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고분자 흡착제를 이용한 MEK의 회수에 관한 연구

Recoverer of MEK with Polymer Adsorbent

이화웅 나광삼 문일 송형근 나병기

Lee H Na K Moon I Song HK Na BK

HWAHAK KONGHAK, April 1999, 37(2), 276-283(8), NONE

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Abstract

고정층 흡착장치를 이용하여 유기용매인 MEB(Methyl Ethyl Ketone)를 회수하기 위한 목적으로 수처리용으로 개발된 고분자 흡착제인 SP850을 기상 흡착계에 적용하여 흡착 및 탈착에 관계된 변수들을 변화시키면서 실험을 수행하였다. 여러 농도에 대한 파괴실험을 통해 흡착농도에 따른 흡착량을 측정하여 흡착등온선을 얻을 수 있었으며 MEK의 흡착 특성을 파악할 수 있었다. 흡착법을 이용한 용매의 회수방법에서 가장 중요한 단계는 탈착과정이므로 흡착된 용매를 최대한 회수하기 위하여 실험변수를 변화시키면서 탈착 및 회수량을 측정하였다. 실험결과, 탈착량은 퍼지가스의 유량이 많을수록, 탈착압력이 낮을수록, 퍼지가스의 온도가 높을수록, 흡착질의 용매 농도가 높을수록 증가함을 알 수 있었고, 또한 흡착탑 외벽을 가열하는 경우가 탈착량이 많았다. 회수에는 반드시 진공이 필요하였으며 퍼지가스의 온도가 높을수록 큰 회수율을 보였다. 그러나 회수랑은 탈착량보다 항상 작은 값을 나타냈는데 이는 응축기의 규모와 온도에 따른_x000D_ 영향으로써 응축기의 조건이 회수에 큰 영향을 줌을 알 수 있었다.

The experimental study was performed to recover the organic solvent, MEK(Methyl Ethyl Ketone), and to examine the effect of experimental variables on adsorption, desorption and recovery by using feed bed column. For this purpose, the polymer adsorbents SP850, which was developed for water treatment was used. From breakthrough experiments with various feed concentrations, isotherms were obtained and the adsorption characteristics of MEK were understood. The recovered amount of MEK was measured under various experimental conditions because the desorption step was the most important step in improving the performance of solvent recovery process. From the experimental results, desorbed amount of MEK was proportional to the purge rate, the temperature of purge gas, and the concentration of adsorbent, while it was inversely proportional to the desorption pressure. Desorption of MEK was accelerated when the wall of adsorption column was heated. It was necessary to apply a vacuum during the desorption step. The recovered amount of MEK was always smaller than the desorbed amount of MEE The capacity of condenser and the temperature of condenser fluid had a great effect on recovery of solvent.

Keywords

Solvent Recovery MEK Adsorption Desorption. Polymer Adsorbent

References

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