| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a boiler capable of attaining low O<SB>2</SB>, low NOx and low CO. <P>SOLUTION: This boiler comprises a premixing gas burner 10 and water pipes 21, 22 and 23 adjacent to the premixing gas burner 10. A premixed gas from the gas burner 10 is injected to the water pipes 21, 22 and 23 at a predetermined angle. The boiler further comprises an exhaust gas supply means 41 supplying exhaust gas to a combustion reaction area of the premixed gas, and combustion with air ratio of 1 to 1.3 is performed in the premixed gas burner 10. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
