FRESH AIR PRE-HEATING FUEL DUST RECOVERY TYPE GASIFICATION FURNACE

摘要

A fresh air pre-heating fuel dust recovery type gasification furnace comprises a furnace body (1), a feeding motor (2), a raw material spiral conveyor (3), a storage hopper (4), a fuel gas guide pipe (5), a cyclone dust collector (6), a motor (7), a dust spiral conveyor (8), an inner container (9), and a spiral wind deflector (10). The inner container (9) is disposed in the furnace body (1). An annular space (11) is formed between the furnace body (1) and the inner container (9). The spiral wind deflector (10) is disposed in the annular space (11). An air inlet pipe (12) communicating with the inner container (9) is disposed on the upper side of the furnace body (1). An air inlet (13) communicating with the annular space (11) is formed in the bottom of the one side of the inner container (9). An igniter (14) is disposed on the lower portion of one side of the furnace body (1) and located at the air inlet (13). An ash discharge port (15) is formed in the lower end of the furnace body (1). The top of the furnace body (1) is communicated with the cyclone dust collector (6) by means of the fuel gas guide pipe (5). The motor (7) drives the dust spiral conveyor (8) to send dust discharged out of the cyclone dust collector (6) back into the inner container (9). The feeding motor (2) drives the raw material spiral conveyor (3) to send raw materials in the storage hopper (4) into the inner container (9). Fresh air enters the annular space (11) through the air inlet pipe (12), flows downwards along the spiral wind deflector (10), is heated by the furnace body (1) and then enters the inner container (9) through the air inlet (13). Before entering the inner container (9), fresh air is preheated by using heat of the furnace body (1) and then is guided into the inner container (9), and therefore gasification work efficiency is greatly improved. The motor (7) drives the dust spiral conveyor (8) to send dust discharged out of the cyclone dust collector (6) back into the inner container (9), and therefore energy conservation and environment protection are achieved.