Print Email Facebook Twitter Computational Fluid Dynamics Modeling of HIsarna Off-Gas System Title Computational Fluid Dynamics Modeling of HIsarna Off-Gas System: Wall Modeling and Heat Loss Prediction Author Hosseini, A. (TU Delft Team Yongxiang Yang) Calis, Randy (Tata Steel) van der Plas, Dirk (Tata Steel) Put, Pieter (Tata Steel) Agema, Jelle (Tata Steel) Meijer, Koen (Tata Steel) Hage, Johannes (Tata Steel) Offerman, S.E. (TU Delft Team Erik Offerman) Yang, Y. (TU Delft Team Yongxiang Yang) Date 2023 Abstract The HIsarna off-gas system wall is a cooling jacket made of cooling pipes arranged in the radial direction and in a circular pattern. Part of the off-gas system cooling pipes are isolated using a low-thermal-conductivity refractory material to protect the cooling pipe from melting and thermal stresses. During long runs and due to thermomechanical stresses, the refractory material is lost, and its thickness is reduced. It is possible to measure the thickness of the refractory layer only during shutdown, which is a disadvantage during long runs. The aim is to investigate the possibility of predicting the thickness of the refractory material by using other parameters that are possible to measure during the operation. A combination of FEM and CFD modeling is used to develop a methodology for detailed wall modeling and refractory material loss prediction. Finite element method (FEM) analysis is used to obtain the thermal properties of the wall using detailed geometries for variable refractory thickness. The obtained properties are then used to build CFD models to study the effect of refractory thickness on wall heat loss, temperature and composition profiles. The proposed procedure is validated against the plant measurement, and according to the findings, it is possible to relate the wall thickness to measured parameters such as heat loss through the walls, temperature and carbon conversion. Subject computational fluid dynamics (CFD)finite element method (FEM)HIsarnaoff-gas systemreflux chamberheat transfer modelingwall modelingshell conduction modeling To reference this document use: http://resolver.tudelft.nl/uuid:0b035e0c-e9bd-43fb-93cd-db59f00cbc08 DOI https://doi.org/10.3390/pr11113082 ISSN 2227-9717 Source Processes, 11 (11) Part of collection Institutional Repository Document type journal article Rights © 2023 A. Hosseini, Randy Calis, Dirk van der Plas, Pieter Put, Jelle Agema, Koen Meijer, Johannes Hage, S.E. Offerman, Y. Yang Files PDF processes_11_03082.pdf 7.71 MB Close viewer /islandora/object/uuid:0b035e0c-e9bd-43fb-93cd-db59f00cbc08/datastream/OBJ/view