Korean Journal of Chemical Engineering

The Korean Institute of Chemical Engineers (한국화학공학회)
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Gasification of bamboo carbon with molten alkali carbonates

  • Lee, Choong-Gon (Department of Chemical Engineering, Hanbat National University) ;
  • Hur, Ho (Department of Chemical Engineering, Hanbat National University)
  • Received : 2010.11.13
  • Accepted : 2011.01.19
  • Published : 2011.07.01
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Abstract

Solid carbon can be used as a fuel in the direct carbon fuel cell (DCFC). The chemical oxidation of carbon with alkali carbonates was investigated in this work. Decreasing the weight ratio of carbon to carbonate from 5 g : 5 g to 5 g : 20 g had an insignificant effect on the amount and concentration of gases. However, changing the amounts from 5 g : 5 g to 20 g : 20 g tripled the total amount of gases produced with similar gas compositions. The gas compositions ranged from 62.2-67.5 mol% CO, 13.9-14.7 mol% $H_2$, and 5.7-16.8 mol% $CO_2$ at $800^{\circ}C$. Thus CO was the dominant gas species in the conditions. With increasing temperature, CO generation was activated, especially over $700^{\circ}C$. The carbonate species did not affect carbon oxidation. Steam was supplied to the carbon and carbonate mixture at a fixed flow rate of $N_2$ or air. $H_2$ was the highest composition at both cases.

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Acknowledgement

Supported by : National Research Foundation of Korea (NRF)

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