Non-phosphorus scale inhibition dispersant and application thereof

Abstract

The invention relates to a non-phosphorus scale inhibition dispersant and the application thereof. The non-phosphorus scale inhibition dispersant is prepared by mixing the following raw materials by mass percent: 50-60% of sodium carbonate, 10-15% of polymaleic anhydride, 10-15% of acrylic acid / 2-acrylamide-2-methyl propylene sulfonic acid copolymer, 5-10% of natural organic macromolecule material, 2-5% of zinc salt, 1-2% of polyacrylamide and 10-20% of other components. The non-phosphorus scale inhibition dispersant and the application thereof have the beneficial effects that (1) the non-phosphorus scale inhibition dispersant has good environmental protection property; (2) the non-phosphorus scale inhibition dispersant is excellent in corrosion inhibition and scale inhibition, and good in environmental protection property; (3) the deposition of Ca3 (PO4) 2 filth of a circulating water system caused by phosphorous degradation can be avoided, so that the heat transfer coefficient of a cold exchange device is improved, and the energy consumption is reduced; (4) the non-phosphorus scale inhibition dispersant is high in tolerance to Ca and alkali, can resist the corrosion of high-concentration Cl<-> and SO4 <2-> and can adapt to high potential of hydrogen (pH), thus providing a technical condition for enabling circulating water to run under the condition of high concentration multiples and reducing sewage discharge.

Description

technical field [0001] The invention relates to a phosphorus-free scale inhibitor dispersant and its application in circulating cooling water. Background technique [0002] my country is one of the countries in the world where water resources are scarce. According to reports, more than 400 of my country's 669 cities are facing insufficient water supply. With the rapid development of the economy and the growth of the population, the problems of water shortage and deterioration of water quality are becoming more and more prominent. Therefore, it is very important to save water, do a good job in water treatment, and improve the reuse rate of industrial water. On the one hand, our country is short of water resources, but on the other hand, it is wasting a lot of precious water resources. my country's urban industrial water reuse rate is only 60% on average, and developed countries generally exceed 80%. The average water intake per 10,000 yuan of industrial production value is ...

AI Technical Summary

Problems solved by technology

[0005] Secondly, when the concentration ratio is 2-3, there will be more drainage and a greater waste of water resources

[0006] Since the 1990s, non-phosphorous green phosphorus-free scale inhibitors polyaspartic acid (PASP) and polyepoxysuccinic acid (PESA) with biodegradable properties have been developed both at home and abroad, although they have certain scale inhibition properties. and corrosion inhibition performance, but most of them are still used in combination with phosphorus-based scale inhibitors and dispersants. There are very few successful applications that can control the concentration ratio above 4.0, and the waste of water resources is still serious.

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