Effect of product upgrading on fischer-tropsch indirect coal liquefaction economics

摘要

Conceptual plant designs with cost estimates for indirect coal liquefaction technology to produce environmentally acceptable transportation liquid fuels meeting the Clear Air Act requirements were developed for the U. S. Department of Energy (DOE) under Contract No. DE-AC22-91 PC90027. The designs incorporate the latest development in coal gasification technology and advanced Fischer-Tropsch (F-T) slurry reactor design. ASPEN process simulation models were developed to provide detailed plant material and energy balances, utility requirements, operating and capital costs. A linear programming model based on a typical PADD II refinery was developed to assess the values of the produced F-T products. The results then were used in a discounted cash flow spreadsheet model to examine the effect of key process variables on the overall F-T economics.