The invention provides an efficient composite oxide desulfurizing agent preparation method which includes the steps: selecting Fe2+ as an iron source of main active components; adding soluble salt of metals such as Zn, Mn, Cu and Co in a certain proportion to serve as promoters; taking alcohol amine as a precipitant; acquiring composite hydroxide precipitation by the aid of a co-precipitation method; depositing Al3+ by the aid of alcohol amine solution under a certain reaction condition to obtain alumina sol; mixing the alumina sol and a composite hydroxide system obtained by the co-precipitation method according to a certain proportion; washing, drying, oxidizing and grinding mixture into powder, adding a certain quantity of binders, and kneading the mixture to obtain a composite oxide desulfurizing agent. The method creatively takes alcohol amine organic alkali as a precipitating agent for preparing composite hydroxide, and the obtained desulfurizing agent has high breakthrough sulfur capacity in oxygen-free atmosphere. Besides, the invention provides a method taking the alumina sol prepared by alcohol amine as a hole channel carrier of the composite oxide desulfurizing agent, and the hole structure of the composite oxide desulfurizing agent is improved.

Efficient composite oxide desulfurizing agent preparation method

The invention discloses a method for preparing MIBK through industrial by-product low-purity acetone. The method is performed through two segments of technologies. In the first segment of technology, acetone is converted into MIBK and part of impurities under the action of MIBK synthetic catalysts; in the second segment of technology, under the action of protective catalysts, main impurities are converted into products easy to separate and it is guaranteed that acetone is not lost basically. The method can achieve conversion of most part of substances difficult to separate in raw material, products are easy to eliminate through rectification, reaction temperature of a main reaction catalyst bed layer is remarkably lowered, the service life of main catalysts is remarkably prolonged, unexpected side reaction is inhibited, and therefore the product yield and the economical efficiency of a device are further improved. MIBK superior products with the purity being 99.5wt% can be obtained by separating reaction products.

Method for preparing MIBK through industrial by-product low-purity acetone

The invention provides an adsorption desulfurization additive, a preparation method of the adsorption desulfurization additive, the adsorption desulfurization additive prepared by the method and a desulfurization system. The adsorption desulfurization additive comprises a an adsorption desulfurization additive carrier and a metal oxide ingredient loaded on the adsorption desulfurization additive carrier, wherein the adsorption desulfurization additive carrier is a mixture of aluminum oxide and silicon oxide; and the metal oxide ingredient is one or more of sodium oxide, potassium oxide, magnesium oxide, calcium oxide, titanium oxide, vanadium oxide, chromium oxide, manganese oxide, ferric oxide, copper oxide, zinc oxide, zirconium oxide, lanthanum oxide, cerium oxide, praseodymium oxide and neodymium oxide. The desulfurization system provided by the invention has an excellent desulfurization effect.

Adsorption desulfurization additive, as well as preparation method and desulfurization system thereof

The invention belongs to the technical field of flue gas desulfurization of the petroleum refining industry and discloses a high-efficiency catalytic cracking flue gas sulfur-transfer agent which has the good reduction ability at the low temperature and a preparation process thereof A mechanical dispersing grinding high-specific-surface-area magnesia-alumina source and other element compounds are used, and the high-dispersion and high-sphericity-degree low-temperature reduced catalytic cracking flue gas sulfur-transfer agent is obtained through a method comprising the steps of forming, screening, roasting and hydration According to the agent and the process, raw materials which are small in particle and large in specific surface area are preferred, and the produced catalytic cracking flue gas sulfur-transfer agent is uniform in particle and good in metal ion dispersion, so that sulfur oxides can be attached to the surface of the sulfur-transfer agent in a good mode, sulfate can be reduced at the low temperature (below 500 DEG C), the sulfur absorption of the sulfur-transfer agent is good in Sox adsorption capacity and oxidative sulfur absorption rate, the reduction performance is good, the agent and the process are applicable to catalytic cracking devices having requirements for the reduction temperature, the reduction temperature is reduced, and effects of energy conservation, emission reduction, low carbon and environmental protection are achieved

Low-temperature reduced catalytic cracking flue gas sulfur-transfer agent and preparation process thereof

The invention discloses a hydrogenation catalyst for petroleum resin and a preparation method and application thereof A reaction device is subjected to bench scale and pilot scale tests through a high-pressure stationary bed, the catalytic performance of the hydrogenation catalyst is evaluated, and the hydrogenation catalyst is applied to industrial production The hydrogenation catalyst is characterized in that activated carbon or silicon dioxide is used as a carrier and loads active metal nickel, nickel-molybdenum and nickel-tungsten components, the mass fraction accounts for 30-50%, a same-volume dipping method is adopted, the hydrogenation catalyst is used for C5 and C9 petroleum resin and has good low-temperature hydrogenation activity, a neutral carrier is adopted to decrease breakage of molecular chains, the variation amplitude of a softening point of a product after hydrogenation is smaller, the impurity-resisting capacity and stability of the hydrogenation catalyst are excellent, and bromine value and chroma are both within an ideal range

Hydrogenation catalyst for petroleum resin and preparation method and application thereof

The invention discloses a method for preparing desulfurizer capable of absorbing catalytic cracking gasoline at high selection, wherein catalyst is formed by loading the active components, such as nickel, cobalt and copper, on alkaline-metal modified silicon-aluminum composite carrier. The method for preparing the catalyst comprises two processes: the first process is to prepare the soluble precursor of each component and complexing agent as colloidal sol, dry, roast, form and process through hot water to obtain the catalyst; and the second process is to adopt the sol-gel method to prepare analkaline composite oxide carrier, then adopt a soaking method to introduce the first active component Ni and one of the second active components Co, Cu and Sn, finally process through the hot water to obtain the catalyst. The method has simple process, the large specific surface area of the catalyst is large, and the activity is stable. The method has advantages of high desulfurizing depth, good selection and little loss of octane value, so the method can be suitably applied to the desulfurization process of the catalytic cracking gasoline.

Method for preparing desulfurizer capable of absorbing catalytic cracking gas at high selection

The invention relates to a method for performing hydrogenating pretreatment on carbon nine petroleum resin. The method is characterized by comprising the following steps of: 1, preparing a transition metal hydrogenating pretreatment agent, wherein a carrier comprises one or more of aluminum oxide, silicon oxide and/or amorphous silicon aluminum oxide; metal active ingredients comprise two or moreof transition metal cobalt, molybdenum, nickel, tungsten and zinc; and the hydrogenating pretreatment agent is prepared by an immersion method or an equal pH coprecipitation method; and 2, performinghydrogenating pretreatment, namely dissolving crude carbon nine resin by using a solvent, filtering and separating and hydrotreating on a fixed bed high-pressure hydrogenation device, wherein the resin concentration is 25 to 33 weight percent according to the weight ratio of the resin to the solvent; the solvent comprises chain-shaped or cyclic saturated hydrocarbon, aromatic hydrocarbon or mixedhydrocarbon; the temperature of the high-pressure hydrogenation reaction is between 250 and 350 DEG C; the pressure is 8.0 to 20.0 MPa; the liquid volume airspeed is 0.5 to 2 h ; the hydrogen oil volume ratio is (500-1,200):1; and the sulfur content and the nitrogen content of the product subjected to the hydrogenating pretreatment are less than 10mu g/g.

Method for performing hydrogenating pretreatment on carbon nine petroleum resin

Method for producing clean diesel by full liquid phase hydrogenation

The invention belongs to the technical field of catalysis, and relates to a preparation method of a catalyst for hexone synthesis by acetone hydrogenation and an application; the catalyst is composed of active component nickel loaded on an alumina carrier modified by transition metal oxides The preparation method of the catalyst comprises two procedures: the first one is that transition metal oxides and alumina are mixed, molded, dried, roasted, and subject to hydro-thermal treatment, and the active component Ni is immersed to obtain the catalyst; the second one is that an alumina carrier is prepared firstly, then transition metal oxides and Ni are introduced by an immersion method, and finally hydro-thermal treatment is performed to obtain the catalyst The catalyst of the invention adopts non-noble metal as the main active component, is simple in preparation, low in cost, strong in raw material adaptability, long in service life, and high in activity and selectivity, and combines three catalytic functions of acetone condensation, dehydration, and hydrogenation as a whole, and the reaction process flow is simplified greatly

Preparation method of catalyst for hexone synthesis by acetone hydrogenation and application

The invention relates to a preparation method of a catalyst for coproducing isopropanol and methyl isobutyl ketone by acetone hydrogenation. The catalyst comprises an alumina carrier and Ni and Mg loaded on the gamma-Al2O3 carrier, and particularly comprises, by total weight, 10-18% of the Ni, 3-8% of the Mg and the balance alumina; and the BET specific surface area of the catalyst ranges from 100m /g to 180m /g, and the pore volume of the catalyst ranges from 0.35mL/g to 0.55mL/g. The preparation method includes steps of (1), preparing the carrier by details of weighing pseudo-boehmite powder, adding binders and extrusion assistants into the pseudo-boehmite powder, forming by strip extrusion or granulating by rotation, drying and calcining, cooling to reduce temperature so as to obtain the stripped or spherical carrier; (2), impregnating the carrier into magnesium nitrate by details of loading a magnesium additive onto the carrier by means of saturated impregnation, drying and then calcining for 2-6 hours at the temperature ranging from 400 DEG C to 500 DEG C; (3), loading the actively metallic nickel by details of impregnating for 10-24 hours and calcining for 2-6 hours at the temperature ranging from 350 DEG C to 480 DEG C; and (4), loading the actively metallic nickel again by details of drying a semi-finished product, impregnating the dried semi-finished product into impregnation liquid of nickel nitrate again, repeating the step (3) once, and calcining the semi-finished product for 2-4 hours at the temperature ranging from 400 DEG C to 450 DEG C so as to obtain the finished catalyst.

Haibin Yu

Papers

Method for preparing desulfurizer capable of absorbing catalytic cracking gas at high selection

Method for performing hydrogenating pretreatment on carbon nine petroleum resin

Method for producing clean diesel by full liquid phase hydrogenation

Preparation method of catalyst for hexone synthesis by acetone hydrogenation and application

Preparation method of catalyst for coproducing isopropanol and methyl isobutyl ketone by acetone hydrogenation