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Title: Strengthen flame stability during the furnace`s load decrease

Abstract

This paper presents the result of the study of the coal combustion characteristic and flame stability during the load decrease of PCFF (corner burner arrangement). Considering the relation between flame stability and furnace load during the furnace load change, some method must be used to strengthen the pulverized coal ignition and combustion for the furnace to maintain the flame stability especially for the furnace which fires low rank anthracite. Experimental results show that when the furnace load decreased, the temperature distribution in furnace decreased and the flame stability in furnace had changed because of the load changing. This paper also introduces a new pulverized coal burner: Bluff-body with cavity burner. According to the result of application of this burner, this kind of pulverized coal burner can improve the coal ignition and combustion efficiency. Especially for low load operation of furnace the bluff-body with cavity burner has demonstrated its ability in strengthening coal ignition and improving the flame stability for furnace operation. Experimental results show that using bluff-body with cavity burner, the lowest load for furnace fired bituminous is 40% MCR and 50% MCr for low rank anthracite (V{sup r} < 12%, A{sup f} > 45%). This burner has simple structuremore » and is very easy to set up for furnace.« less

Authors:
; ; ; ;  [1]
  1. HuaZhong Univ. of Science and Technology, Wuhan, Hubei (China)
Publication Date:
OSTI Identifier:
549555
Report Number(s):
CONF-960954-
TRN: IM9751%%238
Resource Type:
Conference
Resource Relation:
Conference: 13. annual international Pittsburgh coal conference, Pittsburgh, PA (United States), 3-7 Sep 1996; Other Information: PBD: 1996; Related Information: Is Part Of Thirteenth annual international Pittsburgh coal conference: Proceedings. Volume 2; Chiang, S.H. [ed.]; PB: 819 p.
Country of Publication:
United States
Language:
English
Subject:
01 COAL, LIGNITE, AND PEAT; COAL; COMBUSTION CONTROL; FLAMES; STABILITY; FURNACES; LOAD MANAGEMENT; ANTHRACITE; BITUMINOUS COAL; BURNERS; DESIGN; PULVERIZED FUELS

Citation Formats

Zhiguo, Zhang, Xuexin, Sun, Fujin, Li, Jihua, Qiu, and Gang, Chen. Strengthen flame stability during the furnace`s load decrease. United States: N. p., 1996. Web.
Zhiguo, Zhang, Xuexin, Sun, Fujin, Li, Jihua, Qiu, & Gang, Chen. Strengthen flame stability during the furnace`s load decrease. United States.
Zhiguo, Zhang, Xuexin, Sun, Fujin, Li, Jihua, Qiu, and Gang, Chen. 1996. "Strengthen flame stability during the furnace`s load decrease". United States.
@article{osti_549555,
title = {Strengthen flame stability during the furnace`s load decrease},
author = {Zhiguo, Zhang and Xuexin, Sun and Fujin, Li and Jihua, Qiu and Gang, Chen},
abstractNote = {This paper presents the result of the study of the coal combustion characteristic and flame stability during the load decrease of PCFF (corner burner arrangement). Considering the relation between flame stability and furnace load during the furnace load change, some method must be used to strengthen the pulverized coal ignition and combustion for the furnace to maintain the flame stability especially for the furnace which fires low rank anthracite. Experimental results show that when the furnace load decreased, the temperature distribution in furnace decreased and the flame stability in furnace had changed because of the load changing. This paper also introduces a new pulverized coal burner: Bluff-body with cavity burner. According to the result of application of this burner, this kind of pulverized coal burner can improve the coal ignition and combustion efficiency. Especially for low load operation of furnace the bluff-body with cavity burner has demonstrated its ability in strengthening coal ignition and improving the flame stability for furnace operation. Experimental results show that using bluff-body with cavity burner, the lowest load for furnace fired bituminous is 40% MCR and 50% MCr for low rank anthracite (V{sup r} < 12%, A{sup f} > 45%). This burner has simple structure and is very easy to set up for furnace.},
doi = {},
url = {https://www.osti.gov/biblio/549555}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}

Conference:
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