Environmentally friendly composite corrosion and scale inhibitor for circulating cooling water

A technology of corrosion and scale inhibitor, circulating cooling water, applied in descaling and water softening, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problems of low calcium tolerance and poor scale inhibition effect. , to achieve the effect of reducing the deposition rate, reducing the concentration of use, and being conducive to environmental protection

Inactive Publication Date: 2012-04-18
NANKAI UNIV
View PDF3 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In comparison, methylene phosphonates containing sulfonic acid groups have better calcium carbonate scale inhibition performance and higher calcium tolerance than methylene p

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
  • Environmentally friendly composite corrosion and scale inhibitor for circulating cooling water
  • Environmentally friendly composite corrosion and scale inhibitor for circulating cooling water
  • Environmentally friendly composite corrosion and scale inhibitor for circulating cooling water

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The present invention will be further described below through embodiment.

[0026] In the embodiments of the present invention, the test of corrosion inhibition performance refers to "National Standard GB / T18175-2000 of the People's Republic of China, Determination of Corrosion Inhibition Performance of Water Treatment Agents——Rotating Coupon Method", and the corrosion inhibition is carried out by using a rotary coupon corrosion instrument Performance experiment, temperature 45°C, speed 75r / min. The carbon steel test piece is No. 20 carbon steel, with a specification of 50mm×25mm×2mm; the scale inhibition performance experiment was carried out by the calcium carbonate deposition method using the "National Standard of the People's Republic of China" GB / T 16632-2008".

[0027] The water quality of the corrosion and scale inhibition experiment is shown in Table 1.

[0028] Table 1: Water quality of corrosion inhibition experiment

[0029]

[0030] Note: Total hardness...

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 an environmentally friendly composite corrosion and scale inhibitor for circulating cooling water, which comprises polyepoxysuccinic acid, poly aspartic acid, benzotriazole, sodium gluconate and sodium tungstate according to a mass ratio of (1- 2.5): (3 -5): (1-2): (10-25): (3-5). The composite corrosion and scale inhibitor provided by the invention has the characteristics of no phosphorus, biodegradability, and less dosage of medicament, can be suitable for high-salt-content and high-hardness water and the like, is an environmentally friendly water stabilizer which has good corrosion inhibition, scale inhibition dispersion performances for a circulating cooling water system.

Description

technical field [0001] The invention belongs to the technical field of circulating cooling water treatment, and in particular relates to an environment-friendly composite corrosion and scale inhibitor for circulating cooling water treatment. Background technique [0002] Circulating cooling water treatment technology plays a very important role in water saving, energy saving and consumption reduction, but at the same time, the use of circulating water treatment chemicals also has a certain impact on the environment. In the cooling water system, in various occasions where the water temperature is higher than the ambient temperature, the scaling of calcium carbonate and other inorganic salts will bring serious consequences. In recent years, in the field of water treatment, the application of alkaline water treatment technology that does not control the pH value is increasing. Among them, the addition of corrosion and scale inhibitors is a better scale inhibition method, which ...

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
Inventor 王建友吴家全陈维利
Owner NANKAI UNIV
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