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제철 소결 공정의 배가스 재순환 적용을 위한 소결 베드 프로세스 모델링 접근방법
안형준(Hyungjun Ahn),최상민(Sangmin Choi),조병국(Byungkook Cho) 한국연소학회 2011 KOSCOSYMPOSIUM논문집 Vol.- No.43
In the iron and steel manufacturing, sintering process precedes blast furnace to prepare feed materials by agglomerating powdered iron ore to form larger particles. There are several techniques which have devised to improve sintering production and productivity including flue gas recirculation(FGR) and additive gas enriched operation. The application of those techniques incurs variations of process configurations as well as inlet and outlet gas conditions such as temperature, composition, and flow rate which exert direct influence on reactions in the bed or the operation of the entire plant. In this study, an approach of sintering bed modeling using flowsheet process simulator was devised in consideration of FGR. Changes of incoming and outgoing gas conditions could be obtained and compared in terms of temperature, composition, and flow rate as results of modeling for various cases of process configuration including normal and FGR sintering process. In addition, the change of the amount of total flue gas and stack gas with FGR as well as combustion temperature in the bed could be checked by using the sintering bed process model. It is expected to utilize the model for various process configurations with FGR, which may provide the usefulness for design and operation of sintering plant with FGR.
안형준(Hyungjun Ahn),최상민(Sangmin Choi),조병국(Byungkook Cho) 한국연소학회 2011 KOSCOSYMPOSIUM논문집 Vol.- No.42
In the iron and steel making industry, sintering process precedes blast furnace process and agglomerates powdered iron ore to form larger particles as feed material of the blast furnace. For purposes of sintering production and productivity improvements, techniques including flue gas recirculation have been devised. The application of those techniques incurs the variation of process configurations or inlet and outlet gas conditions such as temperature, concentrations, or flow rates which exert direct influence on reactions in the bed or system operations. In this study, an approach of sinter bed modeling using flowsheet process simulator was studied mainly focused on inlet-outlet gas conditions change. Results of normal sinter process were matched considerably well to the previous researches in terms of outlet gas temperature, concentration, and moisture distribution patter as well as solid layer temperature and moisture distribution. Results of outlet gas from the assumed sinter process with flue gas recirculation system were also plotted and compared to that of normal sinter process.
고체 입자 베드 내 반응 환경 변화를 위한 모델링 접근 방법
안형준(Hyungjun Ahn),최상민(Sangmin Choi) 한국연소학회 2013 KOSCOSYMPOSIUM논문집 Vol.- No.46
Various solid particle materials are treated in the industrial processes including fixed-beds or moving grate beds, and modeling approaches have been widely applied to the processes to predict and evaluate their performance. For this study, the modeling approach was applied to iron ore sintering process with various improvement measures. Based on the previous modeling approach, the changes and effects of the improvement measures were discussed at the point of controlling the combustion environment in the bed.
배가스 재순환 적용을 위한 제철 소결 베드 프로세스 모델링
안형준(Hyungjun Ahn),최상민(Sangmin Choi),조병국(Byungkook Cho) 한국연소학회 2011 한국연소학회지 Vol.16 No.4
In the iron and steel manufacturing, sintering process precedes blast furnace to prepare feed materials by agglomerating powdered iron ore to form larger particles. There are several techniques which have devised to improve sintering production and productivity including flue gas recirculation(FGR) and additive gas enriched operation. The application of those techniques incurs variations of process configurations as well as inlet and outlet gas conditions such as temperature, composition, and flow rate which exert direct influence on reactions in the bed or the operation of the entire plant. In this study, an approach of sintering bed modeling using flowsheet process simulator was devised in consideration of FGR and the change of incoming and outgoing gas conditions. Results of modeling for both normal and FGR sintering process were compared in terms of outgoing gas temperature, concentration, and moisture distribution pattern as well as incoming gas conditions. It is expected to expand the model for various process configurations with FGR, which may provide the usefulness for design and operation of sintering plant with FGR.
산업용 고체 처리 공정 - 입자 반응 및 고정층 반응기 모델링
안형준(Hyungjun Ahn),최상민(Sangmin Choi) 한국연소학회 2017 한국연소학회지 Vol.22 No.2
This paper reviews the previous industrial solid bed process simulations to provide a better understanding of the modeling approaches to the particle reactions in the bed. Previous modeling studies on waste incinerator, iron ore sintering bed, blast furnace, iron ore pellet indurator, and biomass combustor can be seen on the common ground of unsteady 1-D modeling scheme. Approaches to the particle reaction modeling have been discussed in terms of the status of solid particles in the bed, types of reaction progression in a particle, and the consideration of the intra-particle temperature gradient.