NDLI: Using CFD to Model Coal Roping Phenomenon in Coal Transport Systems

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Huang, Gengxun Kenneth, M. Bryden Vasquez, Edmundo Avancha, Ravikanth
Copyright Year	2004
Abstract	Coal roping is a well-known phenomenon occurring in pneumatic transport of pulverized coal. In coal roping the majority of the coal is concentrated in a small portion of the transport piping cross section. This region of concentrated solid flow is created by a number of factors. For example, as the two phase flow of air and coal travels through an elbow or turn in the coal transport piping the centrifugal forces exerted on the coal concentrate the coal on the outside edge of the elbow. After the coal rope is formed these particles will tend to travel together. Coal roping upstream of a coal distributor (bifuractor) can create a significant imbalance in coal loading between in the split between the two branches. This can result in unbalance coal loading between burners and ununiform coal injection in plant burners. This can significantly impact plant performance and increase NOx production. This paper examines how CFD model can be used to understand common creation and breakup mechanisms of coal roping.
Sponsorship	Power Division
Starting Page	753
Ending Page	759
Page Count	7
File Format	PDF
ISBN	0791841626
DOI	10.1115/POWER2004-52076
Conference Proceedings	ASME 2004 Power Conference
Language	English
Publisher Date	2004-03-30
Publisher Place	Baltimore, Maryland, USA
Access Restriction	Subscribed
Subject Keyword	Computational fluid dynamics Two-phase flow Particulate matter Ropes Coal Centrifugal force Nitrogen oxides Pipes Flow (dynamics)
Content Type	Text
Resource Type	Article

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