CN102701471A

CN102701471A - High-harness water corrosion and scale inhibitor

Info

Publication number: CN102701471A
Application number: CN2012101967978A
Authority: CN
Inventors: 程终发; 侯敬恒; 孙群峰; 王燕平; 贺茂才; 齐晓婧
Original assignee: Shandong Taihe Water Treatment Co Ltd
Current assignee: Shandong Taihe Water Treatment Co Ltd
Priority date: 2012-06-15
Filing date: 2012-06-15
Publication date: 2012-10-03

Abstract

The invention relates to a high-harness water corrosion and scale inhibitor, which comprises the following components by mass percent: 10-20 percent of amino trimethylene phosphonic acid, 20-30 percent of hydroxyethylidenediphosphonic acid, 20-30 percent of 2-phosphonobutane-1, 2, 4-tricarboxylic acid, 20-50 percent of terpolymer and 0-30 percent of reverse osmosis water. The high-harness water corrosion and scale inhibitor provided by the invention can realize the goal that calcium hardness and alkalinity in circulating water reach high concentration ratio of 1500mg/L.

Description

A kind of high hardness corrosion inhibiting and descaling agent

Technical field

The invention belongs to the industrial circulating cooling water processing technology field, be specifically related to a kind of high hardness corrosion inhibiting and descaling agent.

Background technology

Water loss is high, and repeating utilization factor is low, is the big drawback that industrial system is utilized water resources, and especially for the such country of water resources shortage per capita of China, the in short supply of water resources will seriously restrict expanding economy.As everyone knows, through in cooling water system, adding anti-incrustation corrosion inhibitor, the fouling corrosion problem of control water system reaches the recycle of recirculated water, and is one of main method of industrial circle water saving through the cycles of concentration that improves recirculated water.In the operational management of industrial cycle water system, cycles of concentration is an important technology index judging cooling water circulation utilization ratio, realizes that the high concentration multiple operation is the developing direction that recirculated cooling water is handled.At present, the water treatment agent that adopts both at home and abroad is organic phosphine series medicament mostly.Generally speaking, this series medicament can make the cycles of concentration of recirculated water improve between the 2-3, and is higher only 4, causes a large amount of wastes of water resources.In recent years, along with the exploitation of high-performance Water Treatment Chemicals, the exploitation of high concentration multiple treatment of cooling water technology has become the focus of enterprises pay attention.Short situation in view of China's water resources; Many mainstay industries, industry and enterprise have all urgently proposed the requirement of increasing income and decreasing expenditure to water resources; Therefore, complete set technology is handled in the operation of research and development industrial circulating water high concentration multiple, through setting up demonstration project; In industrial circle, implement to promote, will the favourable situation of alleviating China's water supply gets.Existing scale inhibition agent ubiquity can not reach the national standard requirement of corrosion of carbon steel rate to the problem that it is poor that the corrosion mitigating effect of carbon steel is made a mistake.

CN101125715A discloses solid and liquid slow-release agent, liquid portion organic phospho acid 5%, organic carboxyl acid 20%, water 55%; Solid part polymkeric substance 20%, alkaline agent 71%, azole 3%, zinc salt 6%.CN101417838B discloses a kind of anti-incrustation corrosion inhibitor, PBTCA15%, and HEDP8%, Zinc Sulphate Heptahydrate 12%, BTA1.5%, Sodium hexametaphosphate 99 3%, the vitriol oil 2%, AA/AMPS30%, all the other are water.

The present invention seeks to solve recirculated water fouling difficult problem under the hard high-alkali state of height; These article mainly by multiple organic phosphine carboxylic acid, poly carboxylic acid, contain co-polymer of sulfonate, inhibiter, particular interface promoting agent etc. and form, be applicable to that calcium hardness and basicity in the recirculated water require to reach the recirculating cooling water system of the high concentration ratio of 1500 mg/L.

Summary of the invention

The present invention provides a kind of high hardness corrosion inhibiting and descaling agent, comprises ATMP, HEDP, 2-phosphonic acids butane-1,2,4-tricarboxylic acid, terpolymer, reverse osmosis water.Wherein, the weight percent of each component is following:

ATMP: 10%～20%;

Hydroxy ethylene diphosphonic acid: 20%～30%;

2-phosphonic acids butane-1,2,4-tricarboxylic acid: 20%～30%;

Terpolymer: 20%～50%;

Reverse osmosis water: 0%～30%.

Above-mentioned ATMP, the active constituent of hydroxy ethylene diphosphonic acid are 60%, and terpolymer is meant by vinylformic acid-propenoate-sulphonate copolymerization and forms, solid content 30%; 2-phosphonic acids butane-1,2, the tricarboxylic active ingredient of 4-is 50%.

The physical index of a kind of high hardness corrosion inhibiting and descaling agent of the present invention is following:

Outward appearance: yellowish transparent liquid;

Density: (20 ℃)>=1.20 g/cm ³

Solids content: >=45. 0%;

PH (1% aqueous solution): 2.0 ± 1.0.

Compared with prior art, positively effect of the present invention is: adopt high hardness corrosion inhibiting and descaling agent of the present invention, can realize that calcium hardness and basicity in the recirculated cooling water require to reach the high concentration ratio of 1500 mg/L.

Embodiment

Embodiment of the present invention below is provided.

Embodiment 1

A kind of high hardness corrosion inhibiting and descaling agent forms by following mass percent configuration:

ATMP: 20%;

Hydroxy ethylene diphosphonic acid: 25%;

2-phosphonic acids butane-1,2,4-tricarboxylic acid: 25%;

Terpolymer: 20%;

Reverse osmosis water: 10%.

Embodiment 2 (most preferred embodiment)

ATMP: 16%;

Hydroxy ethylene diphosphonic acid: 25%;

2-phosphonic acids butane-1,2,4-tricarboxylic acid: 25%;

Terpolymer: 34%.

Embodiment 3

ATMP: 18%;

Hydroxy ethylene diphosphonic acid: 23%;

2-phosphonic acids butane-1,2,4-tricarboxylic acid: 23%;

Terpolymer: 36%.

The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the present invention's design; Can also make some improvement and retouching, these improvement and retouching also should be regarded as in protection scope of the present invention.

Claims

1. high hardness corrosion inhibiting and descaling agent is characterized in that: it is by ATMP, HEDP, 2-phosphonic acids butane-1,2, and 4-tricarboxylic acid, terpolymer are formed, and each constituent mass per-cent is:

ATMP 10 ~ 20%;

Hydroxy ethylene diphosphonic acid 20 ~ 30%;

2-phosphonic acids butane-1,2,4-tricarboxylic acid 20 ~ 30%;

Terpolymer 20 ~ 50%;

Reverse osmosis water 0 ~ 30%.

2. according to claims 1 described a kind of high hardness corrosion inhibiting and descaling agent; It is characterized in that: the active constituent of ATMP, hydroxy ethylene diphosphonic acid is 60%; Terpolymer is meant by vinylformic acid-propenoate-sulphonate copolymerization and forms, solid content 30%; 2-phosphonic acids butane-1,2, the tricarboxylic active ingredient of 4-is 50%.

3. according to claims 2 described a kind of high hardness corrosion inhibiting and descaling agents, it is characterized in that: its each constituent mass per-cent is:

ATMP: 16%;

Hydroxy ethylene diphosphonic acid: 25%;

2-phosphonic acids butane-1,2,4-tricarboxylic acid: 25%;

Vinylformic acid-propenoate-sulphonate terpolymer: 34%.