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

Phosphorus-free corrosion and scale inhibitor as well as preparation method and application thereof

A technology of phosphorus-free corrosion and scale inhibitors, applied in scale removal and water softening, chemical instruments and methods, water/sludge/sewage treatment, etc., can solve the problem that application conditions cannot be covered and affect the non-phosphating process of cooling water , It cannot deal with the problems of various sources of replenishment water quality, long-term fluctuations of water quality leaked by complex water quality processes, etc., to achieve uniform and dense protective film, improve corrosion inhibition effect, and reduce surface defects

Pending Publication Date: 2022-04-01
GUIZHOU EDUCATION UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the non-phosphorous corrosion and scale inhibition technology disclosed in the prior art can only achieve better treatment effects in certain specific water qualities, and its application conditions cannot cover a wide range of water quality (for example, it can be used in low, medium, high -hardness, alkalinity, chloride ions, conductivity), and cannot cope with the diverse sources of replenishment water quality, complex water quality, process leakage, and long-term fluctuations in water quality, which brings challenges to the comprehensive non-phosphating treatment of cooling water and affects the quality of cooling water. No phosphating process

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Phosphorus-free corrosion and scale inhibitor as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0063] The present invention provides a preparation method of the non-phosphorus corrosion and scale inhibitor described in the above technical scheme, comprising the following steps:

[0064] The dispersant, the scale inhibitor and the non-phosphorus corrosion inhibitor are mixed to obtain the non-phosphorus corrosion and scale inhibitor.

[0065]The present invention has no special limitation on the mixing process of the dispersant, scale inhibitor and phosphorus-free corrosion inhibitor, and the materials can be uniformly mixed according to the well-known process in the art.

[0066] In the present invention, when the non-phosphorous corrosion and scale inhibitor also includes a fluorescent tracer, the mixing process also includes adding a fluorescent tracer; when the non-phosphorous corrosion and scale inhibitor also includes a bactericidal When the agent is used, the mixing process also includes adding a bactericide; when the non-phosphorus corrosion and scale inhibitor a...

Embodiment 1

[0099] A non-phosphorus corrosion and scale inhibitor, comprising dispersant, scale inhibitor and non-phosphorus corrosion inhibitor; the dispersant is polyacrylic acid, the scale inhibitor is polyepoxy succinic acid, and the non-phosphorus corrosion inhibitor is zinc chloride, Cerium chloride and tolyltriazole;

[0100] Among them, the mass ratio of the total effective active substances in the dispersant and scale inhibitor to the effective active substances in the phosphorus-free corrosion inhibitor is 1:10; the mass ratio of the effective active substances in the dispersant to the effective active substances in the scale inhibitor is 1 : 1; the mass ratio of effective active matter in zinc chloride and effective active matter in cerium chloride is 1:0.25; the mass ratio of zinc chloride and cerium chloride total effective active matter and tolyl benzotriazole is 1 :0.333.

Embodiment 2

[0102] A non-phosphorus corrosion and scale inhibitor, comprising dispersant, scale inhibitor, non-phosphorus corrosion inhibitor, bactericide and solid acid; dispersant is acrylic acid-2-acrylamide-2 methylpropanesulfonic acid copolymer AA / AMPS, scale inhibitor is polymaleic acid, phosphorus-free corrosion inhibitor is zinc chloride and cerium chloride, fungicide is 5-chloro-2methyl-4-isothiazoline-3 ketone), solid acid is citric acid .

[0103] Among them, the mass ratio of the total effective active substances of dispersants, scale inhibitors and phosphorus-free corrosion inhibitors to the effective active substances in fungicides is 1:0015; the total effective activity of dispersants, scale inhibitors and phosphorus-free corrosion inhibitors The mass ratio of the active substance to the solid acid is 1:0.59; the mass ratio of the total effective active substance in the dispersant and scale inhibitor to the effective active substance in the phosphorus-free corrosion inhibi...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Scale inhibition rateaaaaaaaaaa
Login to View More

Abstract

The invention provides a non-phosphorus corrosion and scale inhibitor as well as a preparation method and application thereof, and belongs to the technical field of industrial water treatment. By limiting the special proportion of the dispersing agent, the scale inhibitor and the water-soluble zinc salt, the surface defects of a protective film formed on the metal surface can be reduced, and the protective film is more uniform and compact and can be kept stable in a wider water quality range; therefore, the phosphorus-free corrosion and scale inhibitor can be used in a wide water quality range, and even can be used in cooling water with water wave fluctuation and process leakage.

Description

technical field [0001] The invention relates to the technical field of industrial water treatment, in particular to a phosphorus-free corrosion and scale inhibitor and its preparation method and application. Background technique [0002] The operation of the circulating cooling water system must solve the three major problems of corrosion, scaling and deposition, and microorganisms. At present, chemical treatment is an important means to solve these three major problems. During the operation of cooling water, various chemicals such as corrosion inhibitors, scale inhibitors, fungicides, etc. are continuously added to the system to prevent corrosion, scaling and deposition and The occurrence of microbial problems ensures the stable and efficient operation of the cooling water system. Most of the chemicals currently used are phosphorus-containing chemicals, and phosphorus will lead to eutrophication of water bodies. The comprehensive non-phosphate treatment of cooling water is...

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): C02F5/10C02F5/12
CPCC02F5/125C02F2103/023C02F2303/08C02F2303/14C02F2303/22
Inventor 杨恒修邓明森何雪沈虎峻邹雪锋李付绍武青青陈令
Owner GUIZHOU EDUCATION UNIV
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