Optimal NO x removal by a selective catalytic reduction (SCR) system requires the inlet gas temperature to remain within a prescribed range. How does a baseload unit meet NO x permit limits when it’s ...

For nearly five years, two selective catalytic reduction (SCR) systems have operated almost around the clock at Dynegy Midwest Generation’s Baldwin Energy Complex in Baldwin, Ill. The SCR systems ...

In a brief filed in November in its ongoing litigation with the U.S. Environmental Protection Agency, truck and engine maker Navistar argued that EPA violated federal law not only by allowing its ...

The U.S. Environmental Protection Agency (EPA) and the California Air Resources Board (CARB) have presented preliminary proposals aimed at the alleged compliance loopholes found in current 2010 liquid ...

Emission regulations for combustion systems have been in place for more than half a century and in the 1990’s, the Clean Air Act put a spotlight on emissions specifically from industrial boilers.

RJM’s ARIS SCR technology recently achieved a 95.9 percent NOx reduction on a 320 kW lean burn natural gas engine. The system was installed at the corporate headquarters of Clean Air Partners located ...

The U.S. Environmental Protection Agency (EPA) "has been diverted from its environmental mission and somehow talked into an environmentally hostile action," according to court papers filed by Navistar ...

The California Air Resources Board (CARB) held a public workshop yesterday to discuss possible changes in the way selective catalytic reduction (SCR) systems react to malfunctions or other problems in ...

Aiming to Meet the IMO's Tier III NOx Emission Controls Nippon Yusen Kabushiki Kaisha, Oshima Shipbuilding Co. Ltd., Mitsubishi Heavy Industries Ltd., Akasaka Diesels Limited, and Sakai Chemical ...

The Environmental Protection Agency has updated its guidance for certification of truck engines using selective catalytic reduction to reduce emissions, calling on SCR engine makers to develop warning ...