Economic Evaluation of the Coal Oxydesulfurization Process: One Unit Train Per Day of Coal

摘要

The chemical coal cleaning process, Oxydesulfurization, being developed at the Pittsburgh Energy Technology Center, has been evaluated. A flowsheet for an 11,845-ton-per-day commercial plant has been used as the basis for a preliminary cost study made by the Process Evaluation Office of the Department of Energy. The coal is from the Lower Freeport seam, and the cleaned coal product will meet the May 1978 EPA standards on sulfur emissions for new steam powerplants. Results of the cost study indicate processing charges of $20.43, $23.37, and $28.66 per ton of product assuming 12-, 15-, and 20-percent discounted cash flows (DCF) and 100 percent equity financing. With 33:67 debt-equity financing, again assuming 12-, 15-, and 20-percent DCF rates, the processing charges are $18.47, $20.41, and $23.92, respectively. (ERA citation 05:011042)