The present application provides a kind of
snail shape primary
combustor capable of igniting and burning in burner, including short cylindrical shell, high-temperature-resistant heat-insulating side cover, igniter, primary air pulverized
coal gas flow injection inlet, arc bottom U-shaped expansion channel, wall surface
necking pulverized
coal concentration weir,
flue gas and gasification gas outlet and base;The bottom of short cylindrical shell is base, and high-temperature-resistant heat-insulating side cover is arranged on one end surface of short cylindrical shell and connected therewith;Primary air pulverized
coal gas flow injection inlet is arranged on one side of the bottom of the side of short cylindrical shell, and
flue gas and gasification gas outlet is arranged on the other side of the bottom of the side;Wall surface
necking pulverized coal concentration weir is arranged on the inner wall of short cylindrical shell on the side of primary air pulverized
coal gas flow injection inlet, and arc bottom U-shaped expansion channel is arranged on the inner wall of short cylindrical shell on the side of
flue gas and gasification gas outlet;Igniter is arranged at the outlet position of arc bottom U-shaped expansion channel.