The function of vacuum belt filter in the flue gas desulphurization is to filter the gypsum generated in the absorbing column, and to ensure the content of free water of filter cake is lower than 10% .

Vacuum belt filter is the most complicated one among sweeteners. It mainly consists of the following parts: filtering cloth, belt, frame, rectify a deviation rectifying unit, serum sparger, vacuum chamber. Vacuum sealing system and control system etc.

Vacuum belt filter has many auxiliary devices, including vacuum pumps, filtering cloth rinsing water pump, filter cake rinsing water pump, filtering cloth rinsing water tank and gas-liquid separation cans etc. 

Vacuum belt filter's working principle: Since vacuum belt filter has very complicated structure, its working principle is also very complicated. In a word, it can realize the filtration of gypsum by vacuum pumping. 

Local pic. of vacuum belt filter

Filter cake leaching unit of vacuum belt filter