The effect of microwave radiation on coal grindability

被引：123

作者：

Marland, S ^{[1
]}

Han, B ^{[1
]}

Merchant, A ^{[1
]}

Rowson, N ^{[1
]}

机构：

[1] Univ Birmingham, Sch Chem Engn, Birmingham B15 2TT, W Midlands, England

来源：

FUEL | 2000年 / 79卷 / 11期

关键词：

microwave exposure; grindability; heat treatment;

D O I：

10.1016/S0016-2361(99)00285-9

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：

Coals of various ranks were exposed to microwave radiation to quantify the effect on grindability. Reductions of up to 50% of the relative grindability of the coals were reported after 5 min microwave exposure. These are believed to be a combination of fracture mechanisms, inherent moisture within the coal structure changing phase under considerable pressure and differential expansion by gangue mineral components. The overall effect of microwave radiation on the coal calorific value was minimal and compares equally to conventional drying techniques. Future work will include scaling up to pilot plant level (50-100 kg/h) to allow an accurate techno-economic assessment of the process. (C) 2000 Elsevier Science Ltd. All rights reserved.

引用

页码：1283 / 1288

页数：6