Investigation of syngas production by gasifier with axial circulating flue gas

Name: T. Poowadin

Organization : Rajamangala University of Technology Isan. Department of Mechanical Engineering

Email : poowadin@yahoo.com

Name: M. Polsongkram

Organization : Rajamangala University of Technology Isan. Department of Mechanical Engineering

Name: W. Apisitpinyo

Organization : Rajamangala University of Technology Isan. Department of Mechanical Engineering

Name: P. Poowadin

Organization : Rajamangala University of Technology Isan. Department of Mechanical Engineering

Name: P. Khantikomol

Organization : Rajamangala University of Technology Isan. Department of Mechanical Engineering

ThaSH: Synthesis gas -- Manufacture

ThaSH: Carbon monoxide

ThaSH: Carbon dioxide

ThaSH: Biomass gasification

Abstract: The syngas characteristics produced by the gasifier with axial core flue gas circulating kiln was proposed experimentally. The updraft gasifier with axial core was constructed to produce the syngas purposed to reduce the tar. The gasifier was cylindrical shape and made of steel with 140 cm high and 60 can base diameter The kiln's capacity was 0.41 m3 with installing an axial core flue gas circulating tube in the center line of the gasifier to change the direction of syngas. Expect that syngas comeback to high temperature zone for changing tar formation or conversion to be gas. In the present study, the eucalyptus wood chip 4, 8, and 12 kg with the moisture content 16 percent were examined. The air flow rate was 0.0033 m3/s. Several type-K thermocouples were employed to measure the temperatures at preheat, combustion, reduction, pyrolysis, drying, and gas outlet zone. The results showed that the syngas production obtained from the gasifier with the core consisted of carbon monoxide (CO) 11 percent, carbon dioxide (CO2) 13 percent, hydrogen(H2) 4.6 percent, methane (CH4) 2.3 percent, oxygen (O2) 2 percent and liquid product 3 percent. In comparison with normal gasifier without the core, it was found that CO production from the gasifier with the core was higher than the gasifier without the core about 25 percent and the amount of liquid product decreased about 47.23 percent. Other gases, however, were almost same. Due to the installation of the core, the syngas was heated for a long time to produce more CO. Some of tar may was destroyed become CO. Furthermore it showed that the heating value of syngas production for gasifier with core was higher than gasifier without core about 10 percent. This result corresponded to the increased. of carbon monoxide (CO) content.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2018

Modified: 2025-07-01

Issued: 2025-07-01

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BibliograpyCitation : In Thammasat University Faculty of Engineering. The 9th TSME International Conference on Mechanical Engineering 2018 (TSME-ICoME9) (pp.621-627) Pathum Thani : Thammasat University

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