F - Mech Eng,Light,Heat,Weapons – 17 – C
Patent
F - Mech Eng,Light,Heat,Weapons
17
C
60/2, 162/29
F17C 7/02 (2006.01)
Patent
CA 1240917
ABSTRACT A flameless nitrogen liquid to gas converter for providing high pressure nitrogen gas to treat oil and gas wells. A diesel engine prime mover drives hydraulic pumps and motors to pressurize nitrogen and actuate a closed-loop water system and a series of heat exchang- ers. The closed-loop water system provides heat for converting the liquid nitrogen to gaseous nitrogen which is obtained from the engine jacket water, the engine exhaust and the hydraulic oil from the hydraulic pumps and motors. Additional heat can be obtained from the hydraulic oil system by increasing the hydraulic system pressure with an hydraulic pressure control valve. At least one of the hydraulic pumps and its driven hydrau- lic motor is in an hydraulic circuit which includes variable means for increasing the pressure in the hydraulic circuit, hydraulic oil-water heat exchanger and an hydraulic oil reservoir. Hydraulic fluid from the other pumps and motors is transmitted through the hydraulic oil-water heat exchanger. The system includes a closed-loop water heat exchange system having in series in the water flow line upstream to downstream the following components in the following order: engine water - water heat exchanger, hydraulic oil - water heat exchanger, engine exhaust - water heat exchanger, nitro- gen - water heat exchanger, and a centrifugal water pump capable of 100 gallons per minute at 60 psi. - 2 -
442790
Davis Warren E.
Granger Donald W.
Davis Warren E.
Granger Donald W.
Kirby Eades Gale Baker
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