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The Effect of Partitioning Porous Plate on Bubble Behavior and Gas Hold-up in a Bench Scale (0.36 m × 22 m) Trayed Bubble Column

벤치스케일(0.36 m × 22 m) 다단형 기포탑에서 다공판이 기포의 거동 및 기체 체류량에 미치는 영향

  • Yang, Jung Hoon (Clean Coal Center, Korea Institute of Energy Research) ;
  • Hur, Young Gul (Clean Coal Center, Korea Institute of Energy Research) ;
  • Lee, Ho-Tae (Clean Coal Center, Korea Institute of Energy Research) ;
  • Yang, Jung-Il (Clean Coal Center, Korea Institute of Energy Research) ;
  • Kim, Hak-Joo (Clean Coal Center, Korea Institute of Energy Research) ;
  • Chun, Dong Hyun (Clean Coal Center, Korea Institute of Energy Research) ;
  • Park, Ji Chan (Clean Coal Center, Korea Institute of Energy Research) ;
  • Jung, Heon (Clean Coal Center, Korea Institute of Energy Research)
  • 양정훈 (한국에너지기술연구원 청정석탄센터) ;
  • 허영걸 (한국에너지기술연구원 청정석탄센터) ;
  • 이호태 (한국에너지기술연구원 청정석탄센터) ;
  • 양정일 (한국에너지기술연구원 청정석탄센터) ;
  • 김학주 (한국에너지기술연구원 청정석탄센터) ;
  • 천동현 (한국에너지기술연구원 청정석탄센터) ;
  • 박지찬 (한국에너지기술연구원 청정석탄센터) ;
  • 정헌 (한국에너지기술연구원 청정석탄센터)
  • Received : 2011.09.30
  • Accepted : 2011.12.05
  • Published : 2012.06.01

Abstract

The gas hold-up has a strong relationship with the size distribution and rising velocities of bubbles in a bubble column. Therefore, many previous researchers have studied on the hydrodynamics focusing on the bubble size variation in bubble column. In this study, the bubble behavior was influenced by partitioning porous plates installed at a certain height in a trayed bubble column. The gas hold-up was increased in non-sparging region (H/D > 5) as well as sparging region. We identified the effect of the partitioning porous plate using three trayed bubble columns with different reactor geometries. Furthermore, the bubble break-up frequency and size distribution were observed before and after individual bubbles penetrated through the plate. The arrangement of the plates was also investigated using a 0.15-m-in-diameter bubble column. Based on the result, we applied this design concept to a 0.36-m-in-diameter, 22 m tall trayed bubble column and identified the effect of the partitioning porous plate on the gas hold-up increase.

Acknowledgement

Supported by : 지식경제부

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