公开(公告)号：US10391448B2

公开(公告)日：2019-08-27

申请号：US15163854

申请日：2016-05-25

申请人： Florida Power & Light Company

发明人： Matthew Gerard Boze

IPC分类号： B01D53/86 ,  B01D53/90

摘要： A method, controller and computer readable storage medium for dosing ammonia in a selective catalytic reduction (SCR) system for reducing NOx emissions in a flue gas, are disclosed. The method generally includes calculating a running long term average of NOx emissions, calculating a running short term average of NOx emissions and automatically adjusting an instantaneous NOx setpoint based on the running long term and short term averages to ensure compliance with a permit limit. The ammonia dosing requirement is based on a chemical mass-balance approach, and accuracy is enhanced by adjusting for the NO2 to NO composition of NOx.

公开(公告)号：US20170341024A1

公开(公告)日：2017-11-30

申请号：US15163854

申请日：2016-05-25

申请人： Florida Power & Light Company

发明人： Matthew Gerard Boze

IPC分类号： B01D53/86 ,  B01D53/90 ,  F01N3/20 ,  F01N9/00

CPC分类号： B01D53/8696 ,  B01D53/8625 ,  B01D53/90 ,  B01D2251/2062 ,  B01D2257/404

摘要： A method, controller and computer readable storage medium for dosing ammonia in a selective catalytic reduction (SCR) system for reducing NOx emissions in a flue gas, are disclosed. The method generally includes calculating a running long term average of NOx emissions, calculating a running short term average of NOx emissions and automatically adjusting an instantaneous NOx setpoint based on the running long term and short term averages to ensure compliance with a permit limit. The ammonia dosing requirement is based on a chemical mass-balance approach, and accuracy is enhanced by adjusting for the NO2 to NO composition of NOx.