Abstract: Rich natural gas is first compressed, then ambient air cooled and separated into lean natural gas, NGL and water. Hydrate formation during decompression of the lean gas is precluded by either heating the lean natural gas or mixing the lean natural gas with methanol or other additive before depressurization. Similarly, hydrate formation in the NGL is also precluded by either heating the NGL or mixing the NGL with methanol or other additive before depressurization. The NGL is conditioned for storage and transport in common propane tanks by a stabilizer or two-phase separator. The lean natural gas can be used for internal combustion, liquefied natural gas, compressed natural gas or liquid fuel processing.

Abstract: Volatile organic compounds are removed from crude oil by adding an amount of stabilization energy to crude oil upstream of, or directly into, a crude oil stock storage tank or by recovering and condensing vapors from tank vent gas. Produced gas may be recovered as NGL in one or more cooling stages. Produced gas, whether partially recovered or not, may be used as fuel for the heater treater, other combustion device or compressed into a pipeline.

Abstract: Internal combustion engine heat is recovered by charge air for useful work and to increase engine thermal efficiency. A dual liquid/air cooling system is presented to facilitate heat recovery. Water is injected into a pintle-regulated Venturi to mitigate the engine charge temperature, control the combustion temperature and reduce NOx emissions.

Abstract: Ambient air is fed through a double wall pipe exhaust and subsequently directed into a pintle regulated Venturi. Fuel is vaporized and mixed homogeneously with air in the Venturi throat. The mixture is homogeneous at all throttle loadings because the pintle flow regulating valve maintains a high velocity at the Venturi throat. Water is injected into the Venturi throat to regulate the air/fuel charge temperature and, consequently, auto-ignition timing for a Homogeneous Charge Compression Ignition (HCCI) engine.