Anti-corrosion corrosion inhibitor for heat supply network and preparation method and application method of anti-corrosion corrosion inhibitor

A corrosion inhibitor and anti-corrosion technology, applied in the field of corrosion protection, can solve the problems of anti-corrosion of heating network, achieve the effect of preventing stainless steel pitting corrosion and galvanic corrosion, and being friendly to people or the environment

Active Publication Date: 2017-05-31
沈阳防锈包装材料有限责任公司
View PDF3 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heating network anti-corrosion corrosion inhibitor and its preparation and use method to overcome the deficiencies of existing corrosion inhibitors and solve the perennial anti-corrosion problem of heating network

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] An anti-corrosion and corrosion inhibitor for heating network, each component is composed by weight parts, 20 parts of sodium sulfite, 12 parts of trisodium phosphate, 8 parts of sodium hydroxide, 15 parts of cyclohexylamine nitrite and 45 parts of imidazoline. Take the corrosion inhibitor and add 100mg / L to the desalinated water. The simulation experiment uses a carbon steel test piece of No. 20. After 6 hours of testing at 100°C, there is no local corrosion or pitting corrosion on the surface of the test piece, and the corrosion rate is 0.05mm / a.

Embodiment 2

[0014] An anti-corrosion and corrosion inhibitor for heating network, each component is composed by weight, 25 parts of acetone oxime, 12 parts of sodium tripolyphosphate, 8 parts of ammonia water, 25 parts of mercaptobenzothiazole and 30 parts of cyclohexylamine carbonate. Take this corrosion inhibitor and add 100mg / L to the desalinated water. The simulation experiment uses a carbon steel test piece of No. 20. After 6 hours of testing at 100°C, there is no localized corrosion or pitting corrosion on the surface of the test piece, and the corrosion rate is 0.03mm / a.

Embodiment 3

[0016] An anti-corrosion and corrosion inhibitor for heating network, which is composed of components by weight: 20 parts of dimethyl ketoxime, 12 parts of trisodium phosphate, 15 parts of monoethanolamine, 15 parts of benzotriazole, and hexamethylenetetramine 38 servings. Take this corrosion inhibitor and add 100mg / L to the desalinated water. The simulation experiment uses a carbon steel test piece of No. 20. After 6 hours of testing at 100°C, there is no localized corrosion or pitting corrosion on the surface of the test piece, and the corrosion rate is 0.02mm / a.

[0017] This product inspection is carried out by simulation experiment. The method is to use No. 20 carbon steel and stainless steel test pieces with a specification of 50mm*25mm respectively, immerse them in the water sample liquid of the heating network water, remove the salt water, and throw the corrosion inhibitor so that the concentration is 100mg / L (the pure product is contained in 1,000ml) dosage). Afte...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
corrosion rateaaaaaaaaaa
Login to view more

Abstract

The invention discloses an anti-corrosion corrosion inhibitor for a heat supply network and a preparation method and application method of the anti-corrosion corrosion inhibitor. The anti-corrosion corrosion inhibitor is characterized by comprising, by weight, 15-25 parts of sodium sulfite or carbohydrazide or dimethyl ketoxime or acetone oxime, 4-12 parts of trisodium phosphate or sodium tripolyphosphate in phosphate, 8-15 parts of ammonium hydroxide or monoethanolamine or sodium hydroxide or potassium hydroxide as a pH conditioning agent, 15-25 parts of 1H-benzotriazole or mercaptobenzothiazole or dicyclohexylaminenitrite as a passivator and 33-48 parts of cyclohexylamine carbonate or hexamethylenetetramine or tetrahydroglyoxaline as a corrosion inhibitor body. The application method of the anti-corrosion corrosion inhibitor comprises the step that anti-corrosion corrosion inhibitor powder is directly added into water of the heat supply network, wherein the using amount is 80-120 mg / L. By means of the corrosion inhibitor, stainless steel pitting corrosion and galvanic corrosion occurring in the heat supply network can be effectively prevented; effective protection is formed between a gaseous phase space and a liquid phase space at the same time; and environmental friendliness is achieved.

Description

technical field [0001] The invention belongs to the technical field of corrosion protection, and relates to a heat network anti-corrosion and corrosion inhibitor specially used for a heat supply pipe network and a preparation and use method. Background technique [0002] In recent years, due to the frequent leakage of the heating pipe network, the frequent occurrence of winter heating accidents has caused serious social impacts, which has attracted widespread attention from the society. Existing reports have shown that the heating pipe network is buried underground, and leakage caused by corrosion occurs frequently, especially in the early stage; once a leakage occurs, it is difficult to deal with and repair due to the impact of ground buildings, resulting in a longer heating interruption , causing serious social impact. At present, the treatment technologies commonly used in China include thermal deoxidation method and ammonia addition method. These methods have improved ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C23F11/08
CPCC23F11/08
Inventor 潭振州窦志刚王朋华李伟哲沈萍
Owner 沈阳防锈包装材料有限责任公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap