Laserfiche WebLink
<br />W <br />....:J <br />c:n <br />N <br /> <br />pipelines is their relative freedom from the effects of inflation which <br />is the result of their low operating costs. Based upon projections of <br />the ETSI pipeline proposed for the Powder River Basin in Wyoming, <br />pipeline tariffs are projected to be approximately equal to rail tariffs <br />at the start of pipeline operation. However, the two cost curves are <br />expected to diverge over time in favor of the slurry line [20]. <br /> <br />In an effort to conceptualize a potential coal market to support assump- <br />tions for the slurry pipeline study alternatives, table 12 summarizes a <br />composite estimate based on coal requirements projected by WSCC and other <br />forecasts found in the literature, <br /> <br />Table 12. - Estimated coal requirements <br /> <br />Coal use <br /> <br />Area <br /> <br />Total tonnage <br />1981-1990 <br />(106 tons/yr) <br /> <br />Total tonnage <br />1990-2000 <br />(106 tons/yr) <br /> <br />Coa l-fi red Southern California 10 20 <br />powerp 1 ants <br />Coal gasification Southern California 1 10 <br />Coal export Southern California 5 2Q <br />Subtotal 16 80 <br />Coal-fired Colorado River Basin 34 60 <br />powerpl ants States (approx.) <br />Total 50 140 <br /> <br />Three major issues are readily apparent when saline water is considered <br />as a tr ansport med i um for co a 1 : <br /> <br />a. What chemical changes occur in the saline water, and can the <br />water be used for beneficial purposes after slurry pipeline delivery? <br /> <br />b, What happens to the pulverized coal after saline water contact, <br />and will burning the affected coal create any new problems in power <br />generation or air pollution? <br /> <br />c. How is the saline water disposeQ of after coal/water separation? <br /> <br />An EPA project summary titled "Water Pollution Potential of Coal-Slurry <br />Pipelines," published June 1981, concludes "saline water is not a <br />satisfactory transport medium since it increases the mineral content of <br />the coal which would produce greater quantities of fly ash and exacer- <br />bate corrosion of furnace components." <br /> <br />IV-24 <br />