Global kinetic modeling of NH3-SCR with two sites of NH3 storage on Cu-SSZ-13

Development of integrated technology for waste heat recovery from humid flue gas of hot water boiler

“…The inlet temperature of flue gas was set to 600°C, the operating temperature range of SCR reactor is 310°C to 420°C, 29 the outlet temperature of evaporator I was set to 390°C limited by this temperature range, and it is considered that there is no heat loss in SCR reactor, the inlet temperature of evaporator II is 390°C. The exhaust steam parameter of an industrial steam turbine is 0.5 MPa (220°C), the parameter of water entering economizer is 90.0°C (0.2 MPa), and the condensate flow is 23 190 kg/h under 100% load rate.…”

Modeling and analysis of ammonia oxidation and nitrous oxide formation on a dual-layer ammonia slip catalyst for diesel after-treatment

“…The mathematical model used in this study was a two-phase one-dimensional reactor model. 21,35,36 The reactor model follows the assumption of uniform inlet gas conditions and catalyst washcoat loadings, fully developed laminar flow, and negligible axial dispersion and pressure drop. The species balance equations for the fluid, solid and surface phases are shown below.…”

“…Ignoring reactions such as Fast SCR, NO 2 SCR, NH 4 NO 3 storage, and N 2 O formation could lead to the decline of accuracy in predicting reactant conversion and product selectivity, especially for the Cu/SSZ-13 catalyst. 10,[20][21][22] However, the published kinetics have not comprehensively modelled the SCR chemistry. Moreover, since the powerful greenhouse gas N 2 O will be regulated in the future, it is necessary to model N 2 O formation in the dual-layer ASC catalyst for precise model-based NH 3 and N 2 O emission control.…”

Clean Condensing Gas Furnace

“…Figure 19(b) shows the sample soot particles collected from the AGR. These soot particles include the deposition of unburnt HC and carbon [49,50]. The collected particle samples were analyzed using SEM at ORNL.…”