Reduced‐order modeling for the control of selective noncatalytic reduction of nitrogen monoxide. Issue 3 (30th October 2015)

• Record Type: Journal Article
• Authors: Farcy, Benjamin; Vervisch, Luc; Domingo, Pascale; Perret, Nicolas
• Is Part Of: AIChE journal. Volume 62:Issue 3(2016)
• Page Start: 928
• Page End: 938
• Publication Date: 2015-10-30
• Subjects: nitrogen monoxide reduction -- selective noncatalytic reduction -- reduced‐order model -- large‐eddy simulation; Chemical engineering -- Periodicals; Génie chimique -- Périodiques; 660.28
• DOI: 10.1002/aic.15079
• Languages: English
• ISSNs: 0001-1541

Abstract

Abstract : The design of a reduced‐order model is discussed to help in the control of selective noncatalytic reduction (SNCR) of nitrogen monoxide. Instead of relying on a look‐up table of nominal operating points, it is proposed to solve for the time evolution of a set of stochastic particles interacting through a model for turbulent mixing and a reduced chemistry. Each particle is representative of a fraction of the mass flowing in the system in gaseous or liquid form. To calibrate and validate the reduced‐order model, which runs in a few minutes on a desktop computer, reference three‐dimensional and unsteady large‐eddy simulation is performed in the complex geometry of a real incinerator. This is done solving the full set of conservation equations of mass, momentum, and energy over a 162 million cells mesh. The results confirm the possibility of real‐time SNCR optimization from the solving of partial differential equations. © 2015 American Institute of Chemical Engineers AIChE J, 62: 928–938, 2016