Oil-soluble Fe-Ni bimetallic catalyst, and preparation method and application of bimetallic catalyst

Abstract

The invention discloses an oil-soluble Fe-Ni bimetallic catalyst, and a preparation method and application of the bimetallic catalyst. Active ingredients of the catalyst are ferrum and nickel which are used for coal-oil hydrogenation coprocessing; a mole ratio of ferrum to nickel is 9:1-1:3; and the weight percent of ferrum and nickel in the catalyst is 3-8%. The preparation method of the oil-soluble Fe-Ni bimetallic catalyst comprises the following steps of dissolving fatty acid salt, ferric salt and nickel salt in deionized water, adding a non-polar solvent and an alcohol substance to a mixed solution, performing a heating reaction on the solution, cooling the solution to a room temperature after the reaction, transferring a product to a separating funnel for standing, separating a water phase, washing an organic phase with the deionized water, and then drying the organic phase in an oven to obtain the oil-soluble Fe-Ni bimetallic catalyst. According to the catalyst prepared by the method, adding of little nickel makes up the disadvantage of insufficient activity of a ferric catalyst; a synergistic effect exists between ferrum and nickel; the hydrogenation activity is high; a coke inhibition effect is good; and a conversion rate of coal is high.

Description

technical field [0001] The invention relates to the technical field of coal-oil co-processing, in particular to an oil-soluble Fe-Ni bimetallic catalyst and its preparation method and application. Background technique [0002] Coal-oil co-processing technology, also known as coal-oil co-refining technology, is developed from direct coal liquefaction. It can simultaneously process and upgrade coal and heavy oil resources. It is one of the effective ways to rationally utilize oil and coal resources. , is also a clean coal utilization technology. Its essence is to use petroleum-based heavy oil such as natural heavy crude oil or asphalt, normal residue, reduced residue and various secondary processing residues as the solvent for coal liquefaction. During the co-processing process, solid coal is converted into liquid fuel, and then Light fuels such as gasoline and diesel are produced: on the other hand, heavy oils can be converted into lower boiling fractions at the same time. ...

AI Technical Summary

Problems solved by technology

At present, most coal-oil hydroprocessing co-refining catalysts are mainly derived from coal direct liquefaction catalysts, and there are few catalysts specially developed for coal-oil hydroprocessing co-refining systems

Traditional heavy oil hydrogenation catalysts and metal halide catalysts have high catalytic activity, but they cannot meet the economic and environmental requirements of coal-oil hydrogenation co-refining catalysts, and they still have a long way to go before large-scale industrial applications

Iron-based catalysts have attracted widespread attention because of their low price, less pollution, and no need for recycling. It is difficult to put into practical application, so it is hoped that iron-based catalysts can be compounded with relatively small amounts of high-priced Mo, Ni, etc., and it is hoped that while improving the activity of iron-based catalysts, the amount of high-priced metals can be reduced, as CN102309972A discloses an oil-coal Hydrogenation co-smelting catalyst and co-smelting method thereof, the precursor of the main catalyst is water-soluble iron salt, the precursor of the sub-catalyst is water-soluble and / or oil-soluble molybdenum salt, and a small amount of molybdenum with high activity in hydrocracking Introduce iron-based catalysts for oil-coal hydrogenation co-refining. When the molar ratio of Fe and Mo is within a certain range, there is a strong synergistic effect between the two, and it has high cracking and hydrogenation activities.

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