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Description
This paper presented the investigation into the production of H2 and CO through continuous feed CO2/O2 gasification utilizing coconut shell char (CSC) as raw material, the coal was pulverized into powder for the ease of feeding and decomposition. The nitrogen used to regulate the oxygen percentage in the system and the mixture of CO2/O2 gas served as gasification medium, the mixed gas fed within range of 2-4 L/min for the Boudouard reaction to occurred. The experiments were conducted at temperature of 700 and 800 °C with the holding time of 30 minutes, the syngas produced are collected every 5 minutes via gas bag and the composition of syngas produced was analyzed for the percentage of H2, CO, CO2 and CH4.
The result indicated that the use of CSC as raw material products accounted for Syngas products was 4.63-8.92% of the total. Gasification products yielded 0.300-4.447% for H2 0.023-2.897% for CO 0.050-1.897% for CO2 and 0.000-0.597% for CH4 at 700 °C, while at 800 °C products yielded 0.01-4.59% for H2 1.59-7.31% for CO 0.725-4.255% for CO2 and 0.000-0.595% for CH4. The lower heating value of syngas is within the range of 49.99-85.18 MJ/Nm3 and energy recovery of syngas ranges of 15.00-25.56 kW. The mass and energy balance analysis showed the whole process of H2 and CO production for the subsequent H2 separation process.
