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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 2, 2008
Accepted June 28, 2008

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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PEMFC용 플라즈마 개질 시스템의 수소 생산

Hydrogen Production for PEMFC Application in Plasma Reforming System

양윤철 전영남^†

Yoon Cheol Yang Young Nam Chun^†

조선대학교 환경공학과 BK21 바이오가스 기반 수소생산 사업팀, 501-759 광주광역시 동구 서석동 375

Department of Environmental Engineering, BK21 Team for Hydrogen Production, Chosun University, 375 Dong-gu, Seosuk-dong, Gwangju 501-759, Korea

Korean Chemical Engineering Research, October 2008, 46(5), 1002-1007(6), NONE Epub 10 November 2008

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Abstract

이 논문의 목적은 PEMFC 작동을 위한 플라즈마 개질 시스템의 최적 조건을 연구한 것이다. 플라즈마 개질 반응기는 니켈 촉매 반응기와 동시에 사용하여 수소 생성을 증대하였다. 또한 수성가스 전환 반응기 및 선택적 산화 반응기는 연료전지의 촉매 피독에 영향을 주는 일산화탄소의 농도를 10 ppm 이하로 줄이기 위하여 제작되었다. 플라즈마 개질기에서 최대 수소생산 조건은 S/C 비 3.2, 메탄 2.0 L/min, 촉매반응기 온도는 700±5 oC 그리고 입력전력 900 W이다. 이때의 합성가스의 농도는 H2 70.2%, CO 7.5%, CO2 16.2%, CH4 1.8% 이다. 수소 수율, 수소 선택도 그리고 메탄 전환율는 각각 56.8%, 38.1%, 92.2%이다. 에너지 효율과 에너지 요구량은 37.0%, 183.6 kJ/mol 이다. 추가적으로 CO2/CH4 비 실험을 진행하였다. 또한 수성가스 전환 반응기는 플라즈마 개질 반응기의 최적조건으로 실험을 진행하였_x000D_ 으며, 출구 농도는 H2 68.0%, CO 337 ppm, CO2 24.0%, CH4 2.2%, C2H4 0.4%, C2H6 4.1% 이다. 이때의 선택적 산화 반응기의 실험결과는 H2 51.9%, CO 0%, CO2 17.3%를 나타냈다.

The purpose of this paper studied the optimal hydrogen production condition of plasma reforming system to operate the PEMFC. Plasma reforming reactor used with Ni catalyst reactor at the same time, So H2 concentration increased. Also the WGS and PrOx reactor were designed to remove CO concentration under 10 ppm, because CO has effect on catalyst poisoning of PEMFC. The maximum H2 production condition in plasma reforming system was S/C ratio 3.2, CH4 flow rate 2.0 L/min, catalytic reactor temperature 700±5 oC and input power 900 W. At this time, the concentration of produced syngas was H2 70.2%, CO 7.5%, CO2 16.2%, CH4 1.8%. The hydrogen yield, hydrogen selectivity and CH4 conversion rate were 56.8%, 38.1% and 92.2% respectively. The energy efficiency and specific energy requirement were 37.0%, 183.6 kJ/mol. In additional, The experiment of CO2/CH4 ratio proceeded. Also WGS reactor experiment was proceeding on optimum condition of plasma reactor and the exit concentration were H2 68%, CO 337 ppm, CO2 24.0%, CH4 2.2%, C2H4 0.4%, C2H6 4.1%. At this time, experiment result of PrOx reactor were H2 51.9%, CO 0%, CO2 17.3%.

Keywords

Glidarc Hydrogen Plasma Reforming CO Shift PEMFC

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