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A kind of high-efficiency corrosion and scale inhibitor and preparation method thereof

A corrosion and scale inhibitor, high-efficiency technology, applied in chemical instruments and methods, descaling and water softening, complex/solubilizer treatment, etc. The process is simple and the effect of optimizing the preparation process

Active Publication Date: 2017-05-10
CHANGSHU WATER TREATMENT AUX FACTORY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these corrosion and scale inhibitors, organic phosphates have become the preferred species because of their dual effects of corrosion and scale inhibition. However, the existing organic phosphates are only suitable for water with a pH value between 6-9. too narrow

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of organophosphorus: pour 380 parts of ammonium persulfate into 50 parts of distilled water, and stir until all ammonium persulfate is dissolved to obtain an ammonium persulfate solution for use;

[0016] Open the distilled water high tank valve, put 160 parts of distilled water into the reactor, turn on the reactor to stir, and pass in the jacket steam to raise the temperature of the reactor materials to 70±2℃; then add 380 parts of maleic Add acid anhydride and 480 parts of sodium hypophosphite to the reaction kettle, stir until the maleic anhydride is completely dissolved; the reaction kettle is heated to 95±2℃, open the ammonium persulfate solution flowmeter valve, and add the ammonium persulfate solution to the reaction The reaction is carried out in the kettle. The temperature of the whole reaction is controlled at 90-95℃, the flow rate of the ammonium persulfate solution is controlled at 45±5L / h, and the feeding time of the ammonium persulfate solution is...

Embodiment 2

[0020] Preparation of organophosphorus: pour 400 parts of ammonium persulfate into 55 parts of distilled water, and stir until all ammonium persulfate is dissolved to obtain an ammonium persulfate solution for use;

[0021] Open the distilled water high tank valve, put 170 parts of distilled water into the reactor, turn on the reactor to stir, and pass in the jacket steam to raise the temperature of the reactor material to 70±2℃; then add 400 parts of maleic Add acid anhydride and 490 parts of sodium hypophosphite to the reaction kettle and stir until the maleic anhydride is completely dissolved; the reaction kettle is heated to 95±2℃, open the ammonium persulfate solution flowmeter valve, and add the ammonium persulfate solution to the reaction The reaction is carried out in the kettle. The temperature of the whole reaction is controlled at 90-95℃, the flow rate of the ammonium persulfate solution is controlled at 45±5L / h, and the feeding time of the ammonium persulfate solution ...

Embodiment 3

[0025] Preparation of organophosphorus: Pour 420 parts of ammonium persulfate into 60 parts of distilled water, and stir until all ammonium persulfate is dissolved to obtain an ammonium persulfate solution for use;

[0026] Open the distilled water high tank valve, put 180 parts of distilled water into the reactor, turn on the reactor to stir, and pass in the jacket steam to raise the temperature of the reactor material to 70±2℃; then add 420 parts of maleic Add acid anhydride and 500 parts of sodium hypophosphite into the reaction kettle and stir until the maleic anhydride is completely dissolved; the reaction kettle is heated to 95±2℃, open the ammonium persulfate solution flowmeter valve, and add the ammonium persulfate solution to the reaction The reaction is carried out in the kettle. The temperature of the whole reaction is controlled at 90-95℃, the flow rate of the ammonium persulfate solution is controlled at 45±5L / h, and the feeding time of the ammonium persulfate solutio...

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PUM

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Abstract

The invention discloses a high-efficiency corrosion and scale inhibitor. The high-efficiency corrosion and scale inhibitor comprises the following components by mass: 22 to 26% of polyol phosphate, 28 to 32% of organophosphorus, 20 to 24% of copolymer and 21 to 25% of zinc chloride. The pH value application scope of the high-efficiency corrosion and scale inhibitor is 3 to 12. Raw materials used for preparation of the organophosphorus comprise 250 to 300 parts of distilled water, 380 to 420 parts of maleic anhydride, 480 to 500 parts of sodium hypophosphate, 380 to 420 parts of ammonium persulfate and 80 to 100 parts of an additive. The preparation method for the high-efficiency corrosion and scale inhibitor comprises the following steps: preparation of the organophosphorus; and preparation of the corrosion and scale inhibitor. Thus, the high-efficiency corrosion and scale inhibitor has the characteristics of resistance to high hardness and a wide pH value application scope; and the preparation method is simple and has low production cost.

Description

Technical field [0001] The invention relates to the field of water treatment, in particular to an efficient corrosion and scale inhibitor and a preparation method thereof. Background technique [0002] Boiler is an indispensable thermal equipment for iron and steel enterprises. In order to ensure the long-term, safe and economic operation of the boiler, in addition to correct boiler operation and maintenance, the quality of boiler water and water treatment methods are particularly important. If the boiler water quality is controlled or treated poorly After a period of operation, a layer of solid attachment will appear on the heated surface in contact with water. This attachment is due to the fact that the unqualified water is heated, evaporated, and concentrated in the boiler. After a series of physical and chemical changes, some of the insoluble salts will be on the heating surface when the content exceeds the solubility product. In most cases, the deposits and the heating surf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F5/14C02F5/08
Inventor 陈建新殷建昌
Owner CHANGSHU WATER TREATMENT AUX FACTORY CO LTD
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