Gas and solid flow patterns in the loop-seal of a circulating fluidized bed

被引：30

作者：

Bareschino, Piero ^{[1
]}

Solimene, Roberto ^{[2
]}

Chirone, Riccardo ^{[2
]}

Salatino, Piero ^{[3
]}

机构：

[1] Univ Sannio, Dipartimento Ingn, I-82100 Benevento, Italy

[2] CNR, Ist Ric Combust, I-80125 Naples, Italy

[3] Univ Naples Federico II, Scuola Politecn & Sci Base, Dipartimento Ingn Chim Mat Prod Ind, I-80125 Naples, Italy

来源：

POWDER TECHNOLOGY | 2014年 / 264卷

关键词：

Circulating fluidized bed; Loop seal; Non-mechanical valve; PRESSURE BALANCE; COMBUSTION; RECYCLE; HYDRODYNAMICS; SIMULATION; DESIGN; SYSTEM;

D O I：

10.1016/j.powtec.2014.05.036

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Gas and solid flow patterns in a loop-seal operated as solid re-injection device between the downcomer and the riser of a lab-scale cold CFB apparatus were characterized under a broad range of operating conditions by a combination of methods, including measurement of pressure time series along the CFB loop, solid mass flux along the riser and solids and gas tracing into the loop-seal. Analysis of results from solids and gas tracing tests highlights the role of both solid downflow in the supply chamber and gas cross-flow between the loop-seal chambers on the fluidization patterns. An approximate criterion is given for the onset of gas "leakage" between the two loop-seal sections, relevant to loop-seal applications in dual interconnected fluidized beds (DIFB). (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：197 / 202

页数：6

共 17 条

[1] Analysis of the overall pressure balance around a high-density circulating fluidized bed [J].