Oil and water separation and waste water evaporation and concentration heat pump system device of oilfield oil extraction gas gathering and transportation station

Abstract

The invention relates to an oil and water separation and waste water evaporation and concentration heat pump system device of an oilfield oil extraction gas gathering and transportation station. The technical problem that during existing oil and water separation, energy waste is large is solved. The system device comprises a producing well opening solar saline solution heat collecting and storingpool heat exchange device, a three-level sewage evaporating cooling purifying heat pump device system, a gas gathering and transportation station entry pre-treatment oil and water separation tank heating and pipeline connecting system, a good oil purifying oil tank system, an oil refinery, an electric auxiliary steam generation furnace system, a reverse cleaning waste water three-level evaporationand concentration drying heat pump device system, a sewage treatment system and a reinjection water well. The device has the advantages that the purifying efficiency is improved, the reinjection water capacity of the reinjection well can be improved, renewable energy sources are used as much as possible for serving as thermal energy, the temperature of reinjection water can be reduced, the wastewater discharge pollution can be reduced, and the possibility of smoke pollution generated by a combustion furnace can be avoided.

Description

technical field [0001] The invention belongs to the technical field of heat pump equipment, and in particular relates to a heat pump system device for oil-water separation and waste water evaporation and concentration in an oil production gathering station in an oil field. Background technique [0002] The oil production gathering and transportation system is usually after the high water content oil is collected to the ground, according to the oil outlet temperature and transmission distance, as well as the local climate characteristics, it is only transported with heat preservation or heated by a fuel combustion furnace to the gathering station / combined station. In the station, the fuel-burning furnace is used for step-by-step heating to 45-55°C for oil-water separation / purification. The good oil is kept warm and exported. After the sewage enters the sewage treatment plant for deep purification, the pressure pump injects water into the re-injection well. The heating heat so...

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Problems solved by technology

[0004] Although the above scheme has alleviated the problem of low utilization rate of waste heat in the oilfield to a certain extent, the scheme still has the following problems: low sewage reuse rate during oil-water separation, and the need for natural gas for heating, which is not environmentally friendly.

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