中文(简体)Industry insiders know that sleeve heat exchangers will generate various types of dirt after a period of use, and there are many types of dirt. Simple scales can be removed through simple methods. For dirt that is insoluble in acids, bases, and solvents, mechanical cleaning methods can be used. This method is also commonly used to remove particulate dirt.
Mechanical cleaning method is a mechanism that causes greater adhesion of dirt than fluid flow or mechanical action, and it causes dirt to detach from the heat exchanger wall. The advantage of this method is that it can not only save the cost of reagents required for chemical cleaning, but also remove carbonized dirt and hard dirt that cannot be removed by chemical methods; Avoiding the discharge and treatment problems caused by cleaning waste liquid after chemical cleaning; Low steel loss; The cleaned equipment is not easily corroded. Its disadvantage is that the equipment must be disassembled; Long cleaning time and high cost; Some cleaning methods can only be performed after a system interruption.
According to the methods of mechanical cleaning, there are two types: one is the strong cleaning method, such as water jet cleaning, steam jet cleaning, sandblasting cleaning, high-pressure water jet cleaning, strong cleaning of pipelines, etc; Another type is soft mechanical cleaning, such as scraper, drill or wire brush descaling, and sponge rubber ball cleaning. Different types of dirt should be cleaned using different mechanical cleaning methods. Mechanical cleaning is a commonly used descaling method in industry, which can remove carbonized dirt and hard scale. However, when using mechanical cleaning, the heat exchange equipment often needs to be disassembled, which is time-consuming and costly.
