Description：

Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide

(SO2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes.

After the FGD is treated with our production line, the FGD gypsum can be used as construction gypsum and agricultural gypsum. 

Technology of FGD treatment:  Two-step treatment.  The first step is to remove the free water in the FGD raw material(the process is also called preheating).  Hot air and FGD raw material is mixed during going through hot air tube.  The second step is to remove part of the crystal water in the preheated FGD gypsum. 

The FGD gypsum production line is composed of  hot air furnace,  preheating  system, calcining system, dust collecting system, modifying system, conveying system, packing system and storage system. 

Working Process of the FGD Production Line

The basic process of making gypsum powder is:  FGD raw material —— preheating —— calcining —— dust collecting —— pin mill modifying —— silo—— packing machine

Capacity of FGD Gypsum Production Line

Features of the FGD gypsum production line

＊Two-step technology in the FGD gypsum production line has the following advantages:

＊Both the preheating system and the calcining system use the same energy source: hot air furnace.  This makes the production line more energy-saving, and less investment cost. 

＊The pin mill or ball mill is arranged after calcining. It modifies the FGD gypsum, and makes the FGD gypsum have stable performance. 

＊Horizontal dust collecting system improves the filtering result. 

＊Hot air is recycled. More energy is saved and the production cost is lower. 

＊DCS control system is adopted in the production line. It supplies more automatic control level, much stabler running performance, and makes the final product have more reliable quality.

Pictures of the Production Line