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Experimental Investigation of Particle Circulation in an Internally Circulating Clapboard‐Type Fluidized Bed
Chemical Engineering & Technology ( IF 2.1 ) Pub Date : 2019-11-14 , DOI: 10.1002/ceat.201800416
Guodong Jiang 1 , Liping Wei 1, 2 , Zhiwen Chen 1 , Liuchang Peng 1 , Nan He 1 , Changsong Wu 1
Affiliation  

The particle circulation rate of the clapboard‐type internal circulating fluidized bed (ICFB) is investigated with the particle tracing method. For quantitative determination, the capacitance probe and the differential pressure sensor are used to measure the voidages in the high and low gas velocity regime. The mechanism governing the solid circulation in the ICFB is the competition between driven force, caused by pressure drop across the gap, and the resistance force of particle flow, derived by the flow friction in the wall surface and clapboard, the partial resistance loss of clearance, and the gas bypassing formed from the high to the low gas velocity regime. A modified La Nauze model helped to predict and to calculate the particle circulation rate without giving data of pressure drops.

中文翻译:

内循环隔板式流化床中颗粒循环的实验研究

隔板式内部循环流化床(ICFB)的颗粒循环速率采用颗粒示踪法进行了研究。为了进行定量测定,电容式探头和压差传感器用于测量高低气体速度状态下的空隙率。控制ICFB中的固体循环的机制是由间隙两端的压降引起的驱动力与由壁表面和隔板的流动摩擦所产生的颗粒流的阻力之间的竞争,间隙的部分阻力损失,并且气体旁路由高到低的气体速度状态形成。改进的La Nauze模型有助于预测和计算颗粒循环速率,而无需给出压降数据。
更新日期:2019-11-14
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