Aminoacids composite restrainer and method of use thereof

A technology of amino acid and corrosion inhibitor, which is applied in the field of amino acid compound pickling corrosion inhibitor and corrosion inhibitor, can solve the problems of easy harm to human body, waste of funds, high toxicity, etc., and achieve low production cost, small dosage, Long lasting effect

Inactive Publication Date: 2009-02-04
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
View PDF0 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the currently commonly used corrosion inhibitors are highly toxic and can easily harm the human body, and they are used in large amounts and cost high, resulting in a waste of funds

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

[0011] The pickling solution is dilute hydrochloric acid, the concentration is 1M, the amount of pickling solution is 100L, add 0.5g methionine, 0.5g potassium iodide and 0.1g cetyltrimethylammonium bromide, and immerse the cleaned steel in the pickling solution at room temperature. 4 hours in the solution.

[0012] The highest corrosion inhibition efficiency obtained through experimental testing is 97%, showing that it is an efficient corrosion inhibitor.

Embodiment 2

[0014] The pickling solution is dilute hydrochloric acid, the concentration is 1M, the amount of pickling solution is 100L, add 0.5g cysteine, 0.5g potassium iodide and 0.1g cetyltrimethylammonium bromide, and immerse the cleaned steel at room temperature 4 hours in the pickling solution.

[0015] The highest corrosion inhibition efficiency obtained through experimental testing is 96%, which shows that it is an efficient corrosion inhibitor.

Embodiment 3

[0017] The pickling solution is dilute hydrochloric acid, the concentration is 0.8M, the amount of pickling solution is 100L, add 0.5g methionine, 0.5g potassium iodide and 0.1g cetyltrimethylammonium bromide, and immerse the cleaned steel in the 3h in the pickling solution.

[0018] The highest corrosion inhibition efficiency obtained through experimental testing is 95%, showing that it is an efficient corrosion inhibitor.

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 relates to amino acid composite acid cleaning inhibiter and an application method thereof. The inhibiter consists of amino acid, iodized salt and hexadecyl trimethyl ammonium bromide, and the mixing ratio of the three components is 1-5: 1-5: 1-5; the inhibiter is used for industrial acid cleaning together with acid pickling solution, and the application method is as follows: the acid pickling solution is dilute sulphuric acid or dilute hydrochloric acid with 0.1m to 2m of concentration, the weight content of the inhibiter in the acid pickling solution is 0.001g / l to 2.0g / l, the acid cleaning temperature is 20 DEG C to 60 DEG C, and the acid cleaning time is 0.5h to 6h. The invention is mixed inhibiter with amino acid as the main component; amino acid can be well dissolved in water, has no toxin and harm to the environment, is capable of biodegradation, has high restraining efficiency, strong continuity capability and is very potential green inhibiter; in addition, the inhibiter has high efficiency, has no toxin and harm, small dosage and quite low production cost, and opens up a novel field for the safety and high-efficiency utilization of inhibiter.

Description

technical field [0001] The invention relates to a corrosion inhibitor in the technical field of industrial cleaning, in particular to an amino acid compound pickling corrosion inhibitor and an application method thereof. Background technique [0002] Pickling corrosion inhibitors are widely used in metal acid leaching rust removal, process equipment pickling descaling and acidizing oil recovery and other processes. Commonly used acids for pickling include inorganic acids such as hydrochloric acid, sulfuric acid, phosphoric acid, and hydrofluoric acid, and organic acids such as citric acid and sulfamic acid. However, these acids have a corrosive effect on metal equipment, especially the corrosion of inorganic acids is more serious. In order to inhibit metal corrosion, reduce the amount of acid used, improve the effect of pickling and prolong the service life of equipment, corrosion inhibitors should be added during pickling. However, the currently commonly used corrosion in...

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): C23G1/06
Inventor 芮玉兰梁英华田会娟
Owner NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGY
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