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Modified multi-block allyl amine demulsifier and preparation method thereof

An allyl amine demulsifier and multi-block technology, which is applied in the field of modified multi-block allyl amine demulsifier and its preparation, can solve the problem of unsatisfactory demulsification effect and poor wide-spectrum adaptability of different crude oil products, etc. problem, to achieve good universality and good effect

Inactive Publication Date: 2019-04-05
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 and polyoxypropylene demulsifiers, but these demulsifiers have unsatisfactory demulsification effects when used alone, and poor broad-spectrum adaptability to different crude oil products

Method used

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  • Modified multi-block allyl amine demulsifier and preparation method thereof
  • Modified multi-block allyl amine demulsifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1) 40 grams of starter allylamine and 4 grams of AlCl 3 Put it into a reactor equipped with a stirring and condensing device, heat up to 115-145°C, control the pressure in the reaction vessel below 0.4MPa, feed 600 grams of ethylene oxide to fully react, and then vacuumize to remove unreacted epoxy Ethane and small molecule by-product; Pass into 600 gram propylene oxide and 400 gram butylene oxide then under the same condition, after fully reacting, vacuumize and remove unreacted propylene oxide and butylene oxide, obtain initial product;

[0027] 2) Dissolve 400 grams of the initial product obtained in step 1) in 350 grams of ethanol, and then add 6 grams of azobisisobutyronitrile and 2 grams of OP-10 into a reactor with stirring, condensation, and dropping devices , start the stirrer, heat up to 65°C, slowly add 200 g of α-methyltriethoxysilane dropwise under stirring, control the dropwise addition for 1.5 hours, continue the reaction for 2 hours, and distill off the ...

Embodiment 2

[0029] 1) 16 grams of starter allylamine and 10 grams of AlCl 3 Put it into a reactor with a stirring and condensing device, heat up to 115-145°C, control the pressure in the reaction vessel below 0.4MPa, feed 320 grams of ethylene oxide to fully react, and then vacuumize to remove unreacted epoxy Ethane; Then pass into 660 gram propylene oxide and 320 gram butylene oxide under the same condition, after fully reacting, vacuumize and remove unreacted propylene oxide and butylene oxide, obtain initial product;

[0030] 2) Dissolve 600 grams of the initial product obtained in step 1) in 300 grams of ethanol, and then add 10 grams of azobisisobutyronitrile and 6 grams of OP-10 into a reactor with a stirring, condensation, and dropping device , start the agitator, heat up to 50°C, slowly add 160 g of α-methyltriethoxysilane dropwise under stirring, control the dropwise addition for 0.5 hours, continue the reaction for 0.5 hours, and distill off the solvent under reduced pressure to...

Embodiment 3

[0032] 1) 160 grams of starter allylamine and 20 grams of AlCl 3 Put it into a reactor equipped with a stirring and condensing device, heat up to 115-145°C, control the pressure in the reaction vessel below 0.4MPa, feed 660 grams of ethylene oxide to fully react, and then vacuumize to remove unreacted ethylene oxide Alkane; Pass into 520 gram propylene oxide and 350 gram butylene oxides under the same condition then, vacuumize after fully reacting and remove unreacted propylene oxide and butylene oxide, obtain initial product;

[0033] 2) Dissolve 100 grams of the initial product obtained in step 1) in 450 grams of ethanol, and then add 1.5 grams of azobisisobutyronitrile and 3 grams of OP-10 into a reactor with a stirring, condensation, and dropping device , start the agitator, heat up to 80°C, slowly add 450 g of α-methyltriethoxysilane dropwise under stirring, control the dropwise addition for 1.5 hours, continue the reaction for 2 hours, and distill off the solvent under r...

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Abstract

The invention discloses a modified multi-block allyl amine demulsifier and a preparation method thereof. The preparation method comprises the following steps: adding allyl amine as a starting agent and a catalyst in a reaction container, heating to the temperature of 115-145 DEG C, controlling the pressure in the reaction container to be 0.4 MPa or below, feeding ethylene oxide, fully reacting andthen vacuumizing; then feeding propylene epoxide and epoxybutane under the same conditions, fully reacting and then vacuumizing to obtain a primary product; and dissolving the primary product in an organic solvent, then adding the primary product, an initiator and a surfactant in a reactor together, heating to the temperature of 50-80 DEG C, dropwise adding alpha-methyl trimethoxysilane while stirring, controlling the dropwise adding of the alpha-methyl trimethoxysilane to be completed within 0.5-1.5 hours, keeping reacting for 0.5-2 hours, distilling under reduced pressure and removing the solvent to obtain the final product.

Description

technical field [0001] The invention relates to a modified multi-block allyl amine demulsifier 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 recovery. 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 oil fields are mainly polyoxyethylene and polyoxypropylene demulsifier...

Claims

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Application Information

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IPC IPC(8): C08G65/26C08G65/336C10G33/04
CPCC08G65/2624C08G65/336C08G2650/04C08G2650/58C10G33/04
Inventor 应军王赟倪良李怀阁翟洪金倪小明徐东海孙延兰季霞
Owner JURONG NINGWU CHEM
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