INNOVATION July-August 2016

fea t ure s

Clearing the Air ) Reduction Project at the Metro Vancouver Waste-to-Energy Facility for a cost of $5.4 million. This project decreased NO x emissions by more than half and included two main components. The first, which involved physical modifications to the combustion air system and combustion monitoring and controls, introduced a Low NO x (LN TM ) process, a proprietary process developed by Covanta Energy to substantially reduce NO x formation. The second main component involved upgrading the selective non-catalytic reduction (SNCR) system, which reduces NO x by supplying additional ammonia to the furnace in a spray pattern that supports a more complete chemical reaction. I n 2015, Metro Vancouver completed a Nitrogen Oxides (NO x

Project Reduces Waste-to-Energy Facility’s Nitrogen Oxides Emissions

Chris Allan, P.Eng.

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J U LY/AU G U S T 2 016

i n n o v a t i o n