Analyzing the inadaptability of uniform air distributing burner for bituminite with high slagging property

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20006885

Guojun, Sun; Yizhi, Gu; Hao, Zhou ^[1]

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1. and others

In the traditional pulverized coal tangential firing boiler design, the uniform air distributing burner is always adopted to burn bituminite with fine ignitability, a good furnace flame coefficient of fullness and coal powder burn-off rate can be obtained. But such assemblage also results in inadaptability for coal quality, furnace slagging while burning clinkering coal, and a local high temperature zone, and uniform air distribution also leads to high emission of thermal NOx and fuel NOx. Using uniform air distribution burner also results in bad flame stability at low load and the severe twisting residual at furnace exit. In this paper, a kind of combination burner system is developed by moving the upper primary air to a lower location and using a horizontal fuel-rich and lean burner. The modeling test and numerical simulation are used to prove the scheme's feasibility; the hot test illustrates that the scheme is correct.

• Research Organization: Zhejiang Univ., Hangzhou (CN)
• OSTI ID: 20006885
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
ASH CONTENT
BOILERS
BURNERS
CHEMICAL REACTION YIELD
CHINA
COAL
COMBUSTION
DESIGN
FLOW MODELS
FUEL-AIR RATIO
NITROGEN OXIDES
PERFORMANCE TESTING