A MODEL FOR BUBBLE-INDUCED EROSION IN FLUIDIZED-BED COMBUSTORS AND COMPARISON WITH EXPERIMENT

被引：7

作者：

GANSLEY, RR

OBRIEN, TJ

机构：

[1] Morgantown Energy Technology Center, U.S. Department of Energy, Morgantown, WV 26507-0880

来源：

WEAR | 1990年 / 137卷 / 01期

关键词：

D O I：

10.1016/0043-1648(90)90021-2

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

A simple model is developed for the erosion of surfaces in a fluidized-bed combustor as a result of particle motion induced by bubbles. Davidson's bubble model, used to describe particle motion in a fluidized bed, and Finnie's erosion model, which describes erosion due to the particle motion, are combined to give an expression for the erosion of a surface by the passage of a bubble. This erosion model predicts a strong dependence on bubble size and the distance between the bubble and the eroding surface: erosion increases for larger bubbles and smaller distances. The model is compared with two experimental studies, and agreement of better than an order of magnitude is obtained. © 1990.

引用

页码：107 / 127

页数：21

共 37 条

[1]

Bitter J. G. A., 1963, WEAR, V6, P169, DOI [10.1016/0043-1648(63)90073-5, DOI 10.1016/0043-1648(63)90073-5]

[2]

Bitter J. G. A., 1963, WEAR, V6, P5, DOI [10.1016/0043-1648(63)90003-6, DOI 10.1016/0043-1648(63)90003-6, 10.1016/]

[3]

BLAKE TR, 1985, DOEMC164401937

[4]

Botterill JSM., 1975, FLUID BED HEAT TRANS

[5] LARGE PARTICLE FLUIDIZATION [J].

CRANFIELD, RR ;

GELDART, D .

CHEMICAL ENGINEERING SCIENCE, 1974, 29 (04) :935-947

[6]

Davidson J.F., 1963, FLUIDIZED PARTICLES

[7]

Davidson J.F, 1961, TRANS INST CHEM ENG, V39, P230

[8] WEAR OF 6061 ALUMINUM TEST SPECIMENS DURING AN IN-BED EXPOSURE TO AN AFB COLD MODEL ENVIRONMENT [J].

DENNIS, RA .

WEAR, 1989, 131 (02) :241-250

[9]

FINNIE I, 1967, J MATER, V2, P682

[10]

Finnie I., 1960, WEAR, V3, P87, DOI [DOI 10.1016/0043-1648(60)90055-7, 10.1016/00431648(60)90055-7]

← 1 2 3 4 →