Investigation into the operation of an autothermal two-section subbituminous coal fluidized bed gasifier
Nikolay Abaimov1
Alexander Ryzhkov1
Alexey Dubinin1
Lu Ding2
Vladimir Tuponogov1
Sergey Alekseenko3
1.Ural Federal University,Ekaterinburg,Russia 6200022.Institute of Clean Coal Technology,East China University of Science and Technology,Shanghai 200237,China3.Ural Federal University,Ekaterinburg,Russia 620002;Institute of Thermophysics,Siberian Branch,Russian Academy of Sciences,Novosibirsk,Russia 630090
摘要：Using a newly developed experimental setup,the features and advantages of an autothermal single-casing atmospheric sub-bituminous coal fluidized bed air-blown gasifier,combining a combustion and gasification section,and mixing the dispersed phase(inert material,char)and heat exchange between them through an annular transfer device,have been revealed.To increase the efficiency of the gasifier,an experimental-computational method was developed find the conditions for optimal operation,combining changing the annular flow's geometry and regulating the primary air for gasification.A simple and reliable multizone thermodynamic calculation model makes it possible to predict the composition of char and syngas in the gasification section with acceptable accuracy.This method confirmed that a two-section fluidized bed gasifier can provide efficient gasification of solid fuels and is suitable for use in small-scale cogeneration plants.Syngas with a heating value of 3.6-4.5 MJ/m3 and CGE of 38.2％-42.3％was obtained in the experimental setup without optimizing the primary air flow rate.With optimization,the indicators increased to the heating value of syngas of 5.20-5.34 MJ/m3 and CGE of 42.5％-50.0％.With heat regeneration of 0.8,CGE increases to 70％.
机标关键词：operationautothermalcoalfluidizedgasifierintoinvestigationsubbituminous
论文发表日期：2023-06-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：14( 190-203 )
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