Electricity-Independent Generation of Silicon Based on the Use of Rice Husk: A Concept Process
The present paper is based on a term project for final year undergraduate students, requiring them to evaluate a process for producing silicon from rice husk. The traditional method for production of silicon involves carbothermal reduction of quartz in electric arc furnaces at temperatures exceeding 2000 °C. The technology consumes a considerable amount of electrical energy as well as fossil fuels, resulting in significant CO2 emissions. A flowsheet for production of silicon metal from rice husk is laid out in this paper. The technology will consist of combustors, which will generate steam using the rice husk biomass, power generator, and electric furnace for reduction of the rice husk. Materials and energy balance calculations presented here indicate that such process can be operated independent of external electricity.
KeywordsSilicon production rice husk ash process evaluation
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- 2.E.C. Beagle, Rice Husk Conversion to Energy, in, FAO, Rome, 1981.Google Scholar
- 7.D.N. Bose, P.A. Govindacharyulu, Progress in Solar-Grade Silicon from Rice Husk, in, Pergamon Press, Perth, Aust, 1984, pp. 2735–2739.Google Scholar
- 13.A. Schei, et al., Production of High Silicon Alloys, (TAPIR FORLAG), Trondheim, 1998.Google Scholar