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Method for treating difficult-to-treat oil sludge of electric desalting tank of petrochemical enterprise

An electric desalination and oil sludge technology, which is applied in the petroleum industry and the preparation of liquid hydrocarbon mixtures, etc., can solve the problems of poor removal of oil sludge, expensive hazardous waste treatment, difficult to handle thick oil sludge, etc., and achieve the effect of promoting demulsification , lower viscosity, good electrical conductivity

Pending Publication Date: 2022-07-05
江苏天鹏龙辉环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mainly in recent years, with the deteriorating nature of crude oil and the increase of crude oil types, the salt content, density, and viscosity of crude oil have continued to increase, which has brought a huge impact and test to the electric desalting operation. Electric desalination backwashing systems do not remove sludge well, resulting in large amounts of this difficult-to-handle thick sludge
At present, all enterprises of this kind of oil sludge mainly outsource hazardous waste treatment, which cannot recycle oil and the cost of hazardous waste treatment is expensive.

Method used

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  • Method for treating difficult-to-treat oil sludge of electric desalting tank of petrochemical enterprise
  • Method for treating difficult-to-treat oil sludge of electric desalting tank of petrochemical enterprise
  • Method for treating difficult-to-treat oil sludge of electric desalting tank of petrochemical enterprise

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Experimental program
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Effect test

specific Embodiment 1

[0025] The invention discloses a method for treating refractory sludge in an electric desalination tank of a petrochemical enterprise, comprising the following steps:

[0026] In step 1, the sludge, demulsifier and water are mixed and stirred, and heated to a certain temperature. By volume ratio, sludge: demulsifier: water = 125:1:300, and the heating temperature is 70°C. The demulsifier model is SP169.

[0027] In step 2, compound detergent is added to the above solution, and the compound detergent is composed of lauryl phosphate and isopropanol amide, and stirring is continued for a period of time. The volume ratio of compound detergent and sludge is 50:1. The volume ratio of lauryl phosphate to isopropanolamide is: lauryl phosphate: isopropanolamide: water=1:1:8. Continue stirring for 20 minutes.

[0028] In step 3, polyaluminum chloride is added to the above solution, and after normal stirring for a period of time, the solution is separated by a centrifuge. The mass r...

specific Embodiment 2

[0030] The invention discloses a method for treating refractory sludge in an electric desalination tank of a petrochemical enterprise, comprising the following steps:

[0031] In step 1, the sludge, demulsifier and water are mixed and stirred, and heated to a certain temperature. By volume ratio, sludge: demulsifier: water = 125:2:300, and the heating temperature is 50°C. The demulsifier model is SP169.

[0032] In step 2, compound detergent is added to the above solution, and the compound detergent is composed of lauryl phosphate and isopropanol amide, and stirring is continued for a period of time. The volume ratio of compound detergent and sludge is 70:1. The volume ratio of lauryl phosphate to isopropanolamide is: lauryl phosphate: isopropanolamide: water=1:1:8. Continue stirring for 10 minutes.

[0033] In step 3, polyaluminum chloride is added to the above solution, and after normal stirring for a period of time, the solution is separated by a centrifuge. The mass r...

specific Embodiment 3

[0035] The invention discloses a method for treating refractory sludge in an electric desalination tank of a petrochemical enterprise, comprising the following steps:

[0036] In step 1, the sludge, demulsifier and water are mixed and stirred, and heated to a certain temperature. By volume ratio, sludge: demulsifier: water = 125:1.5:300, and the heating temperature is 60°C. The demulsifier model is SP169.

[0037] In step 2, compound detergent is added to the above solution, and the compound detergent is composed of lauryl phosphate and isopropanol amide, and stirring is continued for a period of time. The volume ratio of compound detergent and sludge is 60:1. The volume ratio of lauryl phosphate to isopropanolamide is: lauryl phosphate: isopropanolamide: water=1:1:8. Continue stirring for 15 minutes.

[0038] In step 3, polyaluminum chloride is added to the above solution, and after normal stirring for a period of time, the solution is separated by a centrifuge. The mass...

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Abstract

The invention discloses a method for treating difficult-to-treat oil sludge of an electric desalting tank of a petrochemical enterprise, which comprises the following steps: S01, mixing and stirring the oil sludge, a demulsifier and water, and heating to a certain temperature; s02, a compound detergent is added into the solution, the compound detergent is composed of lauryl alcohol phosphate and isopropanolamide, and stirring continues for a period of time; s03, adding polyaluminum chloride into the solution, normally stirring for a period of time, and separating by a centrifugal machine; and S04, stopping centrifuging, standing and settling. The method for treating the difficult-to-treat oil sludge in the electric desalting tank of the petrochemical enterprise can effectively promote the separation of water combined with the oil sludge, and realizes the separation of oil, water and sludge.

Description

technical field [0001] The invention relates to a method for treating difficult-to-treat oil sludge in an electric desalination tank of a petrochemical enterprise, and belongs to the technical field of oil sludge treatment. Background technique [0002] Oil sludge is a brown, viscous, milky liquid with a certain odor. It is generally composed of oil-in-water, water-in-oil, suspended solid impurities and petrochemical residual chemicals. It is an extremely stable suspending emulsion liquid. At present, the main methods of sludge treatment include: pyrolysis / thermal desorption method, incineration method, biological treatment method, solvent extraction method, water-phase conditioning-ultrasonic cavitation-centrifugation method, etc. However, the cost of pyrolysis / thermal desorption method and solvent extraction method is too high, the biological treatment method has a long treatment period and incomplete treatment, the incineration method cannot recover oil, and the three-ph...

Claims

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Application Information

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IPC IPC(8): C10G1/00
CPCC10G1/00
Inventor 郭伟李春阳陈琦胡松
Owner 江苏天鹏龙辉环境科技有限公司