Vapor recovery apparatus and method
AssigneeEdwards Engineering Corporation
InventorRichard Waldrop
Life of this patent
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Abstract
A vapor recovery apparatus consumes a source of liquified gas to condense vapors in a source of vapors. The apparatus includes an economizing heat exchanger and a finishing heat exchanger. The economizing heat exchanger has a vapor path adapted to be connected to the source of vapors, and a recovery path for exchanging heat with, and cooling vapors in, the vapor path. The finishing heat exchanger has a finishing path connected downstream of the vapor path of the economizing heat exchanger, and a coolant path adapted to be connected to the source of liquified gas for cooling and condensing vapors in the finishing path. The coolant path is isolated from the finishing path to avoid interpath mixing. The finishing path is connected to feed the recovery path of the economizing heat exchanger.
Claims62
A vapor recovery apparatus consuming a source of liquified gas to condense vapors in a source of vapors, comprising:
- an economizing heat exchanger having a vapor path adapted to be connected to said source of vapors, and a recovery path for exchanging heat with and cooling vapors in said vapor path;
- and
- a finishing heat exchanger having a finishing path connected downstream of said vapor path of said economizing heat exchanger, and a coolant path adapted to be connected to said source of liquified gas for cooling and condensing vapors in said finishing path, said coolant path being isolated from said finishing path to avoid interpath mixing, said finishing path being connected to feed said recovery path of said economizing heat exchanger.
A vapor recovery apparatus consuming a source of liquified gas to condense vapors from an active unit employing a refrigeration unit circulating a cooling medium in a closed cycle through a condensing apparatus, comprising:
- an economizing heat exchanger having a vapor path adapted to be connected to said active unit, and a recovery path for exchanging heat with and cooling vapors in said vapor path;
- and
- a finishing heat exchanger having a finishing path connected downstream of said vapor path of said economizing heat exchanger, and a coolant path adapted to be connected to said source of liquified gas for cooling and condensing vapors in said finishing path, said coolant path being isolated from said finishing path to avoid interpath mixing, said finishing path being connected to feed said recovery path of said economizing heat exchanger.
A method for condensing and recovering vapor from a source of vapor with a source of liquified gas, an economizing heat exchanger having a vapor and recovery path, and a finishing heat exchanger having a finishing and coolant path, comprising the steps of:
- directing said source of vapor through the vapor path of said economizing heat exchanger, and through the finishing path of said finishing heat exchanger;
- supplying said liquified gas to the coolant path of said finishing heat exchanger to cause vapor in said finishing path to condense without mixing with said liquified gas in its liquid or gaseous form;
- feeding gas from the finishing path of said finishing heat exchanger to the recovery path of said economizing heat exchanger to cool vapor in the vapor path.
Dependencies are inferred from the claim text.