A hyperbranched polymer flocculation demulsifier for treating oily and high-salt industrial wastewater and its preparation method and use method

A technology of hyperbranched polymer and flocculation demulsifier, applied in chemical instruments and methods, special compound water treatment, water/sludge/sewage treatment, etc. The single function of the flocculant and the reduction of the hydrodynamic radius can achieve the effect of good demulsification effect, strong flocculation ability and large hydrodynamic radius.

Active Publication Date: 2018-11-27
杭州绿邦科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, under normal circumstances, the existing polymer flocculants have a single function and cannot perform the dual functions of demulsification and flocculation; they are easy to settle in the high-salt wastewater system, and may even cause secondary pollution, making it difficult to achieve a good treatment effect
In addition, the commonly used linear cationic, anionic and amphoteric polyacrylamide flocculants, in high salt concentration brine, the presence of small molecule electrolytes sharply reduces the hydrodynamic radius of the flocculant polymer, resulting in a decrease in viscosity and a decrease in flocculation ability

Method used

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  • A hyperbranched polymer flocculation demulsifier for treating oily and high-salt industrial wastewater and its preparation method and use method
  • A hyperbranched polymer flocculation demulsifier for treating oily and high-salt industrial wastewater and its preparation method and use method
  • A hyperbranched polymer flocculation demulsifier for treating oily and high-salt industrial wastewater and its preparation method and use method

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preparation example Construction

[0033] The present invention also provides a preparation method of the above-mentioned hyperbranched polymer flocculation demulsifier for treating oil-containing high-salt industrial wastewater, which is characterized in that it comprises the following steps:

[0034] Add the aqueous solution of the first hyperbranched polyacryloyl ethylenediamine hydrochloride macromonomer dropwise to the mixed aqueous solution formed by the water-soluble monomer and the second hyperbranched polyacryloyl ethylenediamine hydrochloride macromonomer , carry out copolymerization reaction under the existence condition of initiator, obtain hyperbranched macromolecule flocculation demulsifier;

[0035] The preparation method of the first hyperbranched polyacryloyl ethylenediamine hydrochloride macromer or the second hyperbranched polyacryloyl ethylenediamine hydrochloride macromer is:

[0036] In an inert gas environment, acryloylethylenediamine hydrochloride undergoes an addition reaction to obtain...

Embodiment 1

[0062] 4g of acryloylethylenediamine hydrochloride was placed in a three-necked flask, and under the protection of nitrogen, the reaction device was placed in high-temperature silicone oil. The temperature was raised to 210° C., the reaction was carried out at this temperature for 4 hours, and then cooled to room temperature. The reaction product was dissolved in 5 ml of deionized water, filtered, and freeze-dried to obtain 3.1 g of polyacryloylethylenediamine hydrochloride as a brown-yellow solid.

[0063] Dissolve 0.1mol methacrylamide and 0.002mol polyacryloylethylenediamine hydrochloride in deionized water, and 0.008mol polyacryloylethylenediamine hydrochloride into a four-necked reaction flask equipped with a condenser, mechanical stirrer, and nitrogen gas inlet. The amine hydrochloride was dissolved in deionized water, and added dropwise into the reaction flask through a constant pressure titration funnel to obtain a mixed solution. Nitrogen gas was passed into the mixe...

Embodiment 2

[0068] 4g of acryloylethylenediamine hydrochloride was placed in a three-necked flask, and under the protection of nitrogen, the reaction device was placed in high-temperature silicone oil. The temperature was raised to 230° C., the reaction was carried out at this temperature for 8 hours, and then cooled to room temperature. The reaction product was dissolved in 5 ml of deionized water, filtered, and freeze-dried to obtain brown-yellow solid polyacryloylethylenediamine hydrochloride.

[0069] Dissolve 0.1mol of acrylamide and 0.1mol of polyacryloylethylenediamine hydrochloride in deionized water, and 0.1mol of polyacryloylethylenediamine hydrochloride into a four-necked reaction flask equipped with a condenser, mechanical stirrer, and nitrogen inlet. The acid salt was dissolved in deionized water, and added dropwise into the reaction flask through a constant pressure titration funnel to obtain a mixed solution. Nitrogen gas was blown into the mixed solution for 30 minutes, t...

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Abstract

The invention provides a hyper-branched macromolecular flocculation demulsifying agent, which has the characteristics of many terminated functional group, high dissolubility and low viscosity. The hyper-branched macromolecular flocculation demulsifying agent is not liable to bend in a saline medium and has large hydrodynamic radius, high flocculation capability and high flocculation speed. Meantime, the hyper-branched macromolecular flocculation demulsifying agent has a good demulsifying effect on oil-water emulsion due to the branched structure and high electric charge density.

Description

technical field [0001] The invention belongs to the technical field of industrial wastewater treatment, and in particular relates to a hyperbranched polymer flocculation demulsifier for treating oily and high-salt industrial wastewater, a preparation method and a use method thereof. Background technique [0002] With the rapid development of my country's economy, the problem of industrial wastewater pollution is becoming more and more serious. High salinity, high COD, and high oil content have become the main characteristics of industrial wastewater, especially petroleum industrial wastewater. In the process of oil production, with the application of enhanced oil recovery technologies such as combined oil flooding and fracturing, the use of a large number of surface active substances makes the oil and water in the produced fluid present a highly stable state, and effective oil-water separation requires a fracture with superior performance. milk system. At the same time, a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F220/56C08F220/06C02F1/56
CPCC02F1/56C02F2305/04C08F283/00C08F220/56C08F220/06
Inventor 徐昆谭颖王海卫王丕新汪洋梁学称刘秀生路璀阁张文德
Owner 杭州绿邦科技有限公司
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