化学链气化串行流化床设计及试验研究  

Design and experimental research of interconnected fluidized bed reactor for chemical-looping gasification

作　　者：魏国强[1,2] 何方[1] 李海滨[1] 黄振[1] H.SOZEN 

机构地区：[1]中国科学院广州能源研究所,中国科学院可再生能源与天然气水合物重点实验室,广东广州510640 [2]中国科学院大学,北京100049

出　　处：《可再生能源》2014年第1期93-99,共7页Renewable Energy Resources

基　　金："十二五"国家科技支撑计划项目(2011BAD15B05)

摘　　要：在生物质化学链气化反应基础上设计并搭建了一套串行流化床冷态模型。以石英砂为床料、空气为流化介质，在该冷态装置上开展了压力分布及控制规律试验研究。采用PY500型智能压力检测系统及PV-6型激光颗粒速度测量仪着重研究了循环流化床冷态装置的料层阻力特性及固体循环量，考察了空气反应器、燃料反应器、返料管部件的流化风量对循环状态和流化床内压力分布的影响，获得了串行流化床稳定运行的操作条件和控制规律。试验结果表明，最佳操作状态：燃料反应器流化气速为0．23～0．32m／s，空气反应器气速为0．42～0．47m／s，返料管气速为O．07—0．1m／s，两反应器存料量为2．5～4．5kg，为热态试验装置的设计、运行提供了参考依据。A cold model of interconnected fluidized bed system based on chemical-looping gasifica- tion of biomass has been designed and built in the laboratory. The pressure distribution and control law experiments were conducted by using quartz sand as bed materials and air as fluidizing medium in the cold model. Resistance characteristics and solid flux of the cold model of circulating fluidized bed were studied by using PY500 intelligent pressure detection device and PV-6 laser particle velocity measuring instrument. The effect of fluidization wind rate in air reactor, fuel reactor, and loopseal on the circulato- ry state and pressure distribution in the various zones of the reactor were examined. Obtained steady operating condition and control law of interconnected fluidized bed. The experiment results showed that the fluidizing gas velocity of fuel reactor was 0.23-0.32 m/s, gas velocity of the air reactor was 0.42-0.47 m/s, gas velocity of the loopseal was 0.07-0.1 m/s, the bed materials inventory of the two reactor was be- tween 2.5-4.5 kg, the fluidized bed could reach the optimal operating conditions. The findings of the present work provide useful references for the design parameters and operational conditions for the thermal state fluidized bed system.

关 键 词：石英砂 循环流化床 压力 冷态试验 

分 类 号：TK6[动力工程及工程热物理—生物能] TK16