CN110145295B - Heat pump heat recycling system device of oil-water separation purification tank of oil extraction gathering and transportation station - Google Patents
Heat pump heat recycling system device of oil-water separation purification tank of oil extraction gathering and transportation station Download PDFInfo
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- CN110145295B CN110145295B CN201910363245.3A CN201910363245A CN110145295B CN 110145295 B CN110145295 B CN 110145295B CN 201910363245 A CN201910363245 A CN 201910363245A CN 110145295 B CN110145295 B CN 110145295B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 238000000926 separation method Methods 0.000 title claims abstract description 105
- 238000000746 purification Methods 0.000 title claims abstract description 89
- 238000000605 extraction Methods 0.000 title claims abstract description 29
- 238000004064 recycling Methods 0.000 title claims abstract description 26
- 239000010865 sewage Substances 0.000 claims abstract description 71
- 239000003129 oil well Substances 0.000 claims abstract description 16
- 239000008236 heating water Substances 0.000 claims description 12
- 238000004880 explosion Methods 0.000 claims description 8
- 238000001125 extrusion Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000012774 insulation material Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 abstract description 13
- 239000002699 waste material Substances 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 2
- 239000003546 flue gas Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 39
- 235000019198 oils Nutrition 0.000 description 39
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 239000002351 wastewater Substances 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 239000003345 natural gas Substances 0.000 description 5
- 235000019476 oil-water mixture Nutrition 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 210000001124 body fluid Anatomy 0.000 description 3
- 239000010839 body fluid Substances 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000029058 respiratory gaseous exchange Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/34—Arrangements for separating materials produced by the well
- E21B43/40—Separation associated with re-injection of separated materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/06—Pipe-line systems for gases or vapours for steam
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B30/00—Heat pumps
- F25B30/02—Heat pumps of the compression type
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/52—Heat recovery pumps, i.e. heat pump based systems or units able to transfer the thermal energy from one area of the premises or part of the facilities to a different one, improving the overall efficiency
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Organic Chemistry (AREA)
- Water Supply & Treatment (AREA)
- Hydrology & Water Resources (AREA)
- Fluid Mechanics (AREA)
- Analytical Chemistry (AREA)
- Thermal Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The invention relates to a heat pump heat recycling system device of an oil-water separation purification tank of an oil extraction gathering and transportation station. The oil-water separation device solves the technical problems of large energy waste and the like in the prior oil-water separation. The sewage treatment system comprises an oil-water steam separation purification tank assembly, an oil well end, an oil refinery end, a circulating water outlet pipe, a high-temperature heat pump circulating assembly and a low-temperature steam heat pump circulating assembly, wherein the low-temperature steam heat pump circulating assembly is provided with two output ends, one output end of the low-temperature steam heat pump circulating assembly is communicated with the oil-water steam separation purification tank assembly, and the remaining output end of the low-temperature steam heat pump circulating assembly is connected with an external water storage tank connected with a sewage treatment station. The advantages are that: greatly reduces the pollution of heat energy waste and coal-fired flue gas emission to the atmosphere of the in-station heating because of adopting a coal-fired boiler, and has wide application prospect in oil field oil extraction collection and transportation factories.
Description
Technical Field
The invention belongs to the technical field of heat pump equipment, and particularly relates to a heat pump heat recycling system device of an oil-water separation purification tank of an oil extraction gathering and transportation station.
Background
The petroleum extraction and transportation system is usually that after the high water content petroleum is collected to the ground, according to the oil outlet temperature and the transportation distance and the local climate characteristics, the petroleum extraction and transportation system is only transported to an oil collection and transportation station/combination station in a heat preservation way or is transported to the oil collection and transportation station/combination station through heating, and the water content is more than 70% because the pumping unit is pumping out the oil-water mixture, the oil-water separation and purification are needed, and the oil-water separation and purification are generally carried out by heating to 45-55 ℃ in the station. The temperature of the wastewater after separating the oil-water mixture is higher and can reach 50-60 ℃. The oil is output by heat preservation, and after the wastewater enters a sewage purification treatment plant for deep purification, the pressure pump is used for injecting water into a reinjection well. The heating source in the process is generally provided by a coal-fired steam boiler in a dividing wall type heat exchange mode by saturated steam of 0.2-0.4 MPa to each heat exchanger. In the total heating quantity, a part of the total heating quantity is used for heating and preheating an oil-water mixture, a part of equipment pipelines are used for heat dissipation and losing, a part of the total heating quantity is taken away by purified output crude oil, a part of the total heating quantity is reinjected into the ground, a part of total heating quantity is discharged to a sewage treatment plant from sewage, heat in the sewage is scattered into the atmosphere in a white mode, and the heat discharged along with the waste water is wasted. Therefore, the improvement of the hot water utilization rate in the oil-water separation process in the petroleum extraction and transportation system is an urgent problem.
In order to solve the problems in the prior art, long-term exploration is performed, and various solutions are proposed, for example, the chinese patent literature discloses an oilfield waste heat natural gas high temperature heat pump process [ application number: 200810015763.8]: the technology utilizes the waste heat of oil well produced liquid or oil field sewage to obtain low-grade energy source required by a heat pump through a heat exchanger, the heat pump uses oil field natural gas as power, a heat pump system of a heat pump compressor is driven by a natural gas engine, and heat is reused after the temperature of the natural gas heat pump is raised.
Although the problem of low utilization rate of the oilfield waste heat is relieved to a certain extent, the scheme still exists: the sewage recycling rate during oil-water separation is low, and natural gas is required to be heated, so that the problem of environmental protection is solved.
Disclosure of Invention
The invention aims to solve the problems and provides a heat pump heat recycling system device of an oil extraction gathering and transportation station oil-water separation purification tank, which has high heat recycling rate.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the oil-water vapor separation purification tank heat pump heat recycling system device of the oil extraction gathering and transportation station comprises an oil-water vapor separation purification tank assembly, wherein one end of the oil-water vapor separation purification tank assembly is connected with an oil well end, and the other end of the oil-water vapor separation purification tank assembly is externally connected with an oil refinery end.
In the oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device, the oil-water steam separation purification tank assembly is provided with a total inlet connected with an oil well end and a total outlet connected with an oil refinery end, and the circulating water inlet pipe and the total inlet of the oil-water steam separation purification tank assembly are respectively connected in parallel with the oil well end.
The heat pump heat recycling system device of the oil extraction gathering and transportation station oil-water separation purification tank is characterized in that the oil-water steam separation purification tank assembly is provided with a sub-inlet and a sub-outlet, the sub-inlet of the oil-water steam separation purification tank assembly is connected with a circulating water inlet pipe, and the sub-outlet of the oil-water steam separation purification tank assembly is connected with a circulating water outlet pipe.
In the oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device, the high-temperature heat pump circulation assembly comprises a high-temperature steam generation sewage tank connected with a circulation water outlet pipe, the high-temperature steam generation sewage tank is connected with the input end of a steam-water mixer through a high-temperature electric steam compressor, the input end of the steam-water mixer is connected with the circulation water outlet pipe in parallel respectively, the output end of the steam-water mixer is connected with an air explosion device through a sewage circulation pump, and the air explosion device is connected with one end of the circulation water inlet pipe.
In the oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device, the low-temperature steam heat pump circulation assembly comprises a low-temperature steam generation sewage tank connected with a high-temperature steam generation sewage tank, the low-temperature steam generation sewage tank is connected with an extrusion end steam-water mixer through a low-temperature electric steam compressor, the extrusion end steam-water mixer is connected with an oil well end, the circulation water inlet pipe and the total inlet are respectively connected with the extrusion end steam-water mixer in parallel, and the low-temperature steam generation sewage tank is connected with an external water storage tank through the circulation assembly.
In the oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device, the circulating assembly comprises a circulating heating water pump connected with an inlet of the low-temperature steam generation sewage tank, the circulating heating water pump and the high-temperature steam generation sewage tank are respectively connected in parallel with the inlet of the low-temperature steam generation sewage tank, the low-temperature steam generation sewage tank is provided with two outlets, one outlet of the low-temperature steam generation sewage tank is connected with the low-temperature electric steam compressor, the remaining outlet of the low-temperature steam generation sewage tank is connected with the circulating heating water pump through the auxiliary water storage tank, and the external water storage tank is respectively connected with one outlet of the auxiliary water storage tank and the low-temperature steam generation sewage tank which is not connected with the low-temperature electric steam compressor.
In the oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device, the oil-water steam separation purification tank assembly comprises a plurality of oil-water separation tanks and a plurality of purification tanks, and the oil-water separation tanks and the purification tanks are sequentially connected in series and are respectively connected with each other through connecting pipes.
In the heat pump heat recycling system device of the oil extraction and transportation station oil-water separation purifying tank, the total inlet is arranged on one oil-water separation tank which is farthest from the purifying tank in the plurality of oil-water separation tanks of the oil-water steam separation purifying tank assembly, the total outlet is arranged on one purifying tank which is farthest from the oil-water separation tank in the plurality of purifying tanks of the oil-water steam separation purifying tank assembly, and the total outlet is connected with the refinery end through an oil outlet pipe.
In the oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device, the oil-water separation tank and the purification tank are respectively provided with the releaser, and the releasers are respectively connected through the circulating water inlet pipe.
In the oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device, the separation tank and the purification tank are cylindrical steel tanks with heat insulation materials, tank top exhaust breather valve flame arresters are respectively arranged at the upper ends of the separation tank and the purification tank, and tank body fluid devices connected with connecting pipes are respectively arranged inside the separation tank and the purification tank.
Compared with the prior art, when the equipment system device works, 45 ℃ sewage discharged by the oil-water separation/purification tank can be cooled to about 10 ℃ and the water temperature is higher than 5 ℃ when reaching the water injection wellhead, so that the device can be smoothly recharged without freezing, thereby greatly reducing the waste of heat energy of a coal-fired boiler and the pollution of coal-fired flue gas emission to the atmosphere due to the heating in a station, and having wide application prospect in oil field oil extraction collection and transportation factories.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
in the figure, a high-temperature heat pump circulation assembly 1, a high-temperature electric vapor compressor 11, a high-temperature vapor generation sewage tank 12, a steam-water mixer 13, a sewage circulation pump 14, a gas explosion device 15, a low-temperature vapor heat pump circulation assembly 2, a low-temperature electric vapor compressor 21, a low-temperature vapor generation sewage tank 22, an extrusion end steam-water mixer 23, an auxiliary water storage tank 24, a circulating heating water pump 25, an oil-water vapor separation purification tank assembly 3, an oil-water separation tank 31, a purification tank 32, a circulating water inlet pipe 33, a circulating water outlet pipe 34, a releaser 35, a tank top exhaust breathing valve flame arrester 36, a tank body fluid level device 37, an oil outlet pipe 38, a connecting pipe 39, an oil well end 4, a refinery end 5, an external water storage tank 6, a main inlet 7, a branch inlet 71, a main outlet 8 and a branch outlet 81.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1, the oil-water separation purification tank heat pump heat recycling system device of the oil extraction and gathering and transportation station comprises an oil-water steam separation purification tank assembly 3, wherein one end of the oil-water steam separation purification tank assembly 3 is connected with an oil well end 4, the other end of the oil-water steam separation purification tank assembly is externally connected with an oil refinery end 5, the oil-water steam separation purification tank assembly 3 is connected with an input end of a high-temperature heat pump circulation assembly 1 through a circulation water outlet pipe 34, the high-temperature heat pump circulation assembly 1 is provided with two output ends, one output end of the high-temperature heat pump circulation assembly 1 is communicated with the oil-water steam separation purification tank assembly 3 through a circulation water inlet pipe 33, the remaining output end of the high-temperature heat pump circulation assembly 1 is connected with an input end of a low-temperature steam heat pump circulation assembly 2, the low-temperature steam heat pump circulation assembly 2 is provided with two output ends, and one output end of the low-temperature steam heat pump circulation assembly 2 is connected with an external water storage tank 6 connected with a sewage treatment station. In this embodiment, the oil-water mixture from the pumping well is heated and preheated, and then enters the oil-water vapor separation and purification tank assembly 3, and is further heated to 45 ℃ to separate/purify the oil from the water. The oil is sent to a combined station/oil refinery by a pipeline, sewage enters a sewage treatment system after being cooled by a heat pump, the high-temperature end of a primary steam heat pump returns heat to a station inlet to serve as a heating and preheating heat source, and the high-temperature end of a secondary steam heat pump returns heat to an oil-water separation purification tank to serve as a heat preservation and heating heat source.
Wherein the oil-water vapor separation and purification tank assembly 3 is provided with a total inlet 7 connected with the oil well end 4 and a total outlet 8 connected with the oil refinery end, and a circulating water inlet pipe 33 and the total inlet 7 of the oil-water vapor separation and purification tank assembly 3 are respectively connected with the oil well end 4 in parallel. Preferably, the oil-water vapor separation and purification tank assembly 3 has a branch inlet 71 and a branch outlet 81, and the branch inlet 71 of the oil-water vapor separation and purification tank assembly 3 is connected with the circulating water inlet pipe 33, and the branch outlet 81 of the oil-water vapor separation and purification tank assembly 3 is connected with the circulating water outlet pipe 34.
Further, the high-temperature heat pump circulation assembly 1 comprises a high-temperature steam generation sewage tank 12 connected with a circulation water outlet pipe 34, the high-temperature steam generation sewage tank 12 is connected with the input end of a steam-water mixer 13 through a high-temperature electric steam compressor 11, the input end of the steam-water mixer 13 is respectively connected with the high-temperature electric steam compressor 11 and the circulation water outlet pipe 34 in parallel, the output end of the steam-water mixer 13 is connected with a gas explosion device 15 through a sewage circulation pump 14, and the gas explosion device 15 is connected at one end of a circulation water inlet pipe 33.
When the part enters into the working state, the sewage with the temperature of 45-50 ℃ in the high-temperature steam generating sewage tank 12 is saturated and evaporated under the suction negative pressure of the high-temperature electric steam compressor 11 to generate water vapor with the temperature of 45-50 ℃, the water vapor is mechanically compressed to form superheated steam with the temperature of 60-65 ℃, the superheated steam is mixed with the sewage with the temperature of 45-50 ℃ in the steam-water vapor separation and purification tank assembly 3 sent by the sewage circulating pump 14 in the steam-water mixer 13, the temperature is increased by 3-5 ℃ and then mixed into air in the aerator 15, and then the mixed air is sent into the oil-water vapor separation and purification tank assembly 3 and flows out from the releaser 35, wherein oil beads contained in the mixed air are carried by air bubbles and rise to the upper part of the tank to be separated due to the volume weight difference. The temperature of the residual sewage in the high-temperature steam generation sewage tank 12 is reduced to 30-35 ℃ due to the evaporation of water vapor, and the reduced sewage is sent to the next stage.
Preferably, the low temperature steam heat pump cycle 2 here comprises a low temperature steam generating sewage tank 22 connected to a high temperature steam generating sewage tank 12, the low temperature steam generating sewage tank 22 is connected to an extrusion-side soda mixer 23 through a low temperature electric steam compressor 21, the extrusion-side soda mixer 23 is connected to the well end 4, and a circulation water inlet pipe 33 and a general inlet 7 are connected to the extrusion-side soda mixer 23 and are connected to each other, respectively, and the low temperature steam generating sewage tank 22 is connected to an external water storage tank 6 through the cycle. The circulation assembly here includes a circulation heating water pump 25 connected to an inlet of the low temperature steam generating sewage tank 22, and the circulation heating water pump 25 and the high temperature steam generating sewage tank 12 are respectively connected in parallel to the inlet of the low temperature steam generating sewage tank 22, and the low temperature steam generating sewage tank 22 has two outlets, and one of the outlets of the low temperature steam generating sewage tank 22 is connected to the low temperature electric vapor compressor 21, and the remaining outlet of the low temperature steam generating sewage tank 22 is connected to the circulation heating water pump 25 through an auxiliary water storage tank 24, and the external water storage tank 6 is respectively connected to one outlet of the auxiliary water storage tank 24 and the low temperature steam generating sewage tank 22, which is not connected to the low temperature electric vapor compressor 21.
When the part enters into a working state, the sewage at 30-45 ℃ in the low-temperature steam generating sewage tank 22 is saturated and evaporated under the suction negative pressure of the low-temperature electric steam compressor 21 to generate water vapor at 30-35 ℃, the water vapor is subjected to mechanical compression to become superheated steam at 45-50 ℃, the superheated steam is mixed with oil from an oil well in the extrusion-end steam-water mixer 23, so that the temperature of the oil outlet is raised to 35-45 ℃ through the oil-water separation tank 31, and the oil outlet is sent to the oil-water separation tank 31. The temperature of the remaining sewage in the low-temperature steam generating sewage tank 22 is reduced to 10-20 c by the evaporation of the steam, and the reduced amount is then sent to an in-station sewage treatment system. When the system device is started in the primary cold state, water with the temperature of 10-20 ℃ is injected from an external source into the auxiliary water storage tank 24, and the water is switched to circulate between the circulating heating water pump 25 and the low-temperature steam generation sewage tank 22 by a pipeline valve.
Further, the oil-water vapor separating and purifying tank assembly 3 herein includes a plurality of oil-water separating tanks 31 and a plurality of purifying tanks 32, and the oil-water separating tanks 31 and the purifying tanks 32 are sequentially connected in series and the adjacent two oil-water separating tanks 31, the adjacent two oil-water separating tanks 31 and the purifying tanks 32 and the adjacent two purifying tanks 32 are respectively connected through connecting pipes 39. Wherein, knockout drum and purification tank 32 are the cylindrical steel jar of taking heat preservation material, and knockout drum and purification tank 32 upper end are equipped with tank deck exhaust breather valve flame arrester 36 respectively, and knockout drum and purification tank 32 are inside to be equipped with respectively with the tank liquid level device 37 that connecting pipe 39 links to each other.
Preferably, the total inlet 7 is provided on one of the plurality of oil-water separation tanks 31 of the oil-water vapor separation purification tank assembly 3 which is farthest from the purification tank 32, and the total outlet 8 is provided on one of the plurality of purification tanks 32 of the oil-water vapor separation purification tank assembly 3 which is farthest from the oil-water separation tank 31, and the total outlet 8 is connected to the refinery side through an oil outlet pipe 38.
Wherein, the oil-water separation tank 31 and the purification tank 32 are respectively provided with a releaser 35, and the releasers 35 are respectively connected with the circulating water inlet pipe 33.
The oil-water separation tank 31 and the purification tank 32 mainly perform natural gravity separation and dynamic air floatation separation at the temperature of the oil-water mixture of 45-50 ℃ so that the water content in the oil is reduced to below 2%, and then the oil is delivered to the refinery of the combined station at the same temperature, and the safe operation of the tank body is ensured.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Although terms such as the high temperature heat pump cycle 1, the high temperature electric vapor compressor 11, the high temperature steam generation wastewater tank 12, the soda mixer 13, the wastewater circulation pump 14, the gas explosion device 15, the low temperature steam heat pump cycle 2, the low temperature electric vapor compressor 21, the low temperature steam generation wastewater tank 22, the extrusion-side soda mixer 23, the auxiliary water storage tank 24, the circulation heating water pump 25, the oil-water vapor separation purification tank assembly 3, the oil-water separation tank 31, the purification tank 32, the circulation water inlet pipe 33, the circulation water outlet pipe 34, the releaser 35, the tank top exhaust breathing valve flame arrestor 36, the tank body fluid level device 37, the oil outlet pipe 38, the connection pipe 39, the oil well side 4, the refinery side 5, the external water storage tank 6, the total inlet 7, the sub inlet 71, the total outlet 8, the sub outlet 81, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely for convenience in describing and explaining the nature of the invention; they are to be interpreted as any additional limitation that is not inconsistent with the spirit of the present invention.
Claims (8)
1. The oil-water separation purification tank heat pump heat recycling system device of the oil extraction collection and transportation station comprises an oil-water steam separation purification tank assembly (3), wherein one end of the oil-water steam separation purification tank assembly (3) is connected with an oil well end (4), the other end of the oil-water steam separation purification tank assembly is externally connected with an oil refinery end (5), the oil-water steam separation purification tank assembly (3) is connected with the input end of a high-temperature heat pump circulation assembly (1) through a circulation water outlet pipe (34), the high-temperature heat pump circulation assembly (1) is provided with two output ends, one output end of the high-temperature heat pump circulation assembly (1) is communicated with the oil-water steam separation purification tank assembly (3) through a circulation water inlet pipe (33), the remaining output end of the high-temperature heat pump circulation assembly (1) is connected with the input end of a low-temperature steam heat pump circulation assembly (2), the low-temperature steam heat pump circulation assembly (2) is provided with two output ends, one output end of the low-temperature steam heat pump circulation assembly (2) is connected with an external water storage tank (6) connected with the sewage treatment station; the oil-water steam separation purification tank assembly (3) is provided with a total inlet (7) connected with the oil well end (4) and a total outlet (8) connected with the oil refinery end, and the circulating water inlet pipe (33) and the total inlet (7) of the oil-water steam separation purification tank assembly (3) are respectively connected in parallel with the oil well end (4); the high-temperature heat pump circulating assembly (1) comprises a high-temperature steam generation sewage tank (12) connected with a circulating water outlet pipe (34), the high-temperature steam generation sewage tank (12) is connected with the input end of a steam-water mixer (13) through a high-temperature electric steam compressor (11), the input end of the steam-water mixer (13) is connected with the high-temperature electric steam compressor (11) and the circulating water outlet pipe (34) in parallel respectively, the output end of the steam-water mixer (13) is connected with a gas explosion device (15) through a sewage circulating pump (14), and the gas explosion device (15) is connected with one end of a circulating water inlet pipe (33).
2. The heat recycling system device of the oil extraction and gathering station oil-water separation and purification tank heat pump according to claim 1, wherein the oil-water-steam separation and purification tank assembly (3) is provided with a sub-inlet (71) and a sub-outlet (81), the sub-inlet (71) of the oil-water-steam separation and purification tank assembly (3) is connected with a circulating water inlet pipe (33), and the sub-outlet (81) of the oil-water-steam separation and purification tank assembly (3) is connected with a circulating water outlet pipe (34).
3. The oil extraction gathering and transportation station oil-water separation purification tank heat pump heat recycling system device according to claim 2, wherein the low-temperature steam heat pump circulation assembly (2) comprises a low-temperature steam generation sewage tank (22) connected with a high-temperature steam generation sewage tank (12), the low-temperature steam generation sewage tank (22) is connected with an extrusion end steam-water mixer (23) through a low-temperature electric steam compressor (21), the extrusion end steam-water mixer (23) is connected with an oil well end (4), the circulation water inlet pipe (33) and the total inlet (7) are respectively connected with the extrusion end steam-water mixer (23) in parallel, and the low-temperature steam generation sewage tank (22) is connected with an external water storage tank (6) through the circulation assembly.
4. The oil extraction gathering and transportation station oil-water separation purification tank heat pump recycling system device according to claim 3, wherein the circulating assembly comprises a circulating heating water pump (25) connected with an inlet of a low-temperature steam generation sewage tank (22), the circulating heating water pump (25) and the high-temperature steam generation sewage tank (12) are respectively connected in parallel with the inlet of the low-temperature steam generation sewage tank (22), the low-temperature steam generation sewage tank (22) is provided with two outlets, one outlet of the low-temperature steam generation sewage tank (22) is connected with a low-temperature electric steam compressor (21), the other outlet of the low-temperature steam generation sewage tank (22) is connected with the circulating heating water pump (25) through an auxiliary water storage tank (24), and the external water storage tank (6) is respectively connected with the auxiliary water storage tank (24) and one outlet of the low-temperature steam generation sewage tank (22) which is not connected with the low-temperature electric steam compressor (21).
5. The heat pump heat recycling system device of the oil extraction and transportation station oil-water separation purification tank according to claim 1, wherein the oil-water steam separation purification tank assembly (3) comprises a plurality of oil-water separation tanks (31) and a plurality of purification tanks (32), and the oil-water separation tanks (31) and the purification tanks (32) are sequentially connected in series and are connected with each other through connecting pipes (39) between two adjacent oil-water separation tanks (31), between two adjacent oil-water separation tanks (31) and two adjacent purification tanks (32).
6. The heat recycling system device of the oil extraction and gathering and transportation station oil-water separation purifying tank heat pump according to claim 5, wherein the total inlet (7) is arranged on one oil-water separation tank (31) farthest from the purifying tank (32) in a plurality of oil-water separation tanks (31) of the oil-water steam separation purifying tank assembly (3), the total outlet (8) is arranged on one purifying tank (32) farthest from the oil-water separation tank (31) in a plurality of purifying tanks (32) of the oil-water steam separation purifying tank assembly (3), and the total outlet (8) is connected with an oil refinery end through an oil outlet pipe (38).
7. The heat pump heat recycling system device for the oil extraction and transportation station oil-water separation purification tank of claim 5, wherein the oil-water separation tank (31) and the purification tank (32) are respectively provided with a releaser (35), and the releasers (35) are respectively connected through a circulating water inlet pipe (33).
8. The heat recycling system device of the oil extraction and transportation station oil-water separation purification tank heat pump according to claim 5, wherein the separation tank and the purification tank (32) are cylindrical steel tanks with heat insulation materials, tank top exhaust breather valve flame arresters (36) are respectively arranged at the upper ends of the separation tank and the purification tank (32), and tank body liquid level devices (37) connected with connecting pipes (39) are respectively arranged inside the separation tank and the purification tank (32).
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