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Title: Select Use Of Natural Gas: Environmental And Other Benefits
Author: Paul L. Wilkinson, Richard H. Hilt, Donald O. Johnson
Source: American Gas Association 1984
Year Published: 1984
Abstract: This paper describes the results of a cooperative study between the A.G.A. and GRI, prepared by Environmental Research and Technology entitled Evaluation of the Environmental and Other Benefits of the Select Use of Natural Gas, which examined various options for utility powerplants to meet emissions objectives. The select gas use option can not only help plants meet sulfur dioxide (SO3) emission reduction goals, but can also show a decrease in nitrogen oxides (NO:) emissions and waste ash. When comparing the use of pollution controls such as scrubbers and the use of select gas (from an economic point of view) to achieve these reductions, the addition of a scrubber is generally more expensive than using select gas or very close to the cost of using select gas. The capital cost of purchasing and installing a scrubber and ancillary equipment make the scrubber option less economically attractive. The major competitor to using select gas is burning low-sulfur western coal, which is either the same cost or less than the cost of using select gas. In many cases where low-sulfur coal is less expensive, regional or local coal regulations are in effect therefore, select gas use becomes the preferred option. These observations, however, are sensitive to future gas and coal prices and capital costs. The two fuel-price-forecasting models employed in this study contain different assumptions about the future price of coal, oil, and natural gas supplies.

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