Support-sleeve protective member and solid fuel burner provided with same

Abstract

Provided is a support-sleeve protective member (42) that protects a support sleeve (32), which is disposed radially inside and coaxially with a fuel nozzle (21) for jetting a mixed fluid of solid fuel and air, from collision of the solid fuel against the support sleeve (32) by covering the outer circumference of the support sleeve (32). The support-sleeve protective member (42) is characterized by: being disposed in a region corresponding to a bent portion (21b) in the middle of a conveying path for the mixed fluid in the fuel nozzle (21); and being formed in a cylindrical shape attachable to and detachable from the support sleeve (32), thereby reducing the number of wasteful parts and wasteful costs at the time of replacement, compared to the configuration in which a protective member and a collision plate are integrally replaced.