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Ultrahigh molecular weight multi-ring structure-enriched demulsifier and preparation method thereof

An ultra-high molecular weight, multi-ring technology, used in separation methods, chemical instruments and methods, liquid separation, etc., can solve high-colloid, asphaltene crude oil with poor adaptability, unsatisfactory demulsification effect, and broad spectrum of different crude oils. Poor adaptability and other problems, to achieve the effect of good effect and excellent effect

Active Publication Date: 2019-04-09
JURONG NINGWU CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the demulsifiers used in domestic oilfields are mainly polyoxyethylene polyoxypropylene demulsifiers, but this kind of demulsifiers have unsatisfactory demulsification effects when used alone, and poor broad-spectrum adaptability to different crude oil products. Poor adaptability of bituminous crude oil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] 1) Add 6 grams of benzoyl peroxide, 180 grams of deionized water and 2 grams of sodium lauryl sulfate into a reactor with a stirring, condensation, and dropping device, start the stirrer, heat up, and control the temperature at Slowly add 185 grams of vinylpyrrolidone and 200 grams of 4-styrene acid dropwise at 65°C, and control the addition for 1.5 hours to complete the addition, and continue the reaction for 2 hours to obtain an initiator rich in polycyclic ring structures in the molecular structure;

[0023] 2) Get 25 grams of starter and 1 gram of AlCl that step 1) makes 3 and 0.2 g B(CH 3 ) 3 Put it into the reactor with a stirring and condensing device, heat up the temperature, and feed 250 grams of ethylene oxide, control the temperature at 115-145 ° C, and the pressure at 0.4 MPa. After fully reacting, pump it into a vacuum. 225 grams of butylene oxide are vacuumized after fully reacting to remove unreacted oxirane, butylene oxide and small molecule substances...

Embodiment 2

[0025] 1) Add 0.6 gram of benzoyl peroxide, 120 gram of deionized water and 3 gram of sodium lauryl sulfate into the reactor with stirring, condensation and dropping device, start the stirrer, heat up, and control the temperature at 50°C, slowly add 140 grams of vinylpyrrolidone and 260 grams of 4-styrene acid dropwise, control the dropwise addition for 1 hour, and continue the reaction for 1 hour to obtain an initiator rich in polycyclic ring structure in the molecular structure;

[0026] 2) Get 50 grams of starter and 0.6 gram of AlCl obtained in step 1) 3 Put it into the reactor with a stirring and condensing device, heat up the temperature, and feed 350 grams of ethylene oxide, control the temperature at 115-145 ° C, and the pressure at 0.4 MPa. After fully reacting, pump it into a vacuum. 105 grams of butylene oxide are vacuumized after fully reacting to remove unreacted oxirane, butylene oxide and small molecule substances to obtain the target demulsifier.

Embodiment 3

[0028] 1) 3 grams of benzoyl peroxide, 200 grams of deionized water and 5 grams of sodium lauryl sulfate are added in the reactor with stirring, condensation and dropping device, start the stirrer, heat up, and control the temperature at At 80°C, slowly add 250 grams of vinylpyrrolidone and 100 grams of 4-styrene acid dropwise, control the dropwise addition for 0.5 hours, and continue the reaction for 0.5 hours to obtain an initiator rich in polycyclic ring structures in the molecular structure;

[0029] 2) Get 1 gram of starter and 3.5 grams of AlCl that step 1) made 3 Put it into the reactor with a stirring and condensing device, heat up the temperature, and pass 155 grams of ethylene oxide, control the temperature at 115-145 ° C, and the pressure at 0.4 MPa to make a vacuum after fully reacting. Put into 290 gram butylene oxides, evacuate after fully reacting, remove unreacted oxirane, butylene oxide and small molecule substance, obtain target demulsifier.

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Abstract

The invention discloses an ultrahigh molecular weight multi-ring structure-enriched demulsifier and a preparation method thereof. The preparation method comprises the following steps: adding an initiator, deionized water and a surfactant into a reactor, heating to 50-80 DEG C, dropwise adding vinyl pyrrolidone and 4-phenylcinnamic acid at the same time within 0.5-1.5 hours while stirring, and further reacting for 0.5-2 hours to prepare the initiator rich in multiple rings; then adding the initiator and a catalyst into a reaction container, heating to 115-145 DEG C, and introducing ethylene oxide in the reaction container under the pressure of 0.4 MPa to react fully and vacuumizing; and introducing epoxybutane to react fully under the same condition to obtain the ultrahigh molecular weightmulti-ring structure-enriched demulsifier.

Description

technical field [0001] The invention relates to an ultra-high molecular weight demulsifier rich in multiple ring structures and a preparation method thereof, which is suitable for demulsification and dehydration of oil field crude oil emulsion and belongs to the technical field of oil production. Background technique [0002] Due to the application of water flooding oil recovery technology, the water content of oilfield produced fluid is increasing continuously, and the emulsion is more stable, which aggravates the task of demulsification and dehydration of emulsified crude oil. If it is not dehydrated in time, it will cause corrosion to pumps and transportation pipelines, so it must be dehydrated before crude oil is transported. The free water in crude oil can be easily removed by natural sedimentation, while the removal of emulsified water generally requires the addition of demulsifiers. At present, the demulsifiers used in domestic oilfields are mainly polyoxyethylene po...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/26C08F212/14C08F226/10B01D17/04
CPCB01D17/048C08F212/14C08F226/10C08G65/2618
Inventor 应军李怀阁翟洪金倪小明徐东海孙延兰季霞
Owner JURONG NINGWU CHEM