| 摘要 |
PROBLEM TO BE SOLVED: To provide a soot blower capable of effectively removing ash whatever place the soot blower may be installed. SOLUTION: In a soot blower, the extremity end of a long tube (a lance tube) 1 having gas flowed therein is provided with a pair of nozzles 2a, 2b, gas is injected out of the nozzles 2a, 2b while the lance tube 1 is rotated around a longitudinal axis of the lance tube 1, and ashes or the like adhered to the surface of a heat transmitting pipe are removed by injection flow 3. There is provided a rotating means for reciprocating the lance tube 1 around the longitudinal axis at a predetermined angle, and the injection flow 3 out of the nozzles 2a, 2b is injected against a desired ash removing region by the rotating means to remove ashes. At that time, the nozzles 2a, 2b are installed at positions spaced apart by about 90 deg. in a circumferential direction and then an oscillating motionβis carried out with both oscillation angles of 90 deg. (a movable range 9) with a central part between both nozzles 2a, 2b being applied as a reference.
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