Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Environment friendly gas phase corrosion inhibitor used for direct air cooling system

A gas-phase corrosion inhibitor and air cooling system technology, which is applied in the field of environment-friendly gas-phase corrosion inhibitor, can solve the problems such as the harm to the human body of the corrosion inhibitor and the difficulty of popularization for users, and achieve the effects of corrosion prevention, long-lasting efficacy and high corrosion inhibition efficiency.

Inactive Publication Date: 2010-08-11
SHAANXI ELECTRIC POWER RES INST
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned corrosion inhibitors are difficult to popularize due to strong harm to the human body and are strongly resisted by users.

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

[0017] Take 40 parts of hexamethylenetetramine, 20 parts of ammonium carbonate, 20 parts of sodium benzoate, and 20 parts of sodium D-isoascorbate, and mix them uniformly under dry conditions to form a gas phase corrosion inhibitor. The carbon steel test piece was placed in 10% sodium chloride vapor at 60°C for 209 hours, and the corrosion inhibition efficiency reached 93.97%.

Embodiment 2

[0019] Take 20 parts each of hexamethylenetetramine and thiourea; 15 parts each of diammonium hydrogen phosphate and ammonium carbonate, 10 parts of sodium benzoate, and 20 parts of sodium D-isoascorbate, and mix them uniformly under dry conditions to form a gas phase corrosion inhibitor. agent. The carbon steel test piece was placed in 10% sodium chloride vapor at 60°C for 209 hours, and the corrosion inhibition efficiency reached 90.71%.

[0020] Example 2:

[0021] Take 20 parts of hexamethylenetetramine, thiourea and carbonamide; 10 parts of ammonium carbonate, 10 parts of sodium benzoate, and 20 parts of D-sodium erythorbate, and mix them uniformly under dry conditions to form a gas phase corrosion inhibitor . The carbon steel test piece was placed in 10% sodium chloride vapor at 60°C for 209 hours, and the corrosion inhibition efficiency reached 97.07%.

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

No PUM Login to View More

Abstract

The invention discloses an environment friendly gas phase corrosion inhibitor used for a direct air cooling system, which consists of the following materials in percentage by weight: 30-40% of organic amine, 20-30% of inorganic ammonium, 20-30% of sodium benzoate and 10-20% of sodium D-isoascorbate, wherein the organic amine is hexamethylentertr-amine, thiourea or carbamide, and the inorganic ammonium is diammonium phosphate, ammonium bicarbonate or ammonium carbonate. The sodium benzoate is commonly used for food preservatives; the diammonium phosphate is used for medicine, feed additives and the like; and the sodium D-isoascorbate is a novel food anti-oxygen and antiseptic fresh-keeping auxochromic agent; and the other components have very low toxicity or have no toxicity. The corrosion inhibitor has no harm on the environment and human body, has the advantages of convenient manufacturing and use, environment protection, high corrosion inhibition efficiency, long-lasting efficacy and the like, and can effectively prevent the direct air cooling system from being corroded.

Description

technical field [0001] The invention belongs to the production technical field of anticorrosion preparations, and relates to an environment-friendly gas phase corrosion inhibitor used to prevent direct air cooling systems of thermal power plants. Background technique [0002] Coal resources are abundant in northern my country, but water resources are relatively scarce, which is suitable for the promotion and application of direct air-cooled thermal power generating units. Practice has shown that after the direct air cooling system is out of service, the internal water vapor will severely corrode the steel material on the inner surface of the air cooling tower. After the unit is started, before and after hot flushing and flushing, the condensed water turns red and yellow, and the iron ion content can reach up to about 600-800ug / L, resulting in prolonged flushing time and greater loss of fuel and desalted water. [0003] Vapor phase inhibitor (Vapor phase inhibitor, VCI), als...

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
IPC IPC(8): C23F11/02
Inventor 闫爱军姜丹丁德
Owner SHAANXI ELECTRIC POWER RES INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com