High-temperature corrosion and scale inhibitor for hot-water heat-supply network of winter heating and preparation method of high-temperature corrosion and scale inhibitor
A corrosion and scale inhibitor, hot water pipe technology, applied in chemical instruments and methods, descaling and water softening, water/sludge/sewage treatment, etc. The problems of poor solubility of azoles and high cost of raw materials can achieve the effect of improving tolerance, good effect and low cost.
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[0021] Example 1
[0022] A high temperature corrosion and scale inhibitor for heating and hot water pipe network in winter, the formula is: 2 parts of ethylenediaminetetraacetic acid, 0.6 part of polyaspartic acid, 1.2 part of diethyl sulfate, and 0.6 part of carboxymethyl chitosan , 0.2 part of polyvinylpyrrolidone, 0.2 part of sodium starch octenyl succinate, 0.1 part of 3-chloro-2-hydroxypropyltrimethylammonium chloride.
[0023] The preparation method is as follows:
[0024] (1) Add 0.6 parts of carboxymethyl chitosan to 3 parts of distilled water, after dissolving, add 3-chloro-2-hydroxypropyltrimethylammonium chloride, stir evenly, heat up to 80-85 °C and keep warm Stir for 40-50min, then cool to room temperature to obtain a premix;
[0025] (2) Add water in a mass ratio of 1:1 to the mixture of EDTA, polyaspartic acid, diethyl sulfate, polyvinylpyrrolidone, and sodium starch octenyl succinate, mix well, and then Add the premix and mix well.
Example Embodiment
[0026] Example 2
[0027] A high-temperature corrosion and scale inhibitor for heating and hot water pipe network in winter. , 0.3 part of polyvinylpyrrolidone, 0.1 part of sodium starch octenyl succinate, 0.1 part of 3-chloro-2-hydroxypropyltrimethylammonium chloride.
[0028] The preparation method is the same as in Example 1.
Example Embodiment
[0029] Example 3
[0030] A high temperature corrosion and scale inhibitor for heating and hot water pipe network in winter, the formula is: 3 parts of ethylenediaminetetraacetic acid, 0.8 part of polyaspartic acid, 0.8 part of diethyl sulfate, and 0.5 part of carboxymethyl chitosan , 0.4 part of polyvinylpyrrolidone, 0.3 part of sodium starch octenyl succinate, 0.1 part of 3-chloro-2-hydroxypropyltrimethylammonium chloride.
[0031] The preparation method is the same as in Example 1.
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