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Antisepsis and antidrag chemical additive of natural gas pipeline and preparation method thereof

A chemical additive, natural gas pipeline technology, applied in the direction of pipeline anti-corrosion/anti-rust protection, pipeline protection, anti-corrosion coating, etc., can solve the problems of increasing the potential accident rate, reducing the actual application effect, complicated operation, etc., to achieve good anti-corrosion function, reduce Collision friction energy loss, good effect

Active Publication Date: 2011-05-04
PIPECHINA SOUTH CHINA CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

CN101074344A discloses a natural gas pipeline drag reducer and its preparation method, which only has the effect of drag reduction
It is often necessary to inject different types of additives multiple times, the operation is complicated, and the potential accident rate is increased, and there is mutual inhibition between various additives, which greatly reduces the actual application effect

Method used

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  • Antisepsis and antidrag chemical additive of natural gas pipeline and preparation method thereof
  • Antisepsis and antidrag chemical additive of natural gas pipeline and preparation method thereof
  • Antisepsis and antidrag chemical additive of natural gas pipeline and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0014] Embodiment 1. in the 500ml three-neck bottle that has thermometer and dropping funnel device, add platinum catalyst, add the mixture of trimethoxysilane (146 grams) and α-dodecene (168 grams) in dropping funnel, Wherein, the upper end of the dropping funnel is connected with the anhydrous calcium chloride drying tower with a grinding mouth elbow, the molar ratio of trimethoxysilane and α-dodecene is 1.2:1, and the molar ratio of platinum catalyst to α-dodecene is 11 ×10 -6 : 1. Open the dropping funnel, drop an appropriate amount of trimethoxysilane and α-dodecene mixture, heat in a water bath with magnetic stirring and start stirring, after the temperature of the mixture rises to 55°C, continue to drop the mixture at a constant temperature After dropping, close the valve of the dropping funnel to completely seal the three-necked bottle, slowly heat up to about 73°C, and the mixed solution is in a slightly boiling state. After reacting at a constant temperature for 2 ...

Embodiment 2

[0016] Embodiment 2. Take trimethoxysilane (146 grams) and α-dodecene (168 grams) as raw material, be 1: 1 and platinum catalyst (platinum catalyst and α-dodecene mol ratio are 10×10 -6- : 1) dodecyltrimethoxysilane is prepared under catalytic conditions, then methyltrimethoxysilane and synthetic dodecyltrimethoxysilane are successively added to the solvent in a molar ratio of 0.1:1 A 50wt.% solution is prepared by mixing n-hexane to form a chemical additive with anti-corrosion and drag-reducing functions.

[0017] The contact angle of the superhydrophobic molecular film formed by the chemical additive obtained in this embodiment on the inner wall of the steel block of the natural gas pipeline is 149°, and its static corrosion inhibition efficiency is 78%. Tested on a natural gas simulated pipeline, the average drag reduction rate is 8.5%, and the validity period is greater than 60 days.

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Abstract

The invention discloses an antisepsis and antidrag chemical additive of natural gas pipeline and a preparation method thereof, and relates to the technical field of anticorrosion of common metal material, composition of macromolecular compound and pipeline system. Dodecyl trimethoxy silane is prepared by trimethoxy silane and Alpha-laurylene of which the mole ratio is 1:1-1.3:1 and a platinum catalyst under catalyzing, wherein the mole ratio of the platinum catalyst to Alpha-laurylene is 10*10-6:1-12*10-6:1; and the methyltrimethoxy silane and the synthetic dodecyl trimethoxy silane are successively added to a solvent normal hexane with the mole ratio as 0:1-0.1:1 and mixed and configured into a solution of 40-60wt%. In the invention, the pipe wall has strong adsorption force, functions are multiple, the process is simple, and the effect is preferable.

Description

technical field [0001] The invention relates to a chemical additive for anticorrosion and drag reduction of natural gas pipelines and a preparation method thereof, and relates to the technical fields of anticorrosion of general metal materials, composition of polymer compounds and pipeline systems. Background technique [0002] Due to the unbalanced distribution of global oil and gas resources and the large regional differences in demand, a huge storage and transportation system is needed to connect oil and gas resources from the production site to the user. Once oil and gas transportation is blocked, oil and gas consumption areas and production areas will cause huge economic loss. Natural gas is the least polluting and cleanest energy source, so its proportion in primary energy is increasing rapidly, and the burden on the natural gas pipeline network is increasing day by day. In various regions at home and abroad, the demand for natural gas varies greatly in different seas...

Claims

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Application Information

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IPC IPC(8): C09D183/00C09D5/08F16L58/04
Inventor 郭海峰张志恒李春漫代晓东杨法杰贾子麒常维纯高艳清李国平
Owner PIPECHINA SOUTH CHINA CO
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