层流炉反应管内气固两相流的实验研究  

EXPERIMENTAL STUDY ON GAS-SOLID TWO-PHASE FLOW IN LAMINAR ENTRAINED REACTOR

作　　者：王娜娜[1] 易维明[1] 柏雪源[1] 李永军[1] 

机构地区：[1]山东理工大学农业工程与食品科学学院,山东省清洁能源工程技术研究中心,淄博255049

出　　处：《太阳能学报》2015年第9期2077-2082,共6页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50876056;51276103);山东省自然科学基金(ZR2011EL041)

摘　　要：为研究层流炉反应管内气固两相流的运动规律,设计制造一套1∶1的冷态透明玻璃实验装置。在主气流氩气流量为1.0、1.5、2.0、2.5 m3/h时,利用粒子图像测试技术(PIV)对反应管内氩气流(以水蒸气为示踪粒子)和生物质半焦颗粒速度场进行测量。结果表明:在反应管中心处,氩气速度和生物质半焦颗粒的轴向速度相差较大,不能用氩气速度代替颗粒速度。通过对实验数据的分析计算,获得反应管内雷诺数与生物质半焦颗粒停留时间(无量纲处理后)的关联式。可将该结果用于计算热解挥发特性实验的颗粒停留时间,从而优化颗粒停留时间的计算方法,为建立更加合理的热解动力学模型提供依据。An investigation of argon （using vapor as tracer particle）and char powder motion in laminar entrained flow reactor have been carried out at different flow rate of 1.0-2.5 m^3/h using particle image velocimetry （PIV）. The results indicated that the difference of the velocity distributions at center of the pipe between argon and biomass semicoke is big. By analyzing the measured data, the linear relationship between Re of Argon and the dimensionless residential time of biomass semicoke was obtained. This result can be used to calculate the residential time of biomass semicoke in the flash devolatilization characteristics experiment, which optimizes the calculating of residential time of biomass semicoke and offers evidence for more reasonable kinetic model of biomass pyrolysis.

关 键 词：生物质半焦颗粒 层流炉反应管 两相流 速度场 PIV 

分 类 号：Q353[生物学—遗传学] TK6[动力工程及工程热物理—生物能]