Introduction to the importance of heat exchanger cleaning
There are three main reasons for heat exchanger fouling: (1) Because most of the commonly used heat exchanger heat exchangers are heat exchange systems with water as the heat carrier, because some salts are precipitated from the water when the temperature rises and the concentration is high , Attached to the surface of the heat exchange tube to form scale. As the use time and frequency increase, the scale layer gradually becomes thicker and harder, and adheres tightly to the surface of the heat exchange tube; (2) Like scale, the heat exchanger On the other side of the fluid, due to the nature of the substance itself, non-scale solid precipitates may appear. If they are not treated for a long time, they will accumulate more and more on the surface of the heat exchange tube; (3) When the fluid contains more mechanical impurities and organic matter, the fluid When the flow rate is small, some mechanical impurities or organic matter will also deposit in the heat exchanger, forming loose, porous or colloidal dirt.
The hazards of fouling and not cleaning: (1) Fouling greatly reduces the heat exchange efficiency of the equipment, greatly increases energy consumption, and increases production costs; (2) Fouling worsens the heat transfer conditions of the heat exchange equipment, and the heat transfer surface is overheated. It can cause safety accidents such as blister, crack, pipe burst, etc.; (3) Scaling can cause corrosion damage under the scale, causing leakage of equipment perforation, shortening the service life of equipment, and scaling will make the production process unstable, affect product quality, and cause quality accidents.