| 摘要 |
<p>PURPOSE:To improve dynamic follow-up performance, by providing an NOx distribution computing element, calculating appropriate NOx discharge set value signals, or an ammonia injection quantity command apparatus, calculating an ammonia injection quantity signal, on each shaft. CONSTITUTION:A power generation plant is composed of plural gas turbines, an exhaust heat recovery boiler, and a steam turbin. At least one or more of the momentary value of the nitrogen oxide compound and ammonia discharged quantity or a movement time means value of a whole sequence is kept at a given prescribed value or less respectively by a sequential denitration control device 11. An NOx distribution computing element 16, for computing appropriate NOx discharge set value signals 27 and 28, is provided on each shaft in the control device 11. Or, an ammonia injection quantity command apparatus, calculating an appropriate ammonia injection quantity signal, is provided on each shaft. Thus NOx discharge quantity set value signals, different for each shaft can be calculated to be outputted for improving dynamic follow-up performance.</p> |
