| 摘要 |
<P>PROBLEM TO BE SOLVED: To effectively utilize an exhaust gas of a low heating value of 300 kcal/Nm<SP>3</SP>(1255.8 kJ/Nm<SP>3</SP>) or less as a fuel gas of a burner. <P>SOLUTION: A tubular flame burner is used, the fuel gas is introduced to a combustion chamber from gas introduction nozzles 21, 23 for oxygen-containing gas, the oxygen-containing gas is introduced from gas introduction nozzles 21, 23 for oxygen-containing gas, and the fuel gas is burnt while swirling. As the oxygen-containing gas, a gas having an oxygen content of 60 vol% or more is used, and an introduction quantity of the oxygen-containing gas is determined to keep a ratio of supply oxygen quantity to theoretical oxygen quantity within a range of 1.0-1.4. <P>COPYRIGHT: (C)2008,JPO&INPIT |
