New steel pipeline anti-corrosion process adopting modified asphalt and polyethylene

A technology of modified asphalt and polyethylene, which is applied in pipeline anti-corrosion/anti-rust protection, pipeline protection, damage protection, etc., can solve the problems of large environmental pollution, high energy consumption and poor anti-corrosion effect in anti-corrosion process, so as to ensure sustainable Sexuality, environmental protection, fast production effect

Inactive Publication Date: 2014-10-29
秦皇岛秦鼎高新环保科技开发有限公司
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AI Technical Summary

Problems solved by technology

[0006] In view of the problems existing in the external anti-corrosion process of steel pipelines described in the background technology, the present invention provides a new anti-corrosion process for extrusion-coated modified asphalt polyethylene steel pipelines, which solves the problem of large environmental pollution and energy consumption in the existing anti-corrosion process. Large, poor anti-corrosion effect, short anti-corrosion life and other technical problems

Method used

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Examples

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Embodiment 1

[0011] Example 1. The new anticorrosion process of the modified asphalt polyethylene steel pipeline firstly mixes 100Kg of anticorrosion asphalt, 8Kg of hydroxylammonium liquid rubber, 6Kg of acrylic copolyester, 5Kg of dibutyl phthalate, 80Kg of talcum powder, poly Put 8Kg of ethylene powder into the high-speed mixer, form a uniform modified asphalt powder through high-speed mixing, and then derust the steel pipe, transfer it to the pipe, heat it with intermediate frequency, and spray it with powder, and then extrude it through the round die of the extruder to coat or Side winding wraps the outer surface of the steel pipe to form an anti-corrosion layer, and then extrudes through another plastic extruder round die to coat or side-wraps a layer of PE on the outside of the modified asphalt anti-corrosion layer to form a protective layer, thus forming a The complete anti-corrosion structure of the modified asphalt polyethylene steel pipeline is water-cooled and finalized to form ...

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Abstract

The invention relates to a new steel pipeline anti-corrosion process adopting modified asphalt and polyethylene. The process comprises the following steps: firstly, removing rust of a steel pipe, conveying and connecting the pipe, heating at medium frequency, spraying powder, putting modified asphalt powder in a high-speed mixer to form uniform modified asphalt powder through high-speed mixing, extruding the powder through an extruder circular die, coating or laterally wrapping and coating the outer surface of the steel pipe with the powder to form an anti-corrosion layer, extruding PE through another plastic extruder circular die, coating or laterally wrapping and coating the modified asphalt anti-corrosion layer with a layer of PE to form a protecting layer, thereby forming a complete modified asphalt and polyethylene steel pipeline anti-corrosion structure, wherein the raw materials are matched in parts by weight. By means of the process, the technical problems that existing anti-corrosion processes are serious in environmental pollution, large in energy consumption, bad in anti-corrosion effect, short in anti-corrosion life and the like are solved.

Description

Technical field: [0001] The invention relates to a new process for external anticorrosion of buried pipelines, in particular to a new process for extrusion coating modified asphalt polyethylene steel pipelines for anticorrosion. Background technique: [0002] At present, in various domestic oil fields and urban construction, there are many external anti-corrosion processes for steel pipelines, such as asphalt, glass cloth winding anti-corrosion process, glass fiber reinforced plastic anti-corrosion process, powder coating electrostatic spray anti-corrosion process, 2PE, 3PE anti-corrosion process, etc.; currently used Most of them are: asphalt and glass cloth winding anti-corrosion process, 3PE anti-corrosion process, but asphalt and glass cloth winding anti-corrosion process, the pollution is large, boiling asphalt consumes a lot of coal, emits a large amount of greenhouse gases, waste residues, harmful gases, and pollutes the environment. Harm to the human body; Take the m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L67/00C08L23/06C08L21/00C08K5/12C08K3/34F16L58/12
Inventor 孟鋆辉
Owner 秦皇岛秦鼎高新环保科技开发有限公司
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