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Prefimling agent for oil pipe line

A technology for oil pipeline and pre-filming agent, which is applied in the direction of pipeline protection, pipe/pipe joint/pipe fitting, pipeline anti-corrosion/anti-rust protection, etc. It can solve the problems of corrosion and rust on the pipeline wall, and achieve good effect and easy storage. and the effect of short use and pre-filming time

Inactive Publication Date: 2006-04-05
SHANGHAI WANSEN WATER TREATMENT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, often after several years of use, rust or corrosion will appear on the pipe wall

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The preferred pre-film formulation of this embodiment is: sodium polyphosphate 70%, zinc sulfate 30% (percentage by weight).

[0017] The above-mentioned substances weighed in a certain proportion are dissolved in water at 10 mg / L for subsequent use.

[0018] Instructions:

[0019] 1. Rinse the pipeline system until the water quality is clear and basically free of impurities.

[0020] 2. Add the metal surface pre-coating agent solution of the present invention through the automatic sampling circulation system. Generally, according to the scale of the pipeline system, the circulation time is properly controlled to ensure uniform concentration of the entire system.

[0021] 3. Turn on the circulation pump for at least 2 hours a day, and turn it into the daily operation state after a dense and uniform protective film is formed on the surface of the pipeline.

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PUM

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Abstract

The present invention pertains to the field of chemical industry, wherein a prefilming agent for petroleum pipelines is disclosed, which comprises phosphates and zinc sulfate, wherein the phosphate can be sodium polyphosphate. The prefilming agent can form a compact and stable film onto the surface of pipe-lines.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a treatment agent for metal pipelines, more specifically, the invention relates to a pre-film agent for oil pipelines. Background technique [0002] For systems such as oil pipelines, the characteristics are that the pipelines are huge and expensive, so they are required to be used for a long time, which puts forward high requirements for the stability of the pipeline walls. However, often after several years of use, rust or corrosion will appear on the pipe wall. If it is pre-filmed in advance, it can effectively improve the stability of the pipeline and prolong its service life. [0003] To sum up, the purpose of pre-filming on the surface of the pipeline is to pre-form a complete and corrosion-resistant protective film on the metal surface so that it can remain free from corrosion for a long time. [0004] After long-term research, the present inventor has proposed a simple bu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D1/00F16L58/04
Inventor 沈志昌
Owner SHANGHAI WANSEN WATER TREATMENT CO LTD
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