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Crude de-emulsifier and its preparing process

A crude oil demulsifier and demulsifier technology, applied in the direction of hydrocarbon oil dehydration/demulsification, petroleum industry, etc., can solve the problem of neglecting new demulsifiers, and achieve good demulsification performance, large molecular weight, and the effect of promoting oil-water separation

Inactive Publication Date: 2009-04-29
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the demulsifiers developed and applied in oilfields, and the new demulsifiers researched by scientific research units are mostly based on compounding, ignoring the development of new demulsifiers with new chemical structures

Method used

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  • Crude de-emulsifier and its preparing process
  • Crude de-emulsifier and its preparing process
  • Crude de-emulsifier and its preparing process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Embodiment 1: the synthesis of demulsifier A

[0022] (1) Add 1g of 1.0 generation polyamidoamine and 1g of KOH into the autoclave;

[0023] (2) Seal the reaction kettle system, and replace the air in the autoclave, feeding kettle and feeding pipe with nitrogen.

[0024] (3) Stir and heat up, when the temperature rises to 100°C, slowly add 100g of propylene oxide, control the reaction temperature at 120-140°C, and the pressure at 0.2-0.4Mpa.

[0025] (4) After the reaction is completed, age for 1 hour and cool down to 100°C.

[0026] (5) 100g ethylene oxide is added to the feed tank, and reacted under the same conditions as (3). The reaction product is neutralized to neutral with phosphoric acid to obtain demulsifier A.

Embodiment 2

[0027] Embodiment 2: the synthesis of demulsifier B

[0028] (1) Add 1g of 2.0 generation polyamidoamine and 1g of KOH into the autoclave;

[0029] (2) Seal the reaction kettle system, and replace the air in the autoclave, feeding kettle and feeding pipe with nitrogen.

[0030] (3) Stir and heat up, when the temperature rises to 100°C, slowly add 100g of propylene oxide, control the reaction temperature at 120-140°C, and the pressure at 0.2-0.4Mpa.

[0031] (4) After the reaction is completed, age for 1 hour and cool down to 100°C.

[0032] (5) 100g ethylene oxide is added to the feed tank, and reacted under the same conditions as (3). The reaction product is neutralized to neutral with phosphoric acid to obtain demulsifier B.

Embodiment 3

[0033] Embodiment 3: the synthesis of demulsifier C

[0034] (1) Add 1g of 3.0 generation polyamidoamine and 1g of KOH into the autoclave;

[0035] (2) Seal the reaction kettle system, and replace the air in the autoclave, feeding kettle and feeding pipe with nitrogen.

[0036] (3) Stir and heat up, when the temperature rises to 100°C, slowly add 100g of propylene oxide, control the reaction temperature at 120-140°C, and the pressure at 0.2-0.4Mpa.

[0037] (4) After the reaction is completed, age for 1 hour and cool down to 100°C.

[0038] (5) 100g ethylene oxide is added to the feed tank, and reacted under the same conditions as (3). The reaction product is neutralized to neutral with phosphoric acid to obtain demulsifier C.

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Abstract

The invention discloses a de-emulsifying agent and a method for preparing the same. The de-emulsifying agent is a polyether compound prepared by alkoxylation reaction of poly (amidoamine) (PAMAM) and epoxy compounds. The invention adopts the PAMAM with a dendritic multi-branch structure as an initiator for synthesis the de-emulsifying agent. The obtained de-emulsifying agent has the characteristics of a plurality of branched and large molecular weight. The de-emulsifying agent has good interfacial activity, infiltrability, good crude oil emulsion de-emulsifying performance, and wide applications in crude oil exploration, oil refining and other fields.

Description

technical field [0001] The invention relates to a water-in-oil type crude oil demulsifier for petroleum products and a preparation method thereof. Background technique [0002] Petroleum plays an important role in the national economy and people's daily life. In the process of oil exploitation, with the wide application of new technologies such as water injection oil recovery, heavy oil thermal recovery, alkaline water flooding, surfactant oil flooding, polymer flooding, etc., and the aging of some oil wells themselves, the colloids in crude oil Through the emulsification of substances, asphalt, naphthenic acid, fatty acid and salt, crystalline paraffin and various surface-active substances introduced artificially, the crude oil produced is mostly in the state of emulsion. Almost all oil fields around the world go through a water-bearing development period, and the crude oil extracted from the ground often contains water. The water content of crude oil will increase the vi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G33/00
Inventor 檀国荣周继柱王金本樊明红徐晓慧王毅琳闫海科张健向问陶伍家忠
Owner INST OF CHEM CHINESE ACAD OF SCI
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