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포름산 - 물 - 염화마그네슘계의 등압 기액 상평형 연구
윤세훈(Sei Hun Yun),김영철(Yeong Cheol Kim),이의수(Euy Soo Lee),김철(Chul Kim) 한국화학공학회 1997 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.35 No.2
Isobaric vapor-liquid equilibria for formic acid-water-magnesium chloride at different charge rate of magnesium chloride using f(wt% of H₂O)/(wt% of MgCl₂) factor has been measured at an atmospheric pressure(760 mmHg). In the thermodynamic analysis of the vapor-liquid equilibria, the system has been treated as a pseudo-binary system assuming that the salt was dissolved only in the water in ionic form. The dimerization effect of formic acid in vapor phase has been taken into account to estimate the activity coeffecients of pseudo-binary components. Both changes of activity coefficients and relative volatilities have been studied with respect to f values of 3.2, 2.8 and 2.0 in this pseudo-binary system.
연구로 2호기 중성자 조사 흑연의 Wigner 에너지 방출 특성 연구
정경환,윤세훈,이동규,정종헌,이근우,Jeong Gyeong-Hwan,Yun Sei-Hun,Lee Dong-Gyu,Jung Chong-Hun,Lee Keun-Woo 한국방사성폐기물학회 2006 방사성폐기물학회지 Vol.4 No.3
Characteristics of heat release process, while the Wigner energy was drawn off the graphite during DSC(Differential Scanning Calorimenter) measurement as an example of annealing process which is one of release methods of Wigner energy that is contained in the irradiated graphite, was studied. Linear temperature rise method in DSC operation was selected to estimate the total Wigner energy content and the heat release rate of each graphite samples, which were located in several positions in the thermal column in KRR-2 research reactor. As an annealing process in DSC operation Wigner energy of the irradiated graphite samples were totally released by heat supplying to the graphite from room temperature to $500^{\circ}C$, in DSC. Characteristics of Wigner energy release from the graphite sample was well correlated with the various activation energy model of the kinetic equation.
송규민 ( Kyu Min Song ),윤세훈 ( Sei Hun Yun ),정흥석 ( Hong Suk Chung ),장민호 ( Min Ho Chang ),강현구 ( Hyun Goo Kang ),조승연 ( Seung Yen Cho ),구대서 ( Dae Seo Koo ),정도연 ( Do Yeon Jeong ),정동유 ( Dong You Jung ) 한국공업화학회 2010 응용화학 Vol.14 No.1
A rectangular type-bed of tritium storage was designed, fabricated and inspected. The storage bed was fabricated by brazing the tray plate, heater tube and helium loop. Brazing enables improved heat transfer for heating and cooling the plates. Feed through connections of the heater line and thermocouple line of the primary vessel enable the prevention of tritium leakage into the secondary vessel. The circumferential thermal reflectors and circular plate-type thermal reflectors for the primary vessel were fabricated to reduce heat transfer from the primary vessel to the secondary vessel, and thermal loss. Vacuum & leak inspections on the primary & secondary vessels for the fabricated rectangular tray-type bed were performed. These results were proved to have no leaks on the tubes of the primary & secondary vessels.
송규민 ( Kyu Min Song ),손순환 ( Soon Hwan Sohn ),정홍석 ( Hong Suk Chung ),윤세훈 ( Sei Hun Yun ),정기정 ( Ki Jung Jung ) 한국화학공학회 2012 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.50 No.4
International Thermonuclear Experimental Reactor (ITER) will be constructed in 2019 according to the JIA (Joint Implementation Agreement) of 7 countries. The ITER fusion fuel cycle consists of fusion vacuum vessel, tritium plant and fuelling system. The tritium plant provides the functions of storage, delivery, separation, removal and recovery of the deuterium and tritium used as fusion fuels for the ITER. The tritium plant systems supply deuterium and tritium from external sources and treat all tritiated fluids from ITER operation through Storage and Delivery System (SDS), Tokamak Exhaust Processing (TEP), Isotope Separation System (ISS), Water Detritiation System & Atmosphere Detritiation System (WDS & ADS) and Analysis System (ANS). In this paper, the functions and design requirements of the major systems in the tritium plant and the status of R&D are described. Korean party is developing the SDS for ITER tritium plant and partially attaining the WDS technology through the construction and operation experience of the Wolsong Tritium Removal Facility (WTRF). Now it is expected that researchers in other fields such as chemical engineering take part in the development of upcoming technologies for ISS and TEP.
핵융합 배가스 중 CQ<sub>4</sub>와 Q<sub>2</sub>O 처리공정 제안 및 HAZOP 분석
정우찬 ( Woo-chan Jung ),정필갑 ( Pil-kap Jung ),김정원 ( Joung-won Kim ),문흥만 ( Hung-man Moon ),장민호 ( Min-ho Chang ),윤세훈 ( Sei-hun Yun ),우인성 ( In-sung Woo ) 한국화학공학회 2018 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.56 No.2
This study deals with a process for the recovery of hydrogen isotopes from methane (CQ<sub>4</sub>) and water (Q<sub>2</sub>O) 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 CQ<sub>4</sub> and Q<sub>2</sub>O to Q<sub>2</sub> and the produced Q<sub>2</sub> 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 CH<sub>4</sub> and H<sub>2</sub>O, one of CQ<sub>4</sub> and Q<sub>2</sub>O. The conversion of CH<sub>4</sub> and H<sub>2</sub>O was measured by varying the catalytic reaction temperature and the circulating flow rate. CH<sub>4</sub> conversion was 99% or more at the catalytic reaction temperature of 650 ℃ and the circulating flow rate of 2.0 L/min. H<sub>2</sub>O conversion was 96% or more at the catalytic reaction temperature of 375 ℃ and the circulating flow rate of 1.8 L/min. In addition, the amount of CQ<sub>4</sub> generated by Korean Demonstration Fusion Power Plant (K-DEMO) in the future was predicted. Then, the treatment process for the CQ<sub>4</sub> was proposed and HAZOP (hazard and operability) analysis was conducted to identify the risk factors and operation problems of the process.
NAC-5의 Sensitizer로서의 정량적 감광특성 연구
윤세훈,오성상,이의수 한국공업화학회 2003 응용화학 Vol.7 No.1
NAC-5(Naphthoquinone-1,2-diazide sulfonyl chloride), as an additive,was applied to enhance the photosensitive rate in composing a positive type of photoresist with naphthoquinone diazide derivative. Quantitative unit of energy absorotion of NAC-5 based on molar weight using 365 nm optical pattern generator was measured to estimate the availability as a role of photoinitiator or an improvement agent for photochemical reaction. Comparing with the ester compound of NAC-5 with THBP(trihydroxybenzophenone) the rate of energy absorption of NAC-5 in the given range of UV light exposure was greater then that of THBP-ester of naphthoquinone diazide. Conclusively, NAC-5 was regarded as superior in photosensitivity.