| 摘要 |
<p>PURPOSE:To make it possible to attain the optimum combustion irrespective of any operating conditions in a burner combustion device for an exhaust gas afterburning type boiler which uses an exhaust gas from a gas turbine and a fresh air selectively as a combustion air. CONSTITUTION:Lean flame burners 22 and 23 are installed to the upper part and lower part of a thick flame burner having two nozzles 21a and 21b. Two fuel gas supply passages 33a and 33b are connected to the thick flame burner 21 while each of fuel gas supply lines 31 and 32 is connected to the leans flame burners 22 and 23 respectively. Combustion air supply lines 24, 25 and 26 are connected to respective burners 21, 22 and 23 where individually controlled burner valves 34, 35, 36a and 36b are installed to each of the fuel gas supply lines 31, 32 and 33a and 33b. At the same time, individually controlled air dampers 28, 29 and 30 are installed to each of the combustion air supply lines 24, 25 and 26 respectively.</p> |
