The invention discloses a circulating air supply
system of a mechanical fire gate type waste gasification incinerator. The circulating air supply
system comprises a gasifier and a
combustion furnace. A primary
air chamber is arranged below the gasifier and a furnace
hearth of the
combustion furnace. The gasifier is provided with a secondary air supply port and a first
smoke outlet. The
combustion furnace is provided with a second
smoke outlet. The circulating air supply
system further comprises a dust removal device, a first draught fan and a second draught fan. The air inlet end of the dust removal device is connected with the second
smoke outlet. The air outlet end of the dust removal device is connected with the air inlet end of the first draught fan. The air outlet end of the first draught fan is connected with a first manifold. A
branch pipe of the first manifold is communicated with the primary
air chamber of the combustion furnace and the secondary air supply port. The air outlet of the second draught fan is connected with a second manifold. A
branch pipe of the second manifold is communicated with the primary
air chamber of the combustion furnace and the two ends of the dust removal device. After the circulating air supply system is used, continuous gasifying
incineration disposal of a large scale of waste can be achieved,
heat losses can be reduced, heat exchange efficiency can be improved, the heat
recovery efficiency is high, and the
discharge quantity of pollutants can be effectively reduced.