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High-efficiency compound demulsifier for heavy and poor crude oil

A technology of inferior crude oil and demulsifier, which is applied in the direction of dehydration/demulsification by electric/magnetic method, dehydration/demulsification by chemical method, etc., which can solve the problems of large amount of use, long dehydration time, and insignificant effect of demulsification and dehydration.

Inactive Publication Date: 2011-06-01
江苏三星化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention is to develop a high-efficiency composite demulsifier for heavy and low-quality crude oil to solve the problems that existing demulsifiers for heavy and low-quality crude oil have no obvious demulsification and dehydration effect, long dehydration time and large usage

Method used

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  • High-efficiency compound demulsifier for heavy and poor crude oil
  • High-efficiency compound demulsifier for heavy and poor crude oil
  • High-efficiency compound demulsifier for heavy and poor crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment A

[0017] Demulsifier thermochemical sedimentation evaluation test:

[0018] Test procedure: 90g of Liaohe heavy oil + 10g of distilled water, preheated in a constant temperature water bath at 80°C for 5 minutes, mixed manually 60 times, and settled in a constant temperature water bath for comparison. The data of sedimentation demulsification and dehydration efficiency are as follows:

[0019]

[0020] Embodiment A composite demulsifier composition:

[0021] Demulsifier AP221, 15% Demulsifier AR36, 25%

[0022] New silicone polymer demulsifier (grade: 1636), 5%

[0023] Dodecylbenzenesulfonic acid, 0.5%

[0024] Mixed xylene solvent, 30% hydrocarbon solvent oil 200#, 24.5%

Embodiment B

[0026] Demulsifier thermochemical sedimentation evaluation test:

[0027] Test procedure: Mix heavy oil (sand weight: Iraqi weight = 1:9) 80 + distilled water 20g, preheat in a constant temperature water bath at 85°C for 5 minutes, mix manually 60 times, and stand still in a constant temperature water bath for sedimentation comparison. The data of sedimentation demulsification and dehydration efficiency are as follows:

[0028]

[0029]

[0030] Embodiment B demulsifier composition:

[0031] Demulsifier BP2070, 10% Demulsifier AR46, 35%

[0032] New silicone polymer demulsifier (grade: 606), 5%

[0033] Dodecylbenzenesulfonic acid, 0.5% Isopropanol, 4.5%

[0034] Aromatic solvent, 45%

Embodiment C

[0036] Test procedure: Sudan crude oil (higher acid value) 80g + distilled water 20g, preheat in a constant temperature water bath at 60°C for 5 minutes, mix manually 60 times, and stand still in a constant temperature water bath for sedimentation comparison. The data of sedimentation demulsification and dehydration efficiency are as follows:

[0037]

[0038] Embodiment C demulsifier composition

[0039] New silicone polymer demulsifier (brand: 1636), 5%;

[0040] Demulsifier AP221, 10% Demulsifier BP2070, 10% Demulsifier AR2, 25%;

[0041] Dodecylbenzenesulfonic acid, 0.5% isopropanol, 1% n-butanol, 0.5%.

[0042] Mixed aromatic solvent, 51%.

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PUM

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Abstract

The invention discloses a high-efficiency compound demulsifier for heavy and poor crude oil. The high-efficiency compound demulsifier can improve the emulsification performance of oil-water interfaces of oil / water (O / W) heavy and poor crude oil and thickened oil, so that high dehydration effect can be achieved in a small using amount and the dehydration efficiency is greatly improved and the discharged water carries a small amount of oil. The compound demulsifier comprises the following components in percentage by mass: 30 to 50 percent of block polyether polymer demulsifier, 3 to 5 percent of novel organosilicon polymer demulsifier, 0.5 to 5 percent of demulsifier additive, and 40 to 60 percent of solvent.

Description

technical field [0001] The invention belongs to the field of petroleum processing, in particular to a high-efficiency composite demulsifier for heavy and low-quality crude oil. Background technique [0002] Petroleum, also known as crude oil, is a viscous, dark brown (sometimes greenish) liquid. It is composed of a mixture of different hydrocarbons, and its main component is alkanes. In addition, petroleum also contains elements such as sulfur, oxygen, nitrogen, phosphorus, and vanadium. The relative density of 0.9-1.0 or the API degree less than 27 is called heavy crude oil, and the range of inferior oil is wider than that of heavy oil, and those who meet the requirements of API degree less than 27 (heavy oil), sulfur content greater than 1.5%, and total acid value of crude oil Crude oil with a (TAN) greater than 1.0mgKOH / g can be called inferior crude oil. [0003] In the exploitation stage of heavy and low-quality crude oil, high-cost secondary and tertiary oil recovery...

Claims

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Application Information

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IPC IPC(8): C10G33/04C10G33/02
Inventor 刘建春韦伟
Owner 江苏三星化工有限公司
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