作　　者： ; ; ; ;

机构地区： 中国科学院

出　　处： 《天然气化工—C1化学与化工》 2013年第4期34-41,共8页

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装置上开展了压力分布及控制规律实验研究。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空气反应器、燃料反应器、气体密封室等部件的表观气速对循环状态的影响。实验结果表明,颗粒在提升管中流动为环核型结构,平均空隙率轴向先增大后减小,装置适宜的操作状态为燃料反应器流化气速1.2m/s^2.0m/s,空气反应器气速1.4m/s^1.7m/s,返料管气速为0.4m/s^0.85m/s,两反应器存料量2.5kg^4.5kg。 A cold model of interconnected fluidized bed system for chemical-looping gasification of biomass was designed and built in the laboratory. The pressure distribution and fluctuation experiments were conducted by using quartz sand as bed materials and air as fluidizing medium in the cold model. The effects of tluidizing gas flow rates in air reactor, fuel reactor and loopseal on the solid circulation rate and pressure distribution in the various zones of the reactor were examined by using PY500 intelligent pressure detection instrument and PV-6 particle velocity analyzer. The experimental results indicated that in air reactor the particles flow showed ring-nuclear structure, the axial average voidage increased first and then decreased, and the optimal operation conditions were as follows： the fluidizing gas velocity of the fuel reactor from 1.2m/s to 2.0m/s, the gas velocity of the air reactor from 1.4m/s to 1.Tm/s, the gas velocity of the loopseal from 0.4m/s to 0.85m/s, and the bed materials inventory of the two reactors from 2.5kg to 4.5kg.

关 键 词： 生物质 循环流化床 化学链气化 冷态实验

领　　域： [化学工程] [动力工程及工程热物理]