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US 2022/0065447 A1Published application
Velocity damper for a recovery boiler
AssigneeAndritz Inc.
InventorsJohn Phillips, David Watson
Life of this patent
Estimating the term…
Abstract
A damper for a furnace, the damper including an air port damper body engaged to an air port opening of a furnace; and at least one velocity plate in hinged engagement to the air port damper body so that an air controlling end surface of the at least one velocity plate is substantially aligned to a wall of the furnace at the air port opening when the at least one velocity plate is in a fully opened position.
Claims16
A damper for a furnace, the damper comprising:
- an air port damper body engaged to an air port opening of the furnace;
- and
- at least one velocity plate in hinged engagement to the air port damper body so that an air controlling end surface of the at least one velocity plate is substantially aligned to a wall of the furnace at the air port opening when the at least one velocity plate is in a fully opened position.
A method for controlling airflow into a furnace comprising:
- engaging a velocity type damper to an air port opening of a furnace, in which the velocity type damper includes at least one air controlling surface that is engaged to an air port damper body and positioned proximate to a wall of the furnace at the air port opening so that air velocity exiting the at least one air controlling surface is substantially equal to the air velocity entering the air port opening to the furnace;
- and
- adjusting a cross sectional area through the velocity type damper to control air velocity into the furnace through the air port opening.
Dependencies are inferred from the claim text.