39results about How to "Improve anti-glue ability" patented technology

The invention relates to a catalyst for selective hydrogenation of unsaturated hydrocarbons. The catalyst comprises a silica-alumina carrier and metal active components nickel, molybdenum and magnesium loaded on the carrier, and comprises the following components based on the total weight of the catalyst: The nickel oxide content is 7-18wt%, the molybdenum oxide content is 3.5-12wt%, the magnesium oxide content is 0.05-2.0%, and the silica-alumina carrier content is 75-91wt%. The mesopores of the carrier account for 3-70% of the total pores, and the macropores account for 1.5-55% of the total pores. The catalyst is prepared by an impregnation method, and the catalyst has good colloid resistance, arsenic resistance, sulfur resistance and water resistance.

The invention relates to a catalyst for selective hydrogenation of pyrolysis gasoline. The catalyst comprises a silicon oxide-alumina carrier and a metal active component palladium loaded on the carrier. The content of palladium is 0.15-0.45 wt% based on the total weight of the catalyst. The silica-alumina carrier contains 0.1-12wt% of silicon oxide, 0.1-10wt% of nickel-doped lanthanum ferrite, 0.05-6.8wt% of potassium, and the mesopores of the carrier account for 3-75% of the total pores, and the macropores account for 3-75% of the total pores. 1.5-60% of the total pores. The catalyst has good anti-colloid ability, strong anti-arsenic, anti-sulfur, and strong anti-water ability, especially suitable for the first stage of pyrolysis gasoline 6 -C 8 and C 8 The distillate is selectively hydrogenated.

The invention relates to a pyrolysis gasoline one-section selective hydrogenation method. A catalyst is prepared from a silicon oxide-aluminum oxide carrier and a metal active ingredient palladium loaded on the carrier; the palladium content is 0.15 to 0.45 weight percent of the total weight of the catalyst; the pectin resistant capability of the catalyst is good; the anti-arsenic, anti-sulfur andwater-resistant capability is high. Under the hydrogenation process condition, the reaction inlet temperature is smaller than or equal to 45 DEG C; the reaction pressure is 2.5 to 4.5MPa; the hydrogen oil volume ratio is 60 to 450; the liquid volume space velocity is 3.0 to 5.5h<-1>. The catalyst has high adaptability on pyrolysis gasoline raw materials with different arsenic content, different sulphur content, water content and pectin content; the low-temperature activity of the catalyst is high.

The invention relates to a FCC gasoline mercaptan etherification method. A fixed bed reactor is adopted, gasoline is introduced into the reactor, under the action of a catalyst, mercaptan in the gasoline and dialkene carry out etherification reactions, and the catalyst comprises a composite carrier and metal active components: nickel, molybdenum and magnesium. The reaction conditions are: reactionpressure 0.1-5 MPa, volume ratio of hydrogen to oil 2:1-30:1, reaction temperature 60-200 DEG C, and air speed 0.5-8 h<-1>. The catalyst has the characteristics that the mercaptan etherification activity is high and the loss of octane value is low and can adapt to various raw materials.

The invention relates to a catalyst for pyrolysis C9 two-stage hydrogenation and a preparation method thereof. The catalyst is prepared by taking a K and Ru modified composite oxide consisting of an HY molecular sieve, B2O3 and Al2O3 as a carrier and loading active components of Ni and Mo. The catalyst comprises the following active components in percentage by weight: 3.0-5.0% of NiO and 9.0-15.0% of MoO3. The catalyst provided by the invention is used for pyrolysis C9 two-stage hydrogenation, shows very high desulfurization activity and olefin saturation capacity, is strong in carbon deposition resistance and has a certain effect on macromolecular colloid pyrolysis, so that the colloid resistance of the catalyst is improved, and the service life of the catalyst is greatly prolonged.

The invention relates to a method for selective hydrogenation of unsaturated hydrocarbons in the middle distillate of pyrolysis gasoline, which includes the following process: nickel catalyst is reduced at 400-500°C in the presence of hydrogen, and adjusted to the reaction process conditions after cooling and passivation: reaction Inlet temperature 45-110°C, reaction pressure 2.0-4.5MPa, hydrogen-oil volume ratio 60-200:1; liquid volume space velocity 2.0-5.5h ‑1 ; The catalyst includes a silica-alumina carrier and metal active components nickel, molybdenum and magnesium loaded on the carrier. The catalyst has good colloidal resistance, strong resistance to arsenic, sulfur and water, and is suitable for long-term stable operation of the device.

The invention relates to an all-fraction selective hydrogenation method for pyrolysis gasoline. The all-fraction selective hydrogenation method includes procedures of carrying out reduction on nickelcatalysts in the presence of hydrogen under the condition of the temperature of 400-500 DEG C; carrying out cooling and passivation and then carrying out adjustment until reaction technological conditions are met. The reaction technological conditions include the reaction inlet temperatures of 45-110 DEG C, the reaction pressures of 2.0-4.5 MPa and the hydrogen-oil volume ratios of 60-200:1. The liquid volume space velocities are 2.0-5.5 h<-1>; the catalysts comprise silicon oxide-aluminum oxide carriers and metal active components including nickel, molybdenum and magnesium, and the metal active components are loaded on the carriers. The all-fraction selective hydrogenation method has the advantage that the catalysts are good in colloid resistance, high in arsenic resistance, sulfur resistance and water resistance and applicable to long-period stable operation of devices.