CN106679176A - Oilfield reinjection water waste heat recycling heat pump unit and system thereof - Google Patents
Oilfield reinjection water waste heat recycling heat pump unit and system thereof Download PDFInfo
- Publication number
- CN106679176A CN106679176A CN201710095048.9A CN201710095048A CN106679176A CN 106679176 A CN106679176 A CN 106679176A CN 201710095048 A CN201710095048 A CN 201710095048A CN 106679176 A CN106679176 A CN 106679176A
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- CN
- China
- Prior art keywords
- water
- evaporator
- condenser
- pump
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H4/00—Fluid heaters characterised by the use of heat pumps
- F24H4/02—Water heaters
-
- 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
-
- 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
- F25B30/06—Heat pumps characterised by the source of low potential heat
-
- 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
Abstract
The invention relates to an oilfield reinjection water waste heat recycling heat pump unit and a system thereof. The heat pump unit and the system thereof are used for extracting low-grade waste heat contained in oilfield reinjection water by consuming little electric energy, and oil field mixed water is heated. The oilfield reinjection water waste heat recycling heat pump unit is composed of a steam compressor (1), a check valve (2), a vacuum pump (3), a condenser (4), a condenser water inlet (5), a condenser water outlet (6), an electric adjusting valve A (7), a water pump A (8), an evaporator (9), a water pump B (10), an evaporator water inlet (11), an evaporator water outlet (12), an electric adjusting valve B (13) and a spraying device (14).
Description
Technical field
The present invention relates to a kind of oil field reinjection water heat pump of recovering residual heat unit and its system, the source pump and its system are
By consuming a small amount of electric energy, the low-grade used heat that will contain in oil field reinjection water is extracted, and heats oil field water mixing.
Background technology
The energy is the important substance basis that human society is depended on for existence and development, is found and using cleaning and regenerative resource
It is a kind of effective way for solving energy shortage.For petroleum industry, energy saving, reduction oil-producing cost are extremely important.
Substantial amounts of 70-80 DEG C of hot water is needed the need for technique, during oil exploitation, during oil production, oil transportation
Water mixing process, existing method is mainly a certain amount of self-produced combustion gas of consumption, heated with gas-fired water heating boiler, due to water
Amount is larger, and this process consumes substantial amounts of automatic gas-producing.
And substantial amounts of low-temperature waste heat is there is in process of oil production, such as in oil exploitation, to returning for underground re-injection
Water filling, temperature is not used and is directly discharged into underground at 30-40 DEG C, causes certain energy waste;Further, since water mixing
Water quality is more complicated, and the heat exchanger tube service life of the firing equipment currently applied, such as gas-fired water heating boiler is relatively low, and general 3
Need in or so year to change, cause maintenance cost higher.
The content of the invention
During solution oil exploitation, heating water mixing air consumption is big, high energy consumption;The firing equipment currently applied is changed
Heat pipe service life is relatively low, and maintenance cost is higher;Low grade heat energy in oil field reinjection water is not used and is directly discharged into underground,
Certain energy waste is caused, the invention provides a kind of source pump and its system for extracting heat of solidification.
Application principle:
1st, as shown in figure 1, a kind of oil field reinjection water heat pump of recovering residual heat unit of the invention, by vapour compression machine, check-valves,
Vavuum pump, condenser, condenser water inlet, leaving condenser water mouth, electric control valve A, water pump A, evaporator, water pump B, evaporator
Water inlet, evaporator delivery port, motor-driven valve section valve B, spray equipment composition, evaporator is connected with Pistonless compressor air entry, cold
Condenser is connected with Pistonless compressor exhaust outlet, and spray equipment is provided with evaporator, and evaporator water inlet is connected with spray equipment, is steamed
Hair device water inlet and spray equipment between be provided with electric control valve B, evaporator delivery port is connected with water pump B, then with evaporator phase
Even;Vapour compression machine exhaust outlet is provided with check-valves, and the blast pipe being connected with vapour compression machine is directly entered condenser bottom, outlet
Below the condenser water surface, condenser overhead is connected with vavuum pump, and condenser water inlet is connected with electric control valve A, then with
Condenser is connected, and leaving condenser water mouthful is connected with water pump A, then is connected with condenser.
2nd, as shown in figure 1, heating principle:Oil reinjected water is entered in evaporator by evaporator water inlet, by spray equipment
Spray atomizing, vapour compression machine absorbs the steam in evaporator, the pressure in evaporator is less than the evaporating pressure of reinjected water, by
Relatively low in the pressure ratio in evaporator, the part heat absorption evaporation of the reinjected water of spray is changed into water vapour, into vapour compression machine, separately
A part of heat release is cooled, and is discharged through evaporator delivery port by water pump B, the liquid level in electric control valve B regulation evaporators,
Liquid level is located under spray equipment, distance >=30cm of the liquid level away from spray equipment bottom nozzle;The water vapour of low-temp low-pressure enters
Enter vapour compression machine to be compressed, be changed into the water vapour of HTHP, condenser is entered by check-valves, directly with condenser in
Water carry out condensation by mixing, the water mixing that heating is entered by condenser water inlet, mixed hot water is by the condensed device water outlets of water pump A
Mouth discharge system, the liquid level in electric control valve A regulation condensers, liquid level is located on condenser water inlet, with condensation
Distance >=the 30cm of device water inlet.
3rd, as shown in Fig. 2 a kind of oil field reinjection water heat pump of recovering residual heat system of the invention, by treated water tank, outer water-delivery pump,
Oil-field flooding station, source pump, sewage precipitation tank water mixing pump, gas-fired heater, well system composition, evaporator water inlet, steaming
Hair device delivery port is connected to treated water tank to the pipeline between oil-field flooding station, the reinjected water in treated water tank, through outer water delivery
Pump point two-way is delivered to oil-field flooding station, is all the way to be fed directly to oil by treated water tank to the pipeline between oil-field flooding station
Field water-injection station, is entered in evaporator by evaporator water inlet, after being cooled through itself evaporation, is arranged by evaporator delivery port
Go out, flow into oil-field flooding station;Sewage in sewage precipitation tank separately flows into the cold of gas-fired heater and source pump through water mixing pump
Condenser, after being heated through gas-fired heater and source pump, flows into well system water mixing heat tracing.
Brief description of the drawings
A kind of Fig. 1-oil field reinjection water heat pump of recovering residual heat set structure schematic diagram of the invention
A kind of Fig. 2-oil field reinjection water heat pump of recovering residual heat systematic schematic diagram of the invention
Accompanying drawing drawing explanation
Fig. 1, Fig. 2,1- vapour compression machines;2- check-valves;3- vavuum pumps;4- condensers;5- condenser water inlets;6- is condensed
Device delivery port;7- electric control valves A;8- water pumps A;9- evaporators;10- water pumps B;11- evaporator water inlets;12- evaporators go out
The mouth of a river;13- electric control valves B;14- spray equipments;15- treated water tanks;The outer water-delivery pumps of 16-;17- oil-field floodings station;18- heat pumps
Unit;19- sewage precipitation tanks;20- water mixing pumps;21- gas-fired heaters;22- well systems.
Specific embodiment
The invention discloses a kind of oil field reinjection water heat pump of recovering residual heat unit and its system, to solve oil exploitation process
In, heating water mixing air consumption is big, high energy consumption;The firing equipment heat exchanger tube service life currently applied is relatively low, maintenance cost
It is higher;Low grade heat energy in oil field reinjection water is not used and is directly discharged into underground, causes certain energy waste.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
1st, as shown in figure 1, a kind of oil field reinjection water heat pump of recovering residual heat unit of the invention, by vapour compression machine (1), non-return
Valve (2), vavuum pump (3), condenser (4), condenser water inlet (5), leaving condenser water mouthful (6), electric control valve A (7), water pump
A (8), evaporator (9), water pump B (10), evaporator water inlet (11), evaporator delivery port (12), motor-driven valve section valve B (13), spray
Shower device (14) is constituted, and evaporator (9) is connected with Pistonless compressor (1) air entry, and condenser (4) is arranged with Pistonless compressor (1)
Gas port is connected, and spray equipment (14) is provided with evaporator (9), and evaporator water inlet (11) is connected with spray equipment (14), evaporation
Electric control valve B (13), evaporator delivery port (12) and water pump B (10) are provided between device water inlet (11) and spray equipment (14)
It is connected, then is connected with evaporator (9);Vapour compression machine (1) exhaust outlet is provided with check-valves (2), is connected with vapour compression machine (1)
Blast pipe is directly entered condenser (4) bottom, and outlet is located at below condenser (4) water surface, condenser (4) top and vavuum pump
(3) it is connected, condenser water inlet (5) is connected with electric control valve A (7), then is connected with condenser (4), leaving condenser water mouthful (6)
It is connected with water pump A (8), then is connected with condenser (4).
2nd, as shown in figure 1, heating principle:Oil reinjected water is entered in evaporator (9) by evaporator water inlet (11), by spraying
Shower device (14) spray atomizing, vapour compression machine (1) absorbs the steam in evaporator (9), is less than the pressure in evaporator (9)
The evaporating pressure of reinjected water, because the pressure ratio in evaporator (9) is relatively low, the reinjected water part heat absorption evaporation of spray is changed into water
Steam, into vapour compression machine (1), another part heat release is cooled, and is discharged through evaporator delivery port (12) by water pump B (10),
Electric control valve B (13) adjusts the liquid level in evaporator (9), and liquid level is located under spray equipment (14), and liquid level is away from spray
Distance >=the 30cm of device (14) bottom nozzle;The water vapour of low-temp low-pressure is compressed into vapour compression machine (1), is changed into
The water vapour of HTHP, condenser (4) is entered by check-valves (2), directly carries out mixing cold with the water in condenser (4)
Solidifying, the water mixing that heating is entered by condenser water inlet (5), mixed hot water is arranged by the condensed device delivery ports (6) of water pump A (8)
Go out system, electric control valve A (7) adjusts the liquid level in condenser (4), and liquid level is located on condenser water inlet (5), with
Distance >=the 30cm of condenser water inlet.
3rd, as shown in Fig. 2 a kind of oil field reinjection water heat pump of recovering residual heat system of the invention, by treated water tank (15), outer defeated
Water pump (16), oil-field flooding station (17), source pump (18), sewage precipitation tank (19) water mixing pump (20), gas-fired heater (21),
Well system (22) is constituted, and evaporator water inlet (11), evaporator delivery port (12) are connected to treated water tank (15) to oil field and note
On pipeline between water station (17), the reinjected water in treated water tank (15) is delivered to oil field and notes through outer water-delivery pump (16) point two-way
Water station (17), is all the way to be fed directly to oil-field flooding station by treated water tank (15) to the pipeline between oil-field flooding station (17)
(17), entered in evaporator (9) by evaporator water inlet (11), after being cooled through itself evaporation, by evaporator water outlet
Mouth (12) discharge, flows into oil-field flooding station (17);Sewage in sewage precipitation tank (19) separately flows into combustion gas through water mixing pump (20)
The condenser (4) of heating furnace (21) and source pump (18), after being heated through gas-fired heater (21) and source pump (18), flows into
Well system (22) water mixing heat tracing.
Each embodiment is described by the way of progressive in this specification, and what each embodiment was stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or uses the present invention.
Various modifications to these embodiments will be apparent for one of skill in the art, as defined herein general
Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will not
Can be intended to be limited to the embodiments shown herein, and be to fit to consistent with principles disclosed herein and features of novelty
Scope most wide.
Claims (3)
1. a kind of oil field reinjection water heat pump of recovering residual heat unit, it is characterised in that by vapour compression machine (1), check-valves (2), vacuum
Pump (3), condenser (4), condenser water inlet (5), leaving condenser water mouthful (6), electric control valve A (7), water pump A (8), evaporation
Device (9), water pump B (10), evaporator water inlet (11), evaporator delivery port (12), motor-driven valve section valve B (13), spray equipment
(14) constitute, evaporator (9) is connected with Pistonless compressor (1) air entry, condenser (4) connects with Pistonless compressor (1) exhaust outlet
Connect, spray equipment (14) is provided with evaporator (9), evaporator water inlet (11) is connected with spray equipment (14), evaporator water inlet
Electric control valve B (13) is provided between mouth (11) and spray equipment (14), evaporator delivery port (12) is connected with water pump B (10),
It is connected with evaporator (9) again;Vapour compression machine (1) exhaust outlet is provided with check-valves (2), the exhaust being connected with vapour compression machine (1)
Pipe is directly entered condenser (4) bottom, and outlet is located at below condenser (4) water surface, condenser (4) top and vavuum pump (3) phase
Even, condenser water inlet (5) is connected with electric control valve A (7), then is connected with condenser (4), leaving condenser water mouth (6) and water
Pump A (8) is connected, then is connected with condenser (4).
2. a kind of oil field reinjection water heat pump of recovering residual heat unit according to claim 1, it is characterised in that heat principle:Stone
Oil recirculated water is entered in evaporator (9) by evaporator water inlet (11), by spray equipment (14) spray atomizing, vapour compression machine
(1) steam in evaporator (9) is absorbed, makes the pressure in evaporator (9) less than the evaporating pressure of reinjected water, due to evaporator
(9) pressure ratio in is relatively low, and the reinjected water part heat absorption evaporation of spray is changed into water vapour, another into vapour compression machine (1)
Partial exothermic is cooled, and is discharged through evaporator delivery port (12) by water pump B (10), and electric control valve B (13) adjusts evaporator (9)
Interior liquid level, liquid level is located under spray equipment (14), and distance of the liquid level away from spray equipment (14) bottom nozzle >=
30cm;The water vapour of low-temp low-pressure is compressed into vapour compression machine (1), is changed into the water vapour of HTHP, by non-return
Valve (2) enters condenser (4), directly carries out condensation by mixing with the water in condenser (4), and heating is entered by condenser water inlet (5)
The water mixing for entering, mixed hot water is by condensed device delivery port (6) discharge systems of water pump A (8), and electric control valve A (7) regulations are cold
Liquid level in condenser (4), liquid level is located on condenser water inlet (5), the distance >=30cm with condenser water inlet.
3. a kind of oil field reinjection water heat pump of recovering residual heat system, it is characterised in that comprising claim 1-2 any one, by purifying
Water pot (15), outer water-delivery pump (16), oil-field flooding station (17), source pump (18), sewage precipitation tank (19) water mixing pump (20), combustion
Gas heating furnace (21), well system (22) composition, evaporator water inlet (11), evaporator delivery port (12) are connected to treated water tank
(15) on the pipeline between oil-field flooding station (17), the reinjected water in treated water tank (15), through outer water-delivery pump (16) point two-way
Oil-field flooding station (17) is delivered to, is directly conveyed by treated water tank (15) to the pipeline between oil-field flooding station (17)
To oil-field flooding station (17), entered in evaporator (9) by evaporator water inlet (11), after being cooled through itself evaporation,
Discharged by evaporator delivery port (12), flow into oil-field flooding station (17);Sewage in sewage precipitation tank (19) is through water mixing pump (20)
The condenser (4) of gas-fired heater (21) and source pump (18) is separately flowed into, through gas-fired heater (21) and source pump
(18) after heating, well system (22) water mixing heat tracing is flowed into.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710095048.9A CN106679176A (en) | 2017-02-22 | 2017-02-22 | Oilfield reinjection water waste heat recycling heat pump unit and system thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN201710095048.9A CN106679176A (en) | 2017-02-22 | 2017-02-22 | Oilfield reinjection water waste heat recycling heat pump unit and system thereof |
Publications (1)
Publication Number | Publication Date |
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CN106679176A true CN106679176A (en) | 2017-05-17 |
Family
ID=58862322
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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CN201710095048.9A Pending CN106679176A (en) | 2017-02-22 | 2017-02-22 | Oilfield reinjection water waste heat recycling heat pump unit and system thereof |
Country Status (1)
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CN (1) | CN106679176A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109489298A (en) * | 2018-12-25 | 2019-03-19 | 杨胜东 | A kind of oil field reinjection water afterheat utilizing system with anti-blocking on-line cleaning device |
CN113847247A (en) * | 2021-10-11 | 2021-12-28 | 广东肯富来泵业股份有限公司 | Spray cooling assisted oilfield associated gas recovery liquid ring compressor system and method |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2632592Y (en) * | 2003-06-18 | 2004-08-11 | 孟富春 | Fuel oil and fuel hot pump crude oil heater |
CN1632424A (en) * | 2004-11-17 | 2005-06-29 | 冯太和 | System and method for heating and refrigeration by employing oil field re-injection water |
CN201340013Y (en) * | 2008-12-31 | 2009-11-04 | 张崇荣 | Heat pump unit heat tracing and heating system |
CN201803524U (en) * | 2010-09-14 | 2011-04-20 | 滕飞 | Medium and high temperature heat pump device for recovering waste heat from sewage of oilfield |
CN205002378U (en) * | 2015-08-25 | 2016-01-27 | 中石化南京工程有限公司 | Oil field sewage waste heat recovery system |
KR20160147074A (en) * | 2015-06-11 | 2016-12-22 | 강기철 | Hot water boiler with air conditioning heat |
-
2017
- 2017-02-22 CN CN201710095048.9A patent/CN106679176A/en active Pending
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2632592Y (en) * | 2003-06-18 | 2004-08-11 | 孟富春 | Fuel oil and fuel hot pump crude oil heater |
CN1632424A (en) * | 2004-11-17 | 2005-06-29 | 冯太和 | System and method for heating and refrigeration by employing oil field re-injection water |
CN201340013Y (en) * | 2008-12-31 | 2009-11-04 | 张崇荣 | Heat pump unit heat tracing and heating system |
CN201803524U (en) * | 2010-09-14 | 2011-04-20 | 滕飞 | Medium and high temperature heat pump device for recovering waste heat from sewage of oilfield |
KR20160147074A (en) * | 2015-06-11 | 2016-12-22 | 강기철 | Hot water boiler with air conditioning heat |
CN205002378U (en) * | 2015-08-25 | 2016-01-27 | 中石化南京工程有限公司 | Oil field sewage waste heat recovery system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109489298A (en) * | 2018-12-25 | 2019-03-19 | 杨胜东 | A kind of oil field reinjection water afterheat utilizing system with anti-blocking on-line cleaning device |
CN113847247A (en) * | 2021-10-11 | 2021-12-28 | 广东肯富来泵业股份有限公司 | Spray cooling assisted oilfield associated gas recovery liquid ring compressor system and method |
CN113847247B (en) * | 2021-10-11 | 2024-04-12 | 广东肯富来泵业股份有限公司 | Spray cooling-assisted oilfield associated gas recovery liquid ring compressor system and method |
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Application publication date: 20170517 |