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분체공학 , 유동층 , 고분자 , 재료 ( 무기 , 유기 ) : 순환유동층 반응기에서 벽면의 마모 특성 고찰
김시문(Si Moon Kim),이종민(Jong Min Lee),김재성(Jae Sung Kim),김종진(Jong Jin Kim),김의현(Euy Hyun Kim) 한국화학공학회 2002 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.40 No.2
The wall erosion characteristics of a circulating fluidized bed reactor(0.25m-L×0.62m-W×10m-H) was observed with various operating conditions, such as fluidizing velocity, total solid inventory and primary to secondary air ratio. The erosion rate was affected by solid hold-up and solid circulation rate as well as fluidizing velocity which were varied due to operating conditions. The wall erosion in dilute phase of the CFB riser increased with increasing solid hold up resulted from increasing of the fluidizing velocity and the primary to secondary air ratio. The erosion of the wall in dense phase increased with increasing fluidizing velocity although the solid hold up decreased with fluidizing velocity. The extent of erosion in the transition phase was somewhere in between the dense and the dilute phases. The erosion of the roof of the CFB riser increased with increasing solid circulation rate resulted from increasing the fluidizing velocity, total solid inventory and primary to secondary air ratio. The middle part of the roof where the solid circulation rate was higher than that of the side part of the roof, showed the highest erosion rate. The erosion seemed to be serious at the area around the cyclone inlet duct due to the enlarged down flow of the solid particles at this area.
김시문(Si-Moon Kim),주용진(Yong-Jin Joo),김종진(Jong-Jin Kim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11
Online performance monitoring systems implemented were adapted to two combined cycle power plant. The system consists of online data, online heat balance, online performance and optimization modules to provide real time operation information and performance capabilities. The performance monitoring system enabled plant personnel to more quickly identify and correct performance problem, the quicker and easier identification of equipment performance problems improves overall plant heat rate and capacity. In many aspects, the system could be contributed to evaluate the overall plant and major equipments performance, to determine their degradations, acquire real time measurements and archive data for easy retrieving and viewing.
김광신(Kim, KwangSin),주용진(Joo, Yong-Jin),김미영(Kim, Mi Yeong),김시문(Kim, Si-Moon),이중원(Lee, Joongwon),김기태(Kim, Ki-Tae) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.11
서부 발전 태안화력발전소에 건설 예정인 IGCC Demo plant의 설계 자료를 근거로 석탄 가스화기의 정상 상태 전산모사를 PRO/II를 사용하여 수행하였다. 석탄을 PRO/II가 받아들일 수 있는 성분으로 바꾼 후 가스화기를 버너와 가스화기 본체의 두 부분으로 나누어 모델링하였다. 버너는 단열조건의 Gibbs Reactor로 모델링하였다. 모사 결과 산소가 완전 소진될 때까지 반응이 진행되는 것을 확인하였다. 가스화기는 char gasification 반응은 kinetic reaction equation으로, gas phase reaction은 equilibrium reactor로 모사하는 알고리듬을 개발 하였으나 PRO/II의 기능에 한계가 있어 간단한 Gibbs Reactor로 모사하였다. 가스화기는 membrane wall에 의하여 냉각되는 것을 고려하여 1550?C의 균일한 온도에서 반응이 일어나는 것으로 고려하였다. 전산 모사 결과 주요 성분의 조성이 실제 syngas의 조성과 5% 정도 오차가 있는 것으로 나타났다.