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Pretreatment method for catalytic oil slurry for needle coke production

A technology of catalytic oil slurry and needle coke, which is only applied in the direction of multi-stage serial refining process treatment, etc., to achieve the effects of short process, reduced equipment usage, and increased production capacity

Inactive Publication Date: 2014-01-08
HULUDAO DESIGN INST PETROCHINA NORTHEAST REFINING & CHEM ENG
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Problems solved by technology

The method solves the technical problem of catalytic oil slurry pretreatment through catalytic oil slurry vacuum distillation and extraction process

Method used

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Experimental program
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Effect test

Embodiment Construction

[0019] 1. Solvent extraction:

[0020] The catalytic oil slurry from the tank area is pressurized by the raw material pump, then the temperature is raised to 250°C through the heat exchanger, and then enters the mechanical precision filter to filter and remove the catalyst particles of the catalytic oil slurry.

[0021] The filtered catalytic oil slurry is heat-exchanged through the heat exchanger, and the cooler is adjusted to 90°C to enter the lower part of the solvent extraction tower. The solvent liquid separation tank is pressurized by the feed pump, and the heat is exchanged to the extraction temperature through the solvent heat exchanger. After 65 ° C, it enters the upper part of the extraction tower; the raw material oil and the solvent are in reverse contact in the tower for liquid-liquid extraction, and the pressure at the top of the extraction tower is 0.5 MPa. After extraction, the tower top raffinate and tower bottom extract respectively enter the solvent recovery...

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Abstract

The invention provides a pretreatment method for producing catalytic oil slurry for the needle coke production. The pretreatment method takes catalytic oil slurry as the raw material, and then carries out a pretreatment for the catalytic oil slurry through the following steps: extracting solvent, recycling and processing solvent from the raffinate, recycling solvent from the extracted liquid, and evaporating the target product. The pretreatment method can carry out oil extraction and reduced pressure distillation for the catalytic oil slurry to purify the oil slurry, which is suitable for being used as a raw material for the needle coke production, has the advantages of short process, energy saving, reduction on equipment usage, and increasing on yield, and can be used as a method for catalytic oil slurry pretreatment for needle coke production.

Description

technical field [0001] The invention proposes a treatment method for petroleum products in the petrochemical field, in particular a pretreatment method for producing needle coke catalytic oil slurry. Background technique [0002] At present, catalytic cracking oil slurry is mainly used as a blending component of fuel oil or directly used as heavy fuel oil, which has low economic benefits. There are also some companies that directly send the catalytic oil slurry to the ordinary delayed coking unit for blending. Catalytic oil slurry + R8 c s + I) N" p are mainly polycyclic aromatic hydrocarbons with no side chains, few side chains and short side chains, which are rarely converted into high value-added gasoline and diesel in the ordinary delayed coking reaction process The distillate mainly produces gas and coke through dehydrogenation and condensation, and the coke yield is at least 40%. The yield of gasoline and diesel is only about 20%, and after coking and processing oil s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G53/04
Inventor 张宏利朱燕玲张冲郭小宇刘丽新何印红赵娟周超强
Owner HULUDAO DESIGN INST PETROCHINA NORTHEAST REFINING & CHEM ENG
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