Solid fuel burner and flame stabilizer for solid fuel burner

A flame stabilizer provided at an opening end portion of a fuel nozzle of a solid fuel burner having a cylindrical first gas nozzle through which a mixed fluid of a solid fuel and a carrier gas flows and a second gas nozzle disposed on an outer peripheral side of the first gas nozzle, the flame stabilizer for the solid fuel burner comprising:

• an annular contraction forming member configured to reduce a flow passage for a combustion gas which flows on an outer peripheral side of the flame stabilizer inward from an outside;
• a plurality of fin members which extend in a direction along a flow of the combustion gas and are provided in the flame stabilizer in a circumferential direction thereof;
• and
• a guide member provided to deflect the flow of the combustion gas passing through the annular contraction forming member outward,
• wherein an outer diameter of the guide member is larger than an inner diameter of the annular contraction forming member,
• the first gas nozzle, the guide member, and the contraction forming member are configured to be integrally attachable/detachable toward an outside of the furnace in an axial direction of the first gas nozzle,
• the fin members which are disposed between the contraction forming member and the guide member to rectify the secondary air flowing through the second flow passage, and
• the contraction forming member supported by the fin member.

A flame stabilizer provided at an opening end portion of a fuel nozzle of a solid fuel burner, the flame stabilizer for the solid fuel burner comprising:

• an annular contraction forming member configured to reduce a flow passage for a combustion gas which flows on an outer peripheral side of the flame stabilizer inward from an outside;
• a plurality of fin members which extend in a direction along a flow of the combustion gas and are provided in the flame stabilizer in a circumferential direction thereof;
• and
• a guide member provided to deflect the flow of the combustion gas passing through the annular contraction forming member outward,
• wherein an outer diameter of the guide member is larger than an inner diameter of the annular contraction forming member,
• the fin members which are disposed between the contraction forming member and the guide member to rectify the secondary air flowing through the second flow passage, and
• the contraction forming member supported by the fin member.