| 摘要 |
PROBLEM TO BE SOLVED: To provide a burner lance that can improve heating efficiency and has a compact size facilitating its handling and maintenance. SOLUTION: This burner lance has double-pipe structure including an ignitable fluid supply pipe 2 for supplying ignitable fluid and a fuel fluid supply pipe 3, which surrounds the pipe 2, for supplying fuel fluid. The clearance between these supply pipes 2, 3 is a fuel fluid passage 8. In the ignitable fluid supply pipe 2, a primary fuel fluid guide 16 is formed to guide a portion of the fuel fluid in the fuel fluid passage 8 into this supply pipe 2. Remaining portion of the fuel fluid in the fuel fluid passage 8 can be injected outside as secondary fuel fluid from the frond end sides of the supply pipes 2, 3 through a secondary fuel fluid injector 17. COPYRIGHT: (C)2004,JPO
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