CN109798583A - A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat - Google Patents

A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat Download PDF

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Publication number
CN109798583A
CN109798583A CN201910106468.1A CN201910106468A CN109798583A CN 109798583 A CN109798583 A CN 109798583A CN 201910106468 A CN201910106468 A CN 201910106468A CN 109798583 A CN109798583 A CN 109798583A
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China
Prior art keywords
heat
generator
flue gas
pump
heater
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Pending
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CN201910106468.1A
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Chinese (zh)
Inventor
陈荣敏
张钧泰
张国柱
张晓明
邱寅晨
刘忠秋
王进仕
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China Datang Power Group Corp
China Datang Corp Ltd
Datang Environment Industry Group Co Ltd
Datang Beijing Energy Management Co Ltd
Original Assignee
China Datang Power Group Corp
Datang Environment Industry Group Co Ltd
Datang Beijing Energy Management Co Ltd
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Priority to CN201811304554 priority Critical
Priority to CN2018113045545 priority
Application filed by China Datang Power Group Corp, Datang Environment Industry Group Co Ltd, Datang Beijing Energy Management Co Ltd filed Critical China Datang Power Group Corp
Publication of CN109798583A publication Critical patent/CN109798583A/en
Pending legal-status Critical Current

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Abstract

A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat, including absorber, generator, condenser and heat supply network circuit;Absorber is circumscribed with turbine discharge pipeline;The liquid outlet and generator pipeline connection of absorber;Setting primary heater, secondary heater and condenser in the generator;Generator liquid outlet and absorber pipeline connection;The absorber is also circumscribed with heat supply network pipeline, and heat supply network pipeline exports after sequentially passing through the condenser in absorber and generator;Primary heater access driving steam in generator is as heat source;Secondary heater in generator is using boiler smoke as heat source;It fully utilizes residual heat from boiler fume and steam turbine exhaust heat and for heat supply, improves the heat capacity of unit, the open system in addition used makes that heat pump system is greatly simplified, reduces system investments.

Description

A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat
Technical field
The invention belongs to residual heat of electric power plant to recycle energy-saving field, and in particular to a kind of heat for comprehensively utilizing flue gas and exhaust steam residual heat Heat pump heating system.
Background technique
The most important thermal loss of fired power generating unit occurs in cold end and boiler exhaust gas.Fired power generating unit energy benefit is improved at present It is also carried out mainly around these two aspects with the behave of efficiency.Using the behave of boiler exhaust gas waste heat generally include low-level (stack-gas) economizer, The heat of recycling is used further in therrmodynamic system by steam air heater etc., for reducing unit coal consumption;And reduce the behave of cold end loss then It mainly improves exhaust steam heat and samples external heat supply etc..In the northern area of China, urbanization fast development makes some areas heat supply Scarce capacity improves the heat capacity of unit in addition to there are also preferable social benefits with preferable economic benefit.
The waste heat of fired power generating unit cold end is lower due to sampling, and can not directly utilize, generally use the upgrading pair of the methods of heat pump Outer heat supply and then utilization.Absorption heat pump using extracted steam from turbine as driving heat source, make by the heat of Turbine Cold Junction recirculated water For low-temperature heat source, utilized by the upgrading that the heating to hot net water realizes cold end low grade residual heat.Due to current absorption type heat The limitation of coolant-temperature gage is pumped out, usually its water outlet, which needs to lead to peak load calorifier heating again, can be only achieved the requirement of supply water temperature, and The heat source of peak load calorifier is also steam turbine heat supply steam extraction, therefore for part of generating units, may since extracted steam from turbine is insufficient and It can not enough recycling cold end waste heats.And the flue-gas temperature after boiler air preheater can be used as absorption usually at 130 DEG C or so The driving heat source of heat pump, but the partial heat is again smaller compared to cold end waste heat, it also can not enough recycling cold end waste heats.It is existing Boiler exhaust gas heat recovery and reduction cold end loss are designed using autonomous system in technology, system structure is complicated, phase Mutually between lack fusion and coordinated operation ability, cannot rationally high efficiente callback utilize waste heat.
Summary of the invention
The present invention proposes a kind of absorption heat pump heat supply system for comprehensively utilizing residual heat from boiler fume and steam turbine exhaust heat System.By after boiler air preheater flue gas and extracted steam from turbine comprehensive utilization, all as the driving heat source of absorption heat pump, as far as possible Cold end waste heat is recycled, to increase unit heating load as far as possible.
A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat, including absorber, generator, condenser and Heat supply network circuit;It is characterized in that, absorber is circumscribed with turbine discharge pipeline;The liquid outlet and generator pipeline of absorber connect It is logical;Setting primary heater, secondary heater and condenser in the generator, primary heater, secondary heater are to hair Solution heating in raw device;Generator liquid outlet and absorber pipeline connection;The absorber is also circumscribed with heat supply network pipeline, Heat supply network pipeline exports after sequentially passing through the condenser in absorber and generator;Primary heater access driving in generator is steamed Vapour is as heat source;Secondary heater in generator is using boiler smoke as heat source.
The invention comprehensively utilizes residual heat from boiler fume and steam turbine exhaust heat and it is used for heat supply, improves the confession of unit Thermal energy power, the open system in addition used make heat pump system it is greatly simplified, reduce system investments.
The present invention improves the scope of application of heat pump system, can increase unit heating load by recovery waste heat as far as possible;
Heat pump system of the invention directly absorbs low-temperature steam exhaust, eliminates the evaporator link in conventional heat pump system, subtracts Heat pump system investment and operating cost are lacked.
Detailed description of the invention
Fig. 1 is a kind of absorption type heat pump heat distribution system schematic diagram for comprehensively utilizing fume afterheat and exhausted spare heat;
Absorber 1, generator 2, condenser 3, liquid knockout 4, desalination device 5, vacuum pump 6, solution pump 7, solution heat exchanger 8, peak load calorifier 9
Specific embodiment
1 the invention will be further described with reference to the accompanying drawing, it should be understood that content described herein is merely to illustrate It is of the invention with explaining, it is not intended to limit the present invention.
It is a kind of comprehensive utilization residual heat from boiler fume and steam turbine exhaust heat absorption type heat pump heat distribution system by absorber 1, generator 2, condenser 3, liquid knockout 4, desalination device 5, vacuum pump 6, solution pump 7, solution heat exchanger 8 and peak load calorifier 9 Deng composition, as shown in Figure 1;
Absorber 1 is circumscribed with turbine discharge pipeline, and turbine discharge is directly entered absorber 1;The gas of absorber 1 goes out Mouth is connected with the incondensable gas pipeline for being provided with vacuum pump 6, and the liquid outlet of absorber 1 successively passes through on weak solution pipeline Solution pump 7 and solution heat exchanger 8 be connected to the interior generator 2 equipped with condenser 3;Setting heating in the generator 2 Device, heater heat the solution in generator 2;The concentrated solution formed after heated pipeline heating in generator 2 is through sending out Raw device outlet is connected with another entrance of solution heat exchanger 8, and is passed through in absorber 1 after solution heat exchanger 8;It is described Absorber 1 be also circumscribed with heat supply network pipeline, heat supply network pipeline exports after sequentially passing through the condenser 3 in absorber 1 and generator 2, The liquid outlet of condenser 3 is connected with hydrophobic steam condensation water lines are exported, and is provided with desalination in steam condensation water lines Device 5.
Wherein, the liquid knockout 4 for the drop being separated and recovered from steam is provided in generator 2, liquid knockout 4 is located at generator In 2 between lithium-bromide solution liquid level and condenser 3.
Heater in generator 2 is divided into two parts: a part of heat source comes from extracted steam from turbine, part heating Device is connected with the driving steam from extracted steam from turbine, after heating pipeline is to the solution heating in generator using heating pipeline Output termination driving steam drainage pipeline;The steam extraction of steam turbine is for the heat supply in generator.The steam extraction tracheae of steam turbine is arranged Part in generator is the shapes such as snakelike or annular.
The heat source of another part comes from boiler smoke, and several realizations can be used using boiler smoke as heat source Form.
The first, it is directly heated using flue gas tube bank.Flue gas in boiler directly passes through the heat-transfer surface-cigarette arranged in generator Tube bank, flue gas flow through in smoke pipe beam, and the solution working medium in generator flows through on the outside of smoke pipe beam, obtain the heat of flue gas outflow And it evaporates.
The second, it is heated using heat pipe as heat exchanger.Heat pipe is applied in absorption heat pump, it will using heat pipe Flue gas and absorption heat pump isolation, avoid flue gas from being passed directly into heat pump Pollution Cycle working medium, avoid flue gas corrosion heat pump, increase The service life of absorption heat pump.
Described heat pipe one end is located in the generator of absorption heat pump, and the other end is set in the flue of boiler, in boiler Flue gas provides cooling to heat pipe by heat source of the heat pipe as absorption heat pump generator, the solution working medium of absorption heat pump.It is low Warm flue gas from air preheater come out after in flue with gravity type heat pipe evaporator section carry out heat exchange, gravity type heat pipe evaporator section Working medium absorb flue gas heat evaporate into gravity type heat pipe condensation segment, in heat pump generator circulation solution absorb gravity type heat The heat of vaporization that working medium condensation is released in pipework condensation section;
Gravity type heat pipe is divided into gravity type heat pipe evaporator section and gravity type condensation segment, gravity type heat pipe evaporator section by partition The outer heat exchange area for installing fin additional and increasing flue gas and heat pipe of pipe, is placed in flue;Gravity type condensation segment is placed in heat pump generator, Circulation solution and gravity type heat pipe condensation segment directly contact in heat pump generator, and circulation solution absorbs in gravity type heat pipe condensation segment It is evaporated after the heat that working medium condensation is released.
Third, using gas-water direct contact heat-exchanging and utilize absorption heat pump Mist heat recovering, flue gas is from bottom to top Achieve the purpose that cooling with recirculated water heat exchange during flowing.Recirculated water passes through after stack base aggregation later with flue gas heat exchange Enter absorption heat pump after crossing water treatment device.
Using the system of absorption heat pump Mist heat recovering by flue, absorption heat pump generator, spray equipment, water quality Processing unit and water circulating pump composition.Spray equipment is horizontally placed at the top of flue, the injection direction of the nozzle of spray equipment with The angle of flue longitudinal direction is adjustable, and adjusting range is 0 °~180 °.Flue is material filling type structure, and filling filler is to increase circulation water mist Change effect, reinforces the contact heat-exchanging process of flue gas and recirculated water.The circulating water outlet on flue chassis and water treatment device into Mouth connection, the outlet of water treatment device and the import of water circulating pump connect, and the outlet of water circulating pump and absorption heat pump occur The hot water side-entrance of device connects, and the import of the hot water side outlet and spray equipment of absorption heat pump generator connects.
The flue gas that boiler emission goes out enters stack base from smoke inlet, by with after circulation water direct contact heat-exchanging from cigarette Exhanst gas outlet at the top of road leaves, in cigarette after flue gas heat exchange of the recirculated water by spray equipment formation atomized drop and from bottom to top Enter water treatment device after the chassis aggregation in road, carried out in water treatment device after contaminant filter and pH value are adjusted by Water circulating pump enters the heating pipeline being arranged in absorption heat pump generator.Recirculated water enters heating pipeline release heat in generator Flue is again introduced into through spray equipment after amount to exchange heat with flue gas.
Heating pipeline is provided with bypass line in heat pump generator.The outlet and the side-entrance of generator hot water of water circulating pump with One end of bypass line connects, and the import of generator hot water side outlet and spray equipment and the other end of bypass line connect, and follows Ring water is divided into two-way after water treatment device, enters the generator in absorption heat pump all the way, and another way passes through bypass Pipeline directly sprays in flue through spray equipment, directly returns to flue and continues to exchange heat.Control valve is provided on bypass line, The controllable circulating water flow into generator.
Further, integrated apparatus can be realized by spraying flue gas waste heat recovery and denitration, further include storage alkali device, storage in system Alkali device is by adding alkali pipeline to be connected with spray equipment, and setting adds alkali pump and adds alkali neutralization Measurement and Control System, according to shower water PH value (pH value) be automatically added to suitable lye with keep shower water be appropriateness alkalinity, prevent shower water absorb flue gas in Acidic materials etching system equipment at acid water, and reach the condensed water of spraying cooling in flue gas after flue gas desulfurization and denitrification Discharge standard.
The flue gas waste heat recovery system has the function of denitration, can either be by the recycling of the latent heat of water in flue gas, while can Denitration process is carried out to flue gas, not only increases combustion gas utilization efficiency in this way, while reducing the amount of nitrogen oxides in flue gas.
System Working Principle is as follows:
Turbine discharge is directly entered absorber 1, is brominated the absorption of lithium concentrated solution;
Hot net water passes sequentially through absorber 1, condenser 3, peak load calorifier 9, and wherein the heat source of peak load calorifier 9 is Heat supply steam extraction;
Vacuum pump 6 is set on absorber 1, liquid knockout 4 is set in generator 2, the setting of condenser vapor condensate line removes Salt device 5;
It is hydrophobic into steam condenser of steam turbine set or oxygen-eliminating device after desalination in desalination device 5, start new circulation;And it removes down Salt be sent into absorber 1.
Steam turbine low-temperature steam exhaust is passed through absorber 1, low-temperature steam exhaust is in absorber 1 by the dense bromination of mass concentration 20-40% Lithium solution directly absorbs, and the hot net water that the heat that absorption process generates is through the heat supply network pipeline of absorber 1 absorbs, hot net water quilt It heats, the incondensable gas in low-temperature steam exhaust enters incondensable gas pipeline by the gas vent of absorber 1;Dense lithium bromide is molten Liquid becomes dilute lithium-bromide solution after absorbing low-temperature steam exhaust, then from the liquid outlet of absorber 1 by molten on weak solution pipeline Liquid pump 7 pressurizes, and then exchanges heat in solution heat exchanger 8, dilute lithium-bromide solution is preheated, and enters hair along weak solution pipeline Raw device 2.2 heaters are provided in generator 2, the heat source of one of heater is boiler smoke, another heater Heat source is extracted steam from turbine,
These dilute lithium-bromide solutions being preheated are heated again in generator, and dilute lithium-bromide solution releases steam, are steamed Drop in vapour is installed in the collection of the liquid knockout 4 in generator 2;The steam that generator 2 generates is in condenser 3 and from absorption The hot net water in heat supply network pipeline come out in device 1 carries out heat exchange, and the hot net water for being absorbed the heating of device 1 is further occurred The steam heating that device 2 generates, then enters heat supply network outward supplying heat along heat supply network pipeline.Condenser 3 export hot net water will also again into Enter peak load calorifier and feeding heat supply network is heated by heat supply steam extraction.
The steam that generator 2 generates is entered by the liquid outlet of condenser 3 equipped with desalination device 6 by heat supply network water condensation Steam condensation water lines supply water outward;At this point, dilute lithium-bromide solution in generator 2 becomes dense due to having evaporated partial moisture Lithium-bromide solution, these dense lithium-bromide solutions carry out heat through dilute lithium-bromide solution in solution heat exchanger 8 and weak solution pipeline Cooling after heat is released in exchange, into absorber 1, forms heat pump cycle.
To enter generator 2 dilute lithium-bromide solution preheat in advance, i.e., in solution heat exchanger 4 with return absorber 1 Dense lithium-bromide solution carry out heat exchange, first is that enable dilute lithium-bromide solution enter generator 2 when more readily driven Dynamic steam heating, releases steam, second is that the waste heat in system is adequately utilized, rationally utilizes waste heat, reduce operation at This.
In addition, hot net water also obtains dense lithium bromide other than absorbing the heat of steam in condenser 3 from absorber 1 The heat that is released when solution absorbs low-temperature steam exhaust, reasonable utilization dense lithium-bromide solution are discharged when absorbing low-temperature steam exhaust Heat out carries out heat exchange with steam in condenser 3 convenient for hot net water.
Since incondensable gas may be contained in turbine discharge, vacuum pump 6 is set on absorber 1 to guarantee system Vacuum degree;In view of the water vapour that generator 2 generates may carry some lithium-bromide solution drops, to reduce lithium-bromide solution Liquid knockout 4 is arranged in generator 2 to be separated and recovered from the drop in water vapour in loss.
In order to which the hydrophobic quality of the steam condensation for forming condenser 3 meets industrial requirement, in the hydrophobic pipeline Provided with desalination device 5.Hydrophobic entrance steam condenser of steam turbine set or oxygen-eliminating device in desalination device 5 after desalination, start new circulation, And the salt under removing is sent into absorber 1.
Waste heat recycling heating system of the present invention is compared with conventional absorption heat pump absorbs the external heating system of cold end waste heat, originally The absorption type heat pump heat distribution system of comprehensive utilization residual heat from boiler fume and steam turbine exhaust heat that invention proposes, is on the one hand improved The scope of application of heat pump system can increase unit heating load by recovery waste heat as far as possible;On the other hand evaporator is eliminated, simplified System, reduces investment, improves system performance, reduce operating cost;Flue gas waste heat recovery is integrated with denitration realization Device improves system performance, reduces operating cost.
Finally, it should be noted that being not intended to restrict the invention the foregoing is merely explanation of the invention, although to this hair It is bright to be described in detail, it for those skilled in the art, still can be to aforementioned documented technical solution It modifies or equivalent replacement of some of the technical features.All within the spirits and principles of the present invention, made Any modification, equivalent substitution, improvement and etc. should all be included in the protection scope of the present invention.

Claims (10)

1. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat, including absorber, generator, condenser and heat Net circuit;It is characterized in that, absorber is circumscribed with turbine discharge pipeline;The liquid outlet and generator pipeline of absorber connect It is logical;Setting primary heater, secondary heater and condenser in the generator, primary heater, secondary heater are to hair Solution heating in raw device;Generator liquid outlet and absorber pipeline connection;The absorber is also circumscribed with heat supply network pipeline, Heat supply network pipeline exports after sequentially passing through the condenser in absorber and generator;Primary heater access driving in generator is steamed Vapour is as heat source;Secondary heater in generator is using boiler smoke as heat source.
2. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 1, which is characterized in that It further include peak load calorifier, heat supply network pipeline exports after sequentially passing through absorber, condenser and peak load calorifier in generator, vapour Turbine steam extraction connects peak load calorifier shell-side.
3. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 1, which is characterized in that Condenser is set in generator, and condenser vapor condensate line is connected on condenser;First heating of generator bottom Device heater outlet connection driving steam drainage pipeline, driving steam drainage pipeline converge with condenser vapor condensate line, By desalination device by hydrophobic feeding steam condenser of steam turbine set or oxygen-eliminating device.
4. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 1, which is characterized in that For primary heater using heating pipeline, the heating pipeline being arranged in generator is snakelike or annular.
5. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 1, which is characterized in that Secondary heater is directly heated using flue gas tube bank;Flue gas is by the heat-transfer surface-smoke pipe beam arranged in generator, and flue gas is in smoke pipe It is flowed through in beam, the solution working medium in generator flows through on the outside of smoke pipe beam.
6. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 1, which is characterized in that Secondary heater is heated using heat pipe as heat exchanger;Described heat pipe one end is located in the generator of absorption heat pump, The other end is set in the flue of boiler, and the flue gas in boiler is absorption by heat source of the heat pipe as absorption heat pump generator The solution working medium of heat pump provides cooling to heat pipe.
7. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 6, which is characterized in that Secondary heater uses gravity type heat pipe;Gravity type heat pipe is divided into gravity type heat pipe evaporator section by partition and gravity type condenses Section, gravity type heat pipe evaporator section pipe install fin additional outside, are placed in flue;Gravity type condensation segment is placed in heat pump generator, heat pump Circulation solution and gravity type heat pipe condensation segment directly contact in generator.
8. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 1, which is characterized in that The heat source of secondary heater uses gas-water direct contact heat-exchanging, and utilizes absorption heat pump Mist heat recovering;Utilize absorption The system of formula heat pump Mist heat recovering is by secondary heater, spray equipment, water treatment in flue, absorption heat pump generator Device and water circulating pump composition;Spray equipment is horizontally placed at the top of flue;The circulating water outlet on flue chassis and water treatment The import of device connects, and the outlet of water treatment device and the import of water circulating pump connect, the outlet of water circulating pump with it is absorption The hot water side-entrance of secondary heater connects in heat pump generator, and the hot water side of secondary heater goes out in absorption heat pump generator Mouth is connect with the import of spray equipment.
9. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 8, which is characterized in that Secondary heater is provided with bypass line in heat pump generator.The outlet and the side-entrance of generator hot water of water circulating pump and bypass pipe The one end on road connects, and the import of generator hot water side outlet and spray equipment and the other end of bypass line connect, recirculated water warp It is divided into two-way after crossing water treatment device, enters the generator in absorption heat pump all the way, another way is straight by bypass line It connects and is sprayed in flue through spray equipment, directly return to flue and continue to exchange heat;Control valve is provided on bypass line, control into Enter the circulating water flow in generator.
10. a kind of heat pump heat distribution system for comprehensively utilizing flue gas and exhaust steam residual heat according to claim 8, feature exist In, further include in the system using absorption heat pump Mist heat recovering storage alkali device, storage alkali device by add alkali pipeline and spray fill Set it is connected, be provided with plus alkali pump and plus alkali neutralization Measurement and Control System, suitable alkali is automatically added to according to the pH value of shower water Liquid is the alkalinity of appropriateness to keep shower water.
CN201910106468.1A 2018-11-04 2019-02-02 A kind of heat pump heat distribution system comprehensively utilizing flue gas and exhaust steam residual heat Pending CN109798583A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748873A (en) * 2019-10-08 2020-02-04 河南理工大学 Exhaust steam heat regeneration system of power plant
CN110822763A (en) * 2019-11-05 2020-02-21 石河子大学 Power plant waste heat recovery system capable of achieving double-effect operation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805689A (en) * 1986-05-29 1989-02-21 Aisin Seiki Kabushiki Kaisha Outdoor unit for a heat pump
CN202092207U (en) * 2011-04-29 2011-12-28 清华大学 Central heating system recovering waste heat of smoke through absorbing type heat pump
CN104162357A (en) * 2014-08-13 2014-11-26 北京源深节能技术有限责任公司 Integrated spray flue gas waste heat recovery and denitration device
CN104390388A (en) * 2014-11-14 2015-03-04 西安交通大学 Steam type spraying-dead steam direct absorption type compound heat pump system
CN204718176U (en) * 2015-06-10 2015-10-21 田均成 Utilize the absorption system of residual heat from boiler fume

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4805689A (en) * 1986-05-29 1989-02-21 Aisin Seiki Kabushiki Kaisha Outdoor unit for a heat pump
CN202092207U (en) * 2011-04-29 2011-12-28 清华大学 Central heating system recovering waste heat of smoke through absorbing type heat pump
CN104162357A (en) * 2014-08-13 2014-11-26 北京源深节能技术有限责任公司 Integrated spray flue gas waste heat recovery and denitration device
CN104390388A (en) * 2014-11-14 2015-03-04 西安交通大学 Steam type spraying-dead steam direct absorption type compound heat pump system
CN204718176U (en) * 2015-06-10 2015-10-21 田均成 Utilize the absorption system of residual heat from boiler fume

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110748873A (en) * 2019-10-08 2020-02-04 河南理工大学 Exhaust steam heat regeneration system of power plant
CN110748873B (en) * 2019-10-08 2021-04-16 河南理工大学 Exhaust steam heat regeneration system of power plant
CN110822763A (en) * 2019-11-05 2020-02-21 石河子大学 Power plant waste heat recovery system capable of achieving double-effect operation

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