Annual revenue requirements conventional limestone

The first-year annual revenue requirements for the spray dryer MgO FGD process are 28.8M (10.47 mills/kWh) in mid-1984 dollars. The levelized annual revenue requirements for the spray dryer MgO process are 36.1M (13-13 mills/kWh). The first-year annual revenue requirements for the comparable limestone scrubbing process are 32.4M (11.78 mills/kWh) in mid-1984 dollars. The levelized annual revenue requirements for the limestone scrubbing process are 45.2M (16.43 mills/kWh). The first-year annual revenue requirements for the conventional MgO FGD process (including particulate control) are 40.4M (14.69 mills/kWh) in mid-1984 dollars. Levelized annual revenue requirements are 56.7M (20.61 mills/kWh). These costs are summarized in Table III. The complete details are presented in Tables A-IV, A-V, and A-VI in the Appendix. 

As is apparent from this figure the first-year annual revenue requirements can vary somewhat, depending on the price received from the byproduct sulfuric acid. The base-case credit of 65/ton of 10055 H2SO4 results in a first-year annual revenue requirement of 10.47 mills/kWh for the spray dryer MgO process and 14.69 mills/kWh for the conventional MgO process. At a byproduct credit of 35/ton which is approximately equivalent to the price of sulfuric acid in the past (or which could be the 1984 price netted after transportation costs are subtracted for a utility situated far from the ultimate consumer), the first-year annual revenue requirements for the spray dryer MgO process rise nearly 10 percent to 11.53 mills/kWh. This cost, although slightly lower than that for the limestone scrubbing process, is essentially equivalent given the accuracy associated with this study. For... 

TABLE A-IV. CONVENTIONAL LIMESTONE PROCESS ANNUAL REVENUE REQUIREMENTS... 

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