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Show costs for the Thermal DeNOx process are quoted at $O.Ol/MBTUs, including compressor costs. Corrected for inflation this would become $O.02/MBTUs. In the Thermal DeNOx process considerable success has been achieved with injection systems in which the nozzles that inject the reagent are mounted on the walls of the boiler or furnace. Costs for this kind of injection system are reportedly trivial compared to other process costs. Since natural gas is available by pipeline, Clean Fuel Injection is unlike Thermal DeNOx in that there are no costs for reagent storage. Thus the estimated cost for Clean Fuel Injection in this example is $0.072/MBTUs. This is quite a modest cost relative to the costs of other pollution control technologies, e.g. flue gas scrubbing to remove S02 which typically costs $3-$5/MBTUs or selective catalytic reduction of NO with a typical cost of $3/MBTUs. Prevention of Dioxin Emissions from the Burning of Municipal Solid Waste Dioxin compounds can be formed in the combustion of waste, both hazardous and municipal. It is generally believed that this dioxin formation occurs at relatively low temperatures via a reaction between HCl and organic material which escape destruction in the flame and thermal oxidation zones. Clearly one way in which one could prevent dioxin formation, then, would be to destroy the organic precursors and clean fuel injection appears to be a very promising and inexpensive method of so doing. ACKNOWLEDGEMENTS This work was supported by the National Science Foundation under a Phase I Small Business Innovation Research Grant, award number ISI- 8860784 and by the New Jersey Commission on Science and Technology under a Bridge Grant. REFERENCES 1 K. Lee, N. Morgan, J. L. Hansen, G. M. Whipple, "Revised Model for the Prediction of the Time-Temperature Requirements for Thermal Destruction of Dilute Organic Vapors", 75th Annual Meeting of APCA New Orlean, Louisiana, June 1982. 2 K. Lee, H. J. Jahnes, and D. C. Macauley, "Thermal Oxidation Kinetics of Selected Organic Compounds", paper no 78-58.6, 71st Annual Meeting of the Air Pollution Control Association. June 1978, Houston, Texas 3 K. Lee, J. L. Hansen, D. C. Macauley, 1979 "Predictive Model of the Time/Temperature Requirements for Thermal Destruction of Dilute Organic Vapors", 72nd Annual Meeting of APCA. Cincinnati, OH 9 |
