Coal tar and residual oil combined treatment process

A treatment process, coal tar technology, applied in hydroprocessing process, petroleum industry, hydrocarbon oil treatment, etc., can solve problems such as low liquid yield, easy blockage of filter, incomplete removal of catalyst powder, etc.

Pending Publication Date: 2020-05-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The traditional heavy oil thermal processing technology has the problems of low liquid yield and serious pollution, while the catalytic oil slurry obtained by the heavy oil catalytic cracking technology has the problem of high solid content and small particle size, and there is a loss of liquid yield when the catalytic oil slurry is treated by conve

Method used

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  • Coal tar and residual oil combined treatment process
  • Coal tar and residual oil combined treatment process
  • Coal tar and residual oil combined treatment process

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Experimental program
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Effect test

Embodiment 1

[0052] Embodiment 1 uses residual oil and coal tar whole distillate as raw materials, adopts coal tar and residual oil combined treatment process of the present invention, and residual oil and coal tar heavy fraction enters the first hydroprocessing unit (the first hydroprocessing unit adopts fixed bed Reactor), hydrogenation reaction is carried out in the presence of hydrogen and the first hydrotreating catalyst; the liquid phase effluent obtained after the reaction directly enters the catalytic cracking unit without fractionation, and the reaction product is separated to obtain dry gas, liquefied gas, catalytic Gasoline, catalytic diesel, catalytic heavy cycle oil and catalytic oil slurry; the catalytic oil slurry is firstly mixed with the first additive coal tar distillate oil, the ratio of catalytic oil slurry to the first additive is 19:1, and the catalytic oil slurry and the second additive The mixing treatment temperature and mixing treatment time of the first auxiliary ...

Embodiment 2

[0054] Embodiment 2 uses residual oil and coal tar whole distillate as raw materials, adopts coal tar and residual oil combined treatment process of the present invention, and residual oil and coal tar heavy fraction enters the first hydroprocessing unit (the first hydroprocessing unit adopts fixed bed Reactor), hydrogenation reaction is carried out in the presence of hydrogen and the first hydrotreating catalyst; the liquid phase effluent obtained after the reaction directly enters the catalytic cracking unit without fractionation, and the reaction product is separated to obtain dry gas, liquefied gas, catalytic Gasoline, catalytic diesel, catalytic heavy cycle oil and catalytic oil slurry; catalytic oil slurry is first mixed with the first additive coal tar distillate and the second additive decahydronaphthalene, and the catalytic oil slurry is mixed with the first additive and the second additive The ratios are 20:1 and 70:1 respectively, the mixing treatment temperature and...

Embodiment 3

[0056] Embodiment 3 uses residual oil and coal tar whole distillate as raw materials, adopts coal tar and residual oil combined treatment process of the present invention, and residual oil and coal tar heavy fraction enters the first hydroprocessing unit (the first hydroprocessing unit adopts fixed bed Reactor), hydrogenation reaction is carried out in the presence of hydrogen and the first hydrotreating catalyst; the liquid phase effluent obtained after the reaction directly enters the catalytic cracking unit without fractionation, and the reaction product is separated to obtain dry gas, liquefied gas, catalytic Gasoline, catalytic diesel oil, catalytic heavy cycle oil and catalytic oil slurry; the catalytic oil slurry is mixed with the first additive coal tar distillate oil, the ratio of catalytic oil slurry to the first additive is 21:1, and the catalytic oil slurry and the second additive The mixing treatment temperature and mixing treatment time of the first auxiliary agen...

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Abstract

The invention discloses a coal tar and residual oil combined treatment process. The combined treatment process comprises the following steps: introducing inferior heavy oil into a first hydro-processing unit; carrying out a hydrogenation reaction in the presence of hydrogen and a first hydro-processing catalyst, allowing a liquid phase effluent obtained after the reaction to directly enter a catalytic cracking unit without fractionation, separating a reaction product to obtain catalytic slurry oil, mixing the catalytic slurry oil with a first auxiliary agent, carrying out settlement separationafter mixing, separating to obtain a first material and residues; introducing the first material into a second hydro-processing unit, carrying out a hydrogenation reaction under the action of a second hydro-processing catalyst and hydrogen, introducing a liquid-phase effluent obtained after the reaction into a clarification unit, obtaining clarified oil after separation, and subjecting clarifiedoil to further solid-liquid separation to obtain purified oil slurry. According to the combined process, solid impurities in the oil slurry and the coal tar full fraction can be efficiently removed, meanwhile, the liquid yield is basically not reduced, and the utilization rate of residual oil and the coal tar full fraction is greatly increased.

Description

technical field [0001] The invention belongs to the field of oil refining and chemical industry, and in particular relates to a combined treatment process of coal tar and residual oil. Background technique [0002] As crude oil becomes heavier and inferior, the proportion of residual oil, which is the heaviest component in crude oil, continues to increase. With increasingly stringent environmental protection requirements, the efficient use of heavy oil, especially residual oil, is not only related to whether it can meet The requirements of cleaner production have also become an important factor affecting the economic benefits and even the survival of enterprises. From the traditional processing methods of residual oil, residual oil processing can be divided into two routes: hydrogenation and decarburization. Decarburization mainly refers to thermal cracking, visbreaking and solvent deasphalting, etc., while hydrogenation routes can be divided into fixed Bed hydrogenation, s...

Claims

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Application Information

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IPC IPC(8): C10G69/04
CPCC10G69/04C10G2300/1003
Inventor 代萌孟兆会陈博葛海龙姜来杨涛
Owner CHINA PETROLEUM & CHEM CORP
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