Producer gas conditioning from a rice husk gasifier for engine application
DOI:
https://doi.org/10.52151/jae2005422.1122Abstract
The producer gas generated from an open core throatless down draft gasifier even after passing through a gas conditioning unit comprising of a water scrubber, dry filter, a cyclone separator and a fabric filter, contains about 200 mgINm3 of tar. This was specially the case during rainy season i.e periods of high relative humidity and temperature. The tar after condensing stick to the engine valves and connecting pipe lines causing problems in smooth operation of the engine. The tar content in the gas is a function of gas residence time in the dry scrubber once the gas is cooled to ambient temperature in water scrubber. A series of experiments were conducted to study the effect of gas residence time and the superficial gas velocity in the dry scrubber on tar reduction in producer gas keeping the water scrubber and fabric filter as such. With a gas residence time of 12-15 seconds and superficial gas velocity of 0.03 m1s in dry filter the tar content can be brought down to around 50 mg/Nm3.
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References
Anonymous 1979. Generator gas: the Swedish experience from 1935 to 1945. Solar Energy Research Institute, Boulder, Colorado, USA, 1979, SERIISP 33-140.
Anonymus, 1996, Mid term review report of AICRP on renewable energy Sources, Producer gas component, School of Energy Studies for Agriculture, PAU, Ludhiana, pp 27-57.
Anonymus, 2000, Annual report of AICRP on renewable energy Sources, Producer gas component, Report No.PAU-SESA-0299, School of Energy Studies for Agriculture, PAU, Ludhiana, pp 28-46.
Creamer KS; Jenkins BM; Goss JR 1986. Small scale rice hull gas producer-gasoline engine performance. Paper No.86-3071-ASAE Summer meeting, June 29July 2, San Luis Obispo, CA.
Hoki M; Sato K; Miao Y; Machisita R; Yoshimura A; TakemotoH 2000. Combustion and temperature control of rice husk gasifier. Proceedings of IAEC, Bangkok, Thailand, December 3-'7, 2000. pp. 386-391.
Jain, AK; Goss JR 2000. Determination of reactor scaling factors for throatless rice husk gasifier. Biomass and Bioenergy 18(3) 249-256.
Jain AK; Bhatnagar AP; Singh J 1996. Paddy husk-a source of decentralized energy generation. Energy Management 20(4) 11-17.
Jain AK; Sharma SK; Singh D 1997. Availability and characteristics of paddy husk as a renewable energy source. Journal of Agricultural Engineering, 34(1) 10-14.
Jain AK; Sharma SK; Singh Daljit 2001 Development of a kinetic model for designing throatless gasifier. Indian Chemical Engineer, SectionA 43 167-171.
Jain, AK; SharmaSK; SinghD 1999. Reaction kinetics of paddy husk thermal decomposition. J. Solar Energy Engineering 121, 25-30.
Kaupp A; Goss JR 1984. Small scale gas producer engine system. GATFlGTZ, Germany publication. Kaupp A; Goss JR 1983 Technical and economical problems in the gasification of rice hulls, physical and chemical properties. Energy in Agriculture, 1 201-234.
KauppA 1984Gasification ofrice hulls. Friedr, Vieweg & Sons Braunschweig! Wiesbaden
Reed TB; Levie B; Garboski MS 1987 Fundamentals, development and scale-up of the oxygen stratified downdraft gasifier. SERI, golden, Colorado, USA
Singh J; Jain AK; Bhatnagar AP 1996, Producer gas conditioning for mechanical energy generation. Proceedings of the International agricultural Engineering Conference, Pune, December 9-12,1996, 1011-1O19.
Singh J; Jain AK; Bhatnager AP 1994. 10 kW paddy husk gasifier for on-farm electricity generation. Proceedings of IAEC, Bangkok, Thailand, December 6-9, 1994,760-767.
