What is the classification of common boiler water?

Raw water: refers to water that has not been disinfected and filtered, such as river water, stream water, well water, reservoir water, etc.

Feed water: refers to the chemical water delivered from deaerator to boiler by feed pump.

Make-up water: Make-up water for boiler is to make up the lost part or externally supplied part after completing a steam-water cycle, so that the boiler can always operate at a safe water level.

Recycling condensing water: When the heat energy of steam or hot water is utilized, the condensed water or low-temperature water should be recycled as much as possible, which is called recycling condensing water.

Demineralized water: Demineralized water is generally treated and does not contain soluble calcium and magnesium compounds.

Boiler water: boiler evaporates water in heating surface (once-through boiler) or circulating loop (drum boiler).

Sewage: Boiler sewage refers to the water containing water slag or high concentration of salt discharged from the boiler.