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배중면(Joongmyeon Bae),배규종(Gyujong Bae) 대한기계학회 2007 대한기계학회 춘추학술대회 Vol.2007 No.10
Pressure drop is an important design parameter for any reactor since it represents an energy loss. The objective of this study is to compare the performance of a packed-bed to a structured catalyst using microchannel. In order to analyze effect on catalyst shape, experiments were carried out with two types catalysts, packed-bed and structured catalyst which has spiral shape. When GHSV increases, the reactor using microchannel catalyst has better performance. The cause of performance difference was analysied. With pressure drop, it represents that microchannel catalyst are suitable for reformer operating high throughput, such as compact reformer.
n-Butane 내부개질시 Ni-YSZ와 Cu-Ceria-YSZ에 대한 탄소침적에 관한 연구
배규종(Bae, Gyu-Jong),배중면(Bae, Joong-Myeon),박광진(Park, Kwang-Jin),김용민(Kim, Yong-Min) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.05
The internal reforming of n-Butane on Ni-YSZ and Cu-Ceria-YSZ was investigated with anode granule at steam to carbon ratio from 0 to 3 and at temperature of 750?C. Although hydrogen production was lager at Ni-YSZ, resistivity for carbon deposition was better at Cu-Ceria-YSZ. These phenomena occur because unwanted side reaction go on with reforming reaction for hydrogen production at Ni-YSZ.
배규종(Bae, Gyu-Jong),박준근(Park, Joon-Geun),배중면(Bae, Joong-Myeon) 한국신재생에너지학회 2007 한국신재생에너지학회 학술대회논문집 Vol.2007 No.06
Currently, many structured catalysts using microchannel are researched to apply to fuel reforming. In this paper, ceramic monolith and metal mesh as structured catalysts are investigated for catalytic autothermal reforming. When GHSV increases, each structured catalyst has better performances(hydrogen production, fuel conversion) than packed bed catalyst for autothermal reforming. The major causes seem to be the elevated heat and mass transfer, gas phase reaction and redistribution of packed bed due to high pressure drop.
고체산화물연료전지 기반 보조전원 시스템 적용을 위한 디젤 자열개질기 설계 향상
배민석(Minseok Bae),배중면(Joongmyeon Bae) 대한기계학회 2018 대한기계학회 춘추학술대회 Vol.2018 No.12
An improved diesel autothermal reformer has been developed to integrate with a low-temperature solid oxide fuel cell stack. The design of the diesel reformer was modified to fulfill the requirements of the fuel cell stack. Sulfur removal components and heat exchangers to enhance stability and improve efficiency are introduced. To match the inlet temperature conditions of the stack, produced hydrogen-rich reformate was re-heated with the additional heat exchangers. Heat integration design between the stack and the reformer was done by thermodynamic calculations. With those improvements, a prototype of the 1 kWe Diesel reformer system has been developed and tested to validate the improvements for the low-temperature SOFC application. In result, 950 W of electricity could be produced with the system.
배규종(Gyujong Bae),강인용(Inyong Kang),임성광(Sungkwang Lim),배중면(Joongmyeon Bae),김주용(Juyong Kim),이찬호(Chanho Lee) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
This study discusses about research efforts of hydrogen generation from hydrocarbon(e.g., diesel, gasoline, natural gas, and LPG), especially, butane reforming by using Autothermal Reforming Reaction (ATR) technology. Several catalysts were selected for butane ATR. Thermodynamic reactor conditions (temperature, O2/C, S/C) are varied and reforming characteristics of 2 catalysts (Pt and Rh on ceramic supports) and 1 commercial catalyst (FCR-HC35) have been examined. To understand reaction behaviors in an ATR reactor comprehensively, temperature profiles of reactor were observed. By mass transfer limitation, fuel conversion decreases when GHSV was increased. Significant temperature variation along the reactor was observed and it was mainly due reaction kinetics difference between exothermic oxidation and endothermic reforming reaction.
PEMFC용 디젤 개질 시스템에서의 일산화탄소 제거 공정 모델링
배민석(Minseok Bae),오지우(Jiwoo Oh),김동연(Dongyeon Kim),배중면(Joongmyeon Bae) 대한기계학회 2015 대한기계학회 춘추학술대회 Vol.2015 No.11
Modeling of diesel reformer system for polymer electrolyte membrane fuel cell (PEMFC) was conducted with Aspen Plus software. In order to meet the carbon monoxide (CO) level requirement of PEMFC, water-gas-shift (WGS) and preferential oxidation (PROX) reactors were introduced with the auto-thermal reforming (ATR) reactor. WGS and PROX reactors were simulated with equilibrium reactor blocks to model each chemical reaction. Various operating conditions for WGS and PROX reactors were used to control the CO amount. Especially, temperatures of each reactor and the amount of additional oxygen for PROX reactor is modified. n-dodecane and 1-methylnaphtalene were used as synthetic diesel fuel. In result, proper operating condition to meet CO level requirement for PEMFC can be obtained.