Pay attention to the corrosiveness of chloride ions when choosing a plate heat exchanger
The heat exchanger plates of the plate heat exchanger are generally made of stainless steel, which has relatively strong corrosion resistance and chlorination. However, chloride ions can corrode the heat exchanger plates. In some areas, chloride ions corrode The corrosion of the heat exchanger plates of the plate heat exchanger by chloride ions has occurred in the past. Therefore, designers should pay attention to the selection of plate heat exchangers. Certain measures must be adopted. The corrosive concentration of the heat exchanger has not yet reached a certain level. It is generally believed that when the chloride ion reaches 200p.pm, it is not suitable to use general stainless steel heat exchanger plates.
There are two ways to solve the problem of chloride ion corrosion of heat exchanger plates. The first is to reduce the chloride ion concentration in the primary network and the secondary network medium, so that it is within the normal range, and the entire heat exchange can be achieved. The plate of the device plays a protective role, but the investment is large and troublesome. The second method is to adopt a stainless steel conversion film plate heat exchanger, and its investment is 10% higher than that of the ordinary plate. In contrast, the second method Cheaper.
