Resources Contact Us Home
Nitrogen liquid to gas converter

Image Number 6 for United States Patent #4290271.

A flameless nitrogen liquid to gas converter for providing high pressure nitrogen as to treat oil and gas wells. A diesel engine prime mover drives hydraulic pumps and motors to pressurize nitrogen and actuate an air fan. Heat for converting the liquid nitrogen to gaseous nitrogen 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 a hydraulic pressure control valve. At least one of the hydraulic pumps and its driven hydraulic motor is in a hydraulic circuit which includes variable means for increasing the pressure in the hydraulic circuit, a hydraulic oil-air heat exchanger, and a hydraulic oil reservoir. Hydraulic fluid from the other pumps and motors is transmitted through the hydraulic oil-air heat exchanger. The system includes an in-line heat exchange system in series in the air flow from upstream to downstream in the following order: hydraulic oil-air heat exchanger, engine water-heat exchanger, engine exhaust-air heat exchanger, nitrogen-air heat exchanger, and an air suction fan.

  Recently Added Patents
Organic light emitting diode device and fabrication method thereof
Circuitry for measuring and compensating phase and amplitude differences in NDT/NDI operation
Video reproducing apparatus and video reproducing method
Methods, systems and apparatus for displaying the multimedia information from wireless communication networks
Aromatic amine derivative, organic electroluminescent element employing the same, and process for producing aromatic amine derivative
Method and device for operating a vehicle having a hybrid drive
Documentation roadmaps and community networking for developers on large projects
  Randomly Featured Patents
Polyalkylene grafted centipede polymers
Process for producing copper-based alloys having high strength and high electric conductivity
Colloidal dispersions of inorganic particles in liquid phases comprising ampholytic copolymers
Apparatus and program for image processing for obtaining processed compressed moving image data
Grease gun plunger
Baking pan
Thermal energy therapy
Making solder ball mounting pads on substrates
System and method for generating 'snapshot's of learning objects