| Issue |
Korean Chemical Engineering Research,
Vol.46, No.2, 414-422, 2008
Vol.46, No.2, 414-422, 2008
다성분 혼합 기체로부터 수소 분리를 위한 4-bed PSA 실험과 전산 모사
Experiment and Simulation of 4-bed PSA for Hydrogen Separation from Multi-Component Mixture Gases
활성탄과 제올라이트에 대한 H2, CH4, CO, CO2에 대한 흡착평형 실험을 정적부피법에 의해 수행하였다. 활성탄과 제올라트를 이용한 4탑 PSA 공정을 통하여 다성분 혼합기체(H2 72.2%, CH4 4.06%, CO 2.03%, CO2 21.6%)로부터 수소를 분리하는 연구를 수행하였다. 흡착평형 실험결과 각각의 기체들에 대하여 dual-site langmuir(DSL) 모델이 잘 예측을 하였으며, 활성탄과 제올라이트의 충전비율에 따른 파과특성을 살펴본 결과 최적의 활성탄 층의 높이는 전체 탑 길이 80 cm 중 55 cm로 나타났다. PSA 공정에서 공정 변수인 총 주기시간(Tc), 세정기체 공급압력차(ΔP) 그리고 흡착압력이 공정효율에 미치는 영향을 실험과 전산모사를 통해 그 결과를 비교하였다.
Adsorption experiments for H2, CH4, CO, CO2 on activated carbon and zeolite 5A were performed by static volumetric method. A 4-bed pressure swing adsorption (PSA) process was to study separation of hydrogen from multi-component mixture gases (H2 72.2%, CH4 4.06%, CO 2.03%, CO2 21.6%). Dual-site langmuir (DSL) isotherm showed good or fair agreement with the experimental results. The optimum height of activated carbon layer was 55 cm with breakthrough results on the packing ratio of activated carbon to zeolite 5A. In PSA process, the effects of the process parameters such as total cycle time (Tc), ΔP at the provide purge step and adsorption pressure on the PSA performance were studied experimentally and theoretically.
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