Clean Technology (청정기술)

The Korean Society of Clean Technology (한국청정기술학회)
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Dynamic Adsorptive Characteristics of Dual Adsorbents Bed Packed with Activated Carbon and Zeolite 13X for Benzene Adsorption

활성탄 및 제올라이트 13X를 충진한 이중흡착층 내에서 벤젠의 동적흡착 특성

  • Kang, Sung-Won (Department of Chemical Engineering, Hongik University) ;
  • Suh, Sung-Sup (Department of Chemical Engineering, Hongik University) ;
  • Min, Byung-Hoon (Department of Chemical Engineering, University of Suwon)
  • 강성원 (홍익대학교 화학공학과) ;
  • 서성섭 (홍익대학교 화학공학과) ;
  • 민병훈 (수원대학교 화학공학과)
  • Received : 2004.06.15
  • Accepted : 2004.07.18
  • Published : 2004.09.01
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Abstract

Benzene adsorption experiment was carried out for activated carbon and zeolite 13X adsorbents. Single column and dual column packed with two adsorbents were used to investigate the dynamic adsorptive characteristics. Effect of feed flow rate on the breakthrough curve was not significant. Specific adsorption amount of benzene for activated carbon was larger than that for zeolite 13X. On the contrary, adsorption amount per column volume was larger for zeolite 13X column because the density of zeolite 13X was larger. In the dynamic experiment using dual adsorbents column, length of mass transfer zone was changed by the feed direction. Breakthrough time was longer and breakthrough curve was sharper when activated carbon was packed in feed inlet and zeolite 13X was packed in column outlet. Also breakthrough time and breakthrough curve slope were affected by the packing ratio of the two adsorbents.

벤젠에 대한 흡착실험이 활성탄과 제올라이트 13X 흡착제에 대하여 수행되었다. 단일 흡착탑과 두 흡착제로 충진된 이중 흡착탑에서 동적흡착특성이 조사되었다. 원료의 유량은 파과시간에 큰 영향을 주지 않았다. 활성탄에 대한 벤젠의 비흡착량이 제올라이트 13X보다 큰 반면, 제올라이트 13X의 밀도가 더 크게 때문에 흡착탑 부피당 흡착량은 제올라이트 13X가 더 컸다. 이중흡착제로 충진된 흡착탑에 대한 동적실험에서 물질전달영역의 길이가 원료의 흐름방향에 따라 달라졌다. 원료 주입구에 활성탄이 충진되고 탑의 출구에 제올라이트 13X가 충진될 때 파과시간은 더 길고 파과곡선은 더 날카롭게 얻어졌다. 또한 두 흡착제의 충진비율에 따라서 파과시간과 파과곡선의 기울기가 영향을 받았다.

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