High-temperature-resisting anticorrosion coating for inner wall of steel thermal pipeline and construction technology

A technology for anti-corrosion coatings and thermal pipelines, applied in anti-corrosion coatings, coatings, fire-resistant coatings, etc., can solve problems such as uneven coatings on pipelines, complex construction techniques, and easy to fall off, and achieve smooth and defect-free surfaces. Smooth and uniform, stable construction parameters control

Inactive Publication Date: 2018-11-23
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, a layer of high-temperature resistant and heavy-duty organic protective layer is constructed on the inner surface of the steel thermal pipeline to isolate the metal from the corrosive medium, and the electrochemical protection or corrosion inhibition of the protective layer on the metal is used to protect the pipeline. Some construction techniques are complex and inefficient, and the processed pipe coating is uneven and prone to problems such as falling off. The cost of replacing new pipes is high, resulting in increased costs

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  • High-temperature-resisting anticorrosion coating for inner wall of steel thermal pipeline and construction technology
  • High-temperature-resisting anticorrosion coating for inner wall of steel thermal pipeline and construction technology

Examples

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Effect test

Embodiment 1

[0068] Step 1. Preparation of high temperature resistant anti-corrosion coating; put the base material and curing agent into a heating furnace or water bath device for preheating according to the mass ratio of 13:7, wherein the preheating temperature of the base material is 55°C, and the curing agent is preheated The heating temperature is 40°C. Stir evenly after preheating, add to the supply tank equipped with a heating and heat preservation device, continue to stir and keep warm, and wait for use; step 2, pretreatment of the inner surface of the steel pipe; after pretreatment, the inner surface of the steel pipe and the pipe Check the visible defects at the end; then sandblast or blast the inner surface of the steel pipe to remove rust; finally use a vacuum cleaner to remove all dust, debris and sand on the inner surface of the steel pipe; step 3, spray the inner surface of the steel pipe; put the pretreated steel pipe Transport to the spraying production line in the steel pi...

Embodiment 2

[0070] Step 1. Preparation of high-temperature resistant anti-corrosion coating; put the base material and curing agent into a heating furnace or water bath device for preheating according to the mass ratio of 7:3, the preheating temperature of the base material is 65°C, and the curing agent The temperature is 30°C, stir evenly after preheating, add to the supply tank equipped with heating and heat preservation devices, continue to stir and keep warm, and wait for use; step 2, pretreatment of the inner surface of the steel pipe; after pretreatment, the inner surface of the steel pipe and the end of the pipe Inspection of visible defects; then sandblasting or projectile rust removal on the inner surface of the steel pipe; finally, use a vacuum cleaner to remove all dust, debris and sand on the inner surface of the steel pipe; Step 3, spraying the inner surface of the steel pipe; transport the pretreated steel pipe Go to the spraying production line in the steel pipe and make it ...

Embodiment 3

[0072] Step 1. Preparation of high-temperature resistant anti-corrosion coating; put the base material and curing agent into a heating furnace or water bath device for preheating according to the mass ratio of 11:9, the preheating temperature of the base material is 70°C, and the curing agent The temperature is 25°C, stir evenly after preheating, add to the supply tank equipped with heating and heat preservation devices, continue to stir and keep warm, and wait for use; step 2, pretreatment of the inner surface of the steel pipe; after pretreatment, the inner surface of the steel pipe and the end of the pipe Inspection of visible defects; then sandblasting or projectile rust removal on the inner surface of the steel pipe; finally, use a vacuum cleaner to remove all dust, debris and sand on the inner surface of the steel pipe; Step 3, spraying the inner surface of the steel pipe; transport the pretreated steel pipe Go to the spraying production line in the steel pipe and make it...

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Abstract

The invention discloses a high-temperature-resisting anticorrosion coating for an inner wall of a steel thermal pipeline. The high-temperature-resisting anticorrosion coating is prepared from the following raw materials according to the ratio: 50 to 75 percent of a base material and 25 to 50 percent of a curing agent; the high-temperature-resisting anticorrosion coating is smooth and uniform and has relatively strong high temperature resistance and relatively strong corrosion resistance; the standard requirements of the inner wall of the steel thermal pipeline on the anticorrosion coating aremet. The invention further discloses a construction method of the high-temperature-resisting anticorrosion coating for the inner wall of the steel thermal pipeline; the construction method comprises the following four steps: preparing the high-temperature-resisting anticorrosion coating; pre-treating the inner surface of a steel pipe; carrying out spraying treatment on the inner surface of the steel pipe; checking the quality. According to the construction method, the production line work the construction of the anticorrosion coating is realized and the construction efficiency is extremely improved; meanwhile, a construction finished product has the characteristics of smooth and uniform coating, no flowing, no orange skin, no leakage points and the like and can meet the standard requirements of the inner wall of the steel thermal pipeline on the anticorrosion coating.

Description

technical field [0001] The invention belongs to the technical field of pipeline inner wall anti-corrosion technology, in particular to a high-temperature-resistant anti-corrosion coating on the inner wall of a steel thermal pipeline, and also relates to a construction process for a high-temperature-resistant anti-corrosion coating on the inner wall of a steel thermal pipeline. Background technique [0002] In recent years, my country's economic growth has been rapid, the national economy has been greatly developed and improved, and the process of urbanization has been continuously promoted, and the degree of urbanization has been continuously improved. All large, medium and small cities in my country have continued to expand to surrounding suburban counties. In the process of urban expansion, many urban living facilities have to be further constructed or improved. For northern my country, central heating facilities are a relatively important livelihood project, which is direc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/08B05D7/22B05D5/00
CPCB05D5/00B05D7/222C09D5/08C09D5/18
Inventor 杜永科毛浓召杨继平吴加友任春霞陈立涛贝广齐段素梅
Owner BC P INC CHINA NAT PETROLEUM CORP
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