COAL COMBUSTION CHARACTERISTICS IN A FLUIDIZED-BED COMBUSTOR WITH A DRAFT TUBE

被引：15

作者：

LEE, WJ

CHO, YJ

KIM, JR

KIM, SD

机构：

[1] Department of Chemical Engineering, Korea Advanced Institute of Science and Technology, Taejon

来源：

KOREAN JOURNAL OF CHEMICAL ENGINEERING | 1992年 / 9卷 / 04期

关键词：

D O I：

10.1007/BF02705294

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The effects of gas velocity to draft tube (3-6 U(mf)), bed temperature (800-900-degrees-C) and excess air ratio (0-30%) on the total entrainment rate, overall combustion efficiency and heat transfer coefficient have been determined in an internally circulating fluidized bed combustor with a draft tube. The total entrainment rate increases with an increase in gas velocity to draft tube, but decreases with increasing bed temperature and excess air ratio. The overall combustion efficiency increases with increasing excess air ratio, but decreases with increasing gas velocity to draft tube. The overall combustion efficiency obtained in internally circulating fluidized beds was found to be somewhat higher than that in a bubbling fluidized bed combustor.

引用

页码：206 / 211

页数：6

共 18 条

[1]

LaNauze R.D., Powder Technol., 15, (1976)

[2]

Yang W.C., Keairns D. L, AIChE Symp. Ser., 74, (1978)

[3]

Kuramoto M., Kunii D., Furusawa T., Powder Technol., 47, (1986)

[4]

Choi Y.T., Kim S.D., J. Chem. Eng. Japan, 24, (1991)

[5]

Lee W.J., Kim S.D., Fluidization VII, (1992)

[6]

McCabe W.L., Smith J.C., Harriott P., Unit Operations of Chemical Engineering, (1985)

[7]

Benett C.O., Myers J.E., Momentum, Heat and Mass Transfer, (1974)

[8]

Muir J.R., Berruti F., Behie L.A., Chem. Eng. Commun., 88, (1990)

[9]

Choi J.H., Son J.E., Kim S.D., J. Chem. Eng. Japan, 22, (1989)

[10]

Geldart D., Gas Fluidization Technology, (1986)

← 1 2 →