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Poly-alpha-olefin drag reduction agent and preparation method thereof

A technology of drag reducer and olefin, which is applied in the field of polyα-olefin drag reducer and its preparation, can solve the problems of poor shear resistance of drag reducer, improve shear resistance, reduce production cost, and is not easy to self-polymerize Effect

Inactive Publication Date: 2015-05-06
XINJIANG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a polyalpha-olefin drag reducer and its preparation method, which overcomes the deficiencies of the prior art and can effectively solve the problem of poor shear resistance of the existing drag reducer

Method used

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Effect test

Embodiment 1

[0019] Embodiment 1, the raw material composition of this polyalpha-olefin drag reducer is alpha-olefin, solvent, Ziegler Natta catalyst, gas; Gas is ethylene or propylene gas; The proportioning of raw material is alpha-olefin 5ml to 600ml, 10ml to 600ml of solvent, the content of Ziegler-Natta catalyst in the mixture of solvent and α-olefin is 0.45g / L to 17g / L, the volume of ethylene or propylene gas is at a pressure of 0.01 MPa to 0.5 MPa and a temperature of 15 ℃ to 28 ℃ is 25 L to 300L; the polyα-olefin drag reducer is obtained according to the following steps: the first step is to vacuumize the polymerization tank and replace it with nitrogen for 3 to 5 times, and add the polyalphaolefin drag reducer to the polymerization tank The required amount of solvent and α-olefin and stirred evenly; the second step, adding a cooling medium in the interlayer of the polymerization kettle to control the temperature of the material in the polymerization kettle at -30 ° C to 30 ° C; the ...

Embodiment 2

[0020] Embodiment 2, the raw material of this polyalpha-olefin drag reducer is composed of alpha-olefin, solvent, Ziegler-Natta catalyst, gas; Gas is ethylene or propylene gas; The proportioning of raw material is alpha-olefin 5ml or 600ml, 10ml or 600ml of solvent, the content of Ziegler-Natta catalyst in the mixture of solvent and α-olefin is 0.45g / L or 17g / L, the volume of ethylene or propylene gas is at a pressure of 0.01 MPa or 0.5 MPa, and a temperature of 15 °C or 28 °C is 25 L or 300L; the polyα-olefin drag reducer is obtained according to the following steps: first step, vacuumize the polymerization tank and replace it with nitrogen for 3 to 5 times, and add the The required amount of solvent and α-olefin and stirred evenly; the second step, adding a cooling medium in the interlayer of the polymerization kettle to control the temperature of the material in the polymerization kettle at -30 ° C or 30 ° C; the third step, under the protection of nitrogen to the Add the r...

Embodiment 3

[0021] Embodiment 3, as the optimization of above-mentioned embodiment: embodiment 3 α - Olefins having 3 to 20 carbon atoms α - Alkenes.

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Abstract

The invention relates to the technical field of drag reduction agents, and provides a poly-alpha-olefin drag reduction agent and a preparation method thereof. The poly-alpha-olefin drag reduction agent comprises alpha-olefin, solvent, a Ziegler-Natta catalyst and gas, wherein the gas is ethylene or propylene gas. The preparation method comprises the following steps: adding the Ziegler-Natta catalyst into the alpha-olefin and solvent in a nitrogen gas protective atmosphere, performing polymerization reaction on the long-chain olefin part, then introducing the ethylene or propylene gas, and performing binary copolymerization reaction to obtain the poly-alpha-olefin drag reduction agent. Thus, the poly-alpha-olefin drag reduction agent has the characteristics that the ethylene or propylene gas raw material is less prone to self polymerization in the reaction and is cheap and accessible, and the obtained poly-alpha-olefin drag reduction agent is high in drag reduction rate; and the production cost is lowered, and the shearing resistance is improved.

Description

technical field [0001] The invention relates to the technical field of drag reducers, and relates to a polyalpha-olefin drag reducer and a preparation method thereof. Background technique [0002] Drag reducer is a chemical additive that can reduce the friction of liquid flow. The polymer molecules are stretched in the fluid. Due to its deformation or orientation, it absorbs the turbulent energy and reduces the energy loss in the flow process. Therefore, the oil When the product is transported in the pipeline, adding drag reducing agent can play the role of increasing transportation and saving energy. [0003] The drag reduction phenomenon of high molecular polymers has been studied by Toms in the 1940s. In the 1960s, many researchers from all over the world proposed various synthesis methods of drag reducers and applied for patents. It was not until 1979 that the drag reducer produced by the American Conoco Company was applied in industrial production. The oil-soluble dra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F255/08C08F255/02C08F210/02C08F210/06C08F2/06F17D1/17
Inventor 陆江银齐艳杰胡子昭
Owner XINJIANG UNIVERSITY
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