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Preparation method for poly-2-olefine drag reducer of pipe oil transporting product

A technology for pipeline oil transportation and drag reducing agent, which is applied in the field of polymer compound composition and pipeline system, and can solve the problems of difficult control and complicated production process.

Inactive Publication Date: 2004-09-22
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, its production process is still relatively complicated and difficult to control.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1: Polymerized monomer α-olefins are selected from 1-hexene, 1-octene and 1-decene mixed in a ratio of 1:3:5, and the weight ratio in the reaction mixture is 30%; the catalyst is selected from metallocene Catalyst and corresponding co-catalyst, the content of metallocene catalyst in the reactant is 1000 moles of olefin / every mole of catalyst, the mol ratio of co-catalyst and metallocene catalyst is 6: 1, base liquid selects polyhexyl acrylate for use, in reaction mixture The weight ratio in the reaction mixture is 65%; the hydrocarbon solvent is heptane, and the weight ratio in the reaction mixture is 5%. The method is to first add the polymerized monomer into a closed reaction container, add a catalyst to react under the condition of being isolated from the air and stirring, slowly add the base liquid and liquid hydrocarbons within 12 hours of the beginning of the reaction, and keep it in the temperature range of -10 ~ 10 ° C Respond at normal pressure for 8 da...

Embodiment 2

[0014] Embodiment 2: Polymerized monomer α-olefin is selected 1-octene, and the weight ratio in reaction mixture is 50%; Catalyst selects metallocene catalyst and corresponding cocatalyst, and the content of metallocene catalyst in the reactant is 2000 moles Olefin / per mole of catalyst, the molar ratio of co-catalyst to metallocene catalyst is 20:1, nonylphenol polyoxyethylene ether is selected as the base liquid, and the weight ratio in the reaction mixture is 50%. The method is to first add the polymerized monomer into the closed reaction container, add the catalyst to react under the condition of blocking the air and stirring, and slowly add the base liquid and liquid hydrocarbons within 5 hours after the beginning of the reaction. Reaction at normal pressure for 5 days. Finally, the molecular weight of the obtained polymer is 4.0×10 6 1. The polyalphaolefin drag reducer slurry liquid with a product viscosity of 2900 centipoise can be directly transported to the production...

Embodiment 3

[0015] Embodiment 3: Polymerization monomer α-olefin selects 1-octene and 1-dodecene to mix by the ratio of 4: 1, and the weight ratio in the reaction mixture is 20%; Catalyst selects metallocene catalyst and corresponding cocatalyst for use , the content of metallocene catalyst in the reactant is 500 moles of olefins / mole of catalyst, the mol ratio of co-catalyst and metallocene catalyst is 3: 1, base liquid is selected polyacrylic acid isooctyl ester, and the weight ratio in reaction mixture is 60%; The hydrocarbon solvent is selected heptane, and the weight ratio in the reaction mixture is 20%. The method is to first add the polymerized monomer into the closed reaction container, add the catalyst to react under the condition of blocking the air and stirring, slowly add the base liquid and liquid hydrocarbons within 10 hours after the beginning of the reaction, and keep it in the temperature range of -10 ~ 10 ℃ Inner normal pressure reaction for 10 days. Finally, the molecu...

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Abstract

A process for preparing the alpha-olefine as the drag reduce used for delivering oil in pipeline includes such steps as loading monomers into reactor, adding catalyst while stirring in the condition of isolating air, adding the oil-soluble polyester, polyether or ester-ether copolymer solution to which the alpha-olefine polymer is not dissolved, and reacting at -50-20 deg.C for 3-10 days. Its advantages are simple process, and high molecular weight, high effect, high stability and low viscosity of product.

Description

[0001] Involved [0002] The invention relates to the field of polymer compound composition and pipeline system, and relates to a preparation method of a polyalpha-olefin drag reducer used for pipeline oil transportation. Background technique [0003] Since the frictional resistance restricts the flow of the fluid in the pipeline, resulting in a decrease in the pipeline output or an increase in energy consumption, a small amount of polymer drag reducer is often injected into the fluid in the oil pipeline to reduce the flow rate in the turbulent state. flow resistance. Since the first successful application of the drag reducer produced by Connock Corporation of the United States to the Alaska crude oil pipeline in 1979, there have been mainly two synthetic methods for obtaining drag-reducing polymers with α-olefins as monomers, namely solution polymerization and bulk. polymerization. And it remains so to this day. [0004] The original poly-alpha-olefin drag reducer was prep...

Claims

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Application Information

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IPC IPC(8): C08F10/00F17D1/16
Inventor 关中原税碧垣李春漫常维纯
Owner PIPECHINA SOUTH CHINA CO
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