Water-based drag reducer and application thereof

Abstract

The invention discloses a water-based drag reducer and application thereof. The water-based drag reducer comprises the following components in parts per million by weight: 30-200ppm of non-ionic surface active agent fatty alcohol-polyoxyethylene ether, 5-40ppm of defoaming agents or 5-40ppm of organopolysiloxane defoaming agents and 5-30ppm of dodecyl dimethyl ammonium bromide bactericides, wherein the 5-40ppm of defoaming agents or the 5-40ppm of organopolysiloxane defoaming agents are emulsified by using special emulsifiers and taking methyl polysiloxane and nanometer-grade silicon dioxide as main bodies. A method of mechanical kneading with multi-layer fine gauze filtering is adopted for mixed preparation so that the non-ionic surface active agent is dissolved in water in a foamy way; the adding temperature of the drag reducer is 5 DEG C-70 DEG C; when the drag reducer is used in a horizontal pipeline, the energy consumption of a water pump motor is reduced more than 20 percent at the same flow rate; and the increase rate of the water circulating flow rate of the horizontal pipeline using the drag reducer is 10-20 percent. The water-based drag reducer not only changes boundary conditions of the fluid interior and fluid and a pipe wall, but also changes the physical, chemical and mechanical properties of the fluid interior and boundary materials, thereby greatly reducing the resistance of a delivery pipeline and achieving the purpose of electricity saving of the water pump motor; and in addition, the water-based drag reducer and a validation method are scientific, reasonable and practical and open a new way for reducing the energy consumption of a circulating water system.

Description

technical field [0001] The invention relates to a drag reducer, especially a water-based drag reducer, which is suitable for application in circulating water systems. Background technique [0002] The chemical agent used to reduce fluid flow resistance is called drag reducer, which is divided into two types: one is oil-based (phase) drag reducer, which is used for crude oil and refined oil pipeline transportation; the other is water-based Resisting agent, used in circulating water system. [0003] There are already many oil-based (phase) drag reducer patents and products, such as: ①Patent No. 200610083720.4, a water-soluble drag reducer for oil wells; ②Patent No. 02806581.6, amorphous ultra-high molecular weight polyolefin used as a drag reducer Forming method; ③ Patent No. 03119743.4, a preparation method of poly-alpha-olefin drag reducer for pipeline oil products; ④ Patent No. 99808944.3, a manufacturing method of amorphous ultra-high molecular weight poly-alpha-olefin dr...

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Problems solved by technology

[0005] Some articles about drag reduction technology have also been published on the Internet, such as: ① Effect of surfactant addition on the friction and pressure drop characteristics of gas-liquid two-phase flow [Xia Guodong, Wang Minluyuan, Wei Ma Chongfang (School of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022) Mavis (Institute of Process Engineering, University of Hannover, Hannover 30167, Germany)], the article studies the friction and pressure drop characteristics of gas-liquid two-phase flow using sodium dodecyl sulfate (SDS) as a drag reducing additive ;The effect of using sodium dodecyl sulfate (SDS) as a water-based drag reducer is not ideal, and the flow rate increase rate is only 3.6%, which has no practical value

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