| CPC F22B 7/12 (2013.01) [F23B 90/06 (2013.01); F23H 13/08 (2013.01); F23N 3/045 (2013.01)] | 10 Claims |
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1. A downward mobile gasification boiler for surface gas-phase combustion and pyrolysis of biomass briquette, comprising:
a gasification combustion chamber,
a fuel gas combustion chamber,
a stranding cage slag remover,
a heat exchanger, a water jacket,
an air duct and an air distribution system;
wherein a lower side surface of the gasification combustion chamber is provided with a gasification combustion chamber sealing door; an upper side surface of the gasification combustion chamber is provided with a sealed feeding door; the gasification combustion chamber sealing door and the sealed feeding door are positioned on different sides of the gasification combustion chamber; a bottom of the inner cavity of the gasification combustion chamber is provided with a downward through opening; a bottom end of the through opening is connected with an inlet of the stranding cage slag remover positioned at the lower part of the gasification combustion chamber; a slag removing port of the stranding cage slag remover is communicated with the outside of a boiler, and a sealing door of a slag removing port is arranged at the slag removing port; a top of an inner cavity of the gasification combustion chamber is connected with an air outlet, the upper end of the air outlet is communicated with an air chamber which consists of an outer sleeve and an inner sleeve, the outer sleeve is provided with an outer sleeve air inlet, and the side peripheral wall of the inner sleeve is uniformly provided with a plurality of air outlets; the upper end of the inner sleeve is communicated with the gas combustion chamber positioned at the upper part of the gasification combustion chamber; the side surface of the gas combustion chamber is provided with a gas combustion chamber sealing door, and in addition, the sealing door of the gas combustor and the sealing door of the gasification combustion chamber are positioned at the same side; the heat exchanger is integrally arranged on the sides of the gasification combustion chamber and the gas combustion chamber, and one side of the gas combustion chamber close to the heat exchanger is communicated with the heat exchanger through a smoke outlet; the periphery of the gasification combustion chamber, the gas combustion chamber and the heat exchanger is integrally provided with the water jacket, and the water jacket is communicated with an outer net; the inner cavity of the wall surface of the gasification combustion chamber is internally provided with five air ducts which are a first air duct, a second air duct, a third air duct, a fourth air duct and a fifth air duct respectively; bottom air inlets of the five air ducts are all correspondingly connected with the air distribution system; the air outlet of the first air duct is connected with a first air nozzle positioned at the bottom of the inner cavity of the gasification combustion chamber, and the air outlet of the first air nozzle faces upwards; the air outlet of the second air duct is communicated with the lower part of the inner cavity of the gasification combustion chamber; the air outlet of the third air duct is communicated with the upper part of the inner cavity of the gasification combustion chamber and the lower part of the feeding door; the air outlet of the fourth air duct is connected with a second air nozzle positioned at the top of the inner cavity of the gasification combustion chamber, and the air outlet of the second air nozzle faces downwards; the air outlet of the fifth air duct is communicated with the air inlet of the outer sleeve.
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