Increasingly stringent regulations by the EPA and state air quality agencies are making the reduction of exhaust emissions from industrial engines, such as are used in the oil and gas industry, ever more important for their operators. Not only are these regulations getting increasingly strict with time, but there will be both substantial fines and possible criminal penalties for non-compliance in the future.

This presentation describes how harmful exhaust emissions are formed during the combustion process, what the current regulations are in various areas of the country and where they are probably headed in the foreseeable future. It then discusses possible emission reduction strategies in two broad categories, combustion modification and exhaust after treatment, using catalytic converters.

Each of the three types of catalyst substrates are discussed, with the advantages and disadvantages of each, as well as the relative advantages and disadvantages of the two basic catalyst shapes and the four possible catalyst locations.

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