CPFD simulation of gas-solids flow in annular combustion chamber of large-scale circulating fluidized bed

doi:10.7523/j.issn.2095-6134.2016.02.011

›› 2016, Vol. 33 ›› Issue (2): 218-222.DOI: 10.7523/j.issn.2095-6134.2016.02.011

• Research Articles • Previous Articles Next Articles

CPFD simulation of gas-solids flow in annular combustion chamber of large-scale circulating fluidized bed

QIU Guizhi^1,2, YE Jiamin¹, WANG Haigang¹, WANG Xiaofang¹, WANG Fajun^1,2, SUN Yunkai¹, NIE Li³

1. Institute of Engineering Thermophysics, Chinese Academy of Sciences, Beijing 100190, China;
2. University of Chinese Academy of Sciences, Beijing 100049, China;
3. Dongfang Boiler Group Co. LTD, Zigong 643000, Sichuan, China

Received:2015-03-13 Revised:2015-07-07 Online:2016-03-15

Abstract

Abstract:

Annular combustion chamber was designed for large-scale circulating fluidized bed(CFB) to improve the secondary air penetration and increase the enclosing heat transfer surface. In this study, the gas-solids flow in a large-scale CFB with annular combustion chamber is investigated based on CPFD simulation. The results show that the pressure distribution and solids flux predicted by the numerical simulation are in good agreement with experimental results. The gas-solids flow behavior and non-uniformity characteristics of gas and solids mass fluxes at combustion chamber outlets are analyzed. The results can be used as valuable information for the optimum design of annular combustion chamber.

Key words: large scale circulating fluidized bed, annular combustion chamber, gas-solids flow, CPFD simulation

CLC Number:

TK224.1

QIU Guizhi, YE Jiamin, WANG Haigang, WANG Xiaofang, WANG Fajun, SUN Yunkai, NIE Li. CPFD simulation of gas-solids flow in annular combustion chamber of large-scale circulating fluidized bed[J]. , 2016, 33(2): 218-222.

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CPFD simulation of gas-solids flow in annular combustion chamber of large-scale circulating fluidized bed

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