Improvement of low load combustion stability for advanced low NOx burner

被引：0

作者：

Kimoto, M

Ikeda, M

Makino, H

Kiga, T

Endo, Y

机构：

[1] Cent Res Inst Elect Power Ind, Chem Energy Engn Dept, Yokosuka, Kanagawa 2400196, Japan

[2] Ishikawajima Harima Heavy Ind Co Ltd, Combust Engn Dept, Power Plant Div, Koto Ku, Tokyo 1358733, Japan

[3] Ishikawajima Harima Heavy Ind Co Ltd, Power Plant Div, Basic Design Dept, Grp 2,IHI,Koto Ku, Tokyo 1358733, Japan

来源：

JSME INTERNATIONAL JOURNAL SERIES B-FLUIDS AND THERMAL ENGINEERING | 1998年 / 41卷 / 04期

关键词：

combustion; burner; ignition; fossil fuel fired power generation;

D O I：

10.1299/jsmeb.41.1071

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The combustion technology which carries out both low NO, emission and low load stable combustion is desired in pulverized coal-fired power plants. A new advanced low NOx burner which can reduce NOx concentration and unburned carbon concentration in fly ash to 100 ppm and 3% respectively, had already been developed. To improve the combustion stability of this burner at lower loads, an adjustment method to raise the local concentration of coal by placing a ring in the primary air nozzle was invented. The combustion stability and the emission characteristics of NOx and unburned carbon in flp ash were investigated with a test furnace having a coal feed rate of 100 kg/h. The burner equipped with a ring achieves stable combustion at 20% load as like an oil burner by the adjustment of the local coal concentration. At higher load, the burner equipped with a ring maintains the same emission characteristics of NOx and unburned carbon in fly ash with the new advanced low NOx burner.

引用

页码：1071 / 1078

页数：8