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RISS 인기검색어
- 검색키워드
- 저자 : 오택림(ZeLin Wu) (검색결과 2 건)
- 무료
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- 유료
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Dynamic simulation of reaction modeling and slag behavior in an entrained gasifier
Zelin Wu(오택림),Rygang-Gyoon Kim(김량균),Chung-Hwan Jeon(전충환) 한국연소학회 2013 KOSCOSYMPOSIUM논문집 Vol.2013 No.12
In order to better understand the information of an entrained flow type gasifier, a mathematical model is developed to simulate the Shell entrainment pilot coal gasifier. According to the structure of the gasifier, establish submodels to simulate the complicated performance of gasifier. The model is employed to set up the mass conservation equation of gas components, solid flow, and gas flow and total energy conservation equation. Moreover, the model is obviously closer to reality. Because the syngas composition predicted by the model is under the condition of limited residence time. There are a number of water tubes around the shell gasifier wall. With the heat transfer coefficient of each wall level to calculate the heat loss and the temperature of every level and the model reflects the influence of shell gasifier water wall performance factors. Slag mass flow rate on the wall is calculated by the slag submodel. From the results concluded that temperature and viscosity are the main parameters affecting the slag mass flow rate.
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통기도 실험에 의한 점결탄 혼탄시 연화용융 및 팽창 특성 분석
황찬원(ChanWon Hwang),오택림(ZeLin Wu),류광일(KwangIl Ryu),김량균(RyangGyoon Kim),전충환(ChungHwan Jeon) 대한기계학회 2013 대한기계학회 춘추학술대회 Vol.2013 No.12
The experiment was designed to study the coking coal swelling characteristics as a function of particle size distribution and density under thermal shock. During the cokes making process, coking coal pass through the fluidity zone at specific temperature. Cokes characteristics can be caused by physicochemical properties at fluidity zone. Three kinds of coking coal was used for experiment and each coal has different swelling characteristics. Softening and swelling characteristics was analyzed through the permeability test. Permeability test was performed by measuring the differential pressure of nitrogen. Finally, It compared blending effect by the swelling characteristics. Three kinds of coking coal was blended A with D and D with G in specific ratio. Coal D is standard of comparison. As a result, D:A blended coking coal has generally low permeability characteristics (1.0~1.2bar). Because It strongly combined with each particle after mesophase zone. This characteristic derives from FSI and volatile matter contents. And D:G blended coking coal test results seem to decrease with coal Gcontents. It means, coal G has not sufficient swelling characteristics.
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