http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
장지훈,한가람,유근실,임현수,이욱륜,박호영 한국수소및신에너지학회 2019 한국수소 및 신에너지학회논문집 Vol.30 No.3
This study was conducted to evaluate the microbial communities in coupled system of a microbial electrolysis cell and an anaerobic digestion. Glucose, butyric acid, propionic acid and acetic acid were used as substrates. The maximum methane production and methane production rate of propionic acid respectively were 327.9±6.7 mL CH4/g COD and 28.3±3.1 mL CH4/g COD·d, which were higher than others. Microbial communities’ analyses indicated that acetoclastic methangens were predominant in all systems. But the proportion of hydrogenotrophic methanogens was higher in the system using propionic acid as a substrate when compared to others. In coupled system of a microbial electrolysis cell and anaerobic digestion, the methane production was higher as the distribution of hydrogen, which was generated by substrate degradation, and proportion of hydrogenotrophic methanogens was higher.
장지훈(Jihoon Jang),한가람(Karam Han),유근실(Geun Sil Yu),이욱륜(Wook Ryun Lee),임현수(HyeonSoo Lim),박호영(Ho Young Park) 한국연소학회 2019 한국연소학회지 Vol.24 No.2
Devolatilization behavior of pulverized coal in a drop tube furnace (DTF) has been calculated with the measured gas temperature and velocity. The particle temperature and velocity were calculated from the energy and momentum equations of particle by using the fourth order Runge-Kutta method. The volatile evolved from the particle along with the reactor tube was also calculated varying the wall temperature of reaction tube as well as the particle diameter. The optimal kinetic parameters of subbituminous coal were obtained from the volatile evolution data of the devolatilization experiment in the DTF by error minimization.
박호영(Ho Young Park),김영주(Young Ju Kim),유근실(Guen Sil Yu),김춘근(Chun Kun Kim),김동훈(Dong Hun Kim) 한국연소학회 2006 KOSCOSYMPOSIUM논문집 Vol.- No.-
From the analysis of fly ash, which contains unburned carbon, collected from the coal-fired Yong Hung power station, most particles are turned out to be hollow cenosphere and agglomerated soot particles. The sooting potential from six coals used in the plant were investigated with CPD model. The results show that the higher potential presented to Peabody, Arthur, Shenhua coals rather than other coals. It is necessary to measure the coal flow rates at each coal feeding pipe for four burner levels since they affect the extent of mixing of soot with oxidant, in turn, the oxidation rate of soot particles. The unbalance in coal flow rate was found in several coal pipes. We successfully reduced unburned carbon in ash by increasing the excess air and changing the SOFA yaw angle.