Environment-friendly efficient boiler deoxidant

Abstract

The invention discloses an environment-friendly efficient boiler deoxidant which is prepared from the following raw materials in parts by weight: 20-25 parts of dimethyl ketoxime, 13-18 parts of diacetylmonoxime, 10-12 parts of acetaldoxime, 12-17 parts of carbazide, 6-10 parts of a dispersing agent, 5-10 parts of a pH regulator, 3-7 parts of a catalyst and 30-40 parts of purified water. And the used oxime raw materials such as dimethyl ketoxime, diacetylmonoxime and acetaldoxime have relatively strong reducibility, have the characteristics of low toxicity, high efficiency and high speed in the aspect of oxygen removal, and play a role in passivation protection on the surface of the boiler. And meanwhile, the stability is high, and a good oxygen removal function is achieved within a wide temperature and pressure range. The three substances are mixed with carbazide which also has a deoxidizing effect to enhance the deoxidizing capability, and meanwhile, the dispersing agent, the catalyst and the pH regulator are added to ensure smooth and safe reaction, reduce the generation of derivatives, improve the substance stability and accelerate the preparation rate.

Description

technical field [0001] The invention relates to the technical field of boiler water treatment, and more specifically relates to an environment-friendly and high-efficiency boiler oxygen scavenger. Background technique [0002] With the development of the economy, the number of steam boilers has also increased rapidly. In the use of the boiler, the indicators of feed water and boiler water cannot be effectively controlled, the operation mode of the boiler is unreasonable, the defect of its own structure, and the maintenance of the boiler cannot keep up with other reasons, which lead to serious oxygen corrosion of the stress-bearing parts of the heating surface in the boiler. Dissolved oxygen in feed water is usually the main cause of thermal equipment corrosion. Its sources mainly include boiler feed water or hot water returned by the heat pipe network, condensate leaking into the air during cycle operation, steam turbine or condenser or seal of condensate pump Not tight, et...

AI Technical Summary

Problems solved by technology

[0004] At present, hydrazine is commonly used as a chemical oxygen scavenger to assist thermal oxygen removal. However, it is flammable, explosive, volatile, and suspected of being a carcinogen, so there are many restrictions on its use.

When reacting with oxygen, it is greatly affected by temperature, pH and excess amount, and high temperature decomposition can easily cause copper ammonia corrosion