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Demulsifier rich in various functional groups, and preparation method thereof

A technology of functional group and demulsifier, applied in the field of demulsifier rich in various functional groups and its preparation, can solve problems such as difficulty, reduced dehydration effect, increased dehydration cost, etc. Removal of water-colored clear effect

Active Publication Date: 2018-01-23
JURONG NINGWU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the water content in the crude oil produced in many oilfields increases year by year, and various residual chemical agents in the crude oil after sewage reinjection make the demulsification and dehydration of emulsified crude oil more complicated and difficult. The dehydration effect of ordinary polyether demulsifiers is not ideal. Increasing the dosage is still difficult to solve the problem, which leads to the increase of the dehydration cost of the crude oil emulsion and the reduction of the dehydration effect, and also has many adverse effects on the crude oil transportation process and the oil refining in the refinery

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Add 15 parts of 202 high hydrogen-containing silicone oil, 10 parts of allyl polyether and 0.5 parts of chloroplatinic acid into a reactor equipped with a stirring and dropping device, and react under stirring conditions at 40°C for 4 hours to obtain the initial product A .

[0022] 2) Add 10 parts of deionized water, 0.5 parts of potassium persulfate and 3 parts of sodium lauryl sulfate into a reactor equipped with a stirring, dropping device and condenser, and add 10 parts of acrylic acid and acrylic acid through a constant pressure funnel dropwise. 15 parts of esters were reacted at 40°C for 2.5 hours under stirring conditions, 1 part of dodecyl mercaptan and 1 part of hydroquinone were added, and reacted for 2 hours under the same conditions to obtain the initial product B.

[0023] 3) Add the initial product A, the initial product B and 1 part of p-toluenesulfonic acid into a reactor equipped with a stirring and water separation and reflux device, and react unde...

Embodiment 2

[0025] 1) Add 25 parts of 202 high hydrogen-containing silicone oil, 20 parts of allyl polyether and 2 parts of chloroplatinic acid into a reactor equipped with a stirring and dropping device, and react at 75°C for 3 hours to obtain the initial product A .

[0026] 2) Add 15 parts of deionized water, 1 part of potassium persulfate and 4 parts of sodium lauryl sulfate into the reactor with stirring, dropping device and condenser tube, and add 25 parts of acrylic acid and acrylic acid 20 parts of esters were reacted at 60°C for 2 hours under stirring conditions, 1 part of dodecyl mercaptan and 1 part of hydroquinone were added, and reacted for 1 hour under the same conditions to obtain the initial product B.

[0027] 3) Add 2 parts of initial product A, initial product B and p-toluenesulfonic acid into a reactor equipped with a stirring and water separation and reflux device, and react under stirring conditions at 130°C for 4 hours to obtain the target product.

Embodiment 3

[0029] 1) Add 40 parts of 202 high hydrogen-containing silicone oil, 40 parts of allyl polyether and 4 parts of chloroplatinic acid into a reactor equipped with a stirring and dropping device, and react at 85°C for 1 hour to obtain the initial product A .

[0030] 2) Add 25 parts of deionized water, 6 parts of potassium persulfate and 5 parts of sodium lauryl sulfate into the reactor with stirring, dropping device and condenser tube, and add 35 parts of acrylic acid and acrylic acid through a constant pressure funnel dropwise 30 parts of esters were reacted at 95°C for 1 hour under stirring conditions, 2 parts of dodecyl mercaptan and 2 parts of hydroquinone were added, and reacted for 0.5 hours under the same conditions to obtain the initial product B.

[0031] 3) Add the initial product A, the initial product B and 1 part of p-toluenesulfonic acid into a reactor equipped with a stirring and water separation and reflux device, and react under stirring conditions at 145°C for ...

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PUM

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Abstract

The invention discloses a demulsifier rich in various functional groups, and a preparation method thereof. The demulsifier comprises the following components in parts by weight: 15 to 40 parts of hydrogen-containing silicon oil, 10 to 40 parts of allyl polyether, 10 to 35 parts of acrylic acid, 15 to 30 parts of acrylic ester, 0.5 to 4 parts of a catalyst, 0.5 to 6 parts of an initiator, 1 to 2 parts of a chain transfer agent, 1 to 2 parts of a chain terminating agent, 3 to 5 parts of a surfactant, 1 to 2 parts of an accelerant and 10 to 25 parts of deionized water. The demulsifier is single component, HLB can be adjusted by the synthetic raw materials, high amphipathy is achieved, ether bond, ester bond and carboxylate radical exist in the molecular structure of the prepared demulsifier at the same time, silicon various functional groups are introduced, and the demulsifier can act on crude oil emulsion well. The obtained demulsifier has the characteristics of small use amount, good dehydration effect, low demulsification temperature, clean dehydrated water quality, wide use range and the like.

Description

technical field [0001] The invention relates to a demulsifier, in particular to a demulsifier rich in various functional groups and a preparation method thereof. Background technique [0002] Demulsifiers are indispensable chemical additives for all oil fields. At present, polyether demulsifiers are mainly used in China. Most of these demulsifiers use active hydrogen-containing compounds as initiators. Carry out anionic ring-opening polymerization reaction to prepare polyoxyethylene polyoxypropylene ether demulsifier. However, the water content in the crude oil produced in many oilfields increases year by year, and various residual chemical agents in the crude oil after sewage reinjection make the demulsification and dehydration of emulsified crude oil more complicated and difficult. The dehydration effect of ordinary polyether demulsifiers is not ideal. Increasing the dosage is still difficult to solve the problem, which leads to the increase of the dehydration cost of the...

Claims

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Application Information

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IPC IPC(8): C10G33/04
Inventor 翟洪金应军李怀阁陈杰倪小明
Owner JURONG NINGWU CHEM
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