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Preparation method of high efficiency broad spectrum deemulsifier

A broad-spectrum demulsifier and high-efficiency technology, which is applied in the field of high-efficiency broad-spectrum demulsifier preparation, can solve the problems that the demulsifier has a complex effect on the emulsion, and there is no unified opinion on the action mechanism of the demulsifier.

Inactive Publication Date: 2005-05-25
XI'AN PETROLEUM UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complex effect of demulsifiers on emulsions, although a lot of research work has been done in this field, there is no unified opinion on the mechanism of demulsifiers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1: Add 11.4g 1,2-propanediol (0.15mol) and 0.54g KOH to the reactor, dehydrate at 0.08~0.09Mpa vacuum degree, 60~90°C for 1h, and add epoxy at 120~130°C Propane (PO) 169g, absorb to negative pressure to get oil head.

[0026] Weigh 60g of the above-mentioned oil head, KOH 0.5g, add PO 104.4g at a temperature of 130~140°C, absorb to negative pressure, then add 79.2g of ethylene oxide (EO), absorb to negative pressure to obtain polyether B 3 . The measured hydroxyl value was 81.27.

Embodiment 2

[0027] Example 2: Add 22.8g of bisphenol A (0.1mol) and 0.28g of KOH in the reactor, dehydrate at 60~90°C for 1h at a vacuum degree of 0.08~0.09Mpa, and add propylene oxide ( PO) 58g, absorbed to negative pressure to get the oil head.

[0028] Weigh 24.8g of the above oil head, KOH 0.4g, add PO 65.25g at a temperature of 130~140°C, absorb to negative pressure, then add 49.5g of ethylene oxide (EO), absorb to negative pressure to obtain polyether E 2 . The measured hydroxyl value was 64.08.

Embodiment 3

[0029] Embodiment 3: in the reaction bottle that agitator and vacuum distillation device are housed, add the polyether B of 34.5g (0.025mol) 3 , add 3.7g of adipic acid (0.025mol) and 0.4g of p-toluenesulfonic acid, react at 140~155°C under normal pressure for 1.5h, and then react at 150~165°C for 2.5h at 0.05~0.09Mpa vacuum degree to obtain the expanded chain product B 3 K.

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PUM

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Abstract

An efficient broad-spectrum demulsifier is prepared from propanediol and biphenol A through preparing the linear block copolyether or epoxy propane and epoxy ethane, enlarging chain by bibasic acid or its anhydride, and adding the ions of metal chosen from Fe, Co, Ni, Cu, Al, Cr, Zn, Mn and Sn to form match.

Description

[0001] Involved areas [0002] The invention relates to a preparation method of a high-efficiency broad-spectrum demulsifier. Specifically, the demulsifier is obtained by adding polyvalent metal ions after several linear polyethers undergo chain extension reactions of dibasic acids or dibasic anhydrides. The demulsifier can be used The supramolecular structure is formed at the oil-water interface, which greatly enhances the performance of the demulsifier. This kind of demulsifier can be used not only for the dehydration of oilfield thin oil, heavy oil, and polymer injection production fluid, but also for the desalination of crude oil in petrochemical plants. Background of the invention: [0003] Demulsifier is an important oilfield chemical agent in oilfields and refineries. At present, the research on demulsifiers at home and abroad mainly uses methods such as changing the head, changing the tail, adding bones, extending chains, grafting, cross-linking, and compounding to tre...

Claims

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Application Information

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IPC IPC(8): B01D17/04C08G65/324
Inventor 徐家业张喜文赵世成陈世军张群正余兰兰
Owner XI'AN PETROLEUM UNIVERSITY
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