A composite catalyst for gasoline hydrogenation

Abstract

The invention discloses a composite catalyst for hydrogenation of gasoline. The steps are as follows: 1) Carrier preparation: a certain amount of aluminum chloride and sodium silicate are respectively prepared with aluminum chloride solution and sodium silicate solution; molecular sieves are soaked into the aluminum chloride solution, take it out and dry it naturally, then soak the molecular sieve into the sodium silicate solution and dry it naturally; the dried molecular sieve can be roasted at a certain roasting temperature to obtain the coated molecular sieve carrier; 2) The catalyst Preparation: Use the mixed solution of ferric nitrate, nickel nitrate and ammonium molybdate as the impregnating solution, soak the carrier in the impregnating solution for 2 minutes at room temperature, dry at 120°C for 30 minutes; repeat the operation 2-5 times, and burn at 500°C for 4 hours, The composite catalyst can be obtained after natural cooling. The invention has suitable pore structure distribution and active metal, and has the characteristics of stable physical and chemical properties, high specific surface area, pore volume and high desulfurization selectivity, and the raw materials are easy to obtain and the processing is simple.

Description

technical field [0001] The invention belongs to the technical field of gasoline processing, in particular to a composite catalyst for gasoline hydrogenation. Background technique [0002] Hydrocracking is a process in the petrochemical industry, that is, in the process of petroleum refining, under relatively high pressure and temperature, hydrogen is used as a catalyst to make heavy oil undergo hydrogenation, cracking and isomerization reactions, and convert it into light The processing of high-quality oil (gasoline, kerosene, diesel or catalytic cracking, cracking raw materials for olefins). It differs from catalytic cracking in that the catalytic cracking reaction is accompanied by the hydrogenation reaction of hydrocarbons. Hydrocracking is essentially an organic combination of hydrogenation and catalytic cracking processes, which enables heavy oil products to produce light oil products such as gasoline, kerosene and diesel oil through catalytic cracking reactions, preve...

AI Technical Summary

Problems solved by technology

Although hydrocracking has many advantages, it is not widely used like catalytic cracking because it operates under high pressure, requires more alloy steel, consumes more hydrogen, and has higher investment.