Liquid-phase hydrodesulfurization reaction-separation coupled refining method for crude oil in petroleum refining

A liquid-phase hydrogenation and petroleum refining technology, which is applied in the fields of refining with alkaline aqueous solution, petroleum industry, hydrogenation treatment process, etc., can solve the problems of reaction temperature, high pressure, difficult operation, high production cost, etc., and achieve reduction Equipment investment, elimination of feedback inhibition, effect of saving raw materials

Active Publication Date: 2016-01-20
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above three methods all have the problems of high reaction temperature and pressure, difficult operation, high production cost, and huge investment in equipment, and generally small and medium refineries cannot adopt them.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] A continuous stirring reactor with two tanks connected in series is used. Before the reaction, the reactor undergoes air replacement, leak detection operation, and hydrorefining catalyst is added, and the petroleum refining crude oil product A in the storage tank is pressed into the reactor with a high-pressure metering pump. Replace the air with nitrogen, repeat 3 times, and replace the air; use hydrogen for leak detection, close the valves, make the hydrogen pressure in the kettle a positive pressure (0.3MPa), turn on the reactor heater to preheat; let it stand for 5 minutes , check the airtightness of the reaction kettle; if there is no air leakage after the leak detection operation, you can add a hydrorefining catalyst with 5% of the mass of petroleum refining crude oil product A from the catalyst addition hopper, and the metal components are calculated as hydrogenation catalysts in terms of elements 5% of the mass of the refined catalyst, the metal component is Mo, ...

Embodiment 2

[0038] A continuous stirring reactor with two tanks connected in series is adopted. Before the reaction, the reactor undergoes air replacement, leak detection operation, and hydrorefining catalyst is added, and the petroleum refining crude oil G in the storage tank is pressed into the reactor with a high-pressure metering pump. Replace the air with nitrogen, repeat 5 times, and replace the air; use hydrogen for leak detection, close the valves, make the hydrogen pressure in the kettle a positive pressure (0.5MPa), turn on the reactor heater to preheat; let it stand for 5 minutes , check the airtightness of the reaction kettle; if there is no air leakage after the leak detection operation, you can add a hydrorefining catalyst with a mass of 3% of the petroleum refining crude oil product G from the catalyst addition hopper, and the metal components are calculated as hydrogenation catalysts in terms of elements. 3% of the mass of the refined catalyst, the metal component is W, and...

Embodiment 3

[0040] A continuous stirring reactor with two tanks connected in series is adopted. Before the reaction, the reactor undergoes air replacement, leak detection operation, and hydrorefining catalyst is added, and the petroleum refining crude oil product C in the storage tank is pressed into the reactor by a high-pressure metering pump. Replace the air with nitrogen, repeat 4 times, and replace the air; use hydrogen for leak detection, close the valves, make the hydrogen pressure in the kettle positive (0.4MPa), turn on the reactor heater to preheat; let it stand for 5 minutes , check the airtightness of the reaction kettle; if there is no air leakage after the leak detection operation, you can add a hydrorefining catalyst with a mass of 5% of the petroleum refining crude oil product C from the catalyst addition hopper, and the metal component is calculated as the hydrogenation catalyst in terms of elements. 20% of the mass of the refined catalyst, the metal component is Ni, and t...

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Abstract

The invention discloses a liquid-phase hydrogenation desulfurization reaction-separation coupled refining method for crude oil products in petroleum refining, which comprises the following steps: (1) mixing the crude oil products and hydrogen into a hydrogenation reactor, and refining them in hydrodesulfurization The hydrodesulfurization reaction is carried out under the action of the catalyst; the dosage of the hydrodesulfurization refining catalyst is 1.0%-10% of the crude oil quality, the hydrodesulfurization refining catalyst is a metal-supported catalyst, and the carrier is heavy oil catalytic cracking waste catalyst; (2) The gas-liquid separation of the above reaction products is carried out, and the gas phase stream is continuously extracted, washed and neutralized with lye; the liquid phase stream is extracted, which is a refined oil product. The invention can process crude oil refined from high-sulfur and high-nitrogen petroleum, and carry out hydrogenation desulfurization reaction-separation coupled refining of crude oil under relatively mild temperature and pressure operating conditions, greatly reducing equipment investment and operating costs.

Description

technical field [0001] The invention relates to the technical field of refinement of petroleum refining crude oil products, in particular to a liquid-phase hydrogenation desulfurization reaction-separation coupling refining method of petroleum refining crude oil products. Background technique [0002] Due to the rapid development of my country's economy, the demand for light oil products continues to rise. In order to increase the yield of light oil, most refineries tap the potential of residual oil and develop heavy oil catalytic cracking technology. After catalytic cracking of heavy oil, the yield of light oil can reach 66%, which can be used not only as gasoline and diesel products, but also as a high-quality raw material for petrochemical (ethylene production). However, the light diesel oil obtained from heavy oil catalytic cracking contains a large amount of olefins and a considerable amount of sulfur, nitrogen, oxygen impurities, etc., and the product quality is poor,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G67/02C10G45/08
CPCC10G19/02C10G45/08C10G67/10C10G2300/10C10G2300/1037
Inventor 陈小鹏梁杰珍王琳琳陈献锟韦小杰童张法
Owner GUANGXI UNIV
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