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Environmental-friendly boiler deoxidizer

An oxygen scavenger, an environment-friendly technology, applied in the field of environment-friendly boiler oxygen scavenger, can solve problems such as temperature, pH and excess, flammable and explosive, copper ammonia corrosion, etc., and achieve low environmental requirements, Anti-corrosion damage, the effect of environmental protection and safety

Inactive Publication Date: 2019-08-23
安徽省力皖节能环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 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

Method used

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  • Environmental-friendly boiler deoxidizer

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Effect test

Embodiment 1

[0019] An environment-friendly boiler oxygen scavenger described in the present invention is made of the following raw materials in parts by weight: 20 parts of acetaldoxime, 9 parts of 1-aminopyrrolidine, 10.5 parts of carbohydrazide, 5 parts of diethylhydroxylamine, 16 parts of neutralizing amine, 1.6 parts of hydroquinone and 37.9 parts of desalinated water.

[0020] The preparation method of the above-mentioned environment-friendly boiler oxygen scavenger: add 37.9 parts of desalted water to the reactor, then add 20 parts of acetaldehyde oxime and 9 parts of 1-aminopyrrolidine to the reactor, stir for 25 minutes; Add 5 parts of diethylhydroxylamine and 16 parts of neutralizing amine in the reaction kettle, stir for 37 minutes; finally add 10.5 parts of carbohydrazide and 1.6 parts of hydroquinone to the reaction kettle, stir for 12 minutes, and let it stand for 10 minutes to obtain The environment-friendly boiler oxygen scavenger.

Embodiment 2

[0022] An environment-friendly boiler oxygen scavenger described in the present invention is made of the following raw materials in parts by weight: 20 parts of propionaldehyde oxime, 9 parts of 1-aminopyrrolidine, 10.5 parts of carbohydrazide, 5 parts of diethylhydroxylamine, 16 parts of neutralizing amine, 1.6 parts of hydroquinone and 37.9 parts of desalinated water.

[0023] The preparation method of the above-mentioned environment-friendly boiler oxygen scavenger: add 37.9 parts of desalted water to the reactor, then add 20 parts of propionaldehyde oxime and 9 parts of 1-aminopyrrolidine to the reactor, stir for 25 minutes; Add 5 parts of diethylhydroxylamine and 16 parts of neutralizing amine in the reaction kettle, stir for 37 minutes; finally add 10.5 parts of carbohydrazide and 1.6 parts of hydroquinone to the reaction kettle, stir for 12 minutes, and let it stand for 10 minutes to obtain The environment-friendly boiler oxygen scavenger.

Embodiment 3

[0025] A kind of environment-friendly boiler oxygen scavenger described in the present invention is made of the raw materials of following weight parts: 20 parts of propionaldehyde oxime, 9 parts of 1-aminopyrrolidine, 10.5 parts of glyoxalhydrazine, 5 parts of diethylhydroxylamine, 16 parts of neutralizing amine, 1.6 parts of hydroquinone and 37.9 parts of desalinated water.

[0026] The preparation method of the above-mentioned environment-friendly boiler oxygen scavenger: add 37.9 parts of desalted water to the reactor, then add 20 parts of propionaldehyde oxime and 9 parts of 1-aminopyrrolidine to the reactor, stir for 25 minutes; Add 5 parts of diethylhydroxylamine and 16 parts of neutralizing amine in the reaction kettle, stir for 37 minutes; finally add 10.5 parts of glyhydrazine and 1.6 parts of hydroquinone to the reaction kettle, stir for 12 minutes, and let it stand for 10 minutes to obtain The environment-friendly boiler oxygen scavenger.

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Abstract

The invention relates to the technical field of boiler water treatment and in particular discloses an environmental-friendly boiler deoxidizer. The environmental-friendly boiler deoxidizer is preparedfrom the following raw materials in parts by weight: 10-30 parts of oxime-containing compounds, 6-12 parts of amino heterocyclic compounds, 6-15 parts of hydrazide derivatives, 2-8 parts of hydroxylamine compounds, 12-20 parts of neutralizing amine, 0.2-3 parts of a catalyst and 15-70 parts of desalted water. The environmental-friendly boiler deoxidizer disclosed by the invention overcomes the defects in the prior art, has effects of passivating boiler pipes and equipment, and prevents corrosion damage of the boiler caused by accumulation of metal deposits. The product is nontoxic, harmless and emission-free, and is environmental-friendly and safe to use.

Description

technical field [0001] The invention relates to the technical field of boiler water treatment, in particular to an environment-friendly boiler oxygen scavenger. Background technique [0002] Dissolved oxygen in feed water is one of the main causes of thermal equipment corrosion. Oxygen corrosion can occur in thermal equipment during installation, operation and shutdown. This kind of corrosion will affect the service life of the equipment, and the corrosion products will be brought into the thermal system, which will accumulate salt and scale in the system, resulting in a decrease in thermal efficiency, deterioration of water vapor quality, and accidents such as pipe bursts may occur in severe cases. Therefore, deaeration of boiler feed water has always been a matter of great concern. [0003] 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 carcino...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/20C02F1/66C02F103/02
CPCC02F1/20C02F1/66C02F2103/02C02F2209/22
Inventor 姜因萍
Owner 安徽省力皖节能环保科技有限公司
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