CN103322725B - Heat pump and drying system and method - Google Patents
Heat pump and drying system and method Download PDFInfo
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- CN103322725B CN103322725B CN201210074891.6A CN201210074891A CN103322725B CN 103322725 B CN103322725 B CN 103322725B CN 201210074891 A CN201210074891 A CN 201210074891A CN 103322725 B CN103322725 B CN 103322725B
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- 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
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- 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]
- Y02B30/62—Absorption based systems
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Abstract
The invention relates to a kind of heat pump and drying system and method.Described heat pump comprises absorber, evaporimeter, generator and condenser, absorption heat-exchange device is provided with in absorber, evaporating heat exchanger is provided with in evaporimeter, generation heat exchanger is provided with in generator, condensing heat exchanger is provided with in condenser, it is characterized in that the outlet of described generation heat exchanger is connected by pipeline with the entrance of described condensing heat exchanger, and drain valve and choke valve are set on this pipeline.Described drying system comprises above-mentioned heat pump and hothouse, air preheater, air heater and humid air heat exchanger.This heat pump drives heat pump cycle by utilizing the pressure differential existed between supply steam and process steam, thus realizes the heat pump temperature rise of low temperature exhaust heat, reaches the object effectively utilizing waste heat and improve energy utilization efficiency.
Description
Technical field
The present invention relates to a kind of heat pump techniques of Thermal Power Engineering Field, particularly a kind of with the pressure differential supplying steam and the process steam Novel heat pump that is driving force and drying system and method.
Background technology
Absorption heat-transformer adopts two component absorbent solutions usually, and claim low boiling component to be working medium traditionally, high boiling component is absorbent, and the two forms working medium pair, and common are with water is working medium, take lithium bromide as the water-lithium bromide working medium pair of absorbent.Absorption type heat pump system utilizes absorbent solution can separate out refrigerant vapor under certain condition, can absorb again this characteristic of refrigerant vapor in an other condition consumingly and realize refrigeration or heat supply.Existing absorption type heat pump system mainly comprises: inside establish the generator of heat exchanger, in establish the condenser of heat exchanger, in establish the evaporimeter of heat exchanger and the interior absorber establishing heat exchanger.Generator is connected by vapor passageway with condenser, and evaporimeter is connected by vapor passageway with absorber.Absorbent solution is circulated between generator and absorber by absorbent solution pipeline.
Common heating system generally adopts steam boiler or is provided the supply steam of higher temperature and pressure by steam power plant to user, and general supply steam is temperature 180-220 DEG C, the high-grade thermal source of pressure 0.9-1.3MPa., the process steam in actual applications needed for user does not often need so high pressure and temperature.Such as conventional drying system, usually only needs saturation temperature 100-140 DEG C, the steam of pressure 0.1-0.4MPa can realize the drying of material, especially high unfavorable on the contrary for some heat sensitive material baking temperatures.Therefore, as shown in Figure 4, existing drying system adopts choke valve 60 to carry out cooling decompression to produce process steam required in process steam pipeline 42 to the supply steam that supply jet chimney 40 provides usually.Like this, steam original high-energy grade just being wasted in vain is supplied.On the other hand, the waste heat that technique is discharged also is difficult to be recycled because grade is too low.
Summary of the invention
The object of the present invention is to provide a kind of new heat pump and heat pump cycle method, technical problem to be solved utilizes the pressure differential existed between supply steam and process steam as driving force, and the grade realizing low grade residual heat promotes or refrigeration.
The object of the invention is to also provide a kind of drying system and drying means, technical problem to be solved utilizes the pressure differential existed between supply steam and process steam as driving force, reclaim and improve the grade of drying process institute exhaust heat, and it can be used as the preheating thermal source of drying medium to recycle, thus realize the significantly improvement of drying process energy utilization efficiency.
The object of the invention to solve the technical problems realizes by the following technical solutions.According to a kind of heat pump that the present invention proposes, comprise absorber, evaporimeter, generator and condenser, absorption heat-exchange device is provided with in absorber, evaporating heat exchanger is provided with in evaporimeter, generation heat exchanger is provided with in generator, condensing heat exchanger is provided with in condenser, solution circulation pipeline is provided with between described absorber and generator, circulate between absorber and generator for making absorbent solution, connecting pipe is provided with between described evaporimeter and condenser, for the condensed water in condenser is imported evaporimeter, the entrance of described generation heat exchanger is connected with the pipeline of supply steam, the outlet that heat exchanger occurs is connected by pipeline with the entrance of described condensing heat exchanger, and drain valve is set on this pipeline, the outlet of described condensing heat exchanger is connected with the pipeline of process steam.The effect of described drain valve ensures all condensations in generation heat exchanger of supply steam.
Preferably, aforesaid heat pump, the pipeline between described drain valve and described condensing heat exchanger entrance is also provided with choke valve.The effect of described choke valve is the pressure be decompressed to by the condensed water of high pressure needed for process steam.
Preferably, aforesaid heat pump, also be provided with steam jet heat pump, the Working-fluid intaking of described steam jet heat pump is connected with the pipeline of supply steam, the driving fluid entrance of steam jet heat pump is connected with the outlet of described condensing heat exchanger, and the compressed fluid outlet of steam jet heat pump is connected with the pipeline of process steam.The effect of described steam jet heat pump is the pressure improving the steam produced in condensing heat exchanger further.
Preferably, aforesaid heat pump, described solution circulation pipeline is provided with solution heat exchanger, for carrying out heat exchange to the absorbent solution of the high temperature exported from generator with the absorbent solution of the low temperature exported from absorber.
According to a kind of heat pump cycle method that the present invention proposes, it adopts above-mentioned heat pump, the method comprises the following steps: (1) utilizes supply Steam Heating absorbent solution in generator, produce refrigerant vapor concentrated absorbent solution simultaneously, and above-mentioned refrigerant vapor is incorporated into condenser, described concentrated after absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in absorber; (2) refrigerant vapor of the above-mentioned generator generation of condensation within the condenser, and condensed water is delivered in evaporimeter; (3) above-mentioned in evaporimeter condensate evaporation is refrigerant vapor, and is incorporated in absorber by produced steam; (4) in absorber, absorbent solution absorbs the refrigerant vapor of flash-pot and produces and absorb heat, and absorbent solution is diluted, after described dilution absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in generator; (5) supply steam condensation in generation heat exchanger and form high pressure condensed water, this high pressure condensed water enters condensing heat exchanger after the pressure being decompressed to process steam, and accepting the condensation heat of refrigerant vapor in condenser and formation process steam at condensing heat exchanger, this process steam is outwards exported by process steam pipeline.
According to the another kind of heat pump cycle method that the present invention proposes, it adopts above-mentioned heat pump, the method comprises the following steps: supply steam is divided into two parts by (1), part supply steam Transportation is to generator, this supply Steam Heating absorbent solution in generator, produce refrigerant vapor concentrated absorbent solution simultaneously, and above-mentioned refrigerant vapor is incorporated into condenser, described concentrated after absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in absorber; (2) refrigerant vapor of the above-mentioned generator generation of condensation within the condenser, and condensed water is delivered in evaporimeter; (3) above-mentioned in evaporimeter condensate evaporation is refrigerant vapor, and is incorporated in absorber by produced refrigerant vapor; (4) in absorber, absorbent solution absorbs the refrigerant vapor of flash-pot and produces and absorb heat, and absorbent solution is diluted, after described dilution absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in generator; (5) the supply steam condensation in generation heat exchanger being transported to generator forms high pressure condensed water, this high pressure condensed water enters condensing heat exchanger after the pressure being decompressed to process steam, and accept the condensation heat of refrigerant vapor in condenser at condensing heat exchanger and form condenser vapor, this condenser vapor is transported to the driving fluid entrance of steam jet heat pump by connecting pipe; (6) another part supply steam Transportation is to the Working-fluid intaking of steam jet heat pump, this supply steam formation process steam together with described condenser vapor in steam jet heat pump, is exported by the compressed fluid of steam jet heat pump and is outwards exported by process steam pipeline.
Preferably, aforesaid heat pump cycle method, carries out heat exchange by the solution heat exchanger arranged to the absorbent solution exported from generator and the absorbent solution exported from absorber.
According to a kind of drying system that the present invention proposes, it comprises above-mentioned heat pump, also comprise hothouse, air preheater, air heater and humid air heat exchanger, this air preheater is connected with the absorption heat-exchange device in heat pump and forms loop, this humid air heat exchanger is connected with the evaporating heat exchanger in heat pump and forms loop, and this air heater is connected with the process steam pipeline in heat pump.
According to a kind of drying means that the present invention proposes, it adopts above-mentioned drying system, and the method comprises: carry out preheated air with the heat energy that the absorption heat-exchange device in heat pump provides; The air that the process steam provided with condensing heat exchanger in heat pump heats through preheating forms hot-air; In the drying chamber, hot-air forms humid air after contacting with dried material; Described humid air provides heat energy to evaporating heat exchanger.
The present invention compared with prior art has following significantly advantage and beneficial effect:
Heat pump of the present invention and heat pump cycle method are by adopting novel absorption heat pump cycle, and then organically combined absorption heat pump and steam jet heat pump, to supply the pressure differential that exists between steam and process steam for driving force, complete low grade residual heat grade promote or refrigeration, achieve by its absorption heat-exchange device to user's heat supply or by its evaporating heat exchanger to user's cooling or cold and heat combined supply.This heat pump is exported by condensing heat exchanger and exports process steam, the supply steam of heat exchanger is there is close to being input in it in quantity and heat content, thus in fact consumption supplies steam and is only effectively make use of the steam pressure drop be originally wasted, so, this heat pump provide that the operating cost of heat or cold is extremely low and economic benefit is splendid.
Drying system of the present invention and drying means, then that to supply the pressure differential existed between steam and drying process steam be driving force, with the waste heat of drying process institute hydrofuge air for low-temperature heat source, the heat energy that heat pump absorption heat-exchange device exports is used for preheating of air, thus significantly can reduces the energy consumption of drying system.This drying system due to input heat pump driving force and low-temperature heat source be all free, therefore economic benefit is splendid.Drying medium of the present invention is air, also can be other fluids such as nitrogen or water.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to better understand technological means of the present invention, and can be implemented according to the content of description, coordinates accompanying drawing to be described in detail as follows below with preferred embodiment of the present invention.
Accompanying drawing explanation
Fig. 1 is the flow chart of the heat pump of the embodiment of the present invention 1.
Fig. 2 is the flow chart of the heat pump of the embodiment of the present invention 2.
Fig. 3 is the flow chart of the drying system of the embodiment of the present invention 3.
Fig. 4 is the flow chart of existing drying system.
Detailed description of the invention
In order to further set forth the present invention for the technological means reaching predetermined goal of the invention and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to its detailed description of the invention of heat pump proposed according to the present invention, structure, feature and effect thereof, be described in detail as follows.
Referring to shown in Fig. 1, is the flow chart of the heat pump of the embodiment of the present invention 1.The heat pump that the present embodiment proposes is made up of absorber 10, evaporimeter 11, generator 20, condenser 21 and supply jet chimney 40.Be provided with in generator 20 and heat exchanger 25 occurs, in condenser 21, be provided with condensing heat exchanger 26.
Described absorber 10 is communicated with by the first path 12 with evaporimeter 11.Absorbent solution is provided with in described absorber 10.Absorption heat-exchange device 15 is provided with in described absorber, heat-carrying agent is had in this absorption heat-exchange device 15, the high temperature produced in absorber 10 absorbs the heat-carrying agent in heat heating absorption heat-exchange device, this heat-carrying agent is heated up, thus forms the high-grade heat energy provided to user.
Working medium is provided with in described evaporimeter 11.In this evaporimeter 11, be also provided with evaporating heat exchanger 16, outside low temperature heat source makes working medium be evaporated to refrigerant vapor by this evaporating heat exchanger 16.This refrigerant vapor is entered in absorber 10 by the first path 12, thus absorb by the absorbent solution of the high concentration in absorber 10, and discharge high temperature absorption heat, described absorbent solution is diluted.Thus, described outside low temperature heat source is converted into described high-grade heat energy and provides to user, and meanwhile, evaporating heat exchanger 16 can realize providing cold to user.This evaporimeter is also provided with evaporimeter spray piping for the liquid refrigerant of base of evaporator is transported to top, thus the working medium in evaporimeter is circulated, and improves heat exchange efficiency.
Described generator 20, is inside provided with absorbent solution and heat exchanger 25 occurs.The HTHP provided by supply jet chimney 40 supplies steam and provide condensation heat and driving heat source there is condensation in heat exchanger 25 to generator 20 under the effect of steam trap 27, thus heating absorbent solution wherein, make it produce refrigerant vapor, the concentration of simultaneously stability solution is improved.
Described condenser 21, is inside provided with working medium and condensing heat exchanger 26.Described generator 20 is communicated with by alternate path 22 with condenser 21.The refrigerant vapor produced in generator 20 is entered in condenser 21 by alternate path 22.The outlet of described generation heat exchanger 25 is connected by pipeline with described condensing heat exchanger 26, and on this pipeline, arrange steam trap 27 and choke valve 28, and the effect of steam trap 27 is block steam and drain waters.The high pressure condensed water occurring to produce in heat exchanger 25 is via steam trap 27, condensing heat exchanger 26 is entered be decompressed to the pressure of process steam under the effect of choke valve 28 after, and accept the condensation heat of refrigerant vapor in condenser 21 and formation process steam at condensing heat exchanger 26, and export from process steam pipeline 42.
Being provided with solution circulation pipeline between described absorber 10 and generator 20, circulating between absorber 10 and generator 20 for making absorbent solution.The solution that partially absorbs in absorber 10 is transported in generator 20, and the solution that partially absorbs in generator 20 is transported in absorber 10.Because the absorbent solution in absorber 10 is for absorbing refrigerant vapor, the absorbent solution in generator is for generation of refrigerant vapor, so the concentration of absorbent solution that the concentration of absorbent solution that generator 20 exports exports higher than absorber 10.That is, the regenerative process of absorbent solution in absorber has been carried out by generator 20.For absorbing refrigerant vapor better, in absorber 10, be provided with sprinkling equipment 13, for spraying the absorbent solution of the high concentration from generator.For better producing refrigerant vapor, in generator 20, be provided with sprinkling equipment 23, for spraying the absorbent solution of the low concentration from absorber.
Connecting pipe 29 is provided with, for working medium is imported to evaporimeter 11 from condenser 21 between described evaporimeter 11 and condenser 21.For better producing refrigerant vapor, in evaporimeter 11, be provided with sprinkling equipment 14, for spraying the working medium of condenser.
Because absorber 10 is different with the operating temperature of generator 20, absorber needs lower temperature, and generator needs higher temperature, so the present embodiment arranges solution heat exchanger 36 on solution circulation pipeline, for carrying out heat exchange to the absorbent solution of the high temperature exported from generator with the absorbent solution of the low temperature exported from absorber.Valve 30 can also be set on solution circulation pipeline, for controlling flow and the flow velocity of absorbent solution.
In addition, also on evaporimeter spray piping and solution circulation pipeline and be provided with delivery pump 33 and delivery pump 34 respectively.
Adopt above-mentioned heat pump, the heat pump cycle method that the present invention proposes, it comprises the following steps: the supply Steam Heating absorbent solution that (1) utilizes supply jet chimney 40 to provide in generator 20, produce refrigerant vapor concentrated absorbent solution simultaneously, and produced refrigerant vapor is incorporated into condenser 21, described concentrated rear absorbent solution is partly exported in absorber 10 by solution circulation pipeline; (2) refrigerant vapor that the above-mentioned generator 20 of condensation produces in condenser 21, and condensed water is delivered in evaporimeter 11; (3) above-mentioned in evaporimeter 11 condensate evaporation is refrigerant vapor, and is incorporated in absorber 10 by produced steam; (4) in absorber, absorbent solution absorbs the refrigerant vapor of flash-pot and produces absorption heat, absorbent solution is diluted, and the solution circulation Cemented filling that after described dilution, absorbent solution is passed through to arrange between absorber 10 and generator 20 is in generator 20; (5) supply steam condensation in generation heat exchanger 25 and form high pressure condensed water, this high pressure condensed water enters condensing heat exchanger 26 after steam trap 27 and choke valve 28 are decompressed to the pressure of process steam, and accepting the condensation heat of refrigerant vapor in condenser 21 and formation process steam at condensing heat exchanger 26, this process steam is outwards exported by process steam pipeline 42.
Preferably, by solution heat exchanger 36, heat exchange is carried out to the absorbent solution exported from generator 20 and the absorbent solution exported from absorber 10.
Referring to shown in Fig. 2, is the flow chart of the heat pump of the embodiment of the present invention 2.In order to promote the pressure and temperature of institute's production. art steam further, be also provided with steam jet heat pump 45.Driving fluid entrance and the condensing heat exchanger of described steam jet heat pump 45 export 41 and are connected, the Working-fluid intaking of steam jet heat pump 45 is connected with supply jet chimney 40, and the compressed fluid outlet of steam jet heat pump 45 is connected with process steam pipeline 42.To supply the high pressure of steam for drive source, under the effect of steam jet heat pump 45, the pressure and temperature of process steam is further improved.
Adopt above-mentioned heat pump, the another kind of heat pump cycle method that the present invention proposes, it comprises the following steps: supply steam is divided into two parts by (1), part supply steam Transportation is to generator 20, the supply Steam Heating absorbent solution that supply jet chimney 40 provides is utilized in generator 20, produce refrigerant vapor concentrated absorbent solution simultaneously, and produced refrigerant vapor is incorporated into condenser 21, described concentrated rear absorbent solution is partly exported in absorber 10 by solution circulation pipeline; (2) refrigerant vapor that the above-mentioned generator 20 of condensation produces in condenser 21, and condensed water is delivered in evaporimeter 11; (3) above-mentioned in evaporimeter 11 condensate evaporation is water vapour, and is incorporated in absorber 10 by produced steam; (4) in absorber, absorbent solution absorbs the refrigerant vapor of flash-pot and produces absorption heat, absorbent solution is diluted, and the solution circulation Cemented filling that after described dilution, absorbent solution is passed through to arrange between absorber 10 and generator 20 is in generator 20; (5) the supply steam condensation in generation heat exchanger 25 being transported to generator 20 forms high pressure condensed water, this high pressure condensed water enters condensing heat exchanger 26 after steam trap 27 and choke valve 28 are decompressed to the pressure of process steam, and accept the condensation heat of refrigerant vapor in condenser 21 at condensing heat exchanger 26 and form condenser vapor, this condenser vapor is transported to the driving fluid entrance of steam jet heat pump 45 by connecting pipe 41; (6) another part supply steam Transportation is to the Working-fluid intaking of steam jet heat pump 45, this supply steam formation process steam together with described condenser vapor in steam jet heat pump 45, is exported by the compressed fluid of steam jet heat pump and is outwards exported by process steam pipeline 42.
Referring to shown in Fig. 3, is the flow chart of the drying system that the present invention proposes.The drying system of the present embodiment comprises the heat pump of above-described embodiment 2, hothouse 50, air heater 51, air preheater 52 and humid air heat exchanger 53.Described hothouse 50 and air heater 51 are air dryer systems of the prior art.Described air preheater 52 is arranged on and provides on the pipeline of air to air heater, its role is to carry out preheating to air, thus can reduce the energy resource consumption of air heater.This air preheater 52 is connected with the absorption heat-exchange device 15 in heat pump and forms loop, thus makes the heat produced in absorber 10 for carrying out preheating to the drying medium of drying system.Described air heater 51 is connected with the process steam pipeline 42 in heat pump, thus makes the heat of process steam for heating the drying medium of drying system.The humid air of discharging from hothouse 50 has larger humidity and vapour latent heat, and humid air heat exchanger 53 is arranged on hothouse and discharges on the pipeline of humid air.This humid air heat exchanger 53 is connected with evaporating heat exchanger 16 and forms loop, thus the heat content of the humid air that hothouse can be made to discharge is recycled utilization as the low-temperature heat source of evaporating heat exchanger 16.Like this, the absorption heat-exchange device heat that above-mentioned drying system utilizes heat pump to export and process steam heat carry out two-step heating to drying medium, thus significantly reduce supply steam consumption, energy utilization efficiency thus be improved significantly.
Adopt above-mentioned drying system, the present invention also proposes a kind of drying means, and the method comprises: carry out preheated air with the heat energy that the absorption heat-exchange device 15 in heat pump provides by air preheater 52; The air that the process steam provided with condensing heat exchanger in heat pump 26 is heated through preheating by air heater 51 forms hot-air; In hothouse 50, hot-air forms humid air after contacting with dried material; Described humid air provides heat energy by humid air heat exchanger 53 to evaporating heat exchanger 16.
In the above-described embodiments, only describe the basic procedure of technical solution of the present invention, other parts or equipment realizing this flow process have been omitted, such as, ensure each pump needed for material flow direction or valve, the working medium of absorbent solution and absorbent.For other equipment required for the power circulation system realized described in each embodiment above-mentioned or part, those skilled in the art all can find corresponding technological means in the prior art, do not repeat them here.
The above, it is only preferred embodiment of the present invention, not any pro forma restriction is done to the present invention, although the present invention discloses as above with preferred embodiment, but and be not used to limit the present invention, any those skilled in the art, do not departing within the scope of technical solution of the present invention, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be the content not departing from technical solution of the present invention, according to any simple modification that technical spirit of the present invention is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (8)
1. a heat pump, comprise absorber, evaporimeter, generator and condenser, absorption heat-exchange device is provided with in absorber, evaporating heat exchanger is provided with in evaporimeter, generation heat exchanger is provided with in generator, condensing heat exchanger is provided with in condenser, solution circulation pipeline is provided with between described absorber and generator, circulate between absorber and generator for making absorbent solution, connecting pipe is provided with between described evaporimeter and condenser, for the condensed water in condenser is imported evaporimeter, it is characterized in that the entrance of described generation heat exchanger is connected with the pipeline of supply steam, the outlet that heat exchanger occurs is connected by pipeline with the entrance of described condensing heat exchanger, and drain valve is set on this pipeline, the outlet of described condensing heat exchanger is connected with the pipeline of process steam.
2. heat pump according to claim 1, is characterized in that, the pipeline between described drain valve and described condensing heat exchanger entrance is also provided with choke valve.
3. heat pump according to claim 1, is characterized in that, described solution circulation pipeline is provided with solution heat exchanger, for carrying out heat exchange to the absorbent solution of the high temperature exported from generator with the absorbent solution of the low temperature exported from absorber.
4. the heat pump according to any one of claim 1-3, it is characterized in that also being provided with steam jet heat pump, the Working-fluid intaking of described steam jet heat pump is connected with the pipeline of supply steam, the driving fluid entrance of steam jet heat pump is connected with the outlet of described condensing heat exchanger, and the compressed fluid outlet of steam jet heat pump is connected with the pipeline of process steam.
5. a drying system, it is characterized in that it comprises the heat pump described in any one of claim 1-4, also comprise hothouse, air preheater, air heater and humid air heat exchanger, this air preheater is connected with the absorption heat-exchange device in heat pump and forms loop, this humid air heat exchanger is connected with the evaporating heat exchanger in heat pump and forms loop, and this air heater is connected with the process steam pipeline in heat pump.
6. a heat pump cycle method, it adopts the heat pump described in any one of claim 1-2, and the method comprises the following steps:
(1) in generator, Steam Heating absorbent solution is supplied, produce refrigerant vapor concentrated absorbent solution simultaneously, and above-mentioned refrigerant vapor is incorporated into condenser, described concentrated after absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in absorber;
(2) refrigerant vapor of the above-mentioned generator generation of condensation within the condenser, and condensed water is delivered in evaporimeter;
(3) above-mentioned in evaporimeter condensate evaporation is refrigerant vapor, and is incorporated in absorber by produced refrigerant vapor;
(4) in absorber, absorbent solution absorbs the refrigerant vapor of flash-pot and produces and absorb heat, and absorbent solution is diluted, after described dilution absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in generator;
(5) supply steam condensation in generation heat exchanger and form high pressure condensed water, this high pressure condensed water enters condensing heat exchanger after the pressure being decompressed to process steam, and accepting the condensation heat of refrigerant vapor in condenser and formation process steam at condensing heat exchanger, this process steam is outwards exported by process steam pipeline.
7. a heat pump cycle method, it adopts heat pump according to claim 4, and the method comprises the following steps:
(1) supply steam is divided into two parts, part supply steam Transportation is to generator, this supply Steam Heating absorbent solution in generator, produce refrigerant vapor concentrated absorbent solution simultaneously, and above-mentioned refrigerant vapor is incorporated into condenser, described concentrated after absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in absorber;
(2) refrigerant vapor of the above-mentioned generator generation of condensation within the condenser, and condensed water is delivered in evaporimeter;
(3) above-mentioned in evaporimeter condensate evaporation is refrigerant vapor, and is incorporated in absorber by produced refrigerant vapor;
(4) in absorber, absorbent solution absorbs the refrigerant vapor of flash-pot and produces and absorb heat, and absorbent solution is diluted, after described dilution absorbent solution by the solution circulation Cemented filling that arranges between absorber and generator in generator;
(5) the supply steam condensation in generation heat exchanger being transported to generator forms high pressure condensed water, this high pressure condensed water enters condensing heat exchanger after the pressure being decompressed to process steam, and accept the condensation heat of refrigerant vapor in condenser at condensing heat exchanger and form condenser vapor, this condenser vapor is transported to the driving fluid entrance of steam jet heat pump by connecting pipe;
(6) another part supply steam Transportation is to the Working-fluid intaking of steam jet heat pump, this supply steam formation process steam together with described condenser vapor in steam jet heat pump, is exported by the compressed fluid of steam jet heat pump and is outwards exported by process steam pipeline.
8. a drying means, it adopts drying system according to claim 5, and the method comprises:
Preheated air is carried out with the heat energy that the absorption heat-exchange device in heat pump provides;
The air that the process steam provided with condensing heat exchanger in heat pump heats through preheating forms hot-air;
In the drying chamber, hot-air forms humid air after contacting with dried material;
Described humid air provides heat energy to evaporating heat exchanger.
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| WO2018091049A1 (en) * | 2016-11-18 | 2018-05-24 | Gea Process Engineering A/S | Drying system with improved energy efficiency and capacity control |
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| JP2678211B2 (en) * | 1988-02-12 | 1997-11-17 | 株式会社日立製作所 | Heat storage type cold / heat generator |
| JPH02146475A (en) * | 1988-11-29 | 1990-06-05 | Tomohiro Nomura | Dryer |
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| CN101033897A (en) * | 2007-04-19 | 2007-09-12 | 北京科技大学 | System and method for transforming low temperature residual heat into steam |
| CN101344298A (en) * | 2007-11-15 | 2009-01-14 | 上海海事大学 | Air conditioner and sea water desalination combined operation system |
| CN101344342A (en) * | 2008-04-21 | 2009-01-14 | 上海海事大学 | Film distillation backheating absorption type refrigerator |
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