Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method for multi-branched highly-watery crude oil demulsifier

A crude oil demulsifier and multi-branched technology, which is applied in the direction of dehydration/demulsification by chemical methods, can solve the problems of difficult to realize large-scale industrial application, large amount of demulsifier, slow demulsification speed, etc., and achieve good demulsification ability , The cleanliness of the water phase is good, and the demulsification speed is fast

Active Publication Date: 2017-03-29
CNOOC TIANJIN CHEM RES & DESIGN INST +1
View PDF2 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although the reports on the demulsification performance of multi-branched macromolecules are gradually increasing, the relevant research is still in the initial stage. Although the obtained demulsifier product has a certain demulsification effect, there are still problems of large amount of demulsifier and slow demulsification speed. It is difficult to achieve large-scale industrial application, so it is a major trend in the field of petroleum processing to continue to develop new multi-branched demulsifier products

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] (1) Take 50g of ethylene oxide propylene oxide block polyether with a hydroxyl value of 40mgKOH / g, 5.0g of epichlorohydrin, and 3.67g of tetrabutylammonium chloride and dissolve them in 124.67g of deionized water, stir well After the reaction was completed, the solvent and unreacted epichlorohydrin were distilled off under reduced pressure, and then dissolved in methanol and filtered to remove salt and solvent to obtain 52.022 g of polyether with epoxy groups. The yield was 100%;

[0020] (2) Take 52.022g of epoxy-terminated polyether obtained above, 10.41g of sodium methoxide, and 15.61g of 2.0G polyamide-amine with ethylenediamine as the core, dissolve it in 117.06g of methanol, stir it evenly, and heat up to 55°C. Keep warm, cool down after the reaction is completed, adjust the pH to 7 with hydrochloric acid, and obtain a light yellow liquid demulsifier product A.

Embodiment 2

[0022] (1) Take 50g of ethylene oxide propylene oxide block polyether with a hydroxyl value of 50mgKOH / g, 7.5g of epichlorohydrin, and 3.83g of tetrabutylammonium chloride and dissolve them in 67.60g of deionized water, stir well Raise the temperature to 60°C and carry out the reaction. After the reaction is completed, the solvent and unreacted epichlorohydrin are distilled off under reduced pressure, and then dissolved in methanol and filtered to remove salt and solvent to obtain 52.51 g of polyether with epoxy groups. The yield is 100%;

[0023] (2) Take 52.51g of the epoxy-terminated polyether obtained above, 18.38g of sodium methoxide, and 13.13g of 2.0G polyamide-amine with ethylenediamine as the core, dissolve it in 84.02g of methanol, stir it evenly, and heat it up to 55°C. Keep warm, cool down after the reaction is completed, adjust the pH to 7 with hydrochloric acid, and obtain product B as a light yellow liquid demulsifier.

Embodiment 3

[0025] (1) Take 50g of ethylene oxide propylene oxide block polyether with a hydroxyl value of 65mgKOH / g, 10.0g of epichlorohydrin, and 4.0g of tetrabutylammonium chloride and dissolve them in 46.0g of deionized water, stir well After the reaction was completed, the solvent and unreacted epichlorohydrin were distilled off under reduced pressure, and then dissolved in methanol and filtered to remove salt and solvent to obtain 53.47 g of polyether with epoxy groups. The yield was 100%;

[0026] (2) Take 53.47g of the epoxy-terminated polyether obtained above, 21.38g of sodium methoxide, and 16.04g of 2.0G polyamide-amine with ethylenediamine as the core, dissolve it in 60.0g of methanol, stir it evenly, and heat it up to 55°C. Keep warm, cool down after the reaction is completed, adjust the pH to 7 with hydrochloric acid, and obtain a light yellow liquid demulsifier product C.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a preparation method for a multi-branched highly-watery crude oil demulsifier. The preparation method comprises the following steps that (1), polyether and epoxy chloropropane are dissolved in a solvent A, after even mixing is conducted, the temperature rises, under the action of a catalyst I, a reaction is conducted at the temperature of 40 DEG C-80 DEG C, and then epoxy-terminated polyether is generated; and (2), the generated epoxy-terminated polyether and a dendritic polyamide-amine compound are dissolved in a solvent B, a catalyst II is added, and a ring-opening reaction is conducted, so that the multi-branched highly-watery crude oil demulsifier is obtained. According to the preparation method for the multi-branched highly-watery crude oil demulsifier, the preparation method is simple, and the technique is safe; the obtained crude oil demulsifier has good demulsification ability for highly-watery crude oil, the demulsification speed is high, the dehydration rate is high, the interface is clear, and cleanliness of a water phase is good.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of petroleum processing, and in particular relates to a preparation method of a multi-branched high water content crude oil demulsifier. [0003] Background technique: [0004] At present, with the continuous exploitation of crude oil and the application of production increase measures such as water injection in oilfields, many oilfields have entered a period of high water cut, while Liuhua Oilfield, Wenchang Oilfield, Weizhou Oilfield, etc. located in the South China Sea have water cut The dehydration of crude oil has become a key link in the crude oil production process. The traditional demulsifiers are difficult to meet the performance of high water content crude oil on demulsifiers due to the disadvantages of slow demulsification speed and large dosage of chemicals. Therefore, new demulsifiers suitable for crude oil with high water content need to be developed urgently. [0005] Multi-branched mo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G81/00C08G65/337C10G33/04
CPCC08G65/337C08G81/00C08G2650/06C10G33/04
Inventor 靳晓霞徐俊英滕厚开侯洋王会孙继赵迎秋
Owner CNOOC TIANJIN CHEM RES & DESIGN INST