Method for removing olefins by means of hydrogenation of reformed oil

The invention relates to a method for removing olefins by means of hydrogenation of reformed oil. Active components of a catalyst include at least one of Pt and Pd; an additive is selected from one or two of Sn and Pb; a carrier is Al2O3; noble metals are distributed on the carrier in the form of thin egg shells; the egg shells are 0.05mm to 1mm in thickness; the specific surface area of the catalyst is 50m<2>/g to 400m<2>/g; the pore volume is 0.2cm<3>/g to 1.2cm<3>/g, wherein 50-80 percent of a total pore passage of the catalyst are pores of which the pore diameter is 5nm to 50nm; the content of the active components in percentage by mass is 0.05wt% to 0.5wt%; the content of the additive in percentage by mass is 0.5wt% to 10wt%; the balance is the carrier. According to the method, by using the catalyst, the amount of used noble metals is reduced and the utilization rate of the noble metals is increased; by adding an inorganic metal additive to inhibit the initial activity of the catalyst ...

Catalyst for fixed bed hydrogenation for continuous production of fatty alcohol, preparation method thereof and application thereof

The invention discloses a catalyst for fixed bed hydrogenation for continuous production of fatty alcohol. In the catalyst, copper and zinc are used as active components, one or more of manganese, barium or zirconium are used as a cocatalyst, and silicon and aluminum are taken as a structural promoter. Measuring by oxides, the content of the active components is 40 to 95 percent by mass; the content of the cocatalyst is 1 to 30 percent by mass; and the content of the structure promoter is 0.01 to 50 percent by mass. The catalyst has the advantages of environmentally friendliness, high activity, high selectivity, long service life and capability of catalyzing the fixed bed hydrogenation under a relatively low pressure for producing the fatty alcohol.

Pre-sulfurizing process of hydrogenation catalyst

一种延长加氢催化剂使用寿命的方法

... 一种延长加氢催化剂使用寿命的方法，采用活性白土和加氢催化剂复合装填，在原料接触催化剂之前先与酸性白土接触，使加氢催化剂形成积炭的物质在廉价的白土上积炭，从而延长加氢催化剂使用寿命，降低运行成本，避免了加氢催化剂的频繁再生或更换。 ...

Method for pretreating maleic anhydride absorption liquid

The invention discloses a maleic anhydride absorption liquid pretreatment method, which comprises three steps of filtration, steam stripping and adsorption, in the first step, solid impurities in a maleic anhydride absorption liquid are completely removed by using a filter screen, the number of filtration meshes is 20-1000, the temperature is 20-120 DEG C, and the pressure is 0.01-0.5 MPa; in the second step, volatile organic matters in the maleic anhydride absorption liquid are completely removed through steam stripping, the volume ratio of steam stripping gas to the liquid is 200-2000, the temperature of the steam stripping gas is 100-200 DEG C, and the pressure of the steam stripping gas is 0.35-0.6 MPa; in the third step, an adsorbent is adopted for adsorbing and removing non-volatile organic matter and coloring matter in the maleic anhydride absorption liquid, the liquid volume space velocity is 1-10 h <-1 >, the temperature is 100-200 DEG C, and the pressure is 0.01-1 MPa. The problems ...

Acid-proof catalyst for preparing gamma-valerolactone from levulinic acid, preparation method and application

An acid-proof catalyst for preparing gamma-valerolactone from levulinic acid is characterized by comprising the following components in percentage by mass: based on an oxide, 10 to 70 percent of active component, 0.05 to 20 percent of catalyst accelerator, and the balance of carrier. The acid-proof catalyst has the advantages of low cost, simple process, easy operation, high product yield rate and high safety in a production process.

Hydrogenation catalyst precuring method

Catalyst for preparing gamma-valerolactone by alpha-angelica lactone, preparation method and application

The invention relates to a catalyst for preparing gamma-valerolactone by alpha-angelica lactone, which is characterized by comprising the following components by weight percent calculated by oxide: 0.5-15% of active component, 0.05-20% of catalyst accelerator and the balance of carrier. The invention has the advantages of low cost, simple process, easy operation, high product yield and good safety in the production process.

Acid-proof catalyst for preparing gamma-valerolactone from levulinic acid, preparation method and application

An acid-proof catalyst for preparing gamma-valerolactone from levulinic acid is characterized by comprising the following components in percentage by mass: based on an oxide, 10 to 70 percent of active component, 0.05 to 20 percent of catalyst accelerator, and the balance of carrier. The acid-proof catalyst has the advantages of low cost, simple process, easy operation, high product yield rate and high safety in a production process.

Catalyst of succinic acid dicarboxylic ester and preparation method thereof

The invention discloses a catalyst of succinic acid dicarboxylic ester. The catalyst consists of the following components in percentage by weight: 5 to 25 percent of nickel serving as an active ingredient, 0.5 to 8 percent of aid and the balance of carrier, wherein the carrier is alumina, silicon oxide, silicon-aluminum composite oxide or active carbon; and the aid is one of Na, K, Ca, Mg, Mn, Baor Cu. The catalyst is prepared by an immersion method. The catalyst has the advantages of high heat stability, high activity and high selectivity.

Hydrogenation adsorption desulphurization and catalytic hydro-dearomatization cascade reaction process

Catalyst for photocatalytic water splitting hydrogen production and preparation method and application of catalyst

The invention discloses a catalyst for photocatalytic water splitting hydrogen production. The catalyst consists of the following components in percent by mass: 95-99.9 percent of titanium dioxide and 0.1-0.5 percent of carbon. The catalyst is efficient, stable and environment-friendly, and the hydrogen production efficiency is over 100 micromole.g<-1>.h<-1>.

Catalyst for preparing gamma-valerolactone from alpha-angelica lactone, and preparation method and application thereof

The invention provides a catalyst for preparing gamma-valerolactone from alpha-angelica lactone, which is characterized by comprising the following components in percentage by mass of oxide: 10-90% of an active component, 0.05-20% of a cocatalyst and a carrier. The method has the advantages of low cost, simple technique, easy operation, high product yield and high safety in the production process.

Hydrogenation refinement of reformate

A hydrogenation refining process for reformed oil whose arene with number of carbon atoms greater than 9 has been removed features that the content of arene is 20-85 wt.%, bromine is 0.5-8.0 g/100g of raw materials, and its reaction condition is at 15-200 deg.C, 0.5-3.0 MPa of hydrogen pressure in reactor, 3-15/hr of liquid space speed, and 100-500 of volume ratio of hydrogen to oil. The hydrogenating catalyst is thin Pd/gamma-A2O3 strips with Pd content of 0.15-0.6 wt.%. Its advantages include very low bromine content (0.2g/100g) of refined oil, no loss of arene, and long service life of catalyst (more than 3 years) without regeneration.

Catalyst for selective hydrogenation and olefin removal of reformed generated oil as well as preparation method and application

The invention provides a catalyst for selective hydrogenation and olefin removal of reformed generated oil. The catalyst comprises an active component oxide, an auxiliary agent oxide and a carrier, wherein according to the content of metal, the content of the components is as follows in percentage by mass: 0.05-0.5wt% of the active component oxide, 0.5-10wt% of the auxiliary agent oxide and the residual amount of the carrier; the active component oxide is at least one of oxides of noble metal Pt, Pd and Ru; the auxiliary agent oxide is one or two of oxides of Na, K, Mg, Ca, Co, Fe, Ni, Mo and Cu; the carrier is Al2O3. The catalyst has the advantages of high activity, good selectivity, long service life and low cost.

Method for preparing succinate

The invention discloses a method for preparing succinate. The method comprises the following steps of: mixing hydrogen and maleic acid ester, and performing hydrogenation with a fixed bed reactor filled with a hydrogenation catalyst to obtain the succinate; and partially circulating the generated succinate, mixing with the maleic acid ester to obtain raw materials, and feeding a product subjectedto hydrogenation into a gas-liquid separator to obtain succinate with content of over 99.6 percent, wherein the separated hydrogen can be recycled. The method has the advantages that: raw materials are diluted in a reaction product circulation mode, so that temperature runaway caused by hydrogenation heat release can be effectively avoided, by-products of the reaction is very few, and the servicelife of the catalyst is prolonged and the stability of the catalyst is improved.

Gasket stamping die

The gasket stamping die comprises a lower die body and an upper die body, the lower die body comprises a female die plate, and a stripping die plate is arranged on the upper die body; a lower die guide pin mounting station, a lower die conical rod mounting station, a lower die guide punching rod avoiding station, a lower die punching station and a lower die blanking station are arranged on the lower die; correspondingly, an upper die punching rod mounting station, an upper die blanking rod mounting station, an upper die guide punching rod mounting station, a lower die conical rod avoiding station and a lower die guide pin avoiding station are arranged on the upper die. Compared with a traditional stamping process, the gasket stamping die has the advantages that after the gasket punching process and before the blanking process, the hole site anti-arch preforming process of the gasket is carried out, the flatness and parallelism of the gasket can be guaranteed, and a pressing process does ...

Catalyst of succinic acid dicarboxylic ester and preparation method thereof

The invention discloses a catalyst of succinic acid dicarboxylic ester. The catalyst consists of the following components in percentage by weight: 5 to 25 percent of nickel serving as an active ingredient, 0.5 to 8 percent of aid and the balance of carrier, wherein the carrier is alumina, silicon oxide, silicon-aluminum composite oxide or active carbon; and the aid is one of Na, K, Ca, Mg, Mn, Ba or Cu. The catalyst is prepared by an immersion method. The catalyst has the advantages of high heat stability, high activity and high selectivity.

Preparation of cobalt and molybdenum catalyst for hydrorefining

The preparation method of the catalyst is as follows: after cobalt acetate is dissolved in water, ethylenediamine is added to form the mixed solution of cobaltous ethylenediamine, finally ammonium molybdate is added to made a co-impregnating solution containing cobalt and molybdenum metals, and after a pourous carrier is impregnated with this solution, the carrier is roasted under non-oxygen or slight-oxygen atmosphere to obtain the product. This method features simple equipment, and short preparation period thus assuring the activity of the catalyst. The hydrogenating-and-desulphurizing activity is much higher than that of the same kind catalyst produced by UOP company.

System for improving saline-alkali soil by using industrial carbon dioxide and method for reducing carbon and increasing yield by using system

A system for improving saline-alkali soil through industrial carbon dioxide comprises an industrial waste gas treatment system, a liquid carbon dioxide storage device, a carbon dioxide water dissolving device, a drip irrigation system and a salt discharging device. The method for reducing carbon and increasing yield by using the system comprises the following steps: 1) preparing industrial carbon dioxide with the purity of not less than 95% by using the industrial waste gas treatment system; 2) dissolving industrial carbon dioxide gas in water by using a gas water dissolving device to form an acidic aqueous solution; (3) applying the acidic aqueous solution into crop root layer soil by using a drip irrigation system to neutralize alkali metal ions in the soil so as to form bicarbonate easy to flow; and 4) discharging the eluent containing the bicarbonate out of the soil by using a salt discharging device.

Catalyst for preparing symmetric octahydroanthracene as well as preparation method and application of catalyst

The invention discloses a catalyst for preparing symmetric octahydroanthracene as well as a preparation method and application thereof, and belongs to the technical field of coal chemical industry and fine chemical industry. Aiming at the problems of complicated preparation, harsh process conditions and low selectivity of an anthracene hydrogenation process catalyst, the preparation method comprises the following steps: placing a carrier in water, carrying out ultrasonic treatment to uniformly disperse the carrier in the water, pouring precursor metal salt into the uniform dispersion liquid, and continuously stirring during the period to uniformly load active components on the carrier; adding a sodium hydroxide solution into the loaded dispersion liquid to adjust the pH value to 8-10, and adding a reducing reagent while stirring for reduction; after reduction is finished, suction filtration, washing and vacuum drying are performed; and putting the dried catalyst into a tubular furnace, ...

Hydrofining process for regerated oil

Hydrogenation catalyst, its process and use

A hydrogenation catalyst and its preparation and use are disclosed. The said catalyst consists of NiO 10-30wt.% and Al2O3 70-90wt.%, obtained by: drying quasi-hydrated aluminum oxide powder, passing steam to ream, roasting to have macroporous aluminum oxide carrier, dipping it in a solvent containing nickel compound, filtering, drying, roasting to form the final product. It is suitable for fractional oil containing dialkene and styrene and their derivatives to directly prepare solvent with high aromatic hydrocarbon and gasoline with high octane level by hydrogenation.

Fuel oil deep-adsorption desulfurizationn catalyst, preparation method and application thereof

The invention discloses a fuel oil deep-adsorption desulfurizationn catalyst. The desulfurizationn catalyst is characterized by consisting of an active component, a sulfur adsorbent and an adhesion agent, wherein the active component refers to one or more of Ni, Co, Cu, W and Mo oxides; the sulfur adsorbent refers to at least one of Mg, Ca, Zn, Ce, Fe, Mn and Ti oxides; the mass percent content of the active component is 2wt%-50wt%, the mass percent content of the sulfur adsorbent is 20wt%-90wt%, and the mass percent content of the rest components is the adhesion agent. The adhesion agent is one or a mixture of more than one of aluminium oxide, pseudo-boehmite, kaolin, imvite, bentonite, Yunmeng soil, kieselguhr, silica sol, silica gel and expanded perlite. The catalyst has the advantages of high specific surface area, moderate reaction, high intensity and low hydrogen consumption.

Acid-resistant catalyst for preparing gamma-valerolactone, preparation method and application thereof

The invention discloses an acid-resistant catalyst for preparing gamma-valerolactone, which, based on oxide, comprises the following components: 0.5 to 15 mass percent of active components, 0.05 to 20 mass percent of co-catalyst, and the balance of carrier. The acid-resistant catalyst has the advantages of low cost, simple process, easy operation, high product yield, and good safety of production process.

Acid-resistant catalyst for preparing gamma-valerolactone, preparation method and application thereof

The invention discloses an acid-resistant catalyst for preparing gamma-valerolactone, which, based on oxide, comprises the following components: 0.5 to 15 mass percent of active components, 0.05 to 20 mass percent of co-catalyst, and the balance of carrier. The acid-resistant catalyst has the advantages of low cost, simple process, easy operation, high product yield, and good safety of productionprocess.

Catalyst for durene conversion as well as preparation method and application thereof

The invention provides a catalyst for durene conversion. The catalyst comprises a carrier and metallic oxide, wherein the loading capacity of the metal oxide is 0.1wt%-16wt%. The catalyst has the advantages of high conversion rate and long service life.

CO2 dissolution and irrigation integrated method and system based on supergravity technology

According to the CO2 dissolution and irrigation integrated method and system based on the supergravity technology, CO2 gas and an initial water solution containing a nano-porous material enter a supergravity reactor, and a CO2 water solution is formed under rotation of the supergravity reactor; cO2 nano-micro bubbles are formed under the strong shearing force of a supergravity environment formed by rotation of the supergravity reactor and are adsorbed by the nano-porous material, and meanwhile, due to the fact that the mineralization degree of the initial aqueous solution is high, the surface tension of the initial aqueous solution is changed, so that the nano-porous material can be uniformly dispersed in water, and the adsorption capacity of the nano-porous material is improved. Further, the CO2 nano-microbubbles are adsorbed by the nano-porous material, and the CO2 nano-microbubbles can be stably dispersed in water. CO2 is quickly dissolved, dispersed and conveyed in alkaline irrigation ...

Method of prolonging service life of hydrogenation catalyst

A method for prolonging service life of hydrogenation catalyst includes compounded loading active argil and hydrogenation catalyst, making material contact with acidic argil before the material contacts with the catalyst, and making the h8ydrogenation catalyst from carbon deposit onto the cheap argil. The said method can reduce operation cost and avoid frequency regeneration and replacement of the hydrogenation catalyst.

Catalyst for producing butanedioic anhydride through high-selectivity hydrogenation of maleic anhydride and preparation of catalyst

The invention belongs to the technical field of succinic anhydride production through maleic anhydride hydrogenation, and particularly relates to a catalyst for producing succinic anhydride through maleic anhydride high-selectivity hydrogenation and preparation of the catalyst. The catalyst is composed of an active component and a carrier, the active component is highly dispersed on the carrier in an alloy state through a complexing agent, the dosage of the active component is 1-30wt% of the total weight of the catalyst, and the balance is the carrier; the specific surface area of the catalyst is 30-200m < 2 >/g, the surface acid content is 0.01-1.2 mmol NH3/g, the average pore size is 9-30nm, and pores with the pore size of 10-20nm account for 50-80% of the total pore size of the catalyst. The performance of the catalyst is regulated and controlled by alloying the active components and controlling the combination of the specific surface area, the surface acid amount and the pore diameter ...

Aromatic hydrocarbons or hydrogenation adsorption desulfurize catalyst containing aromatic hydrocarbons raw material and preparing method and applications

A hydrogenation absorption desulfurization catalyst for arene or arene-containing material contains in weight percent: nickel in reduced form 5-70%, zinc oxide 30-95% and alumina 0-50%. Hydrogenation absorption desulfurization is carried out by mixing the arene or the arene-containing material with hydrogen at a ratio of hydrogen/material of 400-1,500; and contacting with the catalyst through a fixed bed reactor with a space velocity of 1-10 h<-1> under the normal pressure-3MPa at 200-400 DEG C. The catalyst has the advantages of simple preparation process, large catalyst sulfur capacity (25-35%), good desulfuration effect, regeneration and reutilization and less arene loss.

Hydrogenation adsorption desulphurization and catalytic hydro-dearomatization cascade reaction process

The invention discloses a cascade reaction process for hydrogenation adsorption desulfurization and hydro-dearomatization. A hydrogenation adsorption catalyst and a hydro-dearomatization catalyst are directly and serially filled, and a raw material is removed with sulfide through the hydrogenation adsorption catalyst under the condition of hydrogenation adsorption, and then is removed with aromatic hydrocarbon through the hydro-dearomatization catalyst under the condition of hydro-dearomatization. The process has the advantages that no hydrogen sulfide is generated in a first reactor, and thecontent of the sulfide in a product is lower, thereby prolonging the using period of a second hydro-dearomatization catalyst, reducing operation cost, reducing equipment, and saving the investment.

Method for selective hydrogenation of reforming generated oil

The invention relates to a method for selective hydrogenation of reforming generated oil. According to the reforming generated oil, the bromine index is 7270mgBr/100g oil, and the weight of arene is 66.83%; the reaction conditions are as follows: the reaction temperature is 170 DEG C, the hydrogen partial pressure is 1.6MPa, the speed of liquid is 4h<-1> and the volume ratio between hydrogen and oil is 200. The method is characterized in that the used catalyst is Pd/gamma-Al2O3 containing 0.3wt% of palladium, and is passivated by a dry method with sulfur-containing compounds such as dimethyl disulfide, methyl thioether, butyl mercaptan or hydrogen sulfide before being filled; the added amount of the sulfide for passivation is as follows: the molar ratio of the palladium and the sulfur is 1-3.5; and the passivation temperature ranges from normal temperature to 230 DEG C. The method has the advantages that the pollution can be reduced, the investment can be reduced, convenience is brought ...

Carbon fiber online surface treatment and gum dipping device and preparation method

The invention relates to a carbon fiber online surface treatment and gum dipping device and a preparation method. The device consists of a carbon fiber desizing unit, a sizing unit, a gum dipping unit and a rolling unit, and can be used for preparing wet-process carbon fiber reinforced polyimide prepreg, and desizing and re-sizing treatment can be performed on carbon fibers according to functional requirements before gum dipping of the carbon fibers. By adopting the device, the integration of carbon fiber surface treatment and gum dipping functions in the preparation process of the carbon fiber reinforced polyimide prepreg can be realized, so that the problems of poor interface bonding force of a composite material caused by insufficient temperature resistance of a commercial carbon fiber sizing agent and fiber damage in the carbon fiber treatment process are solved. A composite material prepared from the carbon fiber reinforced polyimide prepreg prepared by the device shows better interlaminar ...

Aromatic hydrocarbons or hydrogenation adsorption desulfurize catalyst containing aromatic hydrocarbons raw material and preparing method and applications

A hydrogenation absorption desulfurization catalyst for arene or arene-containing material contains in weight percent: nickel in reduced form 5-70%, zinc oxide 30-95% and alumina 0-50%. Hydrogenation absorption desulfurization is carried out by mixing the arene or the arene-containing material with hydrogen at a ratio of hydrogen/material of 400-1,500; and contacting with the catalyst through a fixed bed reactor with a space velocity of 1-10 h<-1> under the normal pressure-3MPa at 200-400 DEG C. The catalyst has the advantages of simple preparation process, large catalyst sulfur capacity (25-35%), good desulfuration effect, regeneration and reutilization and less arene loss.

Catalyst for preparing gamma-valerolactone from alpha-angelica lactone, and preparation method and application thereof

The invention provides a catalyst for preparing gamma-valerolactone from alpha-angelica lactone, which is characterized by comprising the following components in percentage by mass of oxide: 10-90% of an active component, 0.05-20% of a cocatalyst and a carrier. The method has the advantages of low cost, simple technique, easy operation, high product yield and high safety in the production process.

PREPARING METHOD FOR HYDROGEN REFINING COBALT MOLYBDENUM CATALYZER.

The preparation method of the catalyst is as follows: after cobalt acetate is dissolved in water, ethylenediamine is added to form the mixed solution of cobaltous ethylenediamine, finally ammonium molybdate is added to made a co-impregnating solution containing cobalt and molybdenum metals, and after a pourous carrier is impregnated with this solution, the carrier is roasted under non-oxygen or slight-oxygen atmosphere to obtain the product. This method features simple equipment, and short preparation period thus assuring the activity of the catalyst. The hydrogenating-and-desulphurizing activity is much higher than that of the same kind catalyst produced by UOP company.