How to solve the fouling of plate heat exchanger

Source: 　 Time: 2020-07-14 14:32:53　Hit:

The plate heat exchanger has the characteristics of high heat exchange efficiency, small heat loss, compact and lightweight structure, and is easy to use. However, some difficult problems will be encountered during use, such as easy scaling, which brings some troubles to the use, so what is the cause of this problem and how to solve it?

In many cases, the plate heat exchanger is prone to fouling, which will seriously affect the heat exchange efficiency of the plate heat exchanger, because the plate heat exchanger is mostly a heat exchange system using water as a heat carrier, due to certain salts When the temperature rises, it crystallizes out from the water and attaches to the surface of the heat exchange tube to form scale.

Adding polyphosphate-based buffers to the cooling water can also cause scale precipitation when the pH of the water is high. The scale initially formed is relatively soft, but with the formation of the scale layer, the heat transfer conditions deteriorate, the crystal water in the scale gradually loses, the scale layer becomes hard, and is firmly attached to the surface of the heat exchange tube.

In addition, like scale, when the working conditions of the heat exchanger are suitable for the precipitation of crystals from the solution, the scale layer formed by the crystallization of the material can accumulate on the surface of the heat exchange tube; when the fluid contains many mechanical impurities, the fluid When the flow rate is small, some mechanical impurities or organic matter will also be deposited in the heat exchanger, forming loose, porous or colloidal dirt.

Therefore, in order to avoid problems such as scaling during normal use, it is necessary to regularly maintain the plate heat exchanger, including the cleaning of equipment, to avoid impurities and other causes of scaling, affecting the normal work.

YOJO was established in China in 2015. It is a company specializing in the production of heat exchangers, such as Brazed plate heat exchanger brand, Gasketed heat exchanger design, coaxial heat exchanger, etc. In addition to these products, the company can also accept Heat exchanger OEM orders, and can also design products according to customer requirements.

Tag: Brazed plate heat exchanger brand, Heat exchanger OEM, Gasketed heat exchanger design

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