Preparation and application method of self-vulcanization oil-soluble multi-metal composite catalyst

A composite catalyst, self-sulfided oil technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., to achieve the effects of convenient low-cost large-scale industrial production, excellent hydrogenation activity, rapid and stable dispersion

Pending Publication Date: 2021-02-19
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of oil-soluble catalysts by alkyl-substituted thiocarbonates for the hydrocracking of low-quality heavy oil slurry beds has not been studied at present. Therefore, the preparation of new self-sulfurized oil-soluble heavy oil slurry bed hydrocracking catalysts with higher activity is an important step. Technical problems that need to be solved urgently in this field

Method used

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  • Preparation and application method of self-vulcanization oil-soluble multi-metal composite catalyst
  • Preparation and application method of self-vulcanization oil-soluble multi-metal composite catalyst
  • Preparation and application method of self-vulcanization oil-soluble multi-metal composite catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Weigh 74 g of n-butanol, heat up to 80 °C, add 40 g of sodium hydroxide, keep the reaction temperature at 80 °C, and react for 0.5 hours to obtain sodium butoxide; weigh 160 g of carbon disulfide, add sodium n-butoxide to carbon disulfide , keeping the reaction temperature at 30°C and stirring for 5 hours to obtain an alkyl-substituted thiocarbonate.

[0037]Weigh 50 g nickel nitrate hexahydrate, 50 g cobalt nitrate hexahydrate, 44 g ferric nitrate, add 300 mL distilled water, stir to dissolve, add alkyl-substituted thiocarbonate, reaction temperature 95 ° C, stir for 2 hours, The resulting reaction product was cooled to room temperature, and the water phase was removed by filtration to obtain a self-sulfurized oil-soluble multi-metal composite catalyst precursor, which was named N-1.

[0038] Under the condition of stirring, add the oil-soluble multi-metal composite catalyst precursor N-1 into the co-dispersant catalytic cracking diesel oil, catalytic cracking diesel o...

Embodiment 2

[0040] Take by weighing 88 g of n-amyl alcohol, heat up to 80 ° C, add 40 g of sodium hydroxide, keep the reaction temperature at 80 ° C, and react for 2 hours to obtain sodium n-pentoxide; weigh 160 g of carbon disulfide, add sodium n-pentoxide to In carbon disulfide, keep the reaction temperature at 30° C., and stir for 4 hours to obtain an alkyl-substituted thiocarbonate.

[0041] Weigh 40 g nickel chloride hexahydrate, 40 g cobalt chloride hexahydrate, 48 g ferric chloride hexahydrate, add 360 mL distilled water, stir to dissolve, add alkyl substituted thiocarbonate, reaction temperature 80 °C, Stirring and reacting for 2 hours, the resulting reaction product was cooled to room temperature, and the water phase was removed by filtration to obtain a self-sulfurized oil-soluble multi-metal composite catalyst precursor, which was named N-2.

[0042] Under stirring conditions, add the oil-soluble multi-metal composite catalyst precursor N-2 into the co-dispersant catalytic crac...

Embodiment 3

[0044] Take by weighing 108 g benzyl alcohol, be warming up to 90 DEG C, add 40 g sodium hydroxide, keep reaction temperature 90 DEG C, reaction time 2 hours, obtain sodium benzyl alkoxide; Take by weighing 200 g carbon disulfide, join sodium benzyl alkoxide in carbon disulfide, Keeping the reaction temperature at 30°C, the reaction was stirred for 5 hours to obtain aryl-substituted thiocarbonate.

[0045] Weigh 40 g of nickel chloride hexahydrate, 40 g of cobalt chloride hexahydrate, and 48 g of ferric chloride hexahydrate, add 360 mL of distilled water, stir to dissolve, add alkyl-substituted thiocarbonate, and the reaction temperature is 90 ° C. Stirring and reacting for 2 hours, the resulting reaction product was cooled to room temperature, and the water phase was removed by filtration to obtain a self-sulfurized oil-soluble multi-metal composite catalyst precursor, which was named N-3.

[0046] Under the condition of stirring, add the oil-soluble multi-metal composite cat...

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Abstract

The invention relates to a preparation and application method of a self-vulcanization oil-soluble multi-metal composite hydrocracking catalyst, which comprises the following steps: adding sodium polyalcohol into carbon disulfide, and reacting to obtain alkyl sodium dithiocarbonate; and then adding alkyl sodium dithiocarbonate into a mixed solution of a VIII group metal iron source, a cobalt sourceand a nickel source to react to prepare the oil-soluble multi-metal composite catalyst. By adding an auxiliary dispersing agent, the multi-metal composite catalyst can be quickly, mutually and stablydispersed in inferior heavy oil, can be self-vulcanized and decomposed to form nanoscale dispersed active metal composite sulfide, and has excellent hydrogenation activity and coking inhibition performance. The catalyst provided by the invention has the characteristics of simple preparation process, no need of vulcanization, small catalyst addition amount, simple application and the like, is suitable for a low-cost slurry reactor hydrocracking process of high-metal, high-carbon-residue and high-viscosity inferior heavy oil, and is also suitable for a slurry reactor hydrogenation pretreatmentpurification process of waste lubricating oil.

Description

technical field [0001] The invention relates to the technical field of petrochemical industry, more specifically, the invention relates to a preparation and application method of a self-sulfurized oil-soluble multi-metal composite catalyst. Background technique [0002] At present, with the decrease of conventional oil resources and the maturity of heavy oil extraction technology, the production of crude oil presents a trend of heavy and inferior quality. Refining and chemical enterprises are faced with the problem of lightening a large amount of domestically produced and imported inferior heavy oil. Slurry bed hydrocracking technology can process low-quality heavy oil raw materials with high metals, high carbon residues, and high sulfur, and has high conversion rate and high yield of light oil, which is an excellent process in line with the development trend of improving resource utilization. At present, foreign companies have carried out research on heavy oil slurry bed h...

Claims

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Application Information

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IPC IPC(8): B01J27/043B01J37/20C10G47/06C10M175/00
CPCB01J27/043B01J37/20C10G47/06C10M175/0083C10M175/0016C10G2400/10C10G2400/04C10G2400/06
Inventor 刘宾柴永明吕鸿洋刘晨光张明东潘原李奕川柳云骐
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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