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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 August 14, 2017
Accepted November 21, 2017

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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핵융합 배가스 중 CQ4와 Q2O 처리공정 제안 및 HAZOP 분석

Process Suggestion and HAZOP Analysis for CQ4 and Q2O in Nuclear Fusion Exhaust Gas

정우찬^† 정필갑 김정원 문흥만 장민호¹ 윤세훈¹ 우인성²

Woo-Chan Jung^† Pil-Kap Jung Joung-Won Kim Hung-Man Moon Min-Ho Chang¹ Sei-Hun Yun¹ In-Sung Woo²

대성산업가스(주) 초저온연구소, 15434 경기도 안산시 단원구 산단로 128 ¹국가핵융합연구소, 34133 대전광역시 유성구 과학로 169-148 ²인천대학교 안전공학과, 22012 인천광역시 연수구 아카데미로 119

Daesung Cryogenic Research Institute, Daesung Industrial Gases Co., Ltd., 128, Sandan-ro, Danwon-gu, Ansan-si, Gyeonggi-do, 15434, Korea ¹National Fusion Research Institute, 169-148, Gwahak-ro, Yuseong-gu, Daejeon, 34133, Korea ²Department of Safety Engineering, Incheon National University, 119, Academy-ro, Yeonsu-gu, Incheon, 22012, Korea

chan@gastopia.co.kr

Korean Chemical Engineering Research, April 2018, 56(2), 169-175(7), 10.9713/kcer.2018.56.2.169 Epub 5 April 2018

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Abstract

본 연구는 핵융합 배가스 중 삼중수소가 포함된 화합물인 메탄(CQ4) 및 물(Q2O)로부터 수소동위원소를 회수하기 위한 공정에 관한 것이다(Q는 수소, 중수소, 삼중수소). 수증기-메탄 개질반응과 수성가스 전환반응을 이용하여 CQ4와 Q2O를 Q2로 변환시키고, 후속하는 팔라듐 분리막으로 생성된 Q2를 회수한다. 본 연구에서는 CQ4 및 Q2O 중 하나의 물질인 CH4 및 H2O로부터 수소 회수를 위해 촉매반응기, 팔라듐 분리막, 순환펌프로 구성된 순환루프를 적용하였다. 촉매반응온도 및 순환유량을 변화시켜가며 CH4 및 H2O의 전환율을 측정하였다. CH4 중 수소 회수는 촉매반응온도 650 °C, 순환유량 2.0 L/min 조건에서 99% 이상의 CH4 전환율을 확인하였고, H2O 중 수소 회수는 촉매반응온도 375 °C, 순환유량 1.8 L/min 조건에서 96% 이상의 H2O 전환율을 확인하였다. 이와 더불어, 향후 핵융합 실증로(K-DEMO)에서의 CQ4 발생량을 예측하고, 이에 대한 처리공정을 제안하였으며, HAZOP (Hazard and Operability) 분석을 실시하여 공정의 위험요소와 운전상의 문제점을 도출하고 해결방안을 제시하였다.

This study deals with a process for the recovery of hydrogen isotopes from methane (CQ4) and water (Q2O) containing tritium in the nuclear fusion exhaust gas (Q is Hydrogen, Deuterium, Tritium). Steam Methane Reforming and Water Gas Shift reactions are used to convert CQ4 and Q2O to Q2 and the produced Q2 is recovered by the subsequent Pd membrane. In this study, one circulation loop consisting of catalytic reactor, Pd membrane, and circulation pump was applied to recover H components from CH4 and H2O, one of CQ4 and Q2O. The conversion of CH4 and H2O was measured by varying the catalytic reaction temperature and the circulating flow rate. CH4 conversion was 99% or more at the catalytic reaction temperature of 650 °C and the circulating flow rate of 2.0 L/min. H2O conversion was 96% or more at the catalytic reaction temperature of 375 °C and the circulating flow rate of 1.8 L/min. In addition, the amount of CQ4 generated by Korean Demonstration Fusion Power Plant (K-DEMO) in the future was predicted. Then, the treatment process for the CQ4 was proposed and HAZOP (hazard and operability) analysis was conducted to identify the risk factors and operation problems of the process.

Keywords

Fusion Hydrogen Isotopes Steam Methane Reforming Water Gas Shift Pd membrane K-DEMO HAZOP

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