文章基本信息

标题：3-D Numerical Study of CFB 110 MW: Fluidization in Furnace and Cyclone with Loads And Air Combustion Variation
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作者：Ari Wirahadi ; Heru Mirmanto
期刊名称：Majalah Iptek = IPTEK : The Journal for Technology and Science
印刷版ISSN：0853-4098
电子版ISSN：2088-2033
出版年度：2019
卷号：30
期号：2
页码：24-27
DOI：10.12962/j20882033.v30i2.4999
出版社：IPTEK
摘要：Circulating Fluidized Bed (CFB) boiler has advantages when uses low rank coal compared to Pulverized Boiler. It will be less operational cost but has greater risk in degradation because of sands material inside the process. Air combustion between primary and secondary air is one important parameter that influent fluidization of CFB. Numerical simulation of commercial CFD was used with Eulerian multiphase model implemented to analyze sand volume of fraction, air and sand velocity including pressure distribution around furnace. It used 55%-45% air combustion ratio of primary and secondary air as reference when boiler operated at 63% and 100% based on operation performance of CFB. Then it simulated with additional variation of air combustion ratio 50%-50%. Simulation of 110% load was added using all air combustion variations. The simulation showed that fluidization with air combustion ratio 50%-50% and 55%-45% executed well when operated at 63%. Meanwhile, fluidization 100% and 110% with all those air combustion ratios would cause a great number of sands entered inlet cyclone and higher sands as well air velocities.
关键词：CFD;computational fluid dynamicsCFB;air combustion;fluidization