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Heat and Mass Flow Control in an Interconnected Multiphase CFD Model for Chemical Looping Combustion
Author(s) -
KruggelEmden H.,
Scherer V.
Publication year - 2011
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201100068
Subject(s) - chemical looping combustion , exothermic reaction , combustion , computational fluid dynamics , chemical reactor , solid fuel , chemistry , chemical reaction , multiphase flow , process (computing) , process engineering , chemical process , nuclear engineering , chemical engineering , thermodynamics , engineering , computer science , biochemistry , physics , organic chemistry , operating system
Chemical looping combustion is a feasible option for carbon capture from fossil fuels. Within the process, the oxygen necessary for combustion is provided by a solid carrier material which alternately undergoes oxidation and reduction reactions. Features of the process are that the oxidation reaction of the particulate carrier in the air reactor is strongly exothermic and that the conversion of both oxidation and reduction reactions has to be in balance for stable operation. Simulations of the transient behavior of chemical looping combustion systems are possible through multiphase CFD. To allow for the modeling of chemical looping at steady state, cooling of the reactors and mass flow between fuel and air reactor must be adequately adjusted. Therefore, an interconnected multiphase CFD model was extended by an adjustment control. In this extended modeling framework variations of the operational load, control set points and carrier materials were performed. These simulations allow detailed insight into the dynamic behavior of chemical looping systems.