Burner for highly caking coal, and gasifier

摘要

A burner for highly caking coal having a double pipe structure of solid fuel flow channel and gasifying agent flow channel, which burner prevents or inhibits any melting/expansion of highly caking solid fuel particles by temperature rise thereof attributed to intra-burner heat transfer to thereby realize stable operation of gasification furnace. There is disclosed a burner (12) for highly caking coal comprising, provided through a peripheral wall (11) of gasification furnace (10) for gasification of a highly caking solid fuel pulverized into particles, a double pipe structure consisting of a solid fuel flow channel (13) for feeding the solid fuel into the gasification furnace (10) by air stream carriage and a gasifying agent flow channel (14) for feeding a gasifying agent into the gasification furnace (10). The burner further comprises a cooling water flow channel (20) for cooling water circulation provided between the solid fuel flow channel (13) and the gasifying agent flow channel (14) so as to have a triple pipe structure. The cooling water after use is recovered.