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 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.