Let's take a look at why the steam radiator is fouled. First, when the steam radiator is in operation, the environment in which the steam radiator is located is one of the causes of scale formation. For example, some steam radiators are installed in the workshop, and there are many dusts in the workshop. When the time is long, the scale is formed. Some steam radiators are installed in the water. Once the time is long, the suspended solids in the water will also scale. .
Look at the common types of scale,
1) Particulate soil: The accumulation of solid particles suspended in a fluid on the surface of a steam radiator. Such fouling also includes deposits of large solid particles formed by gravity on the horizontal heat transfer surface, so-called deposition of precipitated dirt and other colloidal particles.
2) Crystalline soil: A deposit formed by crystallization of an inorganic salt dissolved in a fluid on the surface of a steam radiator, usually occurring when supersaturated or cooled. Typical soils are calcium carbonate, calcium sulfate and silica fouling layers on the cooling water side.
3) Chemical reaction fouling: The dirt generated by chemical reaction on the heat transfer surface, the material of the heat transfer surface may not participate in the reaction, but it can be used as a catalyst for the chemical reaction.
4) Corrosion: Some dirt caused by corrosive fluids corroding the surface of the steam radiator. Generally, the degree of corrosion depends on the composition of the fluid, the temperature, and the pH of the fluid being treated.
5) Biofouling: In addition to seawater cooling devices, general biofouling refers to microbial fouling. It may produce slime, which in turn provides conditions for the propagation of biofouling, which can produce a layer of dirt of considerable thickness once the conditions are suitable for biofouling.
6) Solidified dirt: The dirt formed by the solidification of the fluid on the surface of the supercooled steam radiator.