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백민수(Min Su Paek),최석호(Suk Ho Choi),이경우(Kyeong Woo Lee),천무환(Mu Hwan Chon) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
As a vacuum or low pressure pumping system, vacuum ejector system has been widely used because of its convenient operation and high pumping efficiency. Ejectors are the main part of vacuum system, of which designs determine the efficiency of vacuum system. Through 2-stage steam ejectors, the vacuum system operating characteristics were experimentally analyzed. The results shows that as the motive steam pressure is higher, the suction pressure is lower inversely. But, as the suction flow rate glows higher, the suction pressure becomes higher, too. In 2-stage vacuum system, the ejector pressure was so correlated that affected each other. Also, the condenser conditions largely affected the ejector operations, too.
300MW IGCC 가스화플랜트의 가스화 성능 및 Slag System 용량 예측
구자형(Koo, Ja-Hyung),백민수(Paek, Min-Su),유정석(Yoo, Jeong-Seok),김봉근(Kim, Bong-Keun),김유석(Kim, You-Seok),이황직(Lee, Hwang-Jik) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.10
분류층 가스화기에서 가스화기 운전 온도는 슬래그의 원활한 배출과 가스화기 성능 등에 영향을 미친다. 가스화기 운전온도는 또한, 석탄 및 산소 소비량에도 영향을 미쳐 궁극적으로는 가스화 플랜트의 주요 설비 용량을 결정하는 주요 요인중의 하나이다. 가스화기 운전 온도가 일정수준 이상으로 증가할 경우 냉가스 효율이 저하되고 가스화 성능에 약 영향을 미친다. 본 논문에서는 Coal 및 Flux 공급장치, 슬래그 배출장치 당의 구성을 설명하고 Flux 투입량에 따른 슬래그 Tcv, 가스화기 성능 등을 예측하였다. 또한, 300MW IGCC 실증 가스화플랜트 엔지니어링을 위한 예비단계로 석회석 투입에 따른 Flux 공급장치를 포함한 Feeding 설비 용량, 슬래그처리설비 용량, 가스화기 내부 및 출구 적정온도를 예측하였다.
최석호(Seok-Ho Choi),백민수(Min-Su Paek),문길호(Kil-Ho Moon) 한국유체기계학회 2003 유체기계 연구개발 발표회 논문집 Vol.- No.-
In butterfly control valve, a multi-hole orifice is attached downstream of valve to stabilize flow fluctuation. The computational simulation is conducted to analyze valve flow characteristics. The results show that the velocity distribution of downstream of valve with the orifice is improved compared to non-orifice case. Test result in site is 60% reduction in vibration.
ASU 와 연계를 고려한 IGCC 용 가스터빈의 성능 예측
박성구(Sung Ku Park),김유석(You Seok Kim),백민수(Min Su Paek) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
The construction plan of 300MW-class IGCC plant has been pushed ahead on the Taean thermal power plant site in Korea. The integration of gas turbine and air separation unit has a significant effect on the performance and the stability of the IGCC plant. In this paper, the influence of the integration with gas turbine and air separation unit has been analyzed using commercial code(GateCycle) and in-house code(visual Basic) for the process design of gas turbine and air separation unit, respectively. To achieve an acceptable surge margin of the gas turbine, the air extraction from compressor exit and the extension of turbine nozzle area were considered. As the extraction air from compressor increases, the surge margin also increases. Furthermore, it is expected to be able to secure surge margin through the extension of turbine nozzle area. If the turbine nozzle area increases by 19.4%, the surge margin is analyzed to be similar to a design surge margin of gas turbine for natural gas. The mass flow of extraction air is limited by the operation constraints such as turbine (rotor) inlet temperature and the allowable integration degree was predicted to be about 35%. At this integration degree, the power consumption of air separation unit and the integrated system efficiency were analyzed to be about 45MW and 31%, respectively.
300MW급 실증 가스화기의 최적 운전조건 및 성능 예측
유정석(Yoo, Jeong-Seok),구자형(Koo, Ja-Hyung),백민수(Paek, Min-Su),이황직(Lee, Hwang-Jik) 한국신재생에너지학회 2008 한국신재생에너지학회 학술대회논문집 Vol.2008 No.05
The optimal operation condition of gasifier is one of the most important parameters to increase efficiency and reliability in IGCC plant. Also the prediction of the syngas composition and quantity must be predicted to carry out process design of the gasification plant. However, the gasifier process licensor are protective with information on process design and optimal gasifier design conditions. So, the most of process studies in the engineering company for gasification plant have carried out to look for key parameters and optimal design conditions using several prediction methods. In this paper, we present the estimated preliminary optimal operation condition of the 300MW Demonstration Entrain Flow Gasifier using Aspen Plus. The gasifier operation temperature considering slag flow was predicted by FactSage software and Annen Model.