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Prediction of Chemical Changes in Bed Material for Pressurized Fluidized Bed Combustors

IP.com Disclosure Number: IPCOM000218567D
Publication Date: 2012-Jun-05
Document File: 1 page(s) / 37K

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PREDICTION OF CHEMICAL CHANGES IN BED MATERIAL FOR PRESSURIZED FLUIDIZED BED COMBUSTORS

BY

                   E. A. M. Gbordzoe
The
M.W. Kellogg Company, Three Greenway Plaza, Houston,Tx77046

and


V. Zakkay

Antonio Ferri Laboratories, New York University, 425 Merrick Avenue, Westbury, N.Y. 11590

ABSTRACT

Good fluidization and trouble-free operation of a Pressurized Fluidized Bed Combustor (PFBC)depend onthe chemical composition of the bed material in addition to other factors. Before a bed material is selected, consideration shouldnot onlybe focused on

@ sulfur capturebut also on the potential for the bed ashto agglomerate,which can lead to deterioration inoperationand premature shut down of the bed. Agglomeration tendencies in a PFBC canbe traced to the sodium contentof the bed material.

A model based on general elutriation principles has been developed to predict PFBC bed material chemical compositionwith time. The model predictions are inexcellent agreementwith available test data.