Structural optimization of airlift internal loop reactors and applications
ZHANG Lei1, HAN Yan-he1, WANG Jing-xian2, ZHANG Xiao-fei3
1. Department of Environmental Engineering, Beijing Institute of Petrochemical Technology, Beijing 102617, China; 2. Plant Science and Technology College, Beijing University of Agriculture, Beijing 102206, China; 3. Research Institute of Safety & Environment Technology, China National Petroleum Corporation, Beijing 102206, China
Abstract: The application situation of airlift internal loop reactors in various fields is deeply analyzed and introduced through reviewing the research progress of novel reactors,which provides referential directions for the application of novel reactors in the future.It is found via summarizing the structural optimization methods used by the predecessors that the CFD method has been used more frequently than the experimental research method in structural optimization to reactors.In addition,the Euler-Euler two-phase flow model is the main model for simulation research.The results of simulation study show that there is an optimal range for each structure:the ratio of height to diameter is around 7,the ratio of ring to gap is around 1,the bottom clearance height is approximately equal to the down-comer zone length,and the gas distributor is generally selected based on the actual situation.Although the structural parameters are different in different studies,the range of the main structural parameters is approximately the same.
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