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The effect of a mixed catalytic system on the fluidized-bed gasification of high-ash coal

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  • Vajpeyi, Meenakshi
  • Dhirendra,
  • Awasthi, S.K.
  • Pandey, G.N.

Abstract

We have studied the effects of K2CO3, Ni(NO3)2, K3[Fe(CN)6], and combinations of K2CO3 and Ni(NO3)2 in different proportions on fluidized-bed gasification of a typical Indian coal containing 36.7% ash and 30.6% fixed carbon. The temperature range covered was 500 through 800 °C. The results indicate that 10% K2CO3 + 1% Ni(NO3)2 at 700 °C yielded a COCO2 ratio of 1.48 and a (CO + H2)CO2 ratio of 3.0. The energy of activation was reduced to 2.02 Kcal/mole and the calorific value increased to 190 Btu/cuft at 700 °C. The catalytic mixture provided enhancement of gasification rate in a single-step reactor.

Suggested Citation

  • Vajpeyi, Meenakshi & Dhirendra, & Awasthi, S.K. & Pandey, G.N., 1986. "The effect of a mixed catalytic system on the fluidized-bed gasification of high-ash coal," Energy, Elsevier, vol. 11(6), pages 563-572.
    • Handle: RePEc:eee:energy:v:11:y:1986:i:6:p:563-572
    DOI: 10.1016/0360-5442(86)90104-0
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