CN210317272U - Oil-water separation and waste water evaporation concentration heat pump system device of oil field oil extraction gathering and transportation station - Google Patents

Abstract

The utility model relates to an oil field oil recovery gathering and transportation station oil water separation and waste water evaporation concentration heat pump system device. It is extravagant big scheduling technical problem of energy when having solved current oil water separation. The system comprises a heat exchange device of a solar saline solution heat collection and storage pool at the wellhead of an oil production well, a three-stage sewage evaporation cooling purification heat pump device system, a gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system, a good oil purification oil tank system, an oil refinery, an electric auxiliary steam generator system, a reverse cleaning waste water three-stage evaporation concentration drying heat pump device system, a sewage treatment system and a recharge water well. Has the advantages that: the purification efficiency is improved, the water reinjection capacity of the reinjection well can be enhanced, renewable energy is utilized as thermal energy as much as possible, the temperature of reinjection water is reduced, the wastewater discharge pollution is eliminated, and the possibility of smoke pollution caused by using a combustion furnace is avoided.

Description

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

Technical Field

The utility model belongs to the technical field of heat pump equipment, concretely relates to defeated station oil water separation of oil field oil recovery collection and waste water evaporation concentration heat pump system device.

Background

After high-water-content petroleum is collected to the ground, the petroleum is only subjected to heat preservation conveying or is heated and conveyed to a gathering and conveying station/combined station through a fuel combustion furnace according to the oil outlet temperature, the conveying distance and the local climate characteristics, the oil and water are separated/purified in the station through heating and heating to 45-55 ℃ in steps through the fuel combustion furnace, the good oil is subjected to heat preservation output, the sewage enters a sewage treatment plant for deep purification, water is injected into a reinjection well through a pressure pump, and a heating heat source in the process is usually provided to each heat exchanger through a coal-fired/oil-gas/steam boiler in a wall-type heat exchange mode through 0.2-0.4 MPa saturated steam. In the total heat, one part is used for heating and preheating incoming oil, the other part is the heat dissipation loss of equipment and pipelines, the other part is taken away by the good oil output after purification, and the other most part is discharged to a sewage treatment system along with sewage and then is reinjected to the ground, so that the most part of heat discharged along with the sewage is wasted. The waste water treatment system process usually comprises three stages of mechanical adsorption filtration purification, first-stage air flotation separation and final-stage ultrafiltration membrane deep purification, the operation energy consumption is large, and waste water generated in backwashing regeneration still needs to be subjected to secondary deep treatment so as to be discharged. Therefore, the improvement of the heat utilization rate during the oil-water separation in the oil extraction gathering and transportation system is an urgent problem.

In order to solve the problems of the prior art, people have long searched for various solutions, and for example, chinese patent literature discloses an oil field waste heat natural gas high-temperature heat pump process [ application No.: 200810015763.8]: the process utilizes the waste heat of oil well produced liquid or oil field sewage to obtain low-grade energy required by a heat pump through a heat exchanger, and the heat pump utilizes oil field natural gas as power, drives a heat pump system of a heat pump compressor through a natural gas engine, and recycles heat after the temperature is raised through a natural gas heat pump.

Although the problem that the utilization ratio of the oil field waste heat is low is alleviated to a certain extent by the scheme, the scheme still has the following steps: the recycling rate of sewage is low when oil-water separation is carried out, and the problem of environmental protection is not enough when natural gas is needed for heating.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide an utilize renewable energy to improve defeated station oil water separation of oil field oil recovery collection and waste water evaporation concentration heat pump system device of heat efficiency for the thermal energy.

In order to achieve the above purpose, the utility model adopts the following technical proposal: the oil field oil extraction gathering and transportation station oil-water separation and wastewater evaporative concentration heat pump system device is characterized by comprising a heat exchange device of a solar salt solution heat collection and storage pool of an oil production well mouth, wherein the heat exchange device of the solar salt solution heat collection and storage pool of the oil production well mouth is connected with a three-level sewage evaporative cooling and purification heat pump device system, the three-level sewage evaporative cooling and purification heat pump device system is sequentially connected with a gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system and a good oil purification oil tank system, the good oil purification oil tank system is connected with an oil refinery, an electric auxiliary steam generator system is arranged between the three-level sewage evaporative cooling and purification heat pump device system and the gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system, and the gathering and transportation station inbound pretreatment oil-water separation tank heating and three-level pipeline connecting system and the good oil purification oil tank system are connected with a reverse cleaning wastewater evaporative concentration drying The system is characterized in that the reverse cleaning wastewater three-stage evaporation concentration drying heat pump device system is connected with a recharge water well through a sewage treatment system.

When the system enters a normal working state, due to the addition of the heat energy of the sunlight heat collection and heat storage pool of the oil pumping wellhead, the oil-water mixture enters the gathering and transportation station, and then the temperature rise effect of the electric heat pump maintains about 45 ℃ in the oil-water separation tank and the good oil purification tank for separation and purification. And (3) evaporating and cooling the sewage after oil-water separation by a heat pump device, recovering heat energy, and injecting the sewage into a reinjection well by a pressure water pump after the sewage enters a sewage treatment system at the temperature of about 15 ℃. The backwashing wastewater is separated in a dry state by evaporating and concentrating solid solution. The direct effect is to utilize renewable energy as much as possible as thermal energy, eliminate the pollution of waste water discharge and reduce the temperature of reinjection sewage. The possibility of flue gas pollution is avoided because a combustion heating furnace is not used.

In the oil-water separation and waste water evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station, the heat exchange device of the solar saline solution heat collection and storage pool at the wellhead of the oil production well comprises an oil outlet pipe arranged in the oil production well, the oil outlet pipe is respectively connected with one end of an embedded coil heat exchanger in at least one ground construction pool body with a heat insulation structure, a light-transmitting heat insulation plate is arranged at the upper end of the ground construction pool body with the heat insulation structure, and a supersaturated saline solution is stored in the ground construction pool body with the heat insulation structure and the embedded coil heat exchanger is immersed in the supersaturated saline solution. Wherein, the upper end of the ground construction pool body with the heat preservation structure is provided with double-layer heat-insulation glass light-transmitting plates with equal area, the pool body is internally provided with saturated strong brine solution, and the salt solution is internally provided with a heat exchange coil and an inlet and outlet interface thereof. When the temperature of the oil-water mixture at the outlet of the oil production well is less than 40 ℃, the temperature of the coil pipe which is led into the saline solution heated to more than 60 ℃ by sunlight can be raised to more than 45 ℃ by valve control, thereby fully reducing the heating energy of the heating separation treatment process in the gathering and transportation station. The device can be arranged in a centralized or scattered way by 1-N according to the site conditions of the oil production well.

In the oil-water separation and wastewater evaporation concentration heat pump system device of the oil extraction gathering and transportation station in the oil field, the gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system comprises at least one oil-water static separation tank body which is connected in sequence, two adjacent oil-water static separation tank bodies are connected through an in-tank oil level outlet controller, the upper end of the oil-water static separation tank body is provided with a tank body respiration fire-retardant valve, the lower end is provided with an in-tank circulation reheating and air-floating releaser, the oil-water static separation tank body is connected with one end of an embedded coil heat exchanger through an inbound oil-water mixing main pipe, the in-tank circulation reheating and air-floating releaser is connected with an air suction aerator arranged on an in-tank sewage circulation reheating main water inlet pipe through an in-tank heating sewage recirculation inlet pipe, the in-tank sewage circulation reheating main water inlet pipe is provided with a, and a sewage reheating high-temperature recycling water supply pump arranged on a recycling sewage outlet pipe is connected between the air suction aerator and the sewage reheating low-temperature recycling water supply pump, the oil-water static separation tank body is connected with a sewage reheating recycling return water main pipe through an in-tank heating sewage recycling outlet pipe, and the sewage reheating recycling return water main pipe is connected with a sewage reheating recycling return water pump. The oil-water mixture delivered from the oil production well is preheated and heated to achieve the purpose of oil-water separation in the tank by physical and chemical means. If necessary, the heating process can preheat the incoming oil-water mixture to about 45 ℃ by using water vapor of 40-50 ℃ generated by a heat pump unit, and the temperature in the separation tank is maintained at the set temperature of about 45 ℃ by using the water vapor of 50-60 ℃ generated by the heat pump unit during the external circulation of the sewage tank at the bottom of the oil-water separation tank.

In foretell oil field oil recovery gathering and transportation station oil-water separation and waste water evaporation concentration heat pump system device, good oily purification oil tank system include that at least one links to each other and has jar interior coil heater's purification oil tank through jar upper portion oil overflow pipe and the jar interior oil level exit control ware of the oil-water static separation jar body, purification oil tank upper end be equipped with jar top and breathe back-fire relief valve, purification oil tank pass through good oil delivery pipe and link to each other with the oil refinery, purification oil tank's tank bottoms sewage heating recirculation pipe and jar interior sewage circulation reheat total inlet tube link to each other, purification oil tank's tank bottoms sewage play water heating recirculation pipe and sewage reheat circulation return water house steward link to each other. The method is characterized in that a 50-60 ℃ water vapor heat mixing mode generated by a heat pump unit is introduced to enable the dividing wall type heat exchange of the sewage in the coil pipe to enable the tank body to be kept at the temperature of 45 ℃.

In the oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station, the three-level sewage evaporation cooling purification heat pump device system comprises a first-level sewage evaporation cooling purification heat pump assembly, a second-level sewage evaporation cooling purification heat pump assembly and a third-level sewage evaporation cooling purification heat pump assembly which are sequentially arranged.

In foretell oil field oil recovery gathering and transportation station oil water separation and waste water evaporative concentration heat pump system device, one-level sewage evaporative cooling purify heat pump assembly include one-level evaporative cooling jar, one-level evaporative cooling jar link to each other through one-level evaporative cooling sewage inlet tube and sewage reheat circulation wet return pump, one-level evaporative cooling jar upper end link to each other through one-level steam compressor and one-level venturi condenser, one-level venturi condenser link to each other through recirculation sewage exit tube and sewage reheat high temperature recirculation water supply pump, one-level venturi condenser come sewage pipe and sewage reheat circulation wet return pump through recirculation and link to each other, one-level evaporative cooling jar lower extreme be connected with one-level evaporative cooling jar sewage water outlet pump, one-level evaporative cooling jar slag filter and one-level blow off pipe.

In foretell oil field oil recovery gathering and transportation station oil water separation and waste water evaporation concentration heat pump system device, second grade sewage evaporation cooling purification heat pump subassembly include the second grade evaporation cooling jar that links to each other through second grade evaporation cooling sewage inlet tube and first grade evaporation cooling jar sewage play water pump, second grade evaporation cooling jar pass through second grade vapor compressor and second grade venturi condenser and link to each other, second grade venturi condenser come the oil export through the oil production well and link to each other toward oil water separating tank outlet pipe and inbound oil water mixing house steward, just second grade venturi condenser come the oil inlet pipe through the oil production well and link to each other with buryying formula coil pipe heat exchanger, just second grade evaporation cooling jar lower extreme be connected with second grade sewage play water pump, second grade evaporation jar filter of slagging tap and second grade blow off pipe.

In the oil-water separation and wastewater evaporative concentration heat pump system device of the oil field oil extraction gathering and transportation station, the tertiary evaporation cooling purification heat pump assembly comprises a tertiary evaporation cooling tank connected with a secondary sewage outlet pump through a tertiary sewage inlet pipe, a vacuum pump is arranged at the upper end of the tertiary evaporation cooling tank, the tertiary evaporation cooling tank is connected with a tertiary dividing wall type condenser through a tertiary steam compressor, an exhaust valve is arranged on the tertiary dividing wall type condenser, the tertiary dividing wall type condenser is connected with an external water storage tank through water, the tertiary sewage inlet pipe is connected with a backwater external water storage tank through an external water storage tank circulating water pump, the backwater external water storage tank is connected with the tertiary dividing wall type condenser through an external water storage tank circulating water pump, and the secondary evaporation cooling sewage inlet pipe is connected between the backwater external water storage tank and the tertiary sewage inlet pipe, the three-stage dividing wall type condenser is connected with the condensed water storage tank through a clear water outlet pipe, the lower end of the three-stage evaporative cooling tank is respectively provided with a three-stage concentrated slag extractor and a three-stage slag discharge pipe, and the three-stage evaporative cooling tank is connected with a sewage outlet header pipe connected with a sewage treatment system through a three-stage sewage drainage pump.

In foretell oil field oil recovery gathering station water oil separating and waste water evaporation concentration heat pump system device, the tertiary evaporation concentration mummification heat pump system of anti-washing waste water including anti-washing waste water collection tank, anti-washing waste water collection tank link to each other with sewage treatment system through the waste water house steward that comes that anti-washing produced, anti-washing waste water collection tank link to each other through recirculation sewage pipe and sewage reheat low temperature recirculation working shaft and sewage reheat circulation return water pump, just anti-washing waste water collection tank connect gradually primary evaporation concentration futilely heat pump subassembly, secondary evaporation concentration futilely heat pump subassembly and tertiary evaporation concentration futilely heat pump subassembly through setting up at the waste water pump that anti-washing waste water collection tank goes out water respectively.

In the oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station, the electric auxiliary steam generator system comprises an electric auxiliary steam boiler, one side of the electric auxiliary steam boiler is provided with a steam boiler steam supply outlet pipe, the other side of the electric auxiliary steam boiler is connected with a steam-water heat exchange heater connected with a sewage reheating high-temperature recycling water supply pump, the electric auxiliary steam boiler is connected with a water treatment device through a boiler water supply pump, and the water treatment device is connected with the steam-water heat exchange heater. The method is used for heating the oil-water conveying pipeline/the oil-water separation tank/the oil purification tank at the initial starting stage, standby heating heat source and water vapor purging/back mixing heating during maintenance and repair of equipment.

Compared with the prior art, work as the utility model discloses a system device during operation has following advantage: the condensate water generated by the three-level evaporative cooling condensation is used for backwashing regeneration of the sewage treatment system device, the regeneration effect is strengthened, the service life of the device is prolonged, the purification efficiency is improved, the water reinjection capacity of the reinjection well can be enhanced, renewable energy is used as thermal energy as much as possible, the temperature of the reinjection water is reduced, the wastewater discharge pollution is eliminated, and the possibility of smoke dust pollution caused by using a combustion furnace is avoided. Has wide application prospect in the petroleum extraction industry.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

FIG. 2 is an enlarged view at A in FIG. 1;

FIG. 3 is an enlarged view at B in FIG. 1;

FIG. 4 is an enlarged view at C of FIG. 1;

FIG. 5 is an enlarged view at D of FIG. 1;

in the figure, a heat exchange device 1 of a solar saline solution heat collection and storage pool at a wellhead of an oil production well, a ground constructed pool body 1-1 with a heat insulation structure, a light-transmitting heat insulation board 1-2, an embedded coil heat exchanger 1-3, a supersaturated saline solution 1-4, an oil outlet pipe 1-5, an oil production well 1-6, a heating and pipeline connecting system 2 of an inbound pretreatment oil-water separation tank of a gathering and transportation station, an inbound oil-water mixing main pipe 2-1, an oil-water static separation tank body 2-2, an in-tank circulating reheating and air-floating releaser 2-3, a tank breathing fire-retardant valve 2-4, an in-tank heating sewage recycling inlet pipe 2-5-1, an in-tank heating sewage recycling outlet pipe 2-5-2, an in-tank oil level outlet controller 2-6, an in-tank sewage, 2-8 parts of an air suction aerator, 2-9 parts of a sewage reheating high-temperature recycling water supply pump, 2-10 parts of a sewage reheating low-temperature recycling water supply pump, 2-11 parts of a sewage reheating recycling water return pump, 2-12 parts of a sewage reheating recycling water return header pipe, 3 parts of a good oil purification oil tank system, 3-1 parts of an oil overflow pipe on the tank top, 3-2 parts of a purification oil tank, 3-3 parts of a tank top respiration fire valve, 3-4-1 parts of a tank bottom sewage inflow heating recycling pipe, 3-4-2 parts of a tank bottom sewage outflow heating recycling pipe, 3-5 parts of a tank coil heater, 3-6 parts of a good oil outlet pipe, 4 parts of a three-level sewage evaporative cooling purification heat pump device system, 4-1 parts of a first-level evaporative cooling sewage inlet pipe, 4-2 parts of a first-, 4-4 parts of a primary Venturi condenser, 4-5 parts of a primary evaporative cooling tank sewage water outlet pump, 4-6 parts of a primary evaporative cooling tank slag filter, 4-7 parts of a primary blow-off pipe, 4-8 parts of a recycled incoming sewage pipe, 4-9 parts of a recycled sewage outlet pipe, 4-10 parts of a secondary evaporative cooling sewage inlet pipe, 4-11 parts of a secondary evaporative cooling tank, 4-12 parts of a secondary vapor compressor, 4-13 parts of a secondary Venturi condenser, 4-14 parts of a secondary sewage water outlet pump, 4-15 parts of a secondary evaporative tank slag filter, 4-16 parts of a secondary blow-off pipe, 4-17 parts of an oil production well incoming oil inlet pipe, 4-18 parts of an oil production well incoming oil outlet to an oil-water separation tank, 4-19 parts of a tertiary sewage inlet pipe, 4-20 parts of a tertiary evaporative cooling tank, 4-22 parts of a three-level dividing wall type condenser, 4-23 parts of a three-level sewage draining pump, 4-24 parts of a three-level concentration slag extractor, 4-25 parts of a three-level slag discharging pipe, 4-26 parts of water from an external water storage tank, 4-27 parts of a backwater water-out external water storage tank, 4-28 parts of an exhaust valve, 4-29 parts of a circulating water pump of the external water storage tank, 4-30 parts of a vacuum pump, 4-31 parts of a sewage water outlet main pipe, 4-32 parts of a clear water outlet pipe, 5 parts of an electric auxiliary steam generator system, 5-1 parts of an electric auxiliary steam boiler, 5-2 parts of a boiler water feeding pump, 5-3 parts of a water treatment device, 5-4 parts of a steam-water heat exchange heater, 5-5 parts of a steam boiler steam supply outlet pipe, 6-1 parts of a back-, 6-3 parts of a recirculating sewage pipe, 6-4 parts of outlet water of a backwashing wastewater collection tank, 6-5 parts of a wastewater pump, 6-6 parts of a wastewater header pipe, 6-7 parts of a primary evaporation concentration tank, 6-8 parts of a primary vapor compressor, 6-9 parts of a primary jacketed condenser, 6-10 parts of a primary evaporation concentration tank wastewater outlet pump, 6-11 parts of a primary evaporation concentration tank slag filter, 6-12 parts of a primary blow-off pipe, 6-13 parts of a primary concentrated wastewater outlet pipe, 6-14 parts of a secondary evaporation concentration tank, 6-15 parts of a secondary vapor compressor, 6-16 parts of a secondary evaporation concentration wastewater outlet pump, 6-17 parts of a secondary evaporation concentration tank slag filter, 6-18 parts of a secondary blow-off pipe, 6-19 parts of a secondary concentrated wastewater outlet pipe, 6-20 parts of a tertiary evaporation concentration tank and 6-21 parts of, 6-23 parts of three-stage jacket condensed water discharge pump, 6-24 parts of three-stage evaporation concentration slag extractor, 6-25 parts of three-stage slag discharge pipe, 6-26 parts of condensed water storage tank, 6-27 parts of condensed water storage tank clear water outlet pump, sewage treatment system 7 and recharge water well 8.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in figure 1, the oil-water separation and waste water evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station comprises a heat exchange device 1 of a solar saline solution heat collection and storage pool of an oil production well mouth, the heat exchange device 1 of the solar saline solution heat collection and storage pool of the oil production well mouth is connected with a three-level sewage evaporation cooling purification heat pump device system 4, the three-level sewage evaporation cooling purification heat pump device system 4 is sequentially connected with a gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system 2 and a good oil purification oil tank system 3, the good oil purification oil tank system 3 is connected with an oil refinery, an electric auxiliary steam generator system 5 is arranged between the three-level sewage evaporation cooling purification heat pump device system 4 and the gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system 2, the gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system 2 and the good oil purification oil tank system 3 are connected with, and the reverse cleaning wastewater three-stage evaporation concentration drying heat pump device system 6 is connected with a recharge water well 8 through a sewage treatment system 7. This oil field oil recovery gathering and transportation station oil water separation and waste water evaporation concentration heat pump system device comprises 6 parts: the 1 st part is the solar energy salt solution thermal-arrest heat accumulation pond heat transfer device of oil recovery well head, and the 2 nd part is the inbound preliminary treatment oil water separating tank heating of gathering and transportation station and pipeline connection system, and the 3 rd part is good oil purification oil tank system, and the 4 th part is tertiary sewage evaporation cooling purification heat pump device system, and the 5 th part is electric auxiliary steam generator system, and the 6 th part is the tertiary evaporation concentration mummification heat pump device system of backwashing waste water. When the system enters a normal working state, the direct effect is to utilize renewable energy as much as possible as thermal energy, eliminate the pollution of waste water discharge and reduce the temperature of reinjection sewage. The possibility of flue gas pollution is avoided because a combustion heating furnace is not used.

As shown in fig. 2, the heat exchange device 1 of the solar saline solution heat collection and storage tank at the wellhead of the oil production well in the embodiment comprises oil outlet pipes 1-5 arranged in oil production wells 1-6, the oil outlet pipes 1-5 are respectively connected with one end of an embedded coil heat exchanger 1-3 in at least one ground constructed tank body 1-1 with a heat insulation structure, a light-transmitting heat insulation plate 1-2 is arranged at the upper end of the ground constructed tank body 1-1 with the heat insulation structure, supersaturated saline solution 1-4 is stored in the ground constructed tank body 1-1 with the heat insulation structure, and the embedded coil heat exchanger 1-3 is immersed in the supersaturated saline solution 1-4. When the pond body 1-1 constructed on the ground is 10 meters multiplied by 20 meters multiplied by 2 meters deep, and 1-4 meters of supersaturated concentrated salt solution is filled in the pond body 1-1, the photo-thermal light-transmitting plate 1-2 with the area of 10 meters multiplied by 20 meters is provided, the heat can be collected for 8 hours multiplied by 3.5kW multiplied by 200 square meters every day, the heat is 5600kW, and the heat can be stored for about 18000kW when the temperature in the pond is above 60 ℃. If the oil recovery well 1-6 is used, after the oil-water mixture flow rate per hour is 30m3/h and the temperature of the oil-water mixture is 40 ℃ at the well mouth and flows through the heat exchange coil 1-3 of the heat collection pool 1-1, the temperature can be raised to 50 ℃ and can last for about 60 hours, and accordingly, the requirement of a gathering and transportation station on the heating energy for oil-water separation of the well can be reduced.

Wherein, as shown in figure 3, the gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system 2 comprises at least one oil-water static separation tank body 2-2 which is connected in sequence, two adjacent oil-water static separation tank bodies 2-2 are connected through an in-tank oil level outlet controller 2-6, a tank body respiration fire-retardant valve 2-4 is arranged at the upper end of the oil-water static separation tank body 2-2, an in-tank circulation reheating and air-floating releaser 2-3 is arranged at the lower end, the oil-water static separation tank body 2-2 is connected with one end of an embedded coil heat exchanger 1-3 through an inbound oil-water mixing main pipe 2-1, the in-tank circulation reheating and air-floating releaser 2-3 is connected with an air suction aerator 2-8 arranged on an in-tank sewage circulation reheating main water inlet pipe 2-7 through an in-tank heating sewage recirculation inlet pipe 2, the sewage reheating circulating water supply system is characterized in that a sewage reheating low-temperature recycling water supply pump 2-10 connected with an air suction aerator 2-8 is arranged on a sewage circulating reheating main water inlet pipe 2-7 in the tank, a sewage reheating high-temperature recycling water supply pump 2-9 arranged on a recycling sewage outlet pipe 4-9 is connected between the air suction aerator 2-8 and the sewage reheating low-temperature recycling water supply pump 2-10, an oil-water static separation tank body 2-2 is connected with a sewage reheating circulating water return main pipe 2-12 through a tank heating sewage recirculating outlet pipe 2-5-2, and the sewage reheating circulating water return main pipe 2-12 is connected with a sewage reheating circulating water return pump 2-11.

When all the devices in the department operate, on one hand, the initial temperature of oil and water is led into a gathering and transportation station to be supplied by preheating through a wellhead sunlight and heat storage pool 1-1, the current temperature in an oil and water stable separation tank 2-2 and the exchange regulation of a sewage circulating water pump 2-9/2-10/2-11 system outside the tank and a 4 th part enable the temperature in the separation tank to be maintained at about 45 ℃, and under the combined action of an aerator 2-8/a releaser 2-3, oil drops in sewage are separated in an accelerated way, and the separated good oil is transferred to a lower stage step by step. When the total heat of the incoming oil is greater than the heat loss after the incoming station, the excess heat will be directed to the 6 th part; when the total heat of the oil coming from the inlet is smaller than the heat demand after the inlet, the total heat is provided by the three-stage evaporation cooling heat pump system of the 4 th part, and the total heat is provided by the electric auxiliary water vapor generator of the 5 th part when the water vapor purging operation is needed in the initial starting stage of the whole system and the overhaul of the oil-water tank/pipeline valve system.

As shown in figure 3, the good oil purification oil tank system 3 comprises at least one purification oil tank 3-2 which is connected with an oil level outlet controller 2-6 in the oil-water static separation tank body 2-2 through an oil overflow pipe 3-1 on the upper part of the tank and is provided with a coil heater 3-5 in the tank, the upper end of the purification oil tank 3-2 is provided with a tank top breathing fire-retardant valve 3-3, the purification oil tank 3-2 is connected with an oil refinery through a good oil outlet pipe 3-6, a tank bottom sewage inlet heating and recycling pipe 3-4-1 of the purification oil tank 3-2 is connected with a main sewage circulation and reheating inlet pipe 2-7 in the tank, and a tank bottom sewage outlet heating and recycling pipe 3-4-2 of the purification oil tank 3-2 is connected with a main sewage reheating and recycling pipe 2-12. When the whole device at the bottom is operated, most of the good oil in the good oil tank 3-2 is good oil, the temperature of the sewage at the lower part of the tank is controlled at 45 ℃ through the sewage inlet and outlet water heating recirculation pipe 3-4 at the bottom of the tank and the coil heater 3-5 in the tank, further, the oil and the water are subjected to deep gravity separation, and the good oil is sent to a combined station/oil refinery through the oil outlet pipe 3-6.

Further, as shown in fig. 4, the three-stage sewage evaporative cooling purification heat pump device system 4 in the present embodiment includes a first-stage sewage evaporative cooling purification heat pump assembly, a second-stage sewage evaporative cooling purification heat pump assembly, and a third-stage sewage evaporative cooling purification heat pump assembly, which are sequentially arranged.

Wherein, the first-stage sewage evaporative cooling purification heat pump component comprises a first-stage evaporative cooling tank 4-2, the first-stage evaporative cooling tank 4-2 is connected with a sewage reheating circulation water return pump 2-11 through a first-stage evaporative cooling sewage inlet pipe 4-1, the upper end of the first-stage evaporative cooling tank 4-2 is connected with a first-stage Venturi condenser 4-4 through a first-stage steam compressor 4-3, the first-stage Venturi condenser 4-4 is connected with a sewage reheating high-temperature recirculation water supply pump 2-9 through a recirculation sewage outlet pipe 4-9, the first-stage Venturi condenser 4-4 is connected with a sewage reheating circulation water return pump 2-11 through a recirculation sewage pipe 4-8, the lower end of the primary evaporative cooling tank 4-2 is connected with a primary evaporative cooling tank sewage water outlet pump 4-5, a primary evaporative cooling tank slag filter 4-6 and a primary sewage discharge pipe 4-7.

Wherein, the second-stage sewage evaporation cooling purification heat pump component comprises a second-stage evaporation cooling tank 4-11 connected with a first-stage evaporation cooling tank sewage water outlet pump 4-5 through a second-stage evaporation cooling sewage inlet pipe 4-10, the second-stage evaporation cooling tank 4-11 is connected with a second-stage venturi condenser 4-13 through a second-stage vapor compressor 4-12, the second-stage venturi condenser 4-13 is connected with an inbound oil-water mixing header pipe 2-1 from an oil outlet of an oil production well to an oil-water separation tank outlet pipe 4-18, and the two-stage Venturi condenser 4-13 is connected with the embedded coil heat exchanger 1-3 through an oil production well incoming oil inlet pipe 4-17, and the lower end of the secondary evaporation cooling tank 4-11 is connected with a secondary sewage outlet pump 4-14, a secondary evaporation tank slag filter 4-15 and a secondary sewage discharge pipe 4-16.

Wherein, the three-level sewage evaporation cooling purification heat pump assembly comprises a three-level evaporation cooling tank 4-20 connected with a two-level sewage outlet pump 4-14 through a three-level sewage inlet pipe 4-19, the upper end of the three-level evaporation cooling tank 4-20 is provided with a vacuum pump 4-30, the three-level evaporation cooling tank 4-20 is connected with a three-level dividing wall type condenser 4-22 through a three-level vapor compressor 4-21, the three-level dividing wall type condenser 4-22 is provided with an exhaust valve 4-28, the three-level dividing wall type condenser 4-22 is connected with an external water storage tank inlet water 4-26, the three-level sewage inlet pipe 4-19 is connected with a backwater removing external water storage tank 4-27, and the backwater removing external water storage tank 4-27 is connected with the three-level dividing wall type condenser 4-22 through, and the second-stage evaporation cooling sewage inlet pipe 4-10 is connected between the backwater outside water storage tank 4-27 and the third-stage sewage inlet pipe 4-19, the third-stage dividing wall type condenser 4-22 is connected with the condensed water storage tank 6-26 through the clear water outlet pipe 4-32, the lower end of the third-stage evaporation cooling tank 4-20 is respectively provided with a third-stage concentration slag extractor 4-24 and a third-stage slag discharge pipe 4-25, and the third-stage evaporation cooling tank 4-20 is connected with the sewage outlet header pipe 4-31 connected with the sewage treatment system 7 through a third-stage sewage discharge pump 4-23.

When all devices of the home department are in operation:

the first function is that the sewage is subjected to three-stage evaporation concentration and temperature reduction to 10-15 ℃.

And the second function is that the condensation heat generated in the condenser of the electric steam compressor, the high-temperature end is used for circularly heating the sewage of the separation and purification tank, the medium-temperature end is used for preheating and heating the oil from the oil production well, and the low-temperature end is used for heating the external water storage tank.

Preferably, as shown in fig. 3, the electric auxiliary steam generator system 5 herein includes an electric auxiliary steam boiler 5-1, the electric auxiliary steam boiler 5-1 has a steam boiler steam supply outlet pipe 5-5 at one side, and a steam-water heat exchange heater 5-4 connected to a sewage reheating high-temperature recycling water supply pump 2-9 at the other side, and the electric auxiliary steam boiler 5-1 is connected to a water treatment device 5-3 through a boiler water supply pump 5-2, and the water treatment device 5-3 is connected to the steam-water heat exchange heater 5-4. When all the devices in the local part are put into operation, the electric heating elements generate heat to generate 0.2-0.4 MPa saturated steam which is used as a standby heat source for auxiliary heating of oil production wells, and high-temperature purging is used during overhauling of pipelines and tanks in the station.

Further, as shown in fig. 5, the reverse cleaning wastewater three-stage evaporation concentration drying heat pump device system 6 includes a reverse cleaning wastewater collection tank 6-2, the reverse cleaning wastewater collection tank 6-2 is connected to a wastewater treatment system 7 through a wastewater main pipe 6-1 generated by reverse cleaning, the reverse cleaning wastewater collection tank 6-2 is connected to a wastewater reheating low-temperature recirculation water supply pump 2-10 and a wastewater reheating circulation water return pump 2-11 through a recirculation wastewater pipe 6-3, and the reverse cleaning wastewater collection tank 6-2 is connected to a first-stage evaporation concentration drying heat pump assembly, a second-stage evaporation concentration drying heat pump assembly and a third-stage evaporation concentration drying heat pump assembly in sequence through a wastewater pump 6-5 disposed on the outlet water 6-4 of the reverse cleaning wastewater collection tank, respectively.

Wherein, the one-level evaporation concentration drying heat pump assembly comprises a waste water main pipe 6-6 connected with a waste water pump 6-5, the waste water main pipe 6-6 is connected with a one-level evaporation concentration tank 6-7, the one-level evaporation concentration tank 6-7 is provided with a one-level jacket condenser 6-9, the upper end of the one-level evaporation concentration tank 6-7 is connected with one side of the one-level jacket condenser 6-9 through a one-level vapor compressor 6-8, the lower end of the one-level evaporation concentration tank 6-7 is respectively provided with a one-level evaporation concentration tank slag filter 6-11 and a one-level sewage discharge pipe 6-12, and the other side of the one-level jacket condenser 6-9 is connected with a one-level concentrated waste water outlet pipe 6-13 through a one-level evaporation concentration tank sewage outlet.

The second-stage evaporation concentration drying heat pump component comprises a second-stage evaporation concentration tank 6-14 which is connected with a first-stage concentrated wastewater outlet pipe 6-13 and is provided with a second-stage jacket condenser, one side of the second-stage jacket condenser is connected with one side of a first-stage jacket condenser 6-9, the other side of the second-stage jacket condenser is connected with a second-stage concentrated wastewater outlet pipe 6-19 through a second-stage evaporation concentration wastewater outlet pump 6-16, the upper end of the second-stage evaporation concentration tank 6-14 is connected with the second-stage jacket condenser through a second-stage vapor compressor 6-15, and the lower end of the second-stage evaporation concentration tank 6-14 is respectively provided with a second-stage evaporation concentration tank slag filter 6-17 and a second-stage.

Wherein, the three-stage evaporation concentration drying heat pump component comprises a three-stage evaporation concentration tank 6-20 which is connected with a two-stage concentrated wastewater outlet pipe 6-19 and is provided with a three-stage jacket condenser, one side of the three-stage jacket condenser is connected with a second-stage vapor compressor 6-15, the upper end of the three-stage evaporation concentration tank 6-20 is connected with the second-stage vapor compressor 6-15 through a third-stage vapor compressor 6-21, the three-stage evaporation concentration tank 6-20 is connected with a vacuum pump 6-22, the other side of the three-stage jacket condenser is connected with a condensed water storage tank 6-26 through a third-stage jacket condensed water discharge pump 6-23, the condensed water storage tank 6-26 is connected with the sewage treatment system through a condensed water storage tank clear water outlet pump 6-27, and the lower end of the third-level evaporation concentration tank 6-20 is respectively provided with a third-level evaporation concentration slag extractor 6-24 and a third-level slag discharge pipe 6-25.

When all devices of the home department are in operation:

the backwashing wastewater is subjected to three-stage evaporation and concentration until all condensate is crystallized to be in a solid material state and is separated and collected, so that secondary pollution is avoided.

And the high-temperature end is used for heating a heat source by sewage circulation, the medium-temperature end is used for preheating and heating oil from an oil production well, and the low-temperature end is used for heating and storing an external water storage tank.

And thirdly, returning part of the energy from the heat of the sewage stored at the bottom of the separation and purification tank to be used for heating the evaporation and concentration tank so as to accelerate the evaporation and concentration process and reduce the energy consumption of the motor.

And fourthly, because the evaporation concentration solid solution of the wastewater is completely separated, the subsequent condensed water can be directly used for backwashing and regeneration of the sewage treatment system device.

The utility model discloses an actual effect after system's device operation:

1. for a gathering and transportation station with the daily treatment capacity of 1200t and the water content of 70%, the good oil output to a combined station/oil refinery is about 360 t/day, the temperature of sewage of about 840 tons/day is reduced to 15 ℃ after a three-stage evaporation cooling heat pump device is adopted, and the compression condensation heat in the process is recycled to a separation tank/a purification tank.

And 2, 130 tons of condensed water generated by three-stage evaporation cooling condensation is used for backwashing regeneration of the sewage treatment system device per day, so that the regeneration effect is enhanced, the service life of equipment is prolonged, the purification efficiency is improved, and the reinjection water capacity of the reinjection well can be enhanced.

3, condensing and evaporating 126 tons of reverse cleaning wastewater of about 15 percent in 840 tons of wastewater per day, and drying and collecting 6.3 tons of solids of about 5 percent in the reverse cleaning wastewater per day.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the heat exchange device 1 of the solar saline solution heat collection and storage pool at the wellhead of the oil production well, a ground constructed pool body 1-1 with a heat insulation structure, a light-transmitting heat insulation board 1-2, an embedded coil heat exchanger 1-3, a supersaturated saline solution 1-4, an oil outlet pipe 1-5, an oil production well 1-6, a heating and pipeline connecting system 2 of an inbound pretreatment oil-water separation tank of a gathering and transportation station, an inbound oil-water mixing main pipe 2-1, an oil-water static separation tank body 2-2, an in-tank circulating reheating and air-floating releaser 2-3, a tank breathing fire-retardant valve 2-4, an in-tank heating sewage recycling inlet pipe 2-5-1, an in-tank heating sewage recycling outlet pipe 2-5-2, an in-tank oil level outlet controller 2-6, an in-tank sewage recycling reheating main water inlet pipe, 2-8 parts of an air suction aerator, 2-9 parts of a sewage reheating high-temperature recycling water supply pump, 2-10 parts of a sewage reheating low-temperature recycling water supply pump, 2-11 parts of a sewage reheating recycling water return pump, 2-12 parts of a sewage reheating recycling water return header pipe, 3 parts of a good oil purification oil tank system, 3-1 parts of an oil overflow pipe on the tank top, 3-2 parts of a purification oil tank, 3-3 parts of a tank top respiration fire valve, 3-4-1 parts of a tank bottom sewage inflow heating recycling pipe, 3-4-2 parts of a tank bottom sewage outflow heating recycling pipe, 3-5 parts of a tank coil heater, 3-6 parts of a good oil outlet pipe, 4 parts of a three-level sewage evaporative cooling purification heat pump device system, 4-1 parts of a first-level evaporative cooling sewage inlet pipe, 4-2 parts of a first-, 4-4 parts of a primary Venturi condenser, 4-5 parts of a primary evaporative cooling tank sewage water outlet pump, 4-6 parts of a primary evaporative cooling tank slag filter, 4-7 parts of a primary blow-off pipe, 4-8 parts of a recycled incoming sewage pipe, 4-9 parts of a recycled sewage outlet pipe, 4-10 parts of a secondary evaporative cooling sewage inlet pipe, 4-11 parts of a secondary evaporative cooling tank, 4-12 parts of a secondary vapor compressor, 4-13 parts of a secondary Venturi condenser, 4-14 parts of a secondary sewage water outlet pump, 4-15 parts of a secondary evaporative tank slag filter, 4-16 parts of a secondary blow-off pipe, 4-17 parts of an oil production well incoming oil inlet pipe, 4-18 parts of an oil production well incoming oil outlet to an oil-water separation tank, 4-19 parts of a tertiary sewage inlet pipe, 4-20 parts of a tertiary evaporative cooling tank, 4-22 parts of a three-level dividing wall type condenser, 4-23 parts of a three-level sewage draining pump, 4-24 parts of a three-level concentration slag extractor, 4-25 parts of a three-level slag discharging pipe, 4-26 parts of water from an external water storage tank, 4-27 parts of a backwater water-out external water storage tank, 4-28 parts of an exhaust valve, 4-29 parts of a circulating water pump of the external water storage tank, 4-30 parts of a vacuum pump, 4-31 parts of a sewage water outlet main pipe, 4-32 parts of a clear water outlet pipe, 5 parts of an electric auxiliary steam generator system, 5-1 parts of an electric auxiliary steam boiler, 5-2 parts of a boiler water feeding pump, 5-3 parts of a water treatment device, 5-4 parts of a steam-water heat exchange heater, 5-5 parts of a steam boiler steam supply outlet pipe, 6-1 parts of a back-, 6-3 parts of a recirculating sewage pipe, 6-4 parts of outlet water of a backwashing wastewater collection tank, 6-5 parts of a wastewater pump, 6-6 parts of a wastewater header pipe, 6-7 parts of a primary evaporation concentration tank, 6-8 parts of a primary vapor compressor, 6-9 parts of a primary jacketed condenser, 6-10 parts of a primary evaporation concentration tank wastewater outlet pump, 6-11 parts of a primary evaporation concentration tank slag filter, 6-12 parts of a primary blow-off pipe, 6-13 parts of a primary concentrated wastewater outlet pipe, 6-14 parts of a secondary evaporation concentration tank, 6-15 parts of a secondary vapor compressor, 6-16 parts of a secondary evaporation concentration wastewater outlet pump, 6-17 parts of a secondary evaporation concentration tank slag filter, 6-18 parts of a secondary blow-off pipe, 6-19 parts of a secondary concentrated wastewater outlet pipe, 6-20 parts of a tertiary evaporation concentration tank and 6-21 parts of, three-stage jacket condensed water discharge pumps 6-23, three-stage evaporation concentration slag discharging devices 6-24, three-stage slag discharging pipes 6-25, condensed water storage tanks 6-26, condensed water storage tank clear water discharge pumps 6-27, a sewage treatment system 7, a recharge water well 8 and the like, but the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims (10)

1. A heat pump system device for oil-water separation and wastewater evaporation concentration of an oil field oil extraction gathering and transportation station is characterized by comprising a heat exchange device (1) of a solar saline solution heat collection and storage pool of an oil production well mouth, wherein the heat exchange device (1) of the solar saline solution heat collection and storage pool of the oil production well mouth is connected with a three-level sewage evaporation cooling purification heat pump device system (4), the three-level sewage evaporation cooling purification heat pump device system (4) is sequentially connected with a gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system (2) and a good oil purification oil tank system (3), the good oil purification oil tank system (3) is connected with an oil refinery, an electric auxiliary steam generator system (5) is arranged between the three-level sewage evaporation cooling purification heat pump device system (4) and the gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system (2), the inbound preliminary treatment oil water knockout drum heating of gathering station and pipe connection system (2) and good oily purification oil tank system (3) be connected with three-level evaporation concentration mummification heat pump device system of backwashing waste water (6), just three-level evaporation concentration mummification heat pump device system of backwashing waste water (6) link to each other with irrigation water well (8) through sewage treatment system (7).

2. The oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil recovery gathering and transportation station according to claim 1, it is characterized in that the heat exchange device (1) of the solar saline solution heat collection and storage pool at the wellhead of the oil production well comprises an oil outlet pipe (1-5) arranged in the oil production well (1-6), the oil outlet pipe (1-5) is respectively connected with one end of an embedded coil heat exchanger (1-3) in the ground construction tank body (1-1) with a heat insulation structure, the upper end of the ground constructed tank body (1-1) with the heat insulation structure is provided with a light-transmitting heat insulation plate (1-2), the ground constructed tank body (1-1) with the heat insulation structure is internally provided with supersaturated salt solution (1-4), and the embedded coil heat exchanger (1-3) is immersed in the supersaturated salt solution (1-4).

3. The oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station according to claim 2, characterized in that the gathering and transportation station inbound pretreatment oil-water separation tank heating and pipeline connecting system (2) comprises at least one oil-water static separation tank body (2-2) which is connected in sequence, two adjacent oil-water static separation tank bodies (2-2) are connected through an in-tank oil level outlet controller (2-6), a tank body respiration fire-retardant valve (2-4) is arranged at the upper end of the oil-water static separation tank body (2-2), an in-tank circulation reheating and air flotation releaser (2-3) is arranged at the lower end, the oil-water static separation tank body (2-2) is connected with one end of the embedded coil heat exchanger (1-3) through an inbound oil-water mixing main pipe (2-1), the device is characterized in that the in-tank circulation reheating and air-floating releaser (2-3) is connected with an air suction aerator (2-8) arranged on an in-tank sewage circulation reheating main water inlet pipe (2-7) through an in-tank heating sewage recirculation inlet pipe (2-5-1), a sewage reheating low-temperature recirculation water supply pump (2-10) connected with the air suction aerator (2-8) is arranged on the in-tank sewage circulation reheating main water inlet pipe (2-7), a sewage reheating high-temperature recirculation water supply pump (2-9) arranged on a recirculation sewage outlet pipe (4-9) is connected between the air suction aerator (2-8) and the sewage reheating low-temperature recirculation water supply pump (2-10), and the oil-water static separation tank body (2-2) is connected with a sewage reheating circulation return water main water return pipe (2-5-2) through an in-tank heating sewage recirculation outlet pipe (2-5-2) and a sewage reheating circulation return water return pipe The sewage reheating circulation water return main pipe (2-12) is connected with a sewage reheating circulation water return pump (2-11).

4. The oil-water separation and waste water evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station according to claim 3, characterized in that the good oil purification oil tank system (3) comprises at least one purification oil tank (3-2) which is connected with the tank oil level outlet controller (2-6) of the oil-water static separation tank body (2-2) through an oil overflow pipe (3-1) on the tank top and is provided with a tank coil heater (3-5), the upper end of the purification oil tank (3-2) is provided with a tank top respiration fire retardant valve (3-3), the purification oil tank (3-2) is connected with an oil refinery through a good oil delivery pipe (3-6), a tank bottom sewage inflow heating recirculation pipe (3-4-1) of the purification oil tank (3-2) is connected with a tank inner sewage circulation reheating main water inlet pipe (2-7), and a sewage outlet water heating and recycling pipe (3-4-2) at the bottom of the purified oil tank (3-2) is connected with a sewage reheating and recycling return water main pipe (2-12).

5. The oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil extraction gathering station according to claim 3 or 4, characterized in that the three-stage wastewater evaporation cooling purification heat pump device system (4) comprises a first-stage wastewater evaporation cooling purification heat pump assembly, a second-stage wastewater evaporation cooling purification heat pump assembly and a third-stage wastewater evaporation cooling purification heat pump assembly which are sequentially arranged.

6. The oil-water separation and wastewater evaporative concentration heat pump system device of the oil field oil extraction gathering and transportation station of claim 5, wherein the first-stage wastewater evaporative cooling purification heat pump assembly comprises a first-stage evaporative cooling tank (4-2), the first-stage evaporative cooling tank (4-2) is connected with the wastewater reheat cycle water return pump (2-11) through a first-stage evaporative cooling wastewater inlet pipe (4-1), the upper end of the first-stage evaporative cooling tank (4-2) is connected with a first-stage venturi condenser (4-4) through a first-stage steam compressor (4-3), the first-stage venturi condenser (4-4) is connected with the wastewater reheat high-temperature recycle water supply pump (2-9) through a recycle wastewater outlet pipe (4-9), and the first-stage venturi condenser (4-4) is connected with the wastewater reheat cycle water supply pipe (4-8) and the wastewater reheat cycle water return pump through recycle (2-11), the lower end of the primary evaporative cooling tank (4-2) is connected with a primary evaporative cooling tank sewage outlet pump (4-5), a primary evaporative cooling tank slag filter (4-6) and a primary sewage discharge pipe (4-7).

7. The oil-water separation and wastewater evaporative concentration heat pump system device of the oilfield production gathering and transportation station as defined in claim 6, wherein the secondary wastewater evaporative cooling purification heat pump assembly comprises a secondary evaporative cooling tank (4-11) connected with a primary evaporative cooling tank wastewater outlet pump (4-5) through a secondary evaporative cooling wastewater inlet pipe (4-10), the secondary evaporative cooling tank (4-11) is connected with a secondary venturi condenser (4-13) through a secondary steam compressor (4-12), the secondary venturi condenser (4-13) is connected with the oil-water separation tank outlet pipe (4-18) and the oil-water inlet mixing header pipe (2-1) through the oil production well oil inlet pipe (4-17), and the secondary venturi condenser (4-13) is connected with the embedded coil heat exchanger (1-3) through the oil production well oil inlet pipe (4-17), and the lower end of the secondary evaporation cooling tank (4-11) is connected with a secondary sewage outlet pump (4-14), a secondary evaporation tank slag filter (4-15) and a secondary sewage discharge pipe (4-16).

8. The oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station according to claim 7, characterized in that the three-level wastewater evaporation cooling purification heat pump assembly comprises a three-level evaporation cooling tank (4-20) connected with a two-level wastewater water outlet pump (4-14) through a three-level wastewater inlet pipe (4-19), a vacuum pump (4-30) is arranged at the upper end of the three-level evaporation cooling tank (4-20), the three-level evaporation cooling tank (4-20) is connected with a three-level dividing wall type condenser (4-22) through a three-level steam compressor (4-21), an exhaust valve (4-28) is arranged on the three-level dividing wall type condenser (4-22), and the three-level dividing wall type condenser (4-22) is connected with an external water storage tank water (4-26), the three-level sewage inlet pipe (4-19) is connected with the backwater outside water storage tank (4-27), the backwater outside water storage tank (4-27) is connected with the three-level dividing wall type condenser (4-22) through the outside water storage tank circulating water pump (4-29), the two-level evaporative cooling sewage inlet pipe (4-10) is connected between the backwater outside water storage tank (4-27) and the three-level sewage inlet pipe (4-19), the three-level dividing wall type condenser (4-22) is connected with the condensed water storage tank (6-26) through the clear water outlet pipe (4-32), the lower end of the three-level evaporative cooling tank (4-20) is respectively provided with a three-level concentrated slag extractor (4-24) and a three-level slag discharge pipe (4-25), and the three-level evaporative cooling tank (4-20) is connected with the sewage water storage tank (6-26) through the three-level sewage discharge pump (4-23) The sewage outlet main pipes (4-31) connected with the treatment system (7) are connected.

9. The oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil recovery gathering and transportation station according to claim 8, it is characterized in that the reverse cleaning wastewater three-stage evaporation concentration drying heat pump device system (6) comprises a reverse cleaning wastewater water collecting tank (6-2), the backwashing wastewater collecting tank (6-2) is connected with a wastewater treatment system (7) through a wastewater main pipe (6-1) generated by backwashing, the backwashing wastewater collection tank (6-2) is connected with a wastewater reheating low-temperature recycling water supply pump (2-10) and a wastewater reheating recycling water return pump (2-11) through a recycling wastewater pipe (6-3), and the reverse cleaning wastewater water collecting tank (6-2) is respectively and sequentially connected with a three-stage evaporation concentration drying heat pump assembly through a wastewater pump (6-5) arranged on the outlet water (6-4) of the reverse cleaning wastewater water collecting tank.

10. The oil-water separation and wastewater evaporation concentration heat pump system device of the oil field oil extraction gathering and transportation station according to claim 3, characterized in that the electric auxiliary steam generator system (5) comprises an electric auxiliary steam boiler (5-1), one side of the electric auxiliary steam boiler (5-1) is provided with a steam boiler steam supply and outlet pipe (5-5), the other side is connected with a steam-water heat exchange heater (5-4) connected with a sewage reheating high-temperature recirculation water supply pump (2-9), the electric auxiliary steam boiler (5-1) is connected with a water treatment device (5-3) through a boiler water supply pump (5-2), and the water treatment device (5-3) is connected with the steam-water heat exchange heater (5-4).

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