scholarly journals Atmospheric fluidized bed combustor development program. Final report

1995 ◽  
Author(s):  
R.A. Ashworth ◽  
T.A. Melick ◽  
D.A. Plessinger ◽  
T.M. Sommer ◽  
H.M. Keener ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Development Program ◽  
Final Report ◽  
Fluidized Bed Combustor

scholarly journals The Gas Turbine Heat Exchanger in the Fluidized Bed Combustor

1982 ◽  
Author(s):  
C. F. Holt ◽  
A. A. Boiarski ◽  
H. E. Carlton
Keyword(s):  
Heat Exchanger ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Gas Turbine ◽  
Fluidized Bed ◽  
Development Program ◽  
Low Oxygen ◽  
Bed Temperature ◽  
Technical Effort ◽  
Fluidized Bed Combustor

In a current research and development program a coal fired atmospheric fluidized bed combustor is being designed to supply the heat to a closed cycle gas turbine cogeneration system. The major technical effort is directed towards the design of the in-bed heat exchanger, which is required to operate near bed temperature. This high temperature (850 C) exposes the heat exchanger tubes to potentially severe sulfidation. The corrosion behavior depends upon the intimate details of the bed environment and may be related to the occurrence of localized areas of low oxygen partial pressure and high sulfur partial pressure. This paper describes a series of measurements of oxygen partial pressure at various locations within a fluidized bed. The bed, containing densely packed heat exchanger tubes, was operated under various conditions to observe the effect of coal mixing and devolatilization on local oxygen activity. Substantial variations of oxygen partial pressure (below 10−14 atmospheres) were observed. It was noted that these locally severe variations could be substantially modified by changes in coal mixing (as through coal port design). The experiments with varying coal size suggest that rapid devolatilization is desirable and would reduce the extent of locally corrosive environments.

The Gas Turbine Heat Exchanger in the Fluidized Bed Combustor

1983 ◽  
Vol 105 (3) ◽  
pp. 438-445 ◽  
Author(s):  
C. F. Holt ◽  
A. A. Boiarski ◽  
H. E. Carlton
Keyword(s):  
Heat Exchanger ◽  
Oxygen Partial Pressure ◽  
Partial Pressure ◽  
Gas Turbine ◽  
Fluidized Bed ◽  
Development Program ◽  
Low Oxygen ◽  
Bed Temperature ◽  
Technical Effort ◽  
Fluidized Bed Combustor

In a current research and development program a coal-fired atmospheric fluidized bed combustor is being designed to supply the heat to a closed cycle gas turbine cogeneration system. The major technical effort is directed towards the design of the in-bed heat exchanger, which is required to operate near bed temperature. This high temperature (850° C) exposes the heat exchanger tubes to potentially severe sulfidation. The corrosion behavior depends upon the intimate details of the bed environment and may be related to the occurrence of localized areas of low oxygen partial pressure and high sulfur partial pressure. This paper describes a series of measurements of oxygen partial pressure at various locations within a fluidized bed. The bed, containing densely packed heat exchanger tubes, was operated under various conditions to observe the effect of coal mixing and devolatilization on local oxygen activity. Substantial variations of oxygen partial pressure (below 10−14 atmospheres) were observed. It was noted that these locally severe variations could be substantially modified by changes in coal mixing (as through coal port design). The experiments with varying coal size suggest that rapid devolatilization is desirable and would reduce the extent of locally corrosive environments.

scholarly journals Final Report, Project: Enabling Technologies for Oxy-fired Pressurized Fluidized Bed Combustor Systems

2019 ◽  
Author(s):  
Mark Fitzsimmons ◽  
Doug M. Heim ◽  
William W. Follett ◽  
Stevan Jovanovic ◽  
Makini Byron ◽  
...  
Keyword(s):  
Fluidized Bed ◽  
Final Report ◽  
Enabling Technologies ◽  
Fluidized Bed Combustor

Gas flow in a pressurized fluidized-bed combustor

1988 ◽  
Vol 56 (3) ◽  
pp. 157-163 ◽  
Author(s):  
J. Thýn ◽  
Z. Kolar ◽  
W. Martens ◽  
A. Korving
Keyword(s):  
Fluidized Bed ◽  
Gas Flow ◽  
Fluidized Bed Combustor
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