A study on wood gasification for low-tar gas production

S.c Bhattacharya, A.H.Md Mizanur Rahman Siddique and Hoang-Luong Pham

Energy, 1999, vol. 24, issue 4, 285-296

Abstract: We present results of an experimental study on two-stage wood gasification and attempts to reduce the tar content of the gas. Increasing the wood-chip moisture content resulted in an increase of CO2 and H2 but a decrease of the CO concentration without significantly affecting the tar content in the producer gas. For a particular primary air flow rate, an increase in the secondary air flow of the two-stage gasifier resulted in decrease of the tar content and the CO2 and H2 concentrations while that of CO increased. A charcoal gasifier and a floating-drum gas-storage system were coupled to a two-stage wood gasifier. The tar content of the product gas was in the range 19–34 mg/Nm3 for a charcoal gasifier coupled to a two-stage wood gasifier. With a floating-drum gas-storage system and a 3.5 h retention time, the tar content was reduced to 9.24 mg/Nm3, which is 85% less than that obtained by using the a two-stage wood gasifier alone.

Date: 1999
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Citations: View citations in EconPapers (18)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:24:y:1999:i:4:p:285-296

DOI: 10.1016/S0360-5442(98)00091-7

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