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Language: korean

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received April 30, 2010
Accepted July 14, 2010

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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병류와 향류 흐름에서 수소분리를 위한 Pd 분리막 시스템의 모델링 및 모사

Modelling and Simulation of H2 separation in Pd Membrane System with Co-current and Current-current Flow

이용 노승효 오민^†

Yong Yi Seunghyo Noh Min Oh^†

한밭대학교 화학공학과, 305-719 대전시 유성구 덕명동 산 16-1

Department of Chemical Engineering, Hanbat National University, San 16-1, Dukmyung-dong, Yuseong-gu, Daejeon 305-719, Korea

minoh@hanbat.ac.kr

Korean Chemical Engineering Research, October 2010, 48(5), 598-602(5), NONE Epub 17 November 2010

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Abstract

본 논문에서는 다량의 수소를 포함한 다성분계 원료가스로부터 수소를 분리해 내는 분리막 시스템에 대하여 CFD 모델링과 모사를 수행하였다. 분리막 시스템은 환형 실린더 타입으로 원료가스의 유입을 위한 외부 lumen side와 sweeping gas가 유입되는 내부 permeation side로 구성된다. Lumen side의 운전온도와 압력은 374 ℃, 7 기압 permeation side의 sweeping gas의 도입 온도와 압력은 374 ℃, 3기압이며, 이러한 조건에서 운전이 가능한 Pd 분리막을 사용하였다. Sweeping gas의 흐름 방향에 따른 향류 및 병류 흐름에 대하여 각각 CFD 모사를 수행하였으며 수소 몰분율, 수소분압, 수소 플럭스 등에 대하여 결과를 비교하였다. 또한 lumen side의 원료가스 도입유속을 변화시켜 모사를 수행하고, 이에 따른 막분리 시스템의 효율을 비교하고 이에 대하여 고찰하였다.

In this paper, we carried out CFD modelling and simulation for the membrane system to separate H2 gas from the multi-component feed gas. The membrane system is of the annulus tubular type consisting of the external lumen side for the feed gas and the internal permeation side for the sweeping gas. The operating temperature and pressure of the lumen side inlet flow are 374 ℃ and 7 bar respectively and those of the sweeping gas are 374 ℃ and 3 bar, and considering these conditions, Pd membrane system was employed. CFD simulations were performed for_x000D_ the co-current flow and counter-current flow membrane system based on the flow directions between the feed and the sweeping gas. Comparisons and discussions were made for the H2 partial pressure, H2 mole fraction and H2 flux for both cases. Furthermore, we executed CFD simulations for the each case of the various inlet flow rates of the feed gas at the lumen side. Accordingly, we reviewed the effects of the flow rate and residence time on the performance of the membrane system.

Keywords

Pdmembrane h2 Separation Co-Current and Counter-Current Modeling Simulation

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