| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To constantly control a temperature of reheat steam with accuracy in a power generating installation such as a thermal power plant. <P>SOLUTION: The power generating installation is equipped with a boiler device 11 with a regulated furnace 12, and superheaters 14, 16 and reheaters 15, 17 arranged in a flue 13 passing combustion exhaust gas of the boiler device. The combustion exhaust gas is recirculated to the furnace by an exhaust gas recirculation duct 24. When controlling the temperature of the reheat steam, first, an opening of a furnace hopper damper 26 is controlled to adjust a recirculation amount of the combustion exhaust gas. If the temperature of the reheat steam drops even when the recirculation amount of the combustion exhaust gas is adjusted, soot blowing is carried out to clean surfaces of the reheaters. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
