Method for applying anti-corrosion adhesive layer to lining of carbon steel pipeline

Abstract

The invention relates to a method for applying an anti-corrosion adhesive layer to the lining of a carbon steel pipeline. The method is characterized in that after the inner wall of the carbon steel pipeline is subjected to sand blasting and derusting, a bonding adhesive layer is applied; bonding adhesives are applied to the outer wall of the portion, of which the outer diameter is matched with the inner diameter of the carbon steel pipeline, of an anti-corrosion adhesive pipe, and the anti-corrosion adhesive pipe is conveyed into the carbon steel pipeline and is bonded to the inner wall of the carbon steel pipeline; gas is blown inwards so that the anti-corrosion adhesive pipe can be expanded to be tightly attached to the inner pipe wall, and the anti-corrosion layer is formed. The interior of the carbon steel pipeline is coated with the adhesive cement after being subjected to sand blasting and derusting, the adhesive pipe manufactured in advance is attached to the inner wall of the pipeline, and the seamless anti-corrosion lining adhesive layer is formed. The method has the advantages that the anti-permeability performance and corrosion resistance are good, manufacturing can be conveniently carried out, and the service life is long.

Description

technical field [0001] The invention relates to a method for lining a carbon steel pipeline with an anticorrosion rubber layer, and relates to a method for anticorrosion of a metal pipeline, in particular to a method for anticorrosion of the inner wall of a carbon steel pipeline. Background technique [0002] In the fields of hydrometallurgy, chemical industry, etc., there are especially problems of corrosion of acidic media in pipelines. Although there are many carbon steel pipeline anti-corrosion rubber lining technologies, the overall performance is not good, especially the rubber lining layer is easy to fall off. The impermeability is poor, which makes it difficult to repair and replace the pipeline after corrosion. For the corrosion of pipelines, after a lot of research, the protection problem of the outer wall of the pipeline has basically been solved, but the corrosion protection problem of the inner wall of the pipeline has not been completely solved. At present, the...

AI Technical Summary

Problems solved by technology

[0002] In the fields of hydrometallurgy, chemical industry, etc., there are especially problems of corrosion of acidic media in pipelines. Although there are many carbon steel pipeline anti-corrosion rubber lining technologies, the overall performance is not good, especially the rubber lining layer is easy to fall off. The impermeability is poor, which makes it difficult to repair and replace the pipeline after corrosion

For the corrosion of pipelines, after a lot of research, the protection problem of the outer wall of the pipeline has basically been solved, but the corrosion protection problem of the inner wall of the pipeline has not been completely solved. At present, the anticorrosion process of the inner wall of the pipeline mainly adopts the rubber lining process, but the lining rubber is bonded to the inner wall of the pipeline. Finally, the rubber-lined layers need to be combined with each other in an overlapping manner, which will form a seam in the rubber-lined layer, and the seam is prone to leakage, causing the coating to fall off, resulting in corrosion of the pipeline