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Adsorption/Desorption Properties of ACF on Toluene and MEK with Operation Condition

공정 조건에 따른 톨루엔 및 MEK에 대한 ACF의 흡·탈착 특성

  • Received : 2011.04.20
  • Accepted : 2011.06.09
  • Published : 2011.06.30

Abstract

Adsorption/desorption characteristics of low concentration methylethylketone(MEK) and toluene vapors in beds packed with activated carbon fibers(ACF) was investigated. Performance of ACF adsorption was characterized by the equilibrium capacity, time to reach equilibrium and desorption efficiency. Experiments were carried out to define the effect of operation variables, such as feed concentration, flow rate, moisture content and bed height. The breakthrough time was shorten with the increase of temperature, flow rate and feed concentration. In addition, an increase of packed height of adsorbents lengthen the breakthrough time. The ACF loaded with MEK and toluene was satisfactorily regenerated by programed heating. It is observed that MEK is more easily removed than toluene at below temperature of $150^{\circ}C$.

휘발성 유기화합물인 저 농도의 MEK와 톨루엔을 사용하여 고정층 반응기에서 활성탄소섬유의 흡착 및 탈착특성을 조사하였다. 활성탄소섬유의 성능은 평형흡수량, 평형에 도달하는 시간, 그리고 탈착효율로 파악하였다. 다양한 실험을 통해 흡착공정에 있어 중요한 공정변수인 유입가스농도, 유량, 수분함량, 흡착제 주입량에 대한 영향을 연구하였다. 흡착층의 온도, 유량 그리고 유입가스농도가 증가할수록 파과시간이 감소하였다. 그리고 흡착제의 충전높이가 증가할수록 파과시간은 길어짐을 알 수 있었다. MEK와 톨루엔으로 흡착된 활성탄소섬유는 일정속도 가열과정을 통해 만족스럽게 재생되었으며 두 휘발성 유기화합물 중 MEK가 $150^{\circ}C$이하의 온도에서 훨씬 손쉽게 재생됨을 알 수 있었다.

Keywords

References

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