Combustion behavior of CWPs in a fluidized bed combustor

被引：0

作者：

Kuroki, H ^{[1
]}

Fujiwara, N

Horio, M

机构：

[1] Idemitsu Kosan Co Ltd, Energy Dev Dept, Coal Res Labs, Chiba 29902, Japan

[2] Tokyo Univ Agr & Technol, Dept Chem Engn, Tokyo 184, Japan

来源：

KAGAKU KOGAKU RONBUNSHU | 1997年 / 23卷 / 06期

关键词：

Coal Water Paste; fluidized bed combustion; PFBC;

D O I：

10.1252/kakoronbunshu.23.920

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Combustion behavior of CWP (Coal Water Paste) fuels made of 15 types of coals was observed by using a small atmospheric bubbling fluidized bed combustor made with a quartz tube. Ignition delay, flame combustion time and char combustion time were measured and compared with those of dry coal. From these observation, the combustion behavior of CWPs was classified into three different modes. Some CWP aggregate broke up already during drying and their coal particles burned separately as in the case of dry coal combustion (mode 1). Combustion aggregates that maintained their size during the flame combustion period were classified as mode 2. Some CWP aggregates bursted into small pieces during the flame combustion period (mode 3). Burn out times of mode 2 and mode 3 CWPs were much longer than those of the dry coal combustion. It was found that the factor governing the combustion behavior of CWPs is the crucible swelling number of coal. The relation between the combustion modes and the prescription for CWPs was also studied.

引用

页码：920 / 927

页数：8

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