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Anti-corrosion performance of chiller heat exchange equipment

Release time: 2019-07-16 15:56:44

In the industrial field, low temperature screw chiller is widely used as circulating cooling equipment, but in industrial production, the circulating medium is different. Most of the medium is tap water, and some use various types of acid, alkali, seawater and For some complicated mixed media or some gases with various components, whenever a medium such as tap water is encountered, the choice of heat exchanger material will become very important. If the material selection of the heat exchanger cannot withstand the corrosion of the medium, Chillers will be scrapped in the worst case, and overhauls will even cause irreversible consequences. Today, I will introduce to you in detail how some common media select the corresponding material heat exchanger.


1. Acids:

Acids are usually used in electroplating, electrophoresis, electrolysis, reaction kettles, food and other industries. Commonly used acids are hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, etc., and some special mixed acid-liquid media. When choosing a chiller for heat exchange When it is used, please provide as much detailed component name and proportion as possible.

2. Alkali:

The most alkaline media are in the food, pharmaceutical, chemical, energy and other industries. The chiller unit is basically a low-temperature screw refrigeration unit as the main selection representative.
The following figure is a table of the PH acid concentration of common liquid media and the corrosion resistance of various metal materials. When selecting a chiller, you can make some general judgments and provide data according to the following table.



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