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Preparation and application of multi-phosphonic acid type scale inhibitor and dispersant

 Last Update: 2021-11-13
 Source: Internet
 Author: User

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Preparation and application of multi-phosphonic acid type scale inhibitor and dispersant

Organic polyphosphonic acid is a new product developed abroad in the late 1960s, and it has been widely used in circulating cooling water in the 1970s
.

In the water treatment application process, compared with inorganic polyphosphate, organic phosphoric acid has good chemical stability, is not easy to be hydrolyzed, can withstand higher temperatures, has a small amount of medicament, and has excellent scale inhibition performance

Organic phosphonic acid scale inhibitors and dispersants are generally divided into two categories: organic phosphonates and organic phosphonates
.

In the organic phosphonic acid compound, the phosphorus atom is directly connected to the carbon atom; in the organic phosphonate, the phosphorus atom is directly connected to the carbon atom through the oxygen atom

Organic phosphoric acid is a kind of cathodic corrosion inhibitor, which has obvious solubility limit effect and synergistic effect
.

They have excellent chelating ability to many metal ions (such as calcium, magnesium, iron, zinc, etc.
), and even have a good deactivation effect on inorganic salts of these metals such as calcium sulfate , calcium carbonate , magnesium silicate, etc.

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