Industrial Fuel Gas Demonstration Plant Program: Task VIII Report, Demonstration Plant Economic Analysis and Commercial Plant Reassessment

摘要

This section presents the sensitivity of U Gas price to various economic parameters. Table 2.6 shows U Gas product gas cost with different values for the following paramters: coal price, capital cost of plant, phase III cost, and load factor. A change of $1 per ton in the coal price changes gas cost by 6 cents per MM Btu. Each $10 MM change in capital cost changes the product gas cost by 8.4 cents per MM Btu. Each $10 MM in phase III costs changes the product gas cost by approximately 6 cents per MM Btu. The gas cost sensitivity to load factors varies because of the presence of the credit unit, which manufactures SNG in excess of that required for credits, for sales as a by product at $3.00 per MM Btu. Generally, a reduction in load factor from 100% by 90% increases gas cost 30 to 40 cents per MM Btu. Reduction to 75% load factor from 90% increases cost by approximately 60 to 70 cents per MM Btu. A 1% change in interest rate changes gas cost by 11.5 cents per MM Btu at 100% load factor, 12.5 cents per MM Btu at 90% load factor, and 15 cents per MM Btu at 75% load factor. Problems in comparing estimated gas cost in the demonstration and commercial plant designs are considered. (ERA citation 06:000052)