Flow Characteristic of a New Type of Double-Channel Air Burner in Direct Flow Pulverized Coal Boiler

Jian Guo Yang; Hai Ming Yu; Li An Fan; Hong Zhao

doi:10.4028/www.scientific.net/AMR.614-615.59

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Process Simulation of Oil Shale Circulating Fluidized Bed Boiler Based on Aspen Plus
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Effects of Hydrothermal Dewatering on Kinetics and Mechanism of Brown Coals Pyrolysis
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Flow Characteristic of a New Type of Double-Channel Air Burner in Direct Flow Pulverized Coal Boiler
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Thermodynamic Performance of an Actual Thermo-Acoustic Refrigeration Micro-Cycle
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Relationship between Heating Value and Proximate Analysis of Oil Shale
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Numerical Study on the Premixed Combustion in Porous Media Burner
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 614-615Flow Characteristic of a New Type of...

Flow Characteristic of a New Type of Double-Channel Air Burner in Direct Flow Pulverized Coal Boiler

Abstract:

Tangentially-fired burner is widely used in pulverized coal boiler, but its air burner has some shortcomings, including the velocity of exit airflow weaken with the decrease of the opening degree of the air damper, leading to insufficient mixing between air and coal-powder. In view of the existing problems, a new type of double-channel air burner had been designed. Its flow field and adjustment characteristic were studied by using numerical simulation method. The results showed the double-channel air burner had effective flow adjustment characteristic which closely linearity. One of the channels could keep higher exit velocity when the air volume decrease and it could fulfill the demand of air adjustment better while in low NOx combustion or load variation.

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Periodical:

Advanced Materials Research (Volumes 614-615)

Pages:

59-63

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.614-615.59

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Online since:

December 2012

Authors:

Jian Guo Yang, Hai Ming Yu, Li An Fan, Hong Zhao

Keywords:

Adjustment Characteristic, Double-Channel Air Burner, Numerical Simulation, Tangentially-Fired Burner, Velocity of Exit Airflow

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