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High-pour-point crude oil demulsifier

A technology of crude oil demulsifier and high-condensation oil, which is applied in the direction of dehydration/demulsification by chemical methods, and can solve problems such as low demulsification efficiency, poor adaptability of crude oil, corrosion, etc.

Inactive Publication Date: 2014-08-13
盘锦富隆化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The existing demulsifiers on the market have problems such as poor adaptability to crude oil, low demulsification efficiency, and easy corrosion

Method used

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Examples

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Embodiment Construction

[0007] The present invention is described further below, and the preferred embodiment of the present invention is: high pouring oil crude oil demulsifier, is formulated as: 20 parts of propylene oxide, 30 parts of ethylene oxide, polyethylene polyamine or alkylphenol aldehyde in parts by weight Resin 10, 2.5 parts of toluene diisocyanate, 25 parts of solvent, 10 parts of potassium hydroxide; Add ethylene oxide and propylene oxide under the action of potassium oxide catalyst, carry out block copolymerization under pressure, then cross-link with toluene diisocyanate, and then compound with 36% methanol solvent. The demulsifier prepared according to this scheme is a brownish-yellow transparent liquid at normal temperature, insoluble in water, soluble in organic solvents such as ethanol, benzene and toluene, and the finished product uses toluene or xylene as a solvent. The product is packed in iron drums and stored in a cool, ventilated and dry place. The demulsifier produced by ...

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PUM

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Abstract

The invention provides a high-pour-point crude oil demulsifier. The high-pour-point crude oil demulsifier is prepared from the following components by weight: 20 to 50 parts of epoxypropane, 30 to 60 parts of oxirane, 10 to 15 parts of polyethylene polyamine or alkyl phenolic resin, 2.5 to 5 parts of toluene diisocyanate, 20 to 25 parts of a solvent and 1 to 15 parts of potassium hydroxide. The demulsifier provided by the invention is applicable to demulsification and dehydration of oil field crude oil and dehydration of oil refinery or other oil-water emulsions and has the characteristics of a fast demulsification speed, high dehydration efficiency and the like on asphalt-based crude oil with high viscosity, high gravity and high water content. In use, the demulsifier is injected into end points of a main oil transportation pipeline or into the dehydration pipeline of a combination station.

Description

technical field [0001] The invention relates to the field of petrochemical industry, in particular to a crude oil demulsifier capable of demulsifying and dehydrating crude oil. Background technique [0002] Oil and gas pipeline gathering and transportation is an important link in the development process of oil and gas fields in the oil and gas industry. In order to solve the problems in the process of oil and gas gathering and transportation, a large amount of chemical agents must be used. The chemicals used in the process of oil and gas gathering and transportation are called oil and gas gathering and transportation Chemicals, which are one of the important oilfield chemicals, mainly include demulsifiers, corrosion inhibitors, drag reducers, emulsifiers and so on. The chemical agent that can demulsify and dehydrate emulsified crude oil is called crude oil demulsifier. Since emulsified crude oil has two types: water-in-oil emulsified crude oil and oil-in-water emulsified cru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04C08G18/48C08G65/26
Inventor 胡新生胡毓桓申安锋
Owner 盘锦富隆化工有限公司
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