Design and experimental study of pilot scale throat-less downdraft gasifier fed by rice husk and wood sawdust

Autor: A. A. P. Susastriawan, Harwin Saptoadi, Purnomo
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Zdroj: International Journal of Sustainable Energy, Vol 37, Iss 9, Pp 873-885 (2018)
Druh dokumentu: article
ISSN: 1478-6451
1478-646X
14786451
DOI: 10.1080/14786451.2017.1383992
Popis: In this work, pilot scale throat-less downdraft gasifier is fabricated and tested on rice husk and blend of rice husk-sawdust. The test aims to investigate effect of equivalence ratio on temperature profile, propagation front (flame propagation rate, bed movement rate, and effective propagation rate), and performance of the gasifier (composition of producer gas, heating value of producer gas, and thermal efficiency of the gasifier). Equivalence ratio investigated are 0.15, 0.20, and 0.25, while the blend ratio is 1:1 by mass. The results show that axial temperatures in the reactor surge faster with increasing equivalence ratio during the rice husk gasification and the blend gasification. Typically, flame propagation rate, bed movement rate, and effective propagation rate improve with rising equivalence ratio from 0.15 to 0.25. The best higher heating values and thermal efficiencies are obtained at equivalence ratio of 0.2 and 0.15 for the rice husk gasification and the blend gasification, respectively.
Databáze: Directory of Open Access Journals
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