Circulating Fluidized Bed Semi Dry Desulfurization Technology

Our company's semi dry desulfurization technology is a desulfurization method based on the principle of circulating fluidized bed, which makes the absorbent react with Ca (OH) 2 in circulating fluidized bed. The bed temperature was controlled at the optimal reaction temperature by spraying atomized water. The full reaction of SO2 and Ca (OH) 2 was realized by good gas-solid contact, mixing and turbulence in the reactor. After the reaction, the flue gas enters the dust collector, and most of the materials from the dust collector return to the circulating fluidized bed reactor through the material circulation system. There is only a very small amount of dry by-products, which will not cause secondary pollution to the water.

Schematic diagram of semi-dry desulfurization process

The whole desulfurization system consists of hydrated lime preparation and injection system, desulfurization reaction system, gas-solid separation system, material circulation and discharge system, water injection system, etc.

3D Model of Semi Dry Desulfurization Technology

Main features:

            (1) The desulfurization efficiency of the system can reach more than 90%, and other harmful gases, heavy metals and other pollutants can be effectively removed;

            (2) It has the advantages of simple structure, small floor area, reliable operation and low cost of investment, operation and maintenance;

            (3) The corrosion of the system is small and the availability of the whole equipment is high;

            (4) No waste water is produced and the by-product of desulfurization is dry, which is easy to be treated;

            (5) It has a wide range of applications.

Semi Dry Desulfurization Flow Field Simulation