Journal
JOURNAL OF MATERIAL CYCLES AND WASTE MANAGEMENT
Volume 20, Issue 2, Pages 823-831Publisher
SPRINGER
DOI: 10.1007/s10163-017-0642-0
Keywords
Gasification; Biomass; Secondary oxidant; Tar; Thermal cracking
Categories
Funding
- Korea Ministry of Environment (MOE) as a Waste-to-Energy Technology Development Project''
- Human Resources Development program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korean Ministry of Trade, Industry and Energy [20164030201250]
- Korea Environmental Industry & Technology Institute (KEITI) [ARQ201305016004] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [21A20130011104] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Gasification experiments for sawdust were conducted using a fixed bed reactor at 900 A degrees C by varying the secondary oxidant injection ratio to determine the optimal conditions for tar removal along with the enhancement of gasification efficiency. Secondary oxidant was injected as an oxidant at the top zone of the gasifier in varying ratios of 10-30% of the total amount of oxidant. This method was based on the primary method of tar removal and gasification efficiency improvement by thermal cracking of tar. Various gasification performance parameters were evaluated and tar content was estimated by measuring the fluctuation of weight of the activated carbon filter. The results showed that the concentration of tar in the producer gas decreased by injecting the secondary oxidant, even though syngas yield decreased. The recycling potential of the char produced in the gasification experiments was also assessed with the purpose of utilizing char as an adsorbent by determining its surface area and pore volume. The results demonstrated that the char produced from the gasification experiment had similar quality to that of the activated carbon used in this experiment.
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