International Scientific Journal

Thermal Science - Online First

online first only

Air and oxygen gasification simulation analysis of sawdust

Gasification is the conversion process of low-grade solid fuel into gaseous fuel by thermo-chemical reactions. In this paper air gasification and oxygen gasification simulation of sawdust is carried out using FACTSAGE 6.3 software. The effect of temperature and equivalence ratio (Φ) on producer gas composition is analysed. Combustible gas compositions (H2, CO and CH4) are found out at different operating conditions for air and oxygen gasification separately. Temperature range is 200-1200°C and Φ value varied from 0.3-0.6. Gas heating values (HHV & LHV) carbon conversion efficiency (CCE) and cold gas efficiency (CGE) are calculated. In air gasification, maximum HHV of 5.96 MJ/Nm3 is reached at 700°C for Φ=0.3 and in oxygen gasification, 9.85 MJ/Nm3 is attained at 800°C and Φ=0.3. The maximum cold gas efficiency of 84.37 and 84.73% reached by air and oxygen gasification respectively at 1200°C for Φ=0.3.
PAPER REVISED: 2018-02-27
PAPER ACCEPTED: 2018-03-20
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