Numerical investigation on two-phase flow in rich/lean pulverized coal nozzles

被引：16

作者：

Fan, JR ^{[1
]}

Xia, ZH ^{[1
]}

Zhang, XY ^{[1
]}

Cen, KF ^{[1
]}

机构：

[1] Zhejiang Univ, Dept Energy Engn, Hangzhou 310027, Peoples R China

来源：

FUEL | 2000年 / 79卷 / 14期

关键词：

numerical simulation; gas-solid two-phase flow; pulverized coal rich/lean nozzle;

D O I：

10.1016/S0016-2361(99)00252-5

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

The investigation of particle-laden turbulent flow in a newly developed rich/lean pulverized coal nozzle interior is presented in this paper. A stochastic particle dispersion model and a model of particle-wall collision are employed for numerical simulation. Various cases of different particle diameters, positions of the baffle-board and the diaphragm are numerically investigated. The flow characteristics in the nozzle interior, such as flow equilibrium between the two sides of the diaphragm, particle distribution, rich/lean concentration ratio and characteristics of resistance are discussed. This paper analyzes the mechanism of the separating process of pulverized coal. The results not only show a good agreement with the experimental data, but also are of practical value. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1853 / 1860

页数：8

共 13 条

[1]

CHI ZH, 1995, P 20 INT TECHN C COA, P245

[2] New stochastic particle dispersion modeling of a turbulent particle-laden round jet [J].

Fan, JR ;

Zhang, XY ;

Chen, LH ;

Cen, KF .

CHEMICAL ENGINEERING JOURNAL, 1997, 66 (03) :207-215

[3] FACTORS IN THE CONVERSION OF FUEL NITROGEN TO NITRIC AND NITROUS OXIDES DURING FLUIDIZED-BED COMBUSTION [J].

GAVIN, DG ;

DORRINGTON, MA .

FUEL, 1993, 72 (03) :381-388

[4]

Grant G., 1975, J AIRCRAFT, V12, P471, DOI [10.2514/3.59826, DOI 10.2514/3.59826]

[5]

LARUE AD, 1988, MOD POWER SYST, V8, P42

[6]

Launder B. E., 1974, Computer Methods in Applied Mechanics and Engineering, V3, P269, DOI 10.1016/0045-7825(74)90029-2

[7]

Patankar S. V., 1981, NUMERICAL HEAT TRANS

[8] RANK DEPENDENCE OF N2O EMISSION IN FLUIDIZED-BED COMBUSTION OF COAL [J].

PELS, JR ;

WOJTOWICZ, MA ;

MOULIJN, JA .

FUEL, 1993, 72 (03) :373-379

[9] THE EFFECTIVENESS OF MULTIFUEL REBURNING IN AN INTERNALLY FUEL-STAGED BURNER FOR NOX REDUCTION [J].

SMART, JP ;

MORGAN, DJ .

FUEL, 1994, 73 (09) :1437-1442

[10]

SMITH DJ, 1992, POWER ENG, V96, P25

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