Furnaces – Process – Burning pulverized fuel
Patent
1994-08-25
1995-11-07
Gromada, Denise L.
Furnaces
Process
Burning pulverized fuel
110245, 122 4D, 16510416, 422145, 422146, F23D 100
Patent
active
054639689
ABSTRACT:
A fluidized bed combustion system and method in which a recycle heat exchanger is located adjacent the furnace section of the recycle heat exchanger. Heat exchange surfaces are provided in a compartment of the recycle heat exchanger for removing heat from the solids, and a bypass compartment is provided through which the solids directly pass to the furnace during start-up and low load conditions. The flow of solids between compartments is selectively controlled and an L-valve connects one of the compartments to the furnace section. Air is passed into the L-valve to promote the flow of the separated materials from the latter compartment to the furnace. The flow rate of the air is modulated to vary the duty of the recycle heat exchanger.
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Foster Wheeler Energy Corporation
Gromada Denise L.
Naigur Marvin A.
Tinker Susanne C.
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