Heavy oil pre-hydrogenation viscosity reduction catalyst for coal-oil co-processing and preparation method thereof

A catalyst, pre-hydrogenation technology, applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, etc. Cost, less addition, environment-friendly effect

Pending Publication Date: 2022-04-12
CCTEG CHINA COAL RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no catalyst specially developed for heavy oil pretreatment to reduce oil viscosity

Method used

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  • Heavy oil pre-hydrogenation viscosity reduction catalyst for coal-oil co-processing and preparation method thereof
  • Heavy oil pre-hydrogenation viscosity reduction catalyst for coal-oil co-processing and preparation method thereof
  • Heavy oil pre-hydrogenation viscosity reduction catalyst for coal-oil co-processing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A preparation method for a heavy oil pre-hydrogenation viscosity-reducing catalyst for kerosene co-refining, the method comprising the steps of:

[0036] In a 500ml stirred tank, add 0.05mol ammonium molybdate to the mixed solution containing 0.04mol di-n-butylamine, 0.1mol tetrahydronaphthalene and 0.01mol polyethylene glycol, and raise the temperature of the stirred tank to 60°C under normal pressure. React for 30 minutes. Lower the temperature of the stirred tank to room temperature, add 0.05 mol carbon disulfide and 0.05 mol thioacetamide, then fill the stirred tank with nitrogen to a pressure of 0.1 MPa at room temperature, seal the stirred tank, raise the temperature to 90°C, and react for 4 hours. After the reaction, the reaction product was filtered, washed with 5 mol of toluene, and dried at 110° C. under a vacuum of 1 kPa to obtain a catalyst (code CAT1) with a yield of 78% and a Mo content of 25%.

[0037] The scanning electron microscope image of the cataly...

Embodiment 2

[0041] A preparation method for a heavy oil pre-hydrogenation viscosity-reducing catalyst for kerosene co-refining, the method comprising the steps of:

[0042] In a 500ml stirred tank, add 0.05mol sodium molybdate to the mixed solution of 0.04mol diisooctylamine, 0.3mol toluene and 0.01mol methyl oleate, raise the temperature of the stirred tank to 80°C, under the condition of nitrogen protection under normal pressure Reaction 60min. Lower the temperature of the stirred tank to room temperature, add 0.05mol carbon disulfide and 0.05mol sodium sulfide, seal the stirred tank, raise the temperature to 120°C, and react for 6h. After the reaction, the reaction product was filtered, washed with 5 mol methanol aqueous solution, and dried at 110° C. under a vacuum of 1 kPa to obtain a catalyst (number CAT2) with a yield of 80% and a Mo content of 27%.

Embodiment 3

[0044] A preparation method for a heavy oil pre-hydrogenation viscosity-reducing catalyst for kerosene co-refining, the method comprising the steps of:

[0045] In a 500ml stirred tank, add 0.03mol sodium molybdate and 0.03mol ammonium molybdate to the mixed solution of 0.05mol di-n-butylamine, 0.5mol n-tetradecane and 0.02mol polyethylene glycol monomethyl ether, and stir The temperature of the kettle was raised to 80° C., and the reaction was carried out for 60 minutes under the protection of nitrogen under normal pressure. Lower the temperature of the stirred tank to room temperature, add 0.05 mol carbon disulfide and 0.05 mol sodium sulfide, fill the tank with nitrogen to a pressure of 0.1 MPa at room temperature, seal the stirred tank, raise the temperature to 100°C, and react for 5 hours. After the reaction, the reaction product was filtered, washed with 5 mol xylene and ethanol successively, and dried at 110° C. under a vacuum of 1 kPa to obtain a catalyst (code CAT3) w...

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Abstract

The invention relates to a heavy oil pre-hydrogenation viscosity reduction catalyst for coal and oil co-processing and a preparation method thereof, the preparation method comprises the following steps: 1) a molybdenum source, organic amine and solvent oil are heated and stirred uniformly for a reaction, the molar ratio of the molybdenum source to the organic amine to the solvent oil is 1: (0.5-3.0): (0.5-20), the reaction temperature is 10-150 DEG C, and the reaction time is 10-120 min; (2) the reaction temperature is reduced to the room temperature, a vulcanizing agent is added, the molar ratio of the vulcanizing agent to the molybdenum source is (0.2-3): 1, the temperature is increased to 60-150 DEG C, the reaction pressure is 0.01-2 MPa, and the reaction continues for 0.5-12 h; and 3) washing and drying the reaction product to obtain the catalyst. The catalyst has the advantages of high hydrogenation activity, low coke yield, good stability and the like.

Description

technical field [0001] The invention relates to the field of petrochemical technology, in particular, the invention relates to a heavy oil pre-hydrogenation viscosity-reducing catalyst for kerosene co-refining and a preparation method thereof. Background technique [0002] Kerosene co-refining is a special form of direct coal liquefaction. Coal powder and heavy oil are mixed in a certain proportion, and reacted with hydrogen under the conditions of high temperature, high pressure and catalyst to convert coal and heavy oil into light and medium oil and a small amount of Process technology for hydrocarbon gases. Kerosene co-refining technology is the coupling of direct coal liquefaction technology and heavy oil processing technology, which makes full use of the synergistic effect of coal and heavy oil in the hydrogenation reaction, greatly improving the liquid yield. Compared with the direct coal liquefaction technology, it has low investment, high energy efficiency, high oil...

Claims

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Application Information

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IPC IPC(8): B01J35/02B01J31/22B01J31/12
Inventor 王光耀王熺乾李阳赵渊李培霖谷小会孟德昌石智杰
Owner CCTEG CHINA COAL RES INST
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