxide, 10-20wt% of nickel oxide, 0-10wt% of molybdenum oxide and 150-220m<2> / g. The desulphurizer applied to catalytic cracking of gasoline desulfurization treatment is low in octane loss.

The invention relates to a zinc oxide material containing zinc-aluminate spinel. The zinc oxide content based on oxides is 55-90%, and the specific surface area of the zinc oxide material is 150-220 m<2> / g. The zinc oxide material is a zinc oxide material which contains the zinc-aluminate spinel, which is prepared by direct low-temperature calcination, which is uniformly dispersed, and the specific surface of which can be regulated in a range of 150-220 m<2> / g. The zinc oxide material is used for preparing adsorption desulphurization catalysts for gasoline or diesel oil treatment, can be added into an FCC catalyst as a desulphurization auxiliary agent, and can be adopted as a hydrodesulfurization catalyst carrier to load active components and then used for hydrodesulfurization of gasoline or diesel oil.

The invention relates to a sulfur-carrying hydrodesulfurization upgrading catalyst. On the basis of weight of the catalyst, content of a molecular sieve in the catalyst is 5-70wt%, VIB-family metal content is 2-10wt% calculated according to oxide, VIII-family metal content is 1-5wt% calculated according to oxide, sulfur content is 3-8wt%, content of a zinc-aluminum lamellar material prepared through non-constant pH alternate titration is 5-50%, and phosphorus content is 0-10wt% calculated according to oxide. The zinc-aluminum lamellar material in the catalyst has large specific surface area, and the sulfur-carrying hydrodesulfurization upgrading catalyst prepared by compositing the zinc-aluminum lamellar material with a molecular sieve material has good hydrodesulfurization and olefin-reducing performance.

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 relates to a desulphurization treatment method for catalytic cracking gasoline. A fixed bed reactor is adopted; and an adsorption desulfurizer comprises 40-85 wt% of zinc oxide containing gahnite, 10-35 wt% of nickel oxide and 0-25 wt% of molybdenum oxide. The specific surface area of the adsorption desulfurizer is 150-220 m<2> / g, and reaction adsorption desulphurization technology conditions are as follows: the reaction temperature being 300-450 DEG C, the reaction pressure being 0.5-3.0 MPa, the volume hourly space velocity being 2-10 h<-1>, and the hydrogen / oil volume ratio being 0.1-1.0. The method has the advantages of high desulphurization selectivity, high breakthrough sulfur capacity and high octane number loss.

The invention discloses a gasoline desulfurization method. The method adopts a fixed bed reactor, the catalyst is a loaded nickel-cobalt-molybdenum catalyst, and the catalyst carrier is a composite carrier containing zinc oxide-alumina. The gasoline hydrodesulfurization process provided by the invention has the advantages of mild technological conditions, strong adaptability to different raw materials, low octane value loss and high desulfurization rate, and is suitable for deep desulfurization of high sulfur content and high olefin content gasoline.

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.

The invention relates to a hydrodesulfurization catalyst containing a zinc-aluminum layered material. The hydrodesulfurization catalyst comprises 30 to 74wt% of alumina, 4 to 15wt% of a group VIB metal on the basis of oxide, 1.5 to 5wt% of a group VIII metal on the basis of oxide, 20 to 70wt% of a zinc-aluminum layered material prepared through nonconstant pH alternant titration and 0 to 5wt% of phosphorus on the basis of oxide. The hydrodesulfurization modified catalyst prepared from the zinc-aluminum layered material and the alumina material has good hydrodesulfurization and olefin reductioneffects.

The invention discloses a hydrogenating method of raffinate oil. The method is characterized in that a fixed bed reactor is used, a palladium-based supported catalyst is used, reaction temperature is 165-200 DEG C, reaction pressure is 1.0-5.0MPa, hydrogen / oil volume ratio is (300-700):1, volume space velocity is 1.0-6.0h<-1>. The hydrogenating method is mild in hydrogenating reaction process condition, high in aromatic hydrocarbon and olefin removing rate and long in stable operation period.

The invention relates to a hydrodesulfurization upgrading catalyst. The hydrodesulfurization upgrading catalyst is prepared from, 5-70 % by weight of the catalyst of molecular sieve, 2-10 % by weight of oxide of VIB family metal, 1-5 % by weight of oxide of VIII family metal, 5-50 % by weight of the catalyst of zinc aluminum layered material prepared through inconstant pH alternative titration and 0-10 % by weight of oxide of phosphorus. The zinc aluminum layered material has a large specific surface area, is uniform in zinc aluminum dispersion, and is used for preparing a catalytic cracking hydrodesulfurization upgrading catalyst, and the catalyst has good hydrodesulfurization performance and olefin reduction performance.

The invention relates to a regenerating method for an adsorption desulfurizer. A fixed bed reactor is adopted; and the adsorption desulfurizer comprises gahnite-containing zinc oxide, nickel oxide and molybdenum oxide, and the specific surface area of the adsorption desulfurizer is 150-220 m<2> / g. Regenerating technology conditions of the adsorption desulfurizer are as follows: the temperature rises to 260 DEG C from room temperature in a nitrogen atmosphere according to a heating rate of 15-30 DEG C / h, and stays at the 260 DEG C for 2-10 h, the temperature of a bed rises to 310 DEG C according to a heating rate of 5-20 DEG C / h, 10% air or an oxygen-containing gas is slowly introduced, and a cycle is established to regenerate a catalyst; and the regenerating pressure is 0.2-1.0 MPa. The regenerating method afresh recovers the desulfurization activity of the sulfur adsorption capacity-saturated inactivated catalyst in the desulfurization process through treatment in order to meet industrial operating requirements.

The present invention relates to a zinc-aluminum layered material and a preparation method thereof, wherein the main composition of the zinc-aluminum layered material is represented by a chemical formula of ZnxAly(OH)z(CO3)m.nH2O, wherein x is a number selected from 0.55-0.75, y is a number selected from 0.13-0.7, z is a number selected from 1.55-2.50, m is a number selected from 0.15-0.20, n is a number selected from 1-10, the x / y value is a number selected from 0.75-5.70, and the specific surface area is 150-280 m<2> / g. According to the present invention, the zinc-aluminum hydrotalcite-like layered material is prepared under the non-constant pH value by alternately titrating the aluminum-containing sodium carbonate solution and the zinc-containing solution; and the prepared material has characteristics of large specific surface area and uniform zinc-aluminum dispersing, such that the prepared can be used for the catalysis material after the low temperature calcination of the prepared material as the precursor.