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A kind of demulsifier for treating aging oil and its application

A demulsifier and aging oil technology, which is applied in the treatment of hydrocarbon oil, dehydration/demulsification by chemical methods, and only multi-stage serial refining process treatment, etc. It can solve the complex composition of aging oil, no chemical composition, and difficult treatment, etc. problem, to achieve good demulsification effect

Active Publication Date: 2018-03-09
BEIJING UNIV OF CHEM TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aged oil has complex components and is difficult to deal with. The key to affecting the treatment effect is the choice of demulsifier. From the published data, most of them are model numbers or code names, without specific chemical components.

Method used

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  • A kind of demulsifier for treating aging oil and its application
  • A kind of demulsifier for treating aging oil and its application
  • A kind of demulsifier for treating aging oil and its application

Examples

Experimental program
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Embodiment Construction

[0012] Synthesis of demulsifiers

[0013] Put a certain amount of dodecylamine or octadecylamine and catalyst (KOH or NaOH) into the reaction kettle, the amount of catalyst added is 0.1%-0.3% of the amine, replace the air in the kettle with nitrogen, at 105-110°C, Dehydrate for about 30 minutes. Continue to raise the temperature, and feed a metered amount of propylene oxide at 135-145°C and a pressure of 0.1-0.3 MPa to make the amine react with propylene oxide first. Pass through propylene oxide, and when the pressure drops to about 0MPa, then add catalyst (KOH or NaOH), the amount of catalyst added is 0.1%-0.3% relative to the mass of amine, and then pass through ethylene oxide to continue Reaction, reaction temperature l20-135 ℃, pressure 0.05-0.2MPa. When the metered ethylene oxide is passed through and the pressure drops to about 0MPa, keep it warm for 30 minutes and neutralize it with acid, then the demulsifier is finished.

[0014] The ring-opening reaction of propyle...

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Abstract

The invention relates to an emulsion breaker for treating ageing oil and application thereof. The emulsion breaker is an addition product of ethylene oxide and propylene oxide of fatty amine, wherein the mole number of the ethylene oxide is 5-20, and the mole number of the propylene oxide is 5-20. Firstly, hydrochloric acid is added into the ageing oil to adjust the pH value to 2-3, and sulfide therein is dissolved. Then, the emulsion breaker is added, the volume ratio of the addition of the emulsion breaker to the addition of the ageing oil is 150-300mg / L, the emulsion breaker is uniformly stirred when being injected to make the emulsion breaker fully fused, and the addition concentration of SP169 is 100mg / L of crude oil, and treatment time is 48-72h. The invention relates to the ethylene oxide / propylene oxide addition product of the fatty amine, capable of achieving a better emulsion breaking effect on the ageing oil containing ferrous sulfide.

Description

technical field [0001] The invention belongs to the field of aging oil treatment. Background technique [0002] Aged oil refers to the crude oil produced and processed under the action of agents, mechanical impurities, colloidal asphaltenes, bacteria, air, cyclic shear and other factors, and its emulsified state is becoming more and more stable. Crude oil emulsion that cannot be handled and has a great impact on the crude oil dehydration system. [0003] The main causes of aging oil are: 1) Bacteria. In oil field production, if no sterilization or improper sterilization measures, bacteria (mainly sulfate reducing bacteria SRB) will breed in the production system. The FeS particles produced by SRB are fine and adsorbed on the surface of crude oil, making it difficult for the crude oil to demulsify; Viscosity reducers, polymers, alkalis, surfactants and other oil displacement agents added during tertiary recovery are also seriously affected. In polymer flooding production f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/04C10G53/02
CPCC10G33/04C10G53/02C10G2300/1003C10G2300/1007C10G2300/202
Inventor 赵景茂靳广强井海涛于东
Owner BEIJING UNIV OF CHEM TECH
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