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Electrostatic separation device and process for removing solid particles in catalytic cracking slurry oil and slurry oil purification device

A technology of catalytic cracking oil slurry and electrostatic separation, which is applied in the petroleum industry, processing hydrocarbon oil, and refining through electric/magnetic fields, etc., can solve problems such as difficulty in normal and stable operation of the device, increase in the conductivity of the medium, and increase in the frequency of backwashing, etc. It can solve the effect of excessive current and frequent tripping of the device, increase the space of the settlement area, and avoid collision and anti-mixing.

Active Publication Date: 2020-07-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during long-term operation, due to the large difference in properties between domestic oil slurry and foreign oil slurry, the content of solid particles and polar components in domestic oil slurry is high, resulting in an increase in the conductivity of the medium and a decrease in purification efficiency. The power supply frequently trips, the frequency of backwashing increases, and the operation becomes more difficult
Because its electrostatic separation effect is adversely affected by many factors, it is difficult for the device to operate normally and stably, and it has been shut down at present

Method used

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  • Electrostatic separation device and process for removing solid particles in catalytic cracking slurry oil and slurry oil purification device
  • Electrostatic separation device and process for removing solid particles in catalytic cracking slurry oil and slurry oil purification device
  • Electrostatic separation device and process for removing solid particles in catalytic cracking slurry oil and slurry oil purification device

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Experimental program
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Effect test

Embodiment 1

[0061] refer to figure 1 and figure 2 As shown, the present embodiment provides a catalytic cracking oil slurry electrostatic separation device, which includes an electrostatic separator 3, the electrostatic separator 3 is composed of a casing 13, a high voltage power supply 4, a raw material distributor 2, an electrostatic field area, and a left head 16 And right head 17 forms. The heated catalytic cracking oil slurry is evenly distributed in the electrostatic field area through the raw material distributor 2 to polarize the oil slurry, so that the solid particles gather and grow on the electrode plate, and are adsorbed on the electrode surface, and gravity sedimentation occurs, and then from the catalytic cracking Separation and removal from cracked oil slurry.

[0062] Specifically, refer to figure 1 and figure 2 As shown, the raw material enters the raw material distributor 2 through the raw material inlet 1 provided at the bottom of the shell 13, and the raw materia...

Embodiment 2

[0079] This embodiment provides an example of purifying heavy oil catalytic cracking oil slurry using the purification device shown in Embodiment 1.

[0080] The density of heavy oil catalytic cracking oil slurry in Refinery 1# is 1.0256g / cm 3 , the solid particle content is 2550μg / g, the oil slurry is heated to 160°C, and then enters the electrostatic separator for purification treatment. The electrostatic separation time is 60min, and the voltage is AC DC12000V. Sampling and analysis are carried out every 60min. The test results are shown in the table 1.

[0081] From the test results, after the catalytic oil slurry is purified, micron and submicron particles are removed, the solid particle removal rate exceeds 98%, and the solid particle content is ≤50μg / g, which meets the requirements of deep purification, and the oil The pulp recovery rate can reach 95%. In addition, the device can realize continuous and stable operation.

[0082] Table 1 The effect of electrostatic sep...

Embodiment 3

[0085] This embodiment provides an example of purifying heavy oil catalytic cracking oil slurry using the purification device shown in Embodiment 1.

[0086] The density of heavy oil catalytic cracking slurry in refinery 2# is 1.1359g / cm 3 , the solid particle content is 4230μg / g, the oil slurry is heated to 170°C, and then enters the electrostatic separator for purification treatment. The electrostatic separation time is 90min, and the voltage is DC13000V. Sampling and analysis are carried out every 90min. The test results are shown in Table 2 .

[0087] According to the test results, after the catalytic oil slurry is purified, the solid particle removal rate exceeds 99%, and the solid particle content is ≤20μg / g, which meets the requirements of deep purification, and the recovery rate of the oil slurry can reach 95%. In addition, the The device can realize continuous and stable operation.

[0088] Table 2 The effect of electrostatic separation and purification of 2# oil sl...

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Abstract

The invention provides an electrostatic separation device and process for removing solid particles in catalytic cracking slurry oil and a slurry oil purification device, and relates to the technical field of slurry oil purification. The method comprises the following steps: uniformly distributing catalytic cracking slurry oil in a plurality of electrostatic fields through a raw material distributor for a purification treatment so as to remove solid particles in the catalytic cracking slurry oil. Electrostatic field polarization, coalescence, adsorption, sedimentation, feeding distribution, andelectrode plate combined application technologies are adopted, the catalyst solid ultrafine particles are deeply removed, the problem that solid ultrafine particles are difficult to remove through aconventional separation method is solved, and the solid particle removal efficiency is remarkably improved. The provided electrostatic separation device is simple in structure, convenient to operate and suitable for long-period operation.

Description

technical field [0001] The invention relates to the technical field of purification treatment of oil slurry, in particular to an electrostatic separation device for removing solid particles in catalytic cracking oil slurry, a process and an oil slurry purification device. Background technique [0002] Catalytic cracking oil slurry is a by-product produced by the catalytic cracking process. Because the catalytic cracking oil slurry contains a large number of solid catalyst particles, its utilization is greatly limited. For catalytic cracking oil slurry, refineries generally take countermeasures to reduce the oil slurry re-refining ratio and increase output of part of the oil slurry. For oil slurry dumping, many domestic refineries currently use it as a blending component of fuel oil. Although it effectively solves the problem of the actual outlet of oil slurry, the utilization rate of oil slurry is still relatively low. In addition, the solid particles in the catalytic crack...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G32/02
CPCC10G32/02C10G2300/4006
Inventor 唐应彪崔新安李春贤施振东李朝法申明周蒋兴家
Owner CHINA PETROLEUM & CHEM CORP
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