Clearing The Air
Oxidation catalyst reduces emissions; designed to withstand turbulence, provide quick startup
Johnson Matthey’s Stationary Emissions Control (SEC) group said it has successfully commissioned a CO oxidation catalyst to reduce CO, VOC and toxic emissions from four 200 MW Siemens SGT6-5000F simple cycle-gas turbines at GenOn Energy’s Marsh Landing Generating Station (MLGS) in Antioch, California, U.S.A.
The company said its catalyst sets new BACT levels for large frame simple-cycle turbines for CO and VOC emissions at the MLGS plant, which is capable of quickly generating up to 800 MW of electricity if renewable power sources – such as wind turbines and solar power – are unavailable. Benefits of the catalyst include fully brazed substrate to withstand turbulence and quick startup capability, Johnson Matthey said.
To reduce installation time, the company designed special “drop-in” catalyst frames that allowed the full-width reactor sections to be dropped into place with a crane, eliminating multiple days of site labor and reducing installation costs.