Studies on SCR NOx Removal Catalyst Using Micro-reactors -Deterioration and Countermeasures

NOx removal over a double bed NSR-SCR reactor configuration

Introduction NOx Storage-Reduction (NSR) catalytic systems and urea-SCR are both considered viable solutions for the NOx removal under lean conditions. In NSR systems (e.g. PtBa/Al2O3) the removal of NOx is realized under cyclic conditions, by alternating long lean periods during which NOx are adsorbed on the catalyst with short excursions under rich conditions during which the stored NOx are r...

Limitations of Nox Removal by Pulsed Corona Reactors

1 Joint Instit. High Temp., Russian Acad. Sci., Izhorskaya st. 13, 2 building, 125412 Moscow, Russia Oranjewoud-HMVT, P.O. Box 8590, 3009 AN Rotterdam, The Netherlands Eindhoven University of Technology, P.O.Box 513, 5600 MB Eindhoven, The Netherlands Centrum Wiskunde and Informatica (CWI), P.O.Box 94079, 1090 GB Amsterdam, The Netherlands e-mails: [email protected], [email protected], ebert@c...

A SCR Model based on Reactor and Engine Experimental Studies for a Cu-zeolite Catalyst

Fluidized bed plasmas reactor for catalyst pretreatment. Application for SCR NOx by hydrocarbons in stationary and mobile sources

Introduction Nowadays, almost all major chemicals are produced by catalytic processes. Among them, heterogeneous catalysis plays a very active role, because of environmental concerns. The use of plasmas for catalysis is now well developed and some authors have used plasma treatment in a low pressure system to replace the thermal calcination of the catalysts [1]Fluidized bed reactors offer the p...

Catalyst Research Promises to Reduce Scr Costs

If adopted by EPA, proposed new regulations on stack emissions will force many utilities with coalfired boilers to reduce their NOx emissions to levels which are substantially lower then can be achieved with current low NOx burner technology. To meet these requirements, some utilities are anticipating the need to use selective catalytic reduction (SCR) for NOx control. New SCR catalysts under d...