Transactions of the Korean hydrogen and new energy society (한국수소및신에너지학회논문집)

The Korean Hydrogen and New Energy Society (한국수소및신에너지학회)
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Spray Characteristics of a Coal Slurry with Liquid Carbon Dioxide

고압 저등급탄-이산화탄소 슬러리 분무특성에 관한 연구

  • KIM, CHANGYEON (Grad. School of Pusan National University) ;
  • KIM, HAKDUCK (Grad. School of Pusan National University) ;
  • SONG, JUHUN (School of Mechanical Engineering, Pusan National University Univ.)
  • Received : 2015.08.04
  • Accepted : 2015.08.30
  • Published : 2015.08.30
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Abstract

There is potential method to utilize the liquid carbon dioxide ($LCO_2$) in coal gasification plants. The $LCO_2$ could be used to effectively transport coal particles instead of conventional carrier such as liquid water ($H_2O$) particularly in wet-fed gasifier. However, there is a lack of fundamental study on the atomization behavior of $LCO_2$ coal slurry under high pressure condition. In this study, the flashing spray characteristics of a coal mixture with $LCO_2$ was examined during a throttling process by using a flow visualization system. The spray of coal water slurry which is in the Rayleigh-type break up mode was significantly different. This difference indicates that the coal water slurry did not effectively transport the coal, as compared to $LCO_2$ coal slurry.

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References

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