The circular evaporator is equipped with discs at both ends or in the middle of the rotating shaft, and the entire disc is installed in a closed semicircular groove. There are many short pipes installed perpendicular to the disc between the discs. When the disk rotates, the black liquid adheres to the short tube. When the black liquid level is turned out, it comes into contact with the incoming high-temperature flue gas. The black liquid absorbs heat and evaporates the water, achieving the purpose of concentration. At the same time, alkali dust is also adhered by the black liquid and plays a dust removal role.

The circular evaporator is equipped with discs at both ends or in the middle of the rotating shaft, and the entire disc is installed in a closed semicircular groove. There are many short pipes installed perpendicular to the disc between the discs. When the disk rotates, the black liquid adheres to the short tube. When the black liquid level is turned out, it comes into contact with the incoming high-temperature flue gas. The black liquid absorbs heat and evaporates the water, achieving the purpose of concentration. At the same time, alkali dust is also adhered by the black liquid and plays a dust removal role.