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US 4,226,605 AGranted
Flameless vaporizer
AssigneeAirco, Inc.
InventorFrank Van Don
Life of this patent
Estimating the term…
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AssigneeAirco, Inc.
InventorFrank Van Don
Estimating the term…
A liquid-vapor converter of a compact skid-mounted design is provided that efficiently converts a cryogenic liquid into a vapor, and which includes, in the same skid mounting, all necessary components necessary to receive the liquid and to provide therefrom a high pressure source of gas, particularly for use in recovery of product from oil wells. The design includes an internal combustion engine as a motive force to drive the main pump for pressurizing the vapor for its intended use. A heat exchanger receives the liquid and circulates the same through tubing, where the liquid is vaporized in the heat exchanger by ambient air being passed across the tubing to warm the liquid, thus effecting such vaporization. The heat exchanger utilizes heat from the engine exhaust to preheat the incoming ambient air prior to its passing in heat transfer relationship across the tubing. In addition, further heat may be provided to the incoming ambient air by positioning the engine radiator and/or the hydraulic oil cooler in the ambient air stream inlet. The overall converter is particularly adapted for use in oil well drilling locations where extreme care must be taken to avoid open flame or fires, such as off-shore drilling rigs.
A compact, self-contained ambient air vaporizer in combination with an internal combustion engine having a radiator and an exhaust system, and pumping means operated by said internal combustion engine, said vaporizer comprising a heat exchanger having an ambient air inlet chamber and an outlet chamber, means to pass ambient air in a path from said inlet chamber to said outlet chamber, tubing means within said heat exchanger and located in the path of said ambient air, said tubing means adapted to receive liquid cryogenic substance from said pumping means, said ambient air providing heat to said cryogenic substance to warm said substance for conversion to a gas, and heating means comprising said internal combustion engine radiator in the inlet chamber of said heat exchanger, said heating means adapted to transfer heat derived from said internal combustion engine to warm the ambient air entering said inlet chamber.
A compact, skid-mounted ambient air vaporizer for converting liquid cryogenic substance into a high pressure gas, said vaporizer comprising a frame, an internal combustion engine mounted on said frame, said internal combustion engine having associated therewith a radiator and an exhaust system, pumping means mounted on said frame and a heat exchanger mounted on said frame, said heat exchanger containing tubing having an inlet for receiving the liquid cryogenic substance and an outlet for discharging the gas converted from said liquid cryogenic substance, said heat exchanger further having a path therethrough for passing air in heat exchange relationship with said tubing, said path having an ambient air inlet chamber and an air outlet, said ambient air inlet having contained therein heating means comprising said internal combustion engine radiator to utilize heat derived from said internal combustion engine to provide heat to said ambient air passing through said inlet chamber and means to cause said air to flow from said inlet along said path to said outlet thereby warming said liquid cryogenic substance to convert said liquid substance to a gaseous form, said pumping means adapted to receive and pressurize the liquid nitrogen to a predetermined high pressure for introduction thereof into said heat exchanger inlet.
A compact, skid-mounted ambient air vaporizer for converting liquid nitrogen into a high pressure gas suitable for introduction into an oil well for product recovery, said vaporizer comprising:
Dependencies are inferred from the claim text.