WO2022011796A1 - 一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统 - Google Patents

一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统 Download PDF

Info

Publication number
WO2022011796A1
WO2022011796A1 PCT/CN2020/111716 CN2020111716W WO2022011796A1 WO 2022011796 A1 WO2022011796 A1 WO 2022011796A1 CN 2020111716 W CN2020111716 W CN 2020111716W WO 2022011796 A1 WO2022011796 A1 WO 2022011796A1
Authority
WO
WIPO (PCT)
Prior art keywords
heat
water
pipe
pump
module
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.)
Ceased
Application number
PCT/CN2020/111716
Other languages
English (en)
French (fr)
Inventor
宋永臣
杨明军
王欣茹
郑嘉男
赵佳飞
蒋兰兰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dalian University of Technology
Original Assignee
Dalian University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from CN202010694032.1A external-priority patent/CN111852407B/zh
Priority claimed from CN202010694018.1A external-priority patent/CN111852406B/zh
Priority claimed from CN202010694604.6A external-priority patent/CN111852408B/zh
Application filed by Dalian University of Technology filed Critical Dalian University of Technology
Priority to US17/415,986 priority Critical patent/US11879310B2/en
Publication of WO2022011796A1 publication Critical patent/WO2022011796A1/zh
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/002—Machines, plants or systems, using particular sources of energy using solar energy
    • F25B27/007—Machines, plants or systems, using particular sources of energy using solar energy in sorption type systems
    • 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
    • E21B43/01—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells specially adapted for obtaining from underwater installations
    • 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
    • E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
    • E21B41/0099—Equipment or details not covered by groups E21B15/00 - E21B40/00 specially adapted for drilling for or production of natural hydrate or clathrate gas reservoirs; Drilling through or monitoring of formations containing gas hydrates or clathrates
    • 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
    • E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
    • E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
    • 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
    • E21B43/295—Gasification of minerals, e.g. for producing mixtures of combustible gases
    • 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
    • E21B43/30—Specific pattern of wells, e.g. optimising the spacing of wells
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01K—STEAM ENGINE PLANTS; STEAM ACCUMULATORS; ENGINE PLANTS NOT OTHERWISE PROVIDED FOR; ENGINES USING SPECIAL WORKING FLUIDS OR CYCLES
    • F01K17/00—Using steam or condensate extracted or exhausted from steam engine plant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S20/00—Solar heat collectors specially adapted for particular uses or environments
    • F24S20/40—Solar heat collectors combined with other heat sources, e.g. using electrical heating or heat from ambient air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24S—SOLAR HEAT COLLECTORS; SOLAR HEAT SYSTEMS
    • F24S90/00—Solar heat systems not otherwise provided for
    • 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
    • F25B15/00—Sorption machines, plants or systems, operating continuously, e.g. absorption 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
    • F25B27/00—Machines, plants or systems, using particular sources of energy
    • F25B27/02—Machines, plants or systems, using particular sources of energy using waste heat, e.g. from internal-combustion engines
    • 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
    • F25B30/04—Heat pumps of the sorption type
    • 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
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A30/00—Adapting or protecting infrastructure or their operation
    • Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/40—Solar thermal energy, e.g. solar towers

Definitions

  • the invention belongs to the technical field of marine oil and gas resource development, and aims at the efficiency problem existing in the exploitation of marine natural gas hydrate at present, and utilizes the absorption heat pump technology to improve the waste heat grade of the flue gas of the marine solar energy and the marine generator, so as to provide the advantages for the exploitation of marine natural gas hydrate.
  • the invention relates to heat compensation, in particular to a natural gas hydrate high-efficiency exploitation system which utilizes flue gas waste heat/solar absorption heat pump to compensate reservoir heat.
  • Natural gas hydrate hereinafter referred to as hydrate, commonly known as combustible ice
  • natural gas hydrate decomposes, which is an endothermic reaction, and the decomposed natural gas also carries some heat when it is produced. Therefore, during the process of natural gas hydrate decomposition, the temperature of the reservoir will decrease.
  • the decomposition of natural gas hydrate is affected by the temperature and pressure of the reservoir. Under the same pressure, the higher the temperature, the greater the driving force of decomposition and the faster the decomposition. Therefore, in order to achieve continuous and rapid decomposition of hydrate and efficient gas production, it is necessary to ensure the temperature of the reservoir, that is, to perform heat compensation for the reservoir. At present, there is still no effective reservoir heat compensation scheme in the process of marine gas hydrate extraction.
  • the flue gas discharged from the steam turbine on the offshore platform contains a large amount of waste heat that can be recycled.
  • the solar energy content is abundant in the marine environment, but the grade is not high and is greatly affected by the weather, so it is unstable.
  • Absorption heat pump is a device that transfers heat from low temperature to high temperature as compensation for thermal energy. It has the dual functions of saving energy and protecting the environment. It can increase the temperature of the waste heat of gas turbine generator flue gas and solar energy in offshore oilfields for hydrate mining. .
  • the present invention uses the waste heat of the flue gas of the gas turbine generator in the offshore oil field and the abundant solar energy at sea as the low-temperature heat source of the absorption heat pump to release high-grade heat, and combined with the marine natural gas hydrate mining technology, provides a flue gas utilizing Efficient gas hydrate production system with waste heat/solar absorption heat pump compensating reservoir heat.
  • a natural gas hydrate high-efficiency exploitation system utilizing flue gas waste heat/solar absorption heat pump to compensate reservoir heat comprising a heat source absorption system 1, a heat pump heating system 2 and a reservoir heat compensation system 3;
  • the heat source absorption system 1 is mainly composed of a flue gas heat exchange part and a solar heat collection part;
  • the flue gas heat exchange part includes a flue gas heat exchanger 4 and a first flow regulating valve 5, and the circulating water heated by the hot flue gas in the flue gas heat exchanger 4 flows into the heat pump heating system 2 through the first flow regulating valve 5. ; Described first flow control valve 5 is used to adjust the temperature of the circulating water that the flue gas heat exchange part enters the heat pump heating system 2;
  • the solar heat collection part includes a second flow control valve 7 and a solar heat collector 6.
  • the solar heat collector 6 is used to heat low-temperature circulating water, and the heated circulating water flows into the heat pump heating system through the second flow control valve 7. 2;
  • the second flow control valve 7 is used to adjust the temperature of the circulating water entering the heat pump heating system 2 by the solar heat collection part;
  • the described heat pump heating system 2 is mainly composed of a generator module, a condenser module, an absorber module and an evaporator module;
  • Described generator module comprises condenser pipe 9, concentrated solution pipe 10 and solution circulation pump 11, condenser pipe 9 realizes the communication between generator 8 and condenser module, the sprayer of generator 8 passes through solution circulation pump 11 and absorber.
  • the modules are connected, the concentrated solution pipe 10 realizes the communication between the generator 8 and the absorber module, the inlet of the first-level heat release pipe in the generator 8 is connected to the heat source absorption system 1, and the outlet is connected to the evaporator module;
  • the absorber module includes an absorber 12, a concentrated solution pipe 10, an evaporation pipe 13, a dilute solution pipe 17, a solution circulation pump 11 and a water delivery pump 36.
  • the evaporation pipe 13 realizes the connection between the absorber 12 and the evaporator module, and the dilute solution
  • the pipe 17 is connected to the lower part of the absorber 12 and the solution circulation pump 11, the concentrated solution pipe 10 is connected to the sprayer of the absorber 12, the inlet of the primary heating pipe in the absorber 12 is connected to the water pump 36, and the outlet is connected to the condenser module;
  • the condenser module includes a condenser 14, a condenser pipe 9, a condensed water pipe 15, a U-shaped connector 16 and a hot water storage tank 21.
  • the condenser pipe 9 realizes the communication between the condenser 14 and the generator module, and the condensed water pipe 15 communicates.
  • the condenser 14 is connected to the U-shaped communication device 16, the inlet of the secondary heating pipe in the condenser 14 is connected to the absorber module, and the outlet is connected to the hot water storage tank 21;
  • the evaporator module includes an evaporator 18, a U-shaped connector 16, a condensed water pump 20, an evaporation pipe 13 and a circulating water pump 19.
  • the condensed water sprayer in the evaporator 18 is connected to the U-shaped connector in the upper part of the evaporator 18. 16 is connected, the inlet of the secondary heat release pipe in the evaporator 18 is connected to the absorber module, the outlet of the evaporator 18 is connected to the circulating water pump 19, and the condensate water pump 20 is below the evaporator 18, connecting the bottom outlet of the evaporator 18 and the evaporator 18.
  • condensate sprinkler
  • the reservoir heat compensation system 3 is mainly composed of an injection well module and a production well module;
  • the injection well module includes a hot water storage tank 21, an injection pump 22, an injection well 27, a spherical nozzle 23, a temperature controller 24, a thermocouple 25 and an auxiliary heater 26.
  • One end of the injection pump 22 is connected to the hot water storage tank.
  • the other end of the tank 21 is connected to the injection well 27; the end of the injection well 27 is connected to the spherical nozzle 23, and the temperature of the hot water storage tank 21 is controlled by the temperature controller 24 according to the signal of the thermocouple 25 on the inner wall of the hot water storage tank 21.
  • the constant temperature control is specifically realized by controlling the switch of the auxiliary heater 26 on the periphery of the hot water storage tank 21;
  • the mining well module includes a mining well 28, a seawater storage tank 29, a gas-liquid separator 30, a gas collecting cylinder 31, a suction pump 32, a horizontal well 33, a multi-cluster mining hole 35, a water delivery pump 36, a floating ball valve 34 and Water outlet pipe 37, the bottom of the production well 28 is connected to a horizontal well 33 with multiple clusters of production holes 35 on the periphery, a gas-liquid separator 30 is connected above the production well 28, the top of the gas-liquid separator 30 is connected to a gas cylinder 31, and the lower part is connected to a water outlet pipe 37 , the lower part of the seawater storage tank 29 is connected to the suction pump 32, the middle part is connected to the transport pump 36, and the seawater level of the seawater storage tank 29 is controlled by the float valve 34 inside the seawater storage tank 29.
  • the suction pump 32 at the bottom of the seawater storage tank 29 accomplish;
  • the system When the system is running, it includes circulating water flow, solution circulating flow and injection water flow;
  • the circulating water absorbs heat in the heat exchange tube 7 and the solar heat collector 6 and merges, enters the primary heat release tube in the generator 8 to exchange heat with the dilute solution outside the tube, and then enters the secondary heat release tube in the evaporator 18. It exchanges heat with the condensed water outside the tube, and then returns to the heat source absorption system 1 through the circulating water pump 19, and flows into the heat exchange tube 7 and the solar collector 6 respectively;
  • the solution circulates in the absorber module, the generator module, the condenser module and the evaporator module, the dilute solution exchanges heat with the circulating water in the first-stage heat release pipe in the generator 8, the water in the solution becomes water vapor, and the remaining The lower solution becomes a concentrated solution and enters the absorber 12.
  • the water vapor enters the condenser 14 and exchanges heat with the injected water in the secondary heating pipe to become condensed water.
  • the circulating water in the secondary heat release pipe exchanges heat, evaporates into water vapor, enters the absorber 12 and mixes with the concentrated solution to become a dilute solution, and at the same time exchanges heat with the injection water of the primary heating pipe in the absorber 12;
  • the injection water flows in the seawater storage tank 29, the absorber 12, the condenser 14 and the injection well 27, and the injected water in the seawater storage tank 29 enters the first-stage heating pipe in the absorber 12 through the water pump 36 to be mixed with the water.
  • the concentrated solution outside the tube exchanges heat, then enters the secondary heating tube in the condenser 14 to exchange heat with the water vapor outside the tube, and then enters the hot water storage tank 21 for heat preservation, and the hot water in the hot water storage tank 21 is injected through the
  • the pump 22 enters the injection well 27, and the hot injection water is uniformly dispersed and sprayed at the spherical nozzle 23 to compensate for the heat required for hydrate decomposition.
  • the injected water and the natural gas and water produced by the hydrate decomposition are passed from the multi-cluster mining holes 35 through the water.
  • the horizontal well 33 enters the exploitation well 28, and then enters the gas-liquid separator 30.
  • the produced water is discharged from the water outlet pipe 38 to the seawater layer, and the produced natural gas enters the collector from the top.
  • the condenser module and the evaporator module are used in pairs with the injection well module.
  • the spherical nozzle 23 is spherical and porous, and the heat injection water is dispersed and uniformly injected into the reservoir, which facilitates the rapid and effective heat transfer of the reservoir, and improves the heat compensation speed of the reservoir.
  • the present invention proposes a natural gas hydrate high-efficiency exploitation system that utilizes flue gas waste heat/solar absorption heat pump to compensate reservoir heat, combines absorption heat pump technology with marine natural gas hydrate exploitation technology, and utilizes an offshore platform It solves the problem of heat source and energy consumption in the process of natural gas hydrate exploitation, and provides a commercially feasible solution for realizing large-scale exploitation of natural gas hydrate.
  • Fig. 1 is a schematic diagram of a high-efficiency natural gas hydrate extraction system utilizing flue gas waste heat/solar absorption heat pump to compensate reservoir heat.
  • FIG. 2 is a schematic diagram of the spherical nozzle 32 in the high-efficiency exploitation system of natural gas hydrate which utilizes the waste heat of flue gas/solar absorption heat pump to compensate the heat of the reservoir.
  • Fig. 3 is a schematic diagram of a multi-injection well mode of a natural gas hydrate high-efficiency exploitation system utilizing flue gas waste heat/solar absorption heat pump to compensate reservoir heat.
  • a natural gas hydrate efficient exploitation system utilizing flue gas waste heat/solar absorption heat pump to compensate reservoir heat includes a heat source absorption system 1 , a heat pump heating system 2 and a reservoir heat compensation system 3 .
  • the heat source absorption system 1 consists of a flue gas heat exchange part and a solar heat collection part;
  • the flue gas heat exchange part includes a flue gas heat exchanger 4 and a first flow regulating valve 5.
  • the heat exchange tube is placed in the flue gas direct contact heat exchanger 4, and the hot smoke entering the flue gas heat exchanger 4 from the flue gas inlet
  • the gas exchanges heat with the low-temperature circulating water in the heat exchange tube, the low-temperature flue gas after heat exchange is discharged from the flue gas outlet, and the circulating water heated by the hot flue gas flows into the heat pump heating system 2 through the first flow regulating valve 5;
  • the solar heat collection part includes a second flow regulating valve 7 and a solar heat collector 6.
  • the solar heat collector 6 is used to heat low-temperature circulating water, and the heated circulating water flows into the heat pump heating system 2 through the second flow regulating valve 7;
  • the first flow control valve 5 and the second flow control valve 7 respectively adjust the temperature of the circulating water entering the heat pump heating system 2 from the flue gas heat exchange part and the solar heat collection part.
  • the heat pump heating system 2 consists of a generator module, a condenser module, an absorber module, and an evaporator module;
  • the generator module includes a condenser tube 9, a concentrated solution tube 10 and a solution circulation pump 11.
  • the dilute solution sprayer and the first-stage heat release tube are arranged inside the generator.
  • the condenser tube 9 is connected to the upper part of the generator and the condenser module, and the dilute solution is sprayed.
  • the device is placed in the upper part of the generator, communicated with the absorber module through the solution circulation pump 11, the concentrated solution pipe 1 is communicated with the lower part of the generator and the absorber module, and communicated with the absorber module, and the first-stage heat release pipe is located below the dilute solution sprayer , the hot circulating water from the heat source absorption system 1 flows in from the top of the first-stage heat release pipe, and exchanges heat with the dilute solution sprayed evenly by the dilute solution sprayer in the generator, and the water vapor evaporated in the dilute solution flows upward through condensation
  • the tube 9 enters the condenser module, and the evaporated diluted solution becomes a concentrated solution and flows downwards and enters the absorber module through the concentrated solution tube 10, and the circulating water after heat exchange flows out from the bottom of the primary heat release tube and enters the evaporator module;
  • the absorber module includes an absorber 12, a concentrated solution pipe 10, an evaporation pipe 13, a dilute solution pipe 17, a solution circulation pump 11 and a water delivery pump 36.
  • the concentrated solution sprayer and the first-stage heating pipe are respectively placed inside the absorber 12 to evaporate
  • the pipe 13 connects the upper part of the absorber 12 and the evaporator module, the concentrated solution sprayer is above the primary heating pipe, the dilute solution pipe 17 is at the lower part of the absorber, and flows into the concentrated solution sprayer through the concentrated solution pipe 10 and is sprayed uniformly.
  • the solution absorbs the water vapor flowing into the evaporator module through the evaporation tube 13 to become a dilute solution and exchanges heat with the injected water from the reservoir heat compensation system 3 in the primary heating tube, and the dilute solution after heat exchange passes through the dilute solution tube 17 and
  • the solution circulating pump 11 connected to the generator module is connected, and the injected water after heat exchange flows out from the primary heating pipe and enters the condenser module;
  • the condenser module includes a condenser 14, a condenser pipe 9, a condensate water pipe 15, a U-shaped connector 16 and a hot water storage tank 21.
  • the secondary heating pipe is placed in the middle of the condenser 14, and the condenser pipe 9 is connected to the upper part of the condenser 14.
  • the condensed water pipe 15 communicates with the lower part of the condenser 14 and the U-shaped communication device 16, and the water vapor entering the upper part of the condenser 14 through the condensing pipe 9 exchanges heat with the injected water from the absorber module in the secondary heating pipe.
  • the last injected water flows into the hot water storage tank 21, and the condensed water formed after the water vapor heat exchange flows into the condensed water pipe 15 from the lower part of the condenser 14, and then flows into the U-shaped communication device 16 communicated with the evaporator module;
  • the evaporator module includes an evaporator 18, a U-shaped communication device 16, a condensate water pump 20, an evaporation pipe 13 and a circulating water pump 19.
  • the condensed water sprayer communicates with the U-shaped communication device 16 in the upper part of the evaporator 18, and the secondary heat release pipe is in the upper part of the evaporator 18.
  • the outlet is connected to the circulating water pump 19 outside the evaporator 18, and the condensate water pump 20 is below the evaporator 18, connecting the bottom of the evaporator 18 and the condensate water sprayer, and flows into the condensate water sprayer from the U-shaped communication device 16.
  • the condensed water of the shower is evenly sprayed above the secondary heat release pipe, and exchanges heat with the circulating water in the secondary heat release pipe.
  • the circulating water after heat exchange enters the heat source absorption system 1 through the circulating water pump 19, and the condensed water after heat exchange A part becomes water vapor and enters the evaporation pipe 13, and a part is sent back to the condensed water shower by the condensate water pump 20 at the bottom of the evaporator 18 in the form of liquid;
  • the condenser module and the evaporator module are used in pairs with the injection well module.
  • the reservoir heat compensation system 3 is mainly composed of an injection well module and a production well module;
  • the injection well module includes a hot water storage tank 21, an injection pump 22, an injection well 27, a spherical nozzle 23, a temperature controller 24, a thermocouple 25 and an auxiliary heater 26, the outlet of the secondary heating pipe and the hot water storage tank 21 Connection, one end of the injection pump 22 is connected to the hot water storage tank 21, one end is connected to the injection well 27, and the end of the injection well 27 is connected to the spherical nozzle 23.
  • the hot water storage tank 21 is used to store the hot injection water from the condenser module.
  • the temperature of the water storage tank 21 is controlled by the temperature controller 24 according to the signal of the thermocouple 25 on the inner wall of the hot water storage tank 21.
  • the hot injection water stored in the water storage tank 21 is injected into the hydrate reservoir by the injection pump 22 through the spherical nozzle 23 at the bottom of the injection well 27.
  • the injection pump 22 controls the injection water flow according to the hydrate decomposition of the production well module to maintain hydration.
  • the spherical nozzle 23 is spherical and porous, which can disperse and uniformly inject the heat injection water into the reservoir, which is convenient for the rapid and effective transfer of the heat of the reservoir, and improves the heat compensation speed of the reservoir;
  • the production well module includes a production well 28, a seawater storage tank 29, a gas-liquid separator 30, a gas cylinder 31, a suction pump 32, a horizontal well 33, a multi-cluster production hole 35, a water delivery pump 36, a floating ball valve 34 and a water outlet pipe 37 , the bottom of the exploitation well 28 is connected to the horizontal well 33 with multiple clusters of exploitation holes 35 on the periphery, the top of the exploitation well 28 is connected to the gas-liquid separator 30, the top of the gas-liquid separator 30 is connected to the gas cylinder 31, the lower part is connected to the water outlet pipe 37, and the seawater storage The lower part of the collecting tank 29 is connected to the suction pump 32, and the middle part is connected to the inlet of the primary heating pipe by the conveying pump 36.
  • the natural gas and water produced by the decomposition of injected water and hydrate enter the production well 28 from the multi-cluster production holes 35 through the horizontal well 33, and then enter the production well 28.
  • the produced water is discharged from the water outlet pipe 37 to the seawater layer, the produced natural gas enters the gas collecting cylinder 31 from the top, and the seawater level of the seawater storage tank 29 is determined by the seawater.
  • the floating ball valve 34 inside the storage tank 29 controls the suction pump 32 at the lower part of the seawater storage tank 29.
  • the seawater storage tank 29 is connected to the absorber module through the water pump 36 to provide injection water for the absorber module.
  • Embodiment 1 the specific work flow of the natural gas hydrate efficient production system using the flue gas waste heat absorption heat pump to compensate the heat of the reservoir is combined with Fig. 1:
  • the residual heat of the flue gas is absorbed by the circulating water at the periphery of the heat exchange tube, and the temperature of the heat circulating water output by the heat absorption system 1 is controlled by adjusting the flow rate of the outflow water through the first flow regulating valve 5;
  • the hot circulating water absorbs heat in the heat absorption system 1 and then flows into the heat pump heating system 2. It first releases heat through the primary heat release pipe, and then releases heat for the second time in the secondary heat release pipe, and then returns to the heat absorption system 1 to be heated;
  • the injected water from the seawater storage tank 29 is first preheated in the absorber module, and then flows into the condenser module to absorb high-grade heat, and then is kept in the hot water storage tank 21 for backup;
  • the injection pump 22 injects the hot injection water from the hot water storage tank 21 into the injection well 27, and is dispersed and uniformly injected into the reservoir at the spherical nozzle 23 to compensate for the heat of the reservoir and ensure the hydrate decomposition rate;
  • the natural gas and water produced by the decomposition of injected water and hydrate enter the horizontal well 33 from the multi-cluster mining holes 35, and then enter the gas-liquid separator 30. Under the action of the separation plate, the produced water is discharged from the water outlet pipe 37 to the seawater layer, The produced natural gas enters the gas collecting cylinder 31 from the top.
  • Embodiment 2 the specific work flow of the natural gas hydrate efficient exploitation system utilizing the solar absorption heat pump to compensate the heat of the reservoir is combined with Fig. 1:
  • the solar energy is absorbed by the circulating water through the solar heat collector 6, and the temperature of the thermal circulating water output by the heat absorption system 1 is controlled by adjusting the flow rate of the outflowing water through the first flow regulating valve 5;
  • the hot circulating water absorbs heat in the heat absorption system 1 and then flows into the heat pump heating system 2. It first releases heat through the primary heat release pipe, and then releases heat for the second time in the secondary heat release pipe, and then returns to the heat absorption system 1 to be heated;
  • the injected water from the seawater storage tank 29 is first preheated in the absorber module, and then flows into the condenser module to absorb high-grade heat, and then is kept in the hot water storage tank 21 for backup;
  • the injection pump 22 injects the hot injection water from the hot water storage tank 21 into the injection well 27, and is dispersed and uniformly injected into the reservoir at the spherical nozzle 23 to compensate for the heat of the reservoir and ensure the hydrate decomposition rate;
  • the natural gas and water produced by the decomposition of injected water and hydrate enter the horizontal well 33 from the multi-cluster mining holes 35, and then enter the gas-liquid separator 30. Under the action of the separation plate, the produced water is discharged from the water outlet pipe 37 to the seawater layer, The produced natural gas enters the gas collecting cylinder 31 from the top.
  • Embodiment 3 The multi-injection well pattern layout method of the natural gas hydrate efficient production system using the flue gas waste heat/solar absorption heat pump to compensate the reservoir heat is illustrated with an example in conjunction with FIG. 3:
  • the injection well modules can be arranged near both ends of the distributable area as shown in Figure 3a; when the distribution of hydrate reservoirs is approximately triangular, three injection well modules can be arranged as shown in Figure 3b; When the reservoir distribution is approximately a regular quadrilateral, four injection well modules can be arranged as shown in Figure 3c.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Geochemistry & Mineralogy (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Heat-Pump Type And Storage Water Heaters (AREA)

Abstract

一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统，包括太阳能-烟气余热热源系统、吸收式热泵系统以及海底水合物开采系统三个部分，以热量补偿的方式实现了海底天然气水合物的高效开采。利用海上平台的低品位热能，解决了天然气水合物开采过程中的热源及能耗问题，为实现天然气水合物大规模开采提供了商业可行方案；该系统冷凝器模块和蒸发器模块以及注入井模块可以灵活增减，可适应多种实际水合物储层分布；注入井模块采用球型喷头（23），可将热注入水分散、均匀地注进储层内，便于储层热量快速有效传递，提高储层热量补偿速度。

Description

一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统 技术领域
本发明属于海洋油气资源开发技术领域，针对目前海洋天然气水合物开采所存在的效率问题，利用吸收式热泵技术将海上太阳能及海上发电机的烟气余热品位提高，为海洋天然气水合物的开采提供热量补偿，具体涉及一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统。
 背景技术
天然气水合物下文简称水合物，俗称可燃冰，是一种重要的清洁性能源。天然气水合物开采过程中，天然气水合物发生分解，分解是一个吸热反应，分解出的天然气产出时也要携带部分热量，因而天然气水合物分解产气过程，储层温度会降低。另外，天然气水合物分解受储层温度压力影响，在相同压力下，温度越高，分解驱动力越大，分解越快。因而，为了实现水合物持续快速分解、高效产气，则需要保证储层的温度，即要对储层进行热量补偿。目前，仍没有有效的海洋天然气水合物开采过程储层热量补偿方案。
而在海洋环境下海面平台上汽轮机排出的烟气中含有大量余热可以回收利用。同时，海洋环境下太阳能含量丰富，但品位不高且受天气影响较大，不稳定。吸收式热泵是以热能为补偿实现从低温到高温输送热量的设备，具有节约能源、保护环境的双重作用，可以将海上油田燃气透平发电机烟气余热及太阳能提高温度，用于水合物开采。
 技术问题
基于上述背景，本发明将海上油田燃气透平发电机烟气余热及海上丰富的太阳能作为吸收式热泵的低温热源，释放高品位热量，结合海洋天然气水合物开采技术，提供了一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统。
 技术解决方案
本发明的技术方案：
一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统，包括热源吸收系统1、热泵制热系统2以及储层热量补偿系统3；
所述的热源吸收系统1主要由烟气换热部分和太阳能集热部分组成；
所述的烟气换热部分包括烟气换热器4和第一流量调节阀5，被烟气换热器4内热烟气加热的循环水经过第一流量调节阀5流入热泵制热系统2；所述的第一流量调节阀5用于调节烟气换热部分进入热泵制热系统2的循环水的温度；
所述的太阳能集热部分包括第二流量调节阀7和太阳能集热器6，太阳能集热器6用于加热低温循环水，被加热的循环水经过第二流量调节阀7流入热泵制热系统2；所述的第二流量调节阀7用于调节太阳能集热部分进入热泵制热系统2的循环水的温度；
所述的热泵制热系统2主要由发生器模块、冷凝器模块、吸收器模块和蒸发器模块；
所述的发生器模块包括冷凝管9、浓溶液管10和溶液循环泵11，冷凝管9实现发生器8与冷凝器模块的连通，发生器8的喷淋器通过溶液循环泵11与吸收器模块连通，浓溶液管10实现发生器8与吸收器模块的连通，发生器8中一级放热管入口连接热源吸收系统1，出口连接蒸发器模块；
所述的吸收器模块包括吸收器12、浓溶液管10、蒸发管13、稀溶液管17、溶液循环泵11和输水泵36，蒸发管13实现吸收器12与蒸发器模块的连通，稀溶液管17连通吸收器12下部与溶液循环泵11，浓溶液管10连接吸收器12的喷淋器，吸收器12中一级加热管入口连接输水泵36，出口连接冷凝器模块；
所述的冷凝器模块包括冷凝器14、冷凝管9、冷凝水管15、U型连通器16和热水储集罐21，冷凝管9实现冷凝器14与发生器模块的连通，冷凝水管15连通冷凝器14与U型连通器16，冷凝器14中二级加热管入口连接吸收器模块，出口连接热水储集罐21；
所述的蒸发器模块包括蒸发器18、U型连通器16、冷凝水泵20、蒸发管13和循环水泵19，蒸发器18中的冷凝水喷淋器在蒸发器18内上部与U型连接器16连通，蒸发器18中二级放热管入口与吸收器模块连接，蒸发器18出口与循环水泵19连接，冷凝水泵20在蒸发器18的下方，连通蒸发器18底部出口与蒸发器18中的冷凝水喷淋器；
所述的储层热量补偿系统3主要由注入井模块和开采井模块组成；
所述的注入井模块包括热水储集罐21、注入泵22、注入井27、球型喷头23、温度控制器24、热电偶25和辅助加热器26，注入泵22一端连接热水储集罐21，另一端连接注入井27；注入井27末端连接球型喷头23，所述的热水储集罐21的温度由温度控制器24根据热水储集罐21内壁的热电偶25信号进行恒温控制，具体通过控制热水储集罐21外围的辅助加热器26的开关实现；
所述的开采井模块包括开采井28、海水储集罐29、气液分离器30、集气瓶31、吸入泵32、水平井33、多簇开采孔35、输水泵36、浮球阀34和出水管37，开采井28下方连接外围带有多簇开采孔35的水平井33，开采井28上方连接气液分离器30，气液分离器30顶部连接集气瓶31，下部连接出水管37，海水储集罐29下部连接吸入泵32，中部连接输水泵36，海水储集罐29的海水液位由海水储集罐29内部的浮球阀34控制海水储集罐29下部的吸入泵32来实现；
所述的系统运行时包括循环水流动、溶液循环流动和注入水流动；
所述的循环水在换热管7和太阳能集热器6中吸收热量后汇合，进入发生器8中一级放热管与管外的稀溶液换热，再进入蒸发器18中二级放热管中与管外的冷凝水换热，再经循环水泵19回到热源吸收系统1，分别流入换热管7和太阳能集热器6；
所述的溶液在吸收器模块、发生器模块、冷凝器模块和蒸发器模块循环，稀溶液在发生器8中与一级放热管中的循环水换热，溶液中水分变成水蒸气，剩下的溶液变成浓溶液进入吸收器12，水蒸气进入冷凝器14与二级加热管中的注入水换热变成冷凝水，冷凝水进入U型连通器16降压再进入蒸发器18与二级放热管中的循环水换热，蒸发成水蒸气进入吸收器12与浓溶液混合成为稀溶液，同时与吸收器12中一级加热管的注入水换热；
所述的注入水在海水储集罐29、吸收器12、冷凝器14和注入井27中流动，海水储集罐29中的注入水经输水泵36进入吸收器12中一级加热管中与管外的浓溶液换热，再进入冷凝器14中的二级加热管与管外的水蒸气换热，然后进入热水储集罐21保温，热水储集罐21中的热水通过注入泵22进入注入井27，并在热注入水在球型喷头23处均匀分散喷出，补偿水合物分解所需热量，注入水和水合物分解产生的天然气和水从多簇开采孔35经水平井33，进入开采井28，再进入气液分离器30，在气液分离器30中分离板的作用下，产出的水从出水管38排到海水层，产出的天然气从顶部进入集气瓶31；
所述的冷凝器模块与蒸发器模块配合注入井模块成对使用。
所述的球型喷头23为球形多孔，将热注入水分散、均匀地注进储层内，便于储层热量快速有效传递，提高储层热量补偿速度。
 有益效果
本发明的有益效果：本发明提出一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统，将吸收式热泵技术与海洋天然气水合物开采技术结合，并利用海上平台的低品位热能，解决了天然气水合物开采过程中的热源及能耗问题，为实现天然气水合物大规模开采提供了商业可行方案。
 附图说明
图1是利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统的示意图。
图2是利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统中球型喷头32示意图。
图3是利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统的多注入井模式示意图。
图中：1热源吸收系统；2热泵制热系统；3储层热量补偿系统；4烟气换热器；5第一流量调节阀；6太阳能集热器；7第二流量调节阀；8发生器；9冷凝管；10浓溶液管；11溶液循环泵；12吸收器；13蒸发管；14冷凝器；15冷凝水管；16U型连通器；17稀溶液管；18蒸发器； 19循环水泵；20冷凝水泵； 21热水储集罐；22注入泵；23球型喷头；24温度控制器；25热电偶；26辅助加热器；27注入井；28开采井；29海水储集罐；30气液分离器；31集气瓶；32吸入泵；33水平井；34浮球阀；35多簇开采孔；36输水泵；37出水管。
 本发明的实施方式
以下结合附图和具体实施例，对本发明的具体实施方式详细说明。
一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统包括热源吸收系统1、热泵制热系统2以及储层热量补偿系统3。
热源吸收系统1由烟气换热部分和太阳能集热部分组成；
烟气换热部分包括烟气换热器4和第一流量调节阀5，换热管置于烟气直接接触式换热器4内，从烟气入口进入烟气换热器4的热烟气与换热管内的低温循环水进行换热，换热后的低温烟气从烟气出口排出，被热烟气加热的循环水经过第一流量调节阀5流入热泵制热系统2；
太阳能集热部分包括第二流量调节阀7和太阳能集热器6，太阳能集热器6用于加热低温循环水，被加热的循环水经过第二流量调节阀7流入热泵制热系统2；
第一流量调节阀5和第二流量调节阀7分别调节烟气换热部分和太阳能集热部分进入热泵制热系统2的循环水的温度。
热泵制热系统2由发生器模块、冷凝器模块、吸收器模块、蒸发器模块；
发生器模块包括冷凝管9、浓溶液管10和溶液循环泵11，稀溶液喷淋器和一级放热管布置在发生器内部，冷凝管9连通发生器上部与冷凝器模块，稀溶液喷淋器置于发生器内的上部，通过溶液循环泵11与吸收器模块连通，浓溶液管1连通发生器下部与吸收器模块，与吸收器模块连通，一级放热管位于稀溶液喷淋器下方，热源吸收系统1出来的热循环水从一级放热管上方流入，在发生器内与稀溶液喷淋器均匀喷出的稀溶液换热，稀溶液中受热蒸发出的水蒸气向上流动经过冷凝管9进入冷凝器模块，蒸发后的稀溶液变成浓溶液向下流动并通过浓溶液管10进入吸收器模块中，换热后的循环水从一级放热管下方流出进入蒸发器模块中；
吸收器模块包括吸收器12、浓溶液管10、蒸发管13、稀溶液管17、溶液循环泵11和输水泵36，浓溶液喷淋器和一级加热管分别置于吸收器12内部，蒸发管13连通吸收器12上部与蒸发器模块，浓溶液喷淋器在一级加热管上方，稀溶液管17在吸收器下部，经浓溶液管10流入浓溶液喷淋器被均匀喷出的浓溶液，吸收经蒸发管13流入来自蒸发器模块的水蒸气变成稀溶液与一级加热管中来自储层热量补偿系统3的注入水换热，换热后的稀溶液通过稀溶液管17和连接发生器模块的溶液循环泵11相连接，换热后的注入水从一级加热管流出，进入冷凝器模块中；
冷凝器模块包括冷凝器14、冷凝管9、冷凝水管15、U型连通器16和热水储集罐21，二级加热管置于冷凝器14内的中部，冷凝管9连通冷凝器14上部与发生器模块，冷凝水管15连通冷凝器14下部与U型连通器16，经冷凝管9进入冷凝器14上部的水蒸气与二级加热管中来自吸收器模块的注入水换热，换热后的注入水流入热水储集罐21，水蒸气换热后形成的冷凝水由冷凝器14下部流入冷凝水管15，再流入与蒸发器模块连通的U型连通器16；
蒸发器模块包括蒸发器18、U型连通器16、冷凝水泵20、蒸发管13和循环水泵19，冷凝水喷淋器在蒸发器18内上部与U型连通器16连通，二级放热管在蒸发器18内下部，出口在蒸发器18外部与循环水泵19连接，冷凝水泵20在蒸发器18的下方，连通蒸发器18底部与冷凝水喷淋器，来自U型连通器16流入冷凝水喷淋器的冷凝水被均匀喷淋到二级放热管上方，与二级放热管中的循环水换热，换热后的循环水经循环水泵19进入热源吸收系统1，换热后的冷凝水一部分成为水蒸气进入蒸发管13，一部分以液体的形式由蒸发器18底部的冷凝水泵20送回冷凝水喷淋器；
冷凝器模块与蒸发器模块配合注入井模块成对使用。
储层热量补偿系统3主要由注入井模块、开采井模块组成；
注入井模块包括热水储集罐21、注入泵22、注入井27、球型喷头23、温度控制器24、热电偶25和辅助加热器26，二级加热管出口与热水储集罐21连接，注入泵22一端连接热水储集罐21，一端连接注入井27，注入井27末端连接球型喷头23，热水储集罐21用于储集来自冷凝器模块的热注入水，热水储集罐21的温度由温度控制器24根据热水储集罐21内壁的热电偶25信号进行恒温控制，具体是通过控制热水储集罐21外围的辅助加热器26的开关实现，热水储集罐21储集的热注入水由注入泵22通过注入井27井底的球型喷头23注入水合物储层，注入泵22根据开采井模块水合物分解情况控制注入水流量，维持水合物快速分解所需要的储层温度，球型喷头23为球形多孔，可将热注入水分散、均匀地注进储层内，便于储层热量快速有效传递，提高储层热量补偿速度；
开采井模块包括开采井28、海水储集罐29、气液分离器30、集气瓶31、吸入泵32、水平井33、多簇开采孔35、输水泵36、浮球阀34和出水管37，开采井28下方连接外围带有多簇开采孔35的水平井33，开采井28上方连接气液分离器30，气液分离器30顶部连接集气瓶31，下部连接出水管37，海水储集罐29下部连接吸入泵32，中部由输水泵36与一级加热管入口连接，注入水和水合物分解产生的天然气和水从多簇开采孔35经水平井33，进入开采井28，再进入气液分离器30，在分离板的作用下，产出的水从出水管37排到海水层，产出的天然气从顶部进入集气瓶31，海水储集罐29的海水液位由海水储集罐29内部的浮球阀34控制海水储集罐29下部的吸入泵32来实现，海水储集罐29经输水泵36与吸收器模块连接，为吸收器模块提供注入水。
实施例一，利用烟气余热吸收式热泵补偿储层热量的天然气水合物高效开采系统的具体工作流程结合图1：
烟气余热在换热管外围被循环水吸收，通过第一流量调节阀5调节流出水的流量来控制热量吸收系统1输出热循环水的温度；
热循环水在热量吸收系统1中吸热后流入热泵制热系统2中，先经过一级放热管放热，在二级放热管二次放热，再回到热量吸收系统1被加热；
来自海水储集罐29的注入水，先在吸收器模块中预热，再流入冷凝器模块吸收高品位热量，然后在热水储集罐21中保温备用；
注入泵22将热水储集罐21的热注入水注入到注入井27，在球型喷头23处分散、均匀地注进储层内，对储层进行热量补偿，保证水合物分解速率；
注入水和水合物分解产生的天然气和水从多簇开采孔35进入水平井33，再进入气液分离器30，在分离板的作用下，产出的水从出水管37排到海水层，产出的天然气从顶部进入集气瓶31。
实施例二，利用太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统的具体工作流程结合图1：
太阳能通过太阳能集热器6被循环水吸收，通过第一流量调节阀5调节流出水的流量来控制热量吸收系统1输出热循环水的温度；
热循环水在热量吸收系统1中吸热后流入热泵制热系统2中，先经过一级放热管放热，在二级放热管二次放热，再回到热量吸收系统1被加热；
来自海水储集罐29的注入水，先在吸收器模块中预热，再流入冷凝器模块吸收高品位热量，然后在热水储集罐21中保温备用；
注入泵22将热水储集罐21的热注入水注入到注入井27，在球型喷头23处分散、均匀地注进储层内，对储层进行热量补偿，保证水合物分解速率；
注入水和水合物分解产生的天然气和水从多簇开采孔35进入水平井33，再进入气液分离器30，在分离板的作用下，产出的水从出水管37排到海水层，产出的天然气从顶部进入集气瓶31。
上述两个实施例仅为利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统在单个开采井和注入井模式下的工作流程，当储层较大时，为保证开采效率，需要采用多个注入井模块，并按照水合物储层的空间分布特点进行布置，实现热量补偿的多和快。实施例三，利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统的多注入井模式布置方法举例说明结合图3：
当探测到水合物藏分布近似矩形时，可分布区域两端附近分别设置注入井模块如图3a；当水合物储层分布近似三角形时，可布置三个注入井模块如图3b；当水合物储层分布近似正四边形时，可布置四个注入井模块如图3c。
值得注意的是，上述实施例是示例而非限制本发明，依据本发明的基本原理和思路，还可以利用其他类型热源、多级热泵、多开采井、注入井布置等方式变形，本领域技术人员将能够设计出很多替代实施例而不脱离本发明保护的范围。

Claims (3)

  1. 一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统，其特征在于，该利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统包括热源吸收系统（1）、热泵制热系统（2）以及储层热量补偿系统（3）；
    所述的热源吸收系统（1）主要由烟气换热部分和太阳能集热部分组成；
    所述的烟气换热部分包括烟气换热器（4）和第一流量调节阀（5），被烟气换热器（4）内热烟气加热的循环水经过第一流量调节阀（5）流入热泵制热系统（2）；所述的第一流量调节阀（5）用于调节烟气换热部分进入热泵制热系统（2）的循环水的温度；
    所述的太阳能集热部分包括第二流量调节阀（7）和太阳能集热器（6），太阳能集热器（6）用于加热低温循环水，被加热的循环水经过第二流量调节阀（7）流入热泵制热系统（2）；所述的第二流量调节阀（7）用于调节太阳能集热部分进入热泵制热系统（2）的循环水的温度；
    所述的热泵制热系统（2）主要由发生器模块、冷凝器模块、吸收器模块和蒸发器模块；
    所述的发生器模块包括冷凝管（9）、浓溶液管（10）和溶液循环泵（11），冷凝管（9）实现发生器（8）与冷凝器模块的连通，发生器（8）的喷淋器通过溶液循环泵（11）与吸收器模块连通，浓溶液管（10）实现发生器（8）与吸收器模块的连通，发生器（8）中一级放热管入口连接热源吸收系统（1），出口连接蒸发器模块；
    所述的吸收器模块包括吸收器（12）、浓溶液管（10）、蒸发管（13）、稀溶液管（17）、溶液循环泵（11）和输水泵（36），蒸发管（13）实现吸收器（12）与蒸发器模块的连通，稀溶液管（17）连通吸收器（12）下部与溶液循环泵（11），浓溶液管（10）连接吸收器（12）的喷淋器，吸收器（12）中一级加热管入口连接输水泵（36），出口连接冷凝器模块；
    所述的冷凝器模块包括冷凝器（14）、冷凝管（9）、冷凝水管（15）、U型连通器（16）和热水储集罐（21），冷凝管（9）实现冷凝器（14）与发生器模块的连通，冷凝水管（15）连通冷凝器（14）与U型连通器（16），冷凝器（14）中二级加热管入口连接吸收器模块，出口连接热水储集罐（21）；
    所述的蒸发器模块包括蒸发器（18）、U型连通器（16）、冷凝水泵（20）、蒸发管（13）和循环水泵（19），蒸发器（18）中的冷凝水喷淋器在蒸发器（18）内上部与U型连接器（16）连通，蒸发器（18）中二级放热管入口与吸收器模块连接，蒸发器（18）出口与循环水泵（19）连接，冷凝水泵（20）在蒸发器（18）的下方，连通蒸发器（18）底部出口与蒸发器（18）中的冷凝水喷淋器；
    所述的储层热量补偿系统（3）主要由注入井模块和开采井模块组成；
    所述的注入井模块包括热水储集罐（21）、注入泵（22）、注入井（27）、球型喷头（23）、温度控制器（24）、热电偶（25）和辅助加热器（26），注入泵（22）一端连接热水储集罐（21），另一端连接注入井（27）；注入井（27）末端连接球型喷头（23），所述的热水储集罐（21）的温度由温度控制器（24）根据热水储集罐（21）内壁的热电偶（25）信号进行恒温控制，具体通过控制热水储集罐（21）外围的辅助加热器（26）的开关实现；
    所述的开采井模块包括开采井（28）、海水储集罐（29）、气液分离器（30）、集气瓶（31）、吸入泵（32）、水平井（33）、多簇开采孔（35）、输水泵（36）、浮球阀（34）和出水管（37），开采井（28）下方连接外围带有多簇开采孔（35）的水平井（33），开采井（28）上方连接气液分离器（30），气液分离器（30）顶部连接集气瓶（31），下部连接出水管（37），海水储集罐（29）下部连接吸入泵（32），中部连接输水泵（36），海水储集罐（29）的海水液位由海水储集罐（29）内部的浮球阀（34）控制海水储集罐（29）下部的吸入泵（32）来实现；
    所述的系统运行时包括循环水流动、溶液循环流动和注入水流动；
    所述的循环水在换热管（7）和太阳能集热器（6）中吸收热量后汇合，进入发生器（8）中一级放热管与管外的稀溶液换热，再进入蒸发器（18）中二级放热管中与管外的冷凝水换热，再经循环水泵（19）回到热源吸收系统（1），分别流入换热管（7）和太阳能集热器（6）；
    所述的溶液在吸收器模块、发生器模块、冷凝器模块和蒸发器模块循环，稀溶液在发生器（8）中与一级放热管中的循环水换热，溶液中水分变成水蒸气，剩下的溶液变成浓溶液进入吸收器（12），水蒸气进入冷凝器（14）与二级加热管中的注入水换热变成冷凝水，冷凝水进入U型连通器（16）降压再进入蒸发器（18）与二级放热管中的循环水换热，蒸发成水蒸气进入吸收器（12）与浓溶液混合成为稀溶液，同时与吸收器（12）中一级加热管的注入水换热；
    所述的注入水在海水储集罐（29）、吸收器（12）、冷凝器（14）和注入井（27）中流动，海水储集罐（29）中的注入水经输水泵（36）进入吸收器（12）中一级加热管中与管外的浓溶液换热，再进入冷凝器（14）中的二级加热管与管外的水蒸气换热，然后进入热水储集罐（21）保温，热水储集罐（21）中的热水通过注入泵（22）进入注入井（27），并在热注入水在球型喷头（23）处均匀分散喷出，补偿水合物分解所需热量，注入水和水合物分解产生的天然气和水从多簇开采孔（35）经水平井（33），进入开采井（28），再进入气液分离器（30），在气液分离器（30）中分离板的作用下，产出的水从出水管（38）排到海水层，产出的天然气从顶部进入集气瓶（31）。
  2. 根据权利要求1所述的一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统，其特征在于，所述的冷凝器模块与蒸发器模块配合注入井模块成对使用。
  3. 根据权利要求1所述的一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统，其特征在于，所述的球型喷头（23）为球形多孔，将热注入水分散、均匀地注进储层内，便于储层热量快速有效传递，提高储层热量补偿速度。
PCT/CN2020/111716 2020-07-17 2020-08-27 一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统 Ceased WO2022011796A1 (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/415,986 US11879310B2 (en) 2020-07-17 2020-08-27 Efficient gas hydrate production system using flue gas waste heat / solar absorption heat pump to compensate reservoir heat

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN202010694032.1A CN111852407B (zh) 2020-07-17 2020-07-17 一种基于太阳能吸收式热泵的热激法水合物开采装置
CN202010694604.6 2020-07-17
CN202010694032.1 2020-07-17
CN202010694018.1 2020-07-17
CN202010694018.1A CN111852406B (zh) 2020-07-17 2020-07-17 一种基于太阳能-烟气余热双热源热泵的热激法天然气水合物开采装置及方法
CN202010694604.6A CN111852408B (zh) 2020-07-17 2020-07-17 一种基于烟气余热吸收式热泵的热激法天然气水合物开采装置及方法

Publications (1)

Publication Number Publication Date
WO2022011796A1 true WO2022011796A1 (zh) 2022-01-20

Family

ID=79556105

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/111716 Ceased WO2022011796A1 (zh) 2020-07-17 2020-08-27 一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统

Country Status (2)

Country Link
US (1) US11879310B2 (zh)
WO (1) WO2022011796A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115355489A (zh) * 2022-07-07 2022-11-18 江苏科技大学 一种空气源热泵蒸汽发生系统及其工作方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115289523A (zh) * 2022-08-03 2022-11-04 鼎信阳光环境技术有限公司 一种低品位烟气余热回收利用系统
CN116379645A (zh) * 2023-03-31 2023-07-04 海洋石油工程股份有限公司 海上平台低品位能量回收系统
CN116678132B (zh) * 2023-04-26 2025-07-29 东南大学 一种太阳能辅助的海洋温差能制冷系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110628A (en) * 1976-10-19 1978-08-29 Texaco Development Corporation Solar sea power system
CN1690360A (zh) * 2004-04-21 2005-11-02 中国科学院过程工程研究所 一种海底天然气水合物的开采方法及系统
CN105840159A (zh) * 2016-03-24 2016-08-10 西南石油大学 一种基于太阳技术的天然气水合物开采装置及开采方法
CN106593372A (zh) * 2016-12-07 2017-04-26 大连理工大学 一种基于太阳能技术的天然气水合物开采及海水淡化方法与装置
CN108005618A (zh) * 2017-12-07 2018-05-08 华南理工大学 一种基于太阳能-海水源热泵联合供热技术的天然气水合物开采装置及方法
CN108387013A (zh) * 2018-01-09 2018-08-10 湘潭大学 天然气-地热能-太阳能耦合的多能源互补系统

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9932970B1 (en) * 2013-04-07 2018-04-03 Donald W Jeter Hybrid thermal power and desalination apparatus and methods

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4110628A (en) * 1976-10-19 1978-08-29 Texaco Development Corporation Solar sea power system
CN1690360A (zh) * 2004-04-21 2005-11-02 中国科学院过程工程研究所 一种海底天然气水合物的开采方法及系统
CN105840159A (zh) * 2016-03-24 2016-08-10 西南石油大学 一种基于太阳技术的天然气水合物开采装置及开采方法
CN106593372A (zh) * 2016-12-07 2017-04-26 大连理工大学 一种基于太阳能技术的天然气水合物开采及海水淡化方法与装置
CN108005618A (zh) * 2017-12-07 2018-05-08 华南理工大学 一种基于太阳能-海水源热泵联合供热技术的天然气水合物开采装置及方法
CN108387013A (zh) * 2018-01-09 2018-08-10 湘潭大学 天然气-地热能-太阳能耦合的多能源互补系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115355489A (zh) * 2022-07-07 2022-11-18 江苏科技大学 一种空气源热泵蒸汽发生系统及其工作方法

Also Published As

Publication number Publication date
US11879310B2 (en) 2024-01-23
US20220145731A1 (en) 2022-05-12

Similar Documents

Publication Publication Date Title
US11821637B2 (en) Energy-saving system using electric heat pump to deeply recover flue gas waste heat from heat power plant for district heating
WO2022011796A1 (zh) 一种利用烟气余热/太阳能吸收式热泵补偿储层热量的天然气水合物高效开采系统
CN112503782B (zh) 一种应用太阳能与溴化锂热泵的油田余热回收系统及方法
CN207970468U (zh) 一种mvr蒸发浓缩系统
CN102765768B (zh) 一种用热泵提高海水淡化效率的装置
CN209237374U (zh) 一种直驱型热泵蒸发浓缩系统
CN102853485B (zh) 太阳能-地源能联合驱动的沸腾式再生型溶液除湿系统
CN204691833U (zh) 一种循环水余热利用装置
CN103322727A (zh) 一种热泵系统及干燥系统以及方法
CN202902501U (zh) 太阳能－地源能联合驱动的沸腾式再生型溶液除湿系统
CN103954039B (zh) 以热泵方式回收燃气锅炉烟气冷凝热能的装置和方法
CN202869081U (zh) 一种回收余热发电系统烟气和冷却水余热的装置
CN110194497A (zh) 海水淡化装置
CN111701402A (zh) 一种二氧化碳捕集再生塔顶余热回收系统和工艺
CN107461958A (zh) 一种利用喷射式热泵回收化肥厂造气水余热系统
CN207585143U (zh) 一种太阳能辅助加热的第一类吸收式热泵
CN102538052A (zh) 一种新型喷射式换热机组
CN111911990A (zh) 一种基于溶液储能的远距离吸收式供冷供热系统
CN206837532U (zh) 氨的精馏系统
KR100472623B1 (ko) 흡수식 냉동기의 급탕용 온수 가열장치
CN108106450B (zh) 全年运行的双工况烟气处理系统
CN117005921A (zh) 一种烟气余热驱动的低温热电联产系统
CN104373310B (zh) 太阳能与燃料互补发电系统
CN211854922U (zh) 一种步进梁式加热炉汽化冷却系统
CN211635235U (zh) 一种改进型高效热源塔防冻剂浓缩再生系统

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20945381

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20945381

Country of ref document: EP

Kind code of ref document: A1