FABRICATING AND PERFORMANCE EVALUATING OF AN EXPERIMENTAL PROTOTYPE OF DOWNDRAFT BIOMASS GASIFIER | ||||
| Zagazig Journal of Agricultural Research | ||||
| Article 24, Volume 44, Issue 2, March 2017, Page 727-740 PDF (2.52 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/zjar.2017.53905 | ||||
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| Authors | ||||
Atiya E. Atiya  ; M. M. Morad; M. A. Tawfik; K. I. Wasfy
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| Agric. Eng. Dept., Fac. Agric., Zagazig Univ., Egypt | ||||
| Abstract | ||||
| Thermochemical conversion process by the gasification to convert the agricultural residues to gaseous fuel using the biomass partial oxidization theory is a very potential as a simple, clean and sustainable method for producing heat and power at rural and remote regions with less contamination compared to the fossil fuel. The biomass gasification process produced a mixture of gases called the producer gas, which contains of carbon dioxide (CO2), carbon monoxide (CO), methane (CH4), hydrogen (H2) and nitrogen (N2). Hence, the aim of this investigation is fabricating and evaluating the performance of a prototype fixed bed downdraft gasifier using corn stover pieces and air as a gasifying agent under different equivalence ratios (ER) of 0.18, 0.24 and 0.36, corn stover particle size (PS) of 1-5, 6-10 and 11-15 mm and working temperature (WT) after throat of 700, 800 and 900°C, takes into consideration the gas composition, temperature profile, the lower heating value, gas yield and gasification efficiency. According to the obtained results, it is recommended to operate the gasifier at ER of 0.24, PS of 1-5mm and working temperature of 900°C, obtained the highest concentration for CO (18.02%), H2 (11.22%), CH4 (3.317) and CnHm (1.751%), gas lower heating value of 5.833 MJ/Nm3 at gasification efficiency of 66.89% and gas yield of 1.70 Nm3/kg. | ||||
| Keywords | ||||
| Biomass gasification; downdraft gasifier; corn stover; producer gas; gasification efficiency | ||||
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