| OCR Text |
Show original torm and is clean and light for easy disposal. This is the same for a large power plant where the spent fuel will be quite free of residual carbon. Hence, it can be reclaimed for the manufacture of cement, building block, and road pavement. On the other hand, the ash from present power plants is not suitable for these applications because of high carbon content. This further testifies to the fact that the fast reaction process is not an ideal combustion process. CONCLUDING REMARKS From this preliminary analysis, jt is evident that the combustion of shapedcharge coal has superior overall combustion characteristics that are not obtainable by other presently known techniques. Shaped-charge coal permits stable combustion under ideal temperature for complete combustion with almost no production of undesirable CO, NO x and SO x gases. It is also free of the production of micro-flyash. Its stable combustion characteristic is most suitable for automatic control by a computer to achieve optimum combustion efficiency for both large power-generation systems as well as small home-heating systems. Hence, it should deserve serious consideration by scjentists working in this field. REFERENCES 1. D.B. Stickler, F.E. Beker, and S.K. Ubhayakar, Combustion of pulverized coal in high temperature preheated air, AIAA 17th Aerospace Sci. Meeting, New Orleans, La., 1979, Paper #79-0298. 6 |
