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A method of removing solid particles from oil slurry by heat treatment centrifugal sedimentation-electrostatic method

A centrifugal sedimentation and removal technology, which is applied in the treatment of hydrocarbon oil, multi-stage series refining process treatment, and petroleum industry, etc. It can solve the problem of difficult to adapt to the complex nature of catalytic oil slurry, and achieve high desolidification efficiency and economical improvement. Value, effect of simple equipment

Active Publication Date: 2021-06-18
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve the shortcomings of the existing electrostatic desolidification technology and the difficulty in adapting to the complex properties of my country's catalytic oil slurry, the present invention discloses a new process for efficiently removing solid particles from catalytic cracking oil slurry

Method used

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  • A method of removing solid particles from oil slurry by heat treatment centrifugal sedimentation-electrostatic method
  • A method of removing solid particles from oil slurry by heat treatment centrifugal sedimentation-electrostatic method
  • A method of removing solid particles from oil slurry by heat treatment centrifugal sedimentation-electrostatic method

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Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1. A refinery catalytic cracking oil slurry A is selected to carry out the desolidification research of the present invention, and the basic properties of the oil slurry X are shown in Table 1.

[0022] Table 1 Raw material oil slurry X property table

[0023]

[0024] (1) Pour 1 MPa of nitrogen into the centrifugal settling tank. The temperature of the centrifugal settling tank is maintained at about 350°C and the centrifugal force is 1000×g. The oil slurry X is heat-treated and centrifugally settled in the centrifugal settling tank for about 10 hours.

[0025] (2) Pump 90% of the oil slurry in the upper layer obtained after heat treatment and centrifugal sedimentation into an electrostatic tower for electrostatic treatment. The electrostatic separation temperature is 160°C, the processing voltage is 15kV DC high voltage, and the processing time is 25 minutes.

[0026] The property change of oil slurry X after being treated by the method of the present i...

Embodiment 2

[0039] Example 2. The desolidification research of the present invention was carried out by using catalytic cracking oil slurry Y from different refineries. The basic properties of the oil slurry Y are shown in Table 4.

[0040] Table 4 Raw material oil slurry Y property table

[0041]

[0042]

[0043] (1) Pour 1MPa nitrogen into the centrifugal settling tank, maintain the temperature of the centrifugal settling tank at about 350°C, and the centrifugal force at 1000×g, heat-treat the oil slurry Y in the centrifugal settling tank for about 10 hours.

[0044] (2) Pump 90% of the oil slurry in the upper layer obtained after heat treatment and centrifugal sedimentation into an electrostatic tower for electrostatic treatment. The electrostatic separation temperature is 160°C, the processing voltage is 15kV DC high voltage, and the processing time is 25 minutes.

[0045] The property change of oil slurry Y after being treated by the method of the present invention is shown i...

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Abstract

The invention provides a method for deep removal of solid particles in oil slurry by heat treatment centrifugal sedimentation-electrostatic method, which mainly includes the following two steps: (1) directly pumping the oil slurry thrown out of the catalytic cracking unit into a centrifugal settling tank for heat treatment Centrifugal sedimentation; (2) Pump the 60-99% oil slurry in the upper layer after heat treatment and centrifugal sedimentation directly into the electrostatic tower for electrostatic desolidification. The invention preliminarily improves the properties of the oil slurry before electrostatic treatment, can effectively improve the electrostatic desolidification efficiency, and thereby achieves the purpose of deep desolidification of the oil slurry. The solid content of the treated oil slurry can be reduced to 100μg·g ‑1 Within, to meet the solid content requirements of raw materials for high value-added products.

Description

technical field [0001] The invention provides a new process for deep removal of solid particles in catalytic cracking (FCC) oil slurry, especially a new method for removing the solid content of FCC oil slurry with complex properties such as high density, high viscosity and high solid content. Background technique [0002] Catalytic cracking is currently a commonly used process technology for lightening heavy oil, and a large number of by-products will be produced after the reaction of the catalytic cracking unit, of which the most abundant is catalytic cracking (FCC) oil slurry. According to statistics, my country's annual output reaches More than 9 million tons. FCC oil slurry contains more aromatic components, among which condensed ring aromatics with 3 to 5 rings have the most content. It is a high-quality raw material for the production of high value-added chemical products such as carbon black, carbon fiber and needle coke. However, because the oil slurry contains more ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G53/02
CPCC10G53/02C10G2300/208
Inventor 郭爱军靳正正焦守辉王峰王丽丽潘会会刘文超杨政乌穆·凯丽·依布拉欣陈坤刘贺沐宝泉刘东王宗贤
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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