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제올라이트(faujasite)를 이용한 치환탈착공정에서 에탄, 에틸렌의 흡, 탈착 동특성
이지인 ( Ji In Lee ),박종호 ( Jong Ho Park ),범희태 ( Hee Tae Beum ),이광복 ( Kwang Bok Yi ),고창현 ( Chang Hyun Ko ),박성열 ( Sung Youl Park ),이용택 ( Yong Taek Lee ),김종남 ( Jong Nam Kim ) 한국화학공학회 2010 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.48 No.6
Adsorption dynamics of ethane/ethylene mixture gas and desorption dynamics during the displacement desorption with propane as a desorbent in the column filled with faujasite adsorbent were investigated experimentally and theoretically. The simulation that adopted heat and mass balance and an ideal adsorbed solution theory (IAST) for the multicomponent adsorption equilibrium well predicted the experimental breakthrough curves of the adsorption and desorption. At the adsorption breakthrough experiments, roll-ups of ethane increased as the adsorption pressure increased and the adsorption temperature decreased. During the displacement desorption with propane in the column saturated with ethane/ethylene mixture gas, almost 100% of ethylene was obtained for a certain time interval. The adsorption strength of the desorbent greatly affected the adsorption and re-adsorption dynamics of ethylene. The re-adsorption capacity for ethylene has been greatly reduced when iso-propane, which is stronger desorbent than propane, was used as desorbent. It was found from the simulation that the performance of the displacement desorption process would be superior when the ratio of (q ×b) /(q ×b) was 0.83, that is, the adsorption strengths of ethylene and the desorbent were similar.