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US 6,669,472 B1Granted
Dual lift system
AssigneeMegtec Systems, Inc.
InventorsJames T. Cash, Ken Wendorf, Glenn Schmidt
Life of this patent
Estimating the term…
Abstract
Valve and valve lift system suitable for use in a regenerative thermal oxidizer, and oxidizer including the switching valve. The valve of the present invention exhibits excellent sealing characteristics and minimizes wear. In a preferred embodiment, the valve is sealed with pressurized air during its stationary modes, and unsealed during movement to reduce valve wear.
Claims8
A regenerative thermal oxidizer for processing a gas, comprising:
- a combustion zone;
- an exhaust;
- a first heat exchange bed containing heat exchange media and in communication with said combustion zone and with said exhaust;
- a second heat exchange bed containing heat exchange media and in communication with said combustion zone and with said exhaust;
- at least one valve for alternating between a first stationary mode allowing the flow of said gas into said first heat exchange bed, a moving mode, and a second stationary mode allowing the flow of gas into said second heat exchange bed, said valve comprising a valve drive and a valve seat;
- means for sealing said valve against said valve seat when said valve is in said first or second stationary mode;
- and
- means for unsealing said valve when said valve is in said moving mode.
5 more elements
Dependencies are inferred from the claim text.