Organic stabilizer for water quality of high-pressure steam drum boiler and preparation method thereof

Abstract

The invention discloses an organic stabilizer for water quality of a high-pressure steam drum boiler and a preparation method thereof, comprising the following raw materials by weight: 0.5-8% of aminopropylcyclohexylamine, 1-8% of isododecyloxypropylamine, N ‑methyl‑3‑(methylamino) propionamide 0.5‑9%, tetrasodium iminodisuccinate 1‑10%, stearylamine polyoxyethylene ether 0.2‑9%, and the balance is deionized water; the The organic stabilizer for the water quality of the high-pressure drum boiler adopts a phosphorus-free formula, which can not only avoid corrosion and scaling on the tube wall, save energy, but also reduce the work intensity of operators.

Description

technical field [0001] The invention relates to an organic stabilizer for water quality of a high-pressure steam drum boiler and a preparation method thereof. Background technique [0002] At present, domestic high-pressure drum boilers are usually treated with trisodium phosphate. The mechanism of its use is that phosphate radicals can combine with metal ions in the water to form soft water slag, which is discharged out of the furnace with the continuous discharge and fixed discharge of the boiler. To maintain the qualified water and steam indicators, so as to ensure the stable operation of the high-pressure drum boiler. [0003] Phosphate treatment technology has been used for decades due to the low price of trisodium phosphate products. Along with its widespread use, it has some technical performance limitations and the following defects: [0004] 1) Large amount of sewage and serious waste of heat energy; [0005] 2) The use of trisodium phosphate to treat the boiler ...

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Problems solved by technology

[0004] 1) The amount of sewage is large, and the waste of heat energy is serious;

[0005] 2) Using trisodium phosphate to treat steam drum boiler water not only forms water slag, but also easily forms phosphate scale, which is accompanied by corrosion under the scale, and the pipe wall is easy to cause harm; at the same time, trisodium phosphate itself is an inorganic salt, which is the cause of the boiler water containing The main source of high salt content, and the high salt content of boiler water will cause the problem of steam entrainment. The sodium and silicon dioxide carried by the steam are deposited on the turbine blades, affecting output and safety hazards;

[0006] 3) Due to the physical and chemical characteristics of the product itself, the solubility of phosphate increases when the load is low; when the load is high, the solubility decreases and precipitates, and adheres to the pipe wall; it cannot effectively inhibit scales such as iron, copper oxide, and silicon dioxide; only for boilers The main body has a certain degree of anti-corrosion effect, and has no protective effect on the steam condensate system;

[0007] 4) When the amount of trisodium phosphate is insufficient, it is easy to cause acid corrosion of metals, and when the amount is too high, it is easy to cause alkali brittle corrosion; manual control has a long delay, resulting in frequent fluctuations in furnace water and steam indicators, and it is difficult to control stability; increase The work intensity of the operators, the requirements for the staff's sense of responsibility and technical level are relatively strict

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