Engine Exhaust Catalyst Systems


Gas turbines and reciprocating engines emit hazardous pollutants in the exhaust gases created during the combustion process. To preserve our living environment the US government passed the Clean Air Act of 1970 which created the Environmental Protection Agency to enforce the requirements of the CAA.

From this legislation many laws have been enacted to clean and reclaim our natural environment. Some of these have been directed at the natural gas transmission industry in the past 10 years and thus there have been many different actions taken to eliminate and reduce pollution emissions in the natural gas industry.

Oxidation catalyst systems are one such solution. They are designed to remove both hazardous air pollutants or HAP’s and volatile organic compounds or VOC’s from an engine’s exhaust gases. Placed in the exhaust of either a gas turbine or a reciprocating engine, catalysts use precious metals to attract and remove hazardous emissions such as nitrous oxide, carbon monoxide, formaldehyde, acrolein, methanol and acetaldehyde.

The EPA established the NESHAP (National Emission Standards for Hazardous Air Pollutants) for the control of HAP (Hazardous Air Pollutants) for RICE or stationary reciprocating internal combustion engines. This led to the need to remove, primarily formaldehyde, from the exhaust of RICE and the use of three way catalysts to meet this need. Three way catalysts remove NOx, CO and VOC’s from the RICE exhaust emissions.

Mueller Environmental Designs, Inc. supplies complete engine exhaust oxidation catalyst systems for gas turbines and reciprocating engines to reduce emissions and meet EPA requirements.


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