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Heavy oil sewage demulsifier

A technology of water demulsifier and heavy oil sewage, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of poor sewage treatment effect, small flocculation group, poor demulsification ability, etc., achieve good economic benefits and shorten the process flow , good processing effect

Active Publication Date: 2009-04-01
PETROCHINA CO LTD
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  • Summary
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  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The application effects of the above-mentioned agents are not ideal, and there are shortcomings such as large dosage, poor effect of removing oil and suspended matter, small and loose flocs, poor demulsification ability, and poor sewage treatment effect, which cannot meet the actual needs of production.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Embodiment 1: to the treatment of super heavy oil sewage. Add demulsifier according to the above-mentioned dosing process, the dosage is 150mg / L, and the pH value is controlled at about 7.0. After rapid mixing, slow reaction, and precipitation treatment, the water is clear and transparent, the oil-water interface is clear, and the suspended matter content is from 6598mg / L decreased to 1.8mg / L, and the oil content dropped from 16713mg / L to 1.6mg / L;

Embodiment 2

[0011] Embodiment 2: Treatment of ordinary heavy oil sewage. The dosage of demulsifier is 75mg / L, the oil content after treatment is reduced from 8331mg / L to 0.5mg / L, the content of suspended solids is reduced from 265mg / L to 1.6mg / L, the water is clear and transparent, and the oil-water interface is clear.

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PUM

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Abstract

The invention relates to a thick-oil sewage demulsifier. The main raw materials of the thick-oil sewage demulsifier are industrial waste acid and polyaluminium chloride polyacrylamide, the weight percentage of the both is 70% and 30% respectively, industrial waste acid and polyaluminium chloride polyacrylamide are added in the thick oil sewage, and pH value is adjusted at about 7.0, after polyacrylamide is added in for rapid mixing, slow reaction and sedimentation, emulsion breaking of thick oil sewage and separation of oil and water are realized. The thick-oil sewage treatment agent provided by the invention is characterized by low cost and good treatment effect, by utilizing the thick oil sewage treatment agent, the process flow of sewage treatment can be shortened greatly, and good economic benefit can be obtained.

Description

Technical field: [0001] The invention relates to a chemical additive for heavy oil oil field sewage treatment, which belongs to the technical category of oil field chemical sewage treatment. Background technique: [0002] Heavy oil sewage treatment is an important link in the surface production gathering and transportation system of heavy oil oil fields. Due to the characteristics of small oil-water density difference, serious emulsification, high viscosity, and complex composition of heavy oil sewage, the treatment process is long, the investment is large, and the operating cost is high. At present, the treatment process of heavy oil sewage at home and abroad is relatively long, and the treatment effect is not ideal. The main reason is that the post-stage filtration system is overemphasized and the front-stage degreasing system is ignored. The degreasing system is the basis and key of the entire heavy oil sewage treatment process, and the degreasing effect depends on the h...

Claims

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Application Information

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IPC IPC(8): C02F1/52
Inventor 谢加才刘喜林赵政超张春山
Owner PETROCHINA CO LTD
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