Back to results
US 7,325,562 B2Granted
Heated seal air for valve and regenerative thermal oxidizer containing same
AssigneeMeggec Systems, Inc.
InventorJames T. Cash
Life of this patent
Estimating the term…
Abstract
Valve with heated sealing gas 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 utilizes hot gas from the regenerative process to heat gas for sealing the valve, and sealing air flows through a heat exchanger that is positioned to be in contact with hot exhaust gas from the regenerative process.
Claims13
A valve assembly, comprising:
- a source of sealing gas;
- a source of hot gas having a temperature higher than the temperature of said sealing gas;
- a heat exchanger having an inlet and an outlet, said inlet being in fluid communication with said source of sealing gas such that said sealing gas enters said inlet, flows through said heat exchanger and exits said outlet, said sealing gas being heated while flowing through said heat exchanger, said heat exchanger being heated by said hot gas;
- a valve including at least one sealing interface;
- and a delivery conduit in fluid communication with said outlet of said heat exchanger and with said at least one sealing interface to deliver said heated sealing gas to said interface.
2 more elements
Dependencies are inferred from the claim text.