Next Article in Journal
Exploring the Interplay between CAD and FreeFem++ as an Energy Decision-Making Tool for Architectural Design
Previous Article in Journal
A Critical Analysis of Bio-Hydrocarbon Production in Bacteria: Current Challenges and Future Directions
Article Menu
Issue 10 (October) cover image

Export Article

Open AccessArticle
Energies 2018, 11(10), 2664;

Effects of Oxygen Enrichment in Air Oxidants on Biomass Gasification Efficiency and the Reduction of Tar Emissions

Department of Environmental Engineering, Yonsei University, 1 Yonseidae-gil, Wonju-si 26493, Korea
Author to whom correspondence should be addressed.
Received: 14 August 2018 / Revised: 5 October 2018 / Accepted: 5 October 2018 / Published: 7 October 2018
Full-Text   |   PDF [3487 KB, uploaded 7 October 2018]   |  


This study applied oxygen-enrichment conditions to remove tar (the main problem in biomass gasification) and increase gasification efficiency. Experiments on oxygen-enrichment conditions were conducted at oxygen concentrations of 21%, 25%, 30%, and 35% in oxidants. This was expected to increase the partial oxidation reaction in gasification reactions, thus leading to thermal decomposition of tar in producer gas. The decomposed tar was expected to be converted into syngas or combustible gases in the producer gas. The results were as follows: Tar-reduction efficiency was 72.46% at 30% oxygen enrichment compared to the standard 21% enrichment condition. In addition, the concentrations of syngas and combustible gases in the producer gas tended to increase. Therefore, the 30% oxygen-enrichment condition was optimal, resulting in 78.00% for cold gas efficiency and 80.24% for carbon conversion efficiency. The application of oxygen enrichment into the lab-scale gasification system clearly reduced the concentration of tar and tended to increase some indexes of gasification efficiency, thus suggesting the usefulness of this technique in large-scale biomass gasification operations. View Full-Text
Keywords: biomass; gasification; tar; oxygen enrichment; syngas biomass; gasification; tar; oxygen enrichment; syngas

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Park, S.-W.; Lee, S.-Y.; Jeong, Y.-O.; Han, G.-H.; Seo, Y.-C. Effects of Oxygen Enrichment in Air Oxidants on Biomass Gasification Efficiency and the Reduction of Tar Emissions. Energies 2018, 11, 2664.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top