Unlock instant, AI-driven research and patent intelligence for your innovation.

Composite scale and corrosion inhibitor and preparation method for same

A scale and corrosion inhibitor, polycarboxylic acid technology, applied in chemical instruments and methods, scale removal and water softening, water/sludge/sewage treatment, etc., can solve the problem of reducing the working efficiency of heat exchangers and reducing heat transfer coefficients Small and other problems, to achieve the effect of simple production, water saving and convenient use

Inactive Publication Date: 2013-05-22
江苏昊隆换热器有限公司
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The dirt in the cooling water rarely exists in the form of a single substance, and is often deposited together with scale, suspended solids, corrosion products and biological slime. The formation of dirt on the metal surface will cause the thermal resistance of the dirt and make the heat transfer coefficient Sharply reduced, greatly reducing the efficiency of the heat exchanger

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

[0024] Add 25kg of deionized water, 3kg of alkylsulfonic acid, and 33kg of polyacrylic acid to the reaction kettle in turn, stir to dissolve, heat up to 90°C, then add 25kg of polycarboxylic acid, 12kg of sodium molybdate, and 2kg of zinc sulfate, and stir for 3 hours to obtain a compound Scale and corrosion inhibitors.

Embodiment 2

[0026] Add 25kg of deionized water, 1.5kg of alkylsulfonic acid, and 35kg of polyacrylic acid to the reaction kettle and stir to dissolve, heat up to 90°C, then add 22kg of polycarboxylic acid, 15kg of sodium molybdate, and 1.5kg of zinc sulfate, and stir for 3 hours to obtain Composite scale and corrosion inhibitor.

Embodiment 3

[0028] Add 24.5kg of deionized water, 4.5kg of alkylsulfonic acid, and 30kg of polyacrylic acid to the reaction kettle and stir to dissolve, heat up to 90°C, then add 28kg of polycarboxylic acid, 10kg of sodium molybdate, and 3kg of zinc sulfate, and stir for 3 hours to obtain Composite scale and 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 discloses a composite scale and corrosion inhibitor and a preparation method for the same, and relates to the technical field of water treatment. The composite scale and corrosion inhibitor disclosed by the invention comprises the constituent materials in the following percentage by mass: 22-28% of polycarboxylic acid, 30-35% of polyacrylic acid, 10-15% of sodium molybdate, 1-5% of alkyl sulfonic acid, 1.5-3% of zinc sulphate and the balance of deionized water. The composite scale and corrosion inhibitor disclosed by the invention can be directly added in a water treatment system, and has the functions of scale inhibition, scale removal, corrosion inhibition, high-concentration multiplying power, and the like; simultaneously, on the basis of no scale formation and no corrosion, the concentration ratio of circulating water is increased, and water is saved; and the composite scale and corrosion inhibitor is simple to produce, convenient to use, and low in cost.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a composite scale and corrosion inhibitor. Background technique [0002] Industrial cooling water accounts for a large proportion of industrial water, usually 60-90% of industrial water, if not treated, it will cause corrosion, scaling and microbial slime and other obstacles to equipment and pipelines. Carbon steel, stainless steel, copper and copper alloys mainly undergo electrochemical corrosion caused by dissolved oxygen in circulating cooling water. In addition, due to differences in water quality and special operating conditions, the surface conditions of the passing metal are different, except for dissolved oxygen. In addition to the general corrosion caused by corrosion, there are also pitting corrosion, crevice corrosion, under-deposit corrosion, abrasion, and galvanic corrosion. The purpose of using corrosion inhibitors is, one is to use the yin and yang charact...

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): C02F5/10
Inventor 孙德生丁建
Owner 江苏昊隆换热器有限公司