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Low-temperature quick deemulsifying agent for water-containing wax-containing erude oil and its preparation method

A demulsifier and low-temperature technology, which is applied to the field of low-temperature fast demulsifier for water-containing waxy crude oil and its preparation, can solve the problems of high demulsification temperature, unsatisfactory dehydration speed, and large addition amount, so as to improve safety and be beneficial to the environment. The effect of protecting and reducing the cost of demulsification

Inactive Publication Date: 2007-05-23
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of high demulsification temperature, large dosage and unsatisfactory dehydration speed in the prior art, the present invention designs a low-temperature rapid demulsifier suitable for water-containing waxy crude oil, and provides the preparation process

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Proportionally add 40g of diethylenetriamine to a 250ml four-necked flask, heat up and stir to add 80g of bisphenol A, after mixing, slowly add 8g of formaldehyde solution to it, and then raise the temperature to 100°C for dehydration reaction for 2 hours to obtain phenamine resin. Add 10g of phenolamine resin and 1g of catalyst calcium acetate into the autoclave, slowly add 200g of propylene oxide at 140°C, control the pressure at 0.1-0.3MPa, then add 100g of ethylene oxide at 100°C, and carry out copolymerization to obtain polyether . Take 50g of polyether and add 0.05g of cross-linking agent 1,3-dichloro-2-propanol at 40°C to react for 0.5h, then add 10g of penetrant JFC and 10g of propanol, dilute with water to the required amount, and obtain Finished demulsifier.

Embodiment 2

[0037] Add 100g of triethylenetetramine to a 250ml four-neck flask, raise the temperature and stir to add 5g of bisphenol A, after mixing, slowly add 25g of formaldehyde solution to it, and then raise the temperature to 180°C for 2 hours for dehydration reaction to obtain phenolic amine resin. Add 1g of phenolamine resin and 3g of catalyst potassium hydroxide to the autoclave, add 500g of propylene oxide at 140°C, control the pressure at 0.1-0.3MPa, then slowly add 300g of ethylene oxide at 100°C, and block polymerization to obtain Polyether. Take 50g of polyether and add 5g of cross-linking agent 1,3-dichloro-2-propanol at 80°C to react for 2 hours, then add 10g of propanol and dilute with water to obtain the finished demulsifier.

Embodiment 3

[0039] Add 75g of tetraethylenepentamine to a 250ml four-neck flask, raise the temperature and stir to add 20g of bisphenol A, after mixing, slowly add 30g of formaldehyde solution to it, then raise the temperature to 120°C for 2 hours to prepare phenolic amine resin. Add 5g of phenolamine resin and 1g of potassium hydroxide to the autoclave, add 400g of propylene oxide at 140°C, control the pressure at 0.1-0.3MPa, then slowly add 100g of ethylene oxide at 110°C, and obtain poly ether. Take 50g of polyether and add 4g of cross-linking agent 1,3-dichloro-2-propanol at 50°C to react for 1 hour, then add 10g of propanol and dilute with water to obtain the finished demulsifier.

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Abstract

A low-temp high-speed demulsifier for the water and wax contained crude oil is prepared through the block copolymerization between phenolamine resin, epoxy propane and epoxy ethane to obtain star branched polyether, reacting on water-soluble cross-linking agent, and adding additive.

Description

(1) Technical field [0001] The invention relates to a low-temperature rapid demulsifier for aqueous waxy crude oil and a preparation method thereof, belonging to petroleum processing [0002] technology field. (2) Background technology [0003] Chemical demulsification is one of the most convenient, economical and effective methods to remove water from crude oil emulsion. From 1914 Barnickel reported FeSO 4 It has been nearly 90 years since the solution demulsified the emulsified crude oil, and three generations of products have been developed successively. [0004] After the 1960s, the third generation of demulsifiers was developed, mainly high molecular weight polyether demulsifiers. Polyether demulsifiers have their unique advantages. The molecules can not only be “flat-lying” adsorbed on the droplet interface to replace the original emulsifier molecules, but also the molecules are loosely arranged, the thickness of the interface layer is not large, and the intermolecu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G33/00
Inventor 徐桂英张志庆王芳
Owner SHANDONG UNIV
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