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Compound polyether demulsifier and preparation method thereof

A technology of demulsifier and polyether, which is applied in the field of high-efficiency and environmentally friendly compound polyether demulsifier and its preparation, can solve the problems of large amount of demulsifier and environmental pollution, so as to improve the demulsification effect and reduce environmental pollution Small, aroma-increasing effect

Active Publication Date: 2020-08-28
JINHU JINLING NEW MATERIAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The demulsification effect of the above two compound demulsifiers is good, but at the same time there is a large amount of demulsifier used in the process of use, which has the disadvantage of polluting the environment

Method used

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  • Compound polyether demulsifier and preparation method thereof
  • Compound polyether demulsifier and preparation method thereof
  • Compound polyether demulsifier and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0030] The invention discloses a composite polyether demulsifier, which is composed of the following mass fractions: 40% of multi-branched cationic polyether reverse phase demulsifier, 10% of PRJ-1 demulsifier, polyaluminum chloride ( PAC) and FeCl 3 ·6H 2 O mixture 15%, toluene diisocyanate 15%.

[0031] The present invention also discloses a method for the above compound polyether demulsifier, comprising the following steps:

[0032] (1) Bisphenol A and double metal cyanide are placed in the reactor for reflux reaction to obtain a mixed solution of branched polyamine compound and double metal cyanide; the molar ratio of bisphenol A to double metal cyanide is 31:2 ;

[0033] (2) Transfer the mixed solution obtained in step (1) to the high-pressure lid, heat up to 120° C. and vacuumize after sealing;

[0034] (3) Slowly and continuously add ethylene oxide and propylene oxide to the high-pressure cover, and continue to react after the feeding ends to obtain a hyperbranched ...

Embodiment 2

[0038] The invention discloses a composite polyether demulsifier, which is composed of the following mass fractions: 35% of multi-branched cationic polyether reverse phase demulsifier, 25% of PRJ-1 demulsifier, polyaluminum chloride ( PAC) 20%, diisocyanate 15%.

[0039] The present invention also discloses a method for the above compound polyether demulsifier, comprising the following steps:

[0040] (1) Diethylenetriamine and double metal cyanide are placed in the reactor for reflux reaction to obtain a mixed solution of branched polyamine compound and double metal cyanide; the mol ratio of diethylenetriamine and double metal cyanide is 31 :2;

[0041] (2) Transfer the mixed solution obtained in step (1) to the high-pressure lid, heat up to 100° C. and vacuumize after sealing;

[0042] (3) Slowly and continuously add ethylene oxide and propylene oxide to the high-pressure cover, continue to react after the addition, and obtain a hyperbranched polyether compound. The pressu...

Embodiment 3

[0046] The invention discloses a compound polyether demulsifier, which is composed of the following substances in mass fraction: 45% of multi-branched cationic polyether reverse phase demulsifier, 30% of PRJ-1 demulsifier, FeCl 3 ·6H 2 O 15%, diisocyanate 10%.

[0047] The present invention also discloses a method for the above compound polyether demulsifier, comprising the following steps:

[0048] (1) Formaldehyde and double metal cyanide are placed in the reactor for reflux reaction to obtain a mixed solution of branched polyamine compound and double metal cyanide; the mol ratio of formaldehyde and double metal cyanide is 31:2;

[0049] (2) Transfer the mixed solution obtained in step (1) to the high-pressure lid, heat up to 150° C. and vacuumize after sealing;

[0050] (3) Slowly and continuously add ethylene oxide and propylene oxide to the high-pressure cover, and continue to react after the feeding ends to obtain a hyperbranched polyether compound. The reaction cover ...

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Abstract

The invention discloses an efficient and environment-friendly compound polyether demulsifier and a preparation method thereof. The preparation method comprises the following steps: firstly, reacting bisphenol A with diethylenetriamine and formaldehyde to prepare a polyamine compound; polymerizing the branched cationic polyether with ethylene oxide and propylene oxide, and carrying out cationic modification to obtain a branched cationic polyether reverse demulsifier; and finally, compounding the prepared multi-branched cationic polyether reverse demulsifier with a biological demulsifier, a flocculating agent and a cross-linking agent according to a certain ratio, dissolving with a solvent, and uniformly mixing the components to obtain the compound polyether demulsifier. The efficient and environment-friendly compound polyether demulsifier prepared by the invention is high in demulsifying speed and good in demulsifying effect, the dosage of the demulsifier can be reduced, the damage to the environment is reduced, and the effects of environmental protection and energy conservation are achieved.

Description

technical field [0001] The invention belongs to the technical field of petroleum exploitation, and in particular relates to a high-efficiency and environment-friendly compound polyether demulsifier and a preparation method thereof. Background technique [0002] Crude oil demulsification refers to the use of the chemical action of demulsifiers to separate the oil and water in the emulsified oil-water mixture to achieve dehydration of crude oil to meet the water content standard for crude oil export. The composition of crude oil is complex, not only containing hydrocarbons with different molecular weights and structures, but also non-hydrocarbon impurities such as clay, sand particles, free hydrogen sulfide, and inorganic salts dissolved in water. These substances exist in different forms in in crude oil. In particular, the ratio of hydrogen to carbon atoms in my country's crude oil is relatively low, with less light fractions and more heavy fractions. The heavy oil fraction...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/04
CPCC10G33/04C10G2300/201C10G2300/1033
Inventor 张进凌坤华范阳海凌功明
Owner JINHU JINLING NEW MATERIAL SCI & TECH
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