| 摘要 |
<P>PROBLEM TO BE SOLVED: To prevent overheat of a water tube during boiler combustion at a high load by successfully performing an automatic blow according to an operation state of a boiler having a variable load. <P>SOLUTION: In automatic blow control of the boiler, two portions from the steam separator 2 of the boiler and from the lower header 3 of the boiler are formed as positions for extracting blow water from a boiler body 1, and the positions for extracting the blow water are selectively switched according to the operating state of the boiler. In this case, the positions for extracting the blow water are switched to blow extraction from the steam separator 2 from a high combustion (100%) load to an intermediate combustion (to 30%) load, and to blow extraction from the lower header 3 at a low combustion (30-10%) load. <P>COPYRIGHT: (C)2012,JPO&INPIT |
