CN111392791A - Multi-effect distillation seawater desalination system combined with heat pump - Google Patents
Multi-effect distillation seawater desalination system combined with heat pump Download PDFInfo
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- CN111392791A CN111392791A CN202010256772.7A CN202010256772A CN111392791A CN 111392791 A CN111392791 A CN 111392791A CN 202010256772 A CN202010256772 A CN 202010256772A CN 111392791 A CN111392791 A CN 111392791A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
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Abstract
The invention discloses a multi-effect distillation seawater desalination system combined with a heat pump, which comprises an absorption heat pump, an evaporator, a condenser and a heat exchanger, the heat carried by the strong brine and the steam discharged by the evaporator is recovered through the heat exchanger and the condenser, the temperature of the raw material seawater of the evaporator is sequentially raised, and the steam condensate water/steam is used as a heating heat source of the evaporator and a low-temperature heat source of the absorption heat pump, the raw material seawater is heated for a plurality of times, the temperature of the raw material seawater entering the evaporator is improved, the operating cost of seawater desalination is reduced, meanwhile, the heat of the exhaust heat of the waste heat boiler and the steam turbine or the industrial waste heat recovered by the absorption heat pump is used as a high-temperature heat source, a low-temperature heat source and a heating heat source of the evaporator, so that the temperature discharge is reduced, the operation cost of seawater desalination is reduced, and the system is not only suitable for a low-temperature multi-effect seawater desalination system, but also suitable for brackish water and other multi-effect distilled seawater desalination systems.
Description
The technical field is as follows:
the invention relates to the field of power plant heat energy management, in particular to a multi-effect distillation seawater desalination system combined with a heat pump.
Background art:
the low-temperature multi-effect distillation (L T-MED) has high fresh water yield, low corrosion candleability at low temperature, good system heat economy performance and the like, so the low-temperature multi-effect seawater desalination system is widely applied.
The absorption heat pump is a circulating system which utilizes a low-grade heat source to pump heat from a low-temperature heat source to a high-temperature heat source, is an effective device for recycling low-temperature heat energy, and has double functions of saving energy and protecting the environment. The absorption heat pump mainly comprises four parts, namely a generator, a condenser, an absorber and an evaporator. The generator can be driven by steam or hot water to transfer a low-temperature heat source to a medium-temperature heat source, and is better energy-saving equipment. By using the absorption heat pump to replace a steam jet compressor, various heat sources in the multi-effect distilled seawater desalination system can be integrated, the energy consumption of the multi-effect distilled seawater desalination device is further reduced, and the heat economy is improved.
The invention content is as follows:
the technical problem to be solved by the invention is as follows: the defects in the prior art are overcome, the heat carried by the strong brine and the steam discharged by the evaporator is recovered, the raw material seawater temperature of the evaporator is sequentially increased and is used as a heating heat source of the evaporator, and meanwhile, the heat of a waste heat boiler, steam extraction of a steam turbine or industrial waste heat is recovered by an absorption heat pump to replace a steam jet compressor, so that the seawater desalination operation cost is reduced.
The technical scheme of the invention is as follows: a multi-effect distillation seawater desalination system combined with a heat pump comprises an absorption heat pump, an evaporator, a condenser and a heat exchanger, and is characterized in that: the heat exchanger heats the entering raw material seawater, then discharges the raw material seawater into the condenser for further heating, the heated raw material seawater is introduced into the medium-temperature heat source inlet of the absorption heat pump, and is discharged into the evaporator from the medium-temperature heat source outlet after being taken as the medium-temperature heat source of the absorption heat pump for heat absorption, distillation operation is carried out under the heating effect of the internal heating heat source, steam and strong brine generated by the evaporator respectively enter the condenser and the heat exchanger for step-by-step heating of the raw material seawater entering in sequence, the heating heat source in the evaporator enters the low-temperature heat source inlet of the absorption heat pump from the heating heat source outlet and is discharged from the low-temperature heat source outlet after being taken as the low-temperature heat source of the absorption heat pump for heat release.
Further, the number of the absorption heat pumps and the number of the evaporators are at least two.
Furthermore, steam generated by the evaporators enters an adjacent evaporator to be used as a heating source and/or enters a condenser to heat the entering raw seawater, and strong brine generated by the evaporators directly enters the adjacent evaporator to be used as raw seawater and/or enters a heat exchanger to heat the entering raw seawater.
Furthermore, a heating heat source inlet communicated with an internal heating heat source is arranged on the evaporator, and the heating heat source inlet is communicated with a steam outlet on the adjacent evaporator and/or communicated with a high-temperature heat source outlet on the absorption heat pump.
Furthermore, a high-temperature heat source on the absorption heat pump is provided by a waste heat boiler, a steam turbine or industrial waste heat, and is connected with a high-temperature heat source inlet through a pipeline.
Furthermore, a high-temperature heat source on the absorption heat pump is connected with a heating heat source inlet and/or a high-temperature heat source inlet on the adjacent absorption heat pump through a high-temperature heat source outlet.
Further, be provided with the strong brine outlet that discharges the strong brine that the evaporimeter produced on the evaporimeter and/or carry out the strong brine water inlet that receives to the strong brine that adjacent evaporimeter discharged, be provided with the confession on the heat exchanger strong brine gets into and the strong brine import and the strong brine mouth of draining of discharge.
Furthermore, the steam entering the condenser releases heat to the entering raw material seawater and then condenses the raw material seawater into qualified fresh water or serves as a low-temperature heat source of the absorption heat pump.
And further, the heat enters a low-temperature heat source inlet of the absorption heat pump from a heating heat source outlet, and is discharged from the low-temperature heat source outlet to become qualified fresh water after being used as a low-temperature heat source of the absorption heat pump for heat release.
Further, the absorption heat pump is a single-effect absorption heat pump or a multi-effect absorption heat pump.
The invention has the beneficial effects that:
the method comprises the steps of recovering strong brine discharged by an evaporator and heat carried by the steam, sequentially increasing the temperature of raw seawater of the evaporator, taking the steam as a heating heat source of the evaporator and a low-temperature heat source of an absorption heat pump, heating the raw seawater for multiple times, increasing the temperature of the raw seawater entering the evaporator, and reducing the operation cost of seawater desalination.
Description of the drawings:
fig. 1 is a schematic structural diagram of an embodiment of the present application.
Fig. 2 is a schematic structural diagram of another embodiment of the present application.
The specific implementation mode is as follows:
example (b): see fig. 1 and 2;
in fig. 1: 1-absorption heat pump, 4-evaporator, 7-condenser, 8-heat exchanger, 9-high temperature heat source inlet, 10-high temperature heat source outlet, 11-heating heat source inlet, 12-heating heat source outlet, 13-low temperature heat source inlet, 14-low temperature heat source outlet, 15-strong brine outlet, 16-medium temperature heat source inlet, 17-medium temperature heat source outlet, 18-steam outlet, 25-raw material seawater inlet, 26-condenser inlet, 27-condenser outlet, 28-condenser, 29-strong brine inlet, 30-strong brine outlet;
in fig. 2: 1-first-stage absorption heat pump, 2-second-stage absorption heat pump, 3-third-stage absorption heat pump, 4-first-effect evaporator, 5-second-effect evaporator, 6-third-effect evaporator, 7-condenser, 8-heat exchanger, 9-first-stage high-temperature heat source inlet, 10-first-stage high-temperature heat source outlet, 11-first-effect heating heat source inlet, 12-first-effect heating heat source outlet, 13-first-stage low-temperature heat source inlet, 14-first-stage low-temperature heat source outlet, 15-first-effect strong brine outlet, 16-first-stage medium-temperature heat source inlet, 17-first-stage medium-temperature heat source outlet, 18-first-effect steam outlet, 19-second-stage high-temperature heat source inlet, 20-second-stage high-temperature heat source outlet, 21-second-stage medium-temperature heat source inlet, 22-second-stage medium-temperature heat source outlet, 23-second-effect heating heat source, 26-condenser inlet, 27-condenser outlet, 28-condenser, 29-strong brine inlet and 30-strong brine outlet.
A multi-effect distillation seawater desalination system combined with a heat pump comprises an absorption heat pump, an evaporator, a condenser and a heat exchanger, wherein heat carried by concentrated brine and steam discharged from the evaporator is recovered through the heat exchanger and the condenser, the temperature of raw seawater of the evaporator is sequentially raised, steam condensate water/steam is used as a heating heat source of the evaporator and a low-temperature heat source of the absorption heat pump to heat the raw seawater for multiple times, the temperature of the raw seawater entering the evaporator is raised, the operation cost of seawater desalination is reduced, and meanwhile, heat of a waste heat boiler, a steam turbine or industrial waste heat recovered by the absorption heat pump is used as a heating heat source of the high-temperature heat source, the low-temperature heat source and the evaporator, so that the temperature discharge is reduced, and the operation cost of seawater desalination is reduced.
The present application is described in detail below with reference to the drawings and examples.
Example one (see fig. 1):
the heat exchanger 8 heats the raw material seawater entering from the raw material seawater inlet 25, the raw material seawater is discharged from the condenser inlet 26 to the condenser for further heating, the heated raw material seawater enters the intermediate temperature heat source inlet 16 of the absorption heat pump 1 from the condenser outlet 27, the raw material seawater is taken as the intermediate temperature heat source of the absorption heat pump 1 for heat absorption and then is discharged into the evaporator 4 from the intermediate temperature heat source outlet 17, the distillation operation is carried out under the heating effect of the internal heating heat source, the steam and the concentrated brine generated by the evaporator 4 respectively enter the condenser 28 and the heat exchanger 8 from the steam outlet 18 and the concentrated brine outlet 15 for stepwise heating the raw material seawater entering in sequence, the evaporator 4 is provided with a heating heat source inlet 11 communicated with the internal heating source, the heating heat source inlet 11 is communicated with the high temperature heat source outlet 10 on the absorption heat pump 1, the heating source in the evaporator 4 enters the low temperature heat source inlet 13 of the absorption heat pump 1 from the heating source outlet 12, the heat is released as the low-temperature heat source of the absorption heat pump 1 and then discharged from the low-temperature heat source outlet 14.
The high-temperature heat source on the absorption heat pump 1 is provided by a waste heat boiler, a steam turbine or industrial waste heat, and is connected with the absorption heat pump 1 through a high-temperature heat source inlet 9.
The evaporator 4 is provided with a strong brine outlet 15 for discharging strong brine generated by the evaporator 4, and the heat exchanger 8 is provided with a strong brine inlet 29 and a strong brine outlet 30 for allowing the strong brine to enter and discharge.
The steam entering the condenser 7 releases heat and condenses the entering raw material seawater, and then is discharged from the steam condensate outlet 28 to become qualified fresh water or be used as a low-temperature heat source of the absorption heat pump.
In this embodiment, the circulation formed by the evaporator 4, the heat exchanger 8, the condenser 7, the medium temperature heat source inlet 16, and the medium temperature heat source outlet 17 continuously and circularly heats the cooling seawater to raise the temperature of the raw seawater flowing into the evaporator 4; the high-temperature heat source inlet 9, the high-temperature heat source outlet 10, the heating heat source inlet 11, the heating heat source outlet 12, the low-temperature heat source inlet 13 and the low-temperature heat source outlet 13 are communicated with each other, the high-temperature heat source on the absorption heat pump 1 is formed in such a way that exhaust heat of a waste heat boiler and a steam turbine is exhausted or industrial waste heat enters the absorption heat pump from the high-temperature heat source inlet 9 and is used as the high-temperature heat source to drive the absorption heat pump generator, the high-temperature heat source enters the evaporator 4 to heat raw material seawater through the high-temperature heat source outlet 10 and the heating heat source inlet 11 after being condensed and cooled, the raw material seawater is cooled in the evaporator 4 and then is discharged from the heating heat source outlet 12, the.
Example two (see fig. 2):
the heat exchanger 8 heats the raw material seawater entering from the raw material seawater inlet 25, discharges the raw material seawater from the condenser inlet 26 to the condenser for further heating, the heated raw material seawater enters the medium temperature heat source inlets (the first-stage medium temperature heat source inlet 16, the second-stage medium temperature heat source inlet 21 and the third-stage medium temperature heat source inlet) of the absorption heat pumps (the first-stage absorption heat pump 1, the second-stage absorption heat pump 2 and the third-stage absorption heat pump 3) from the condenser outlet 27, wherein valves are arranged at the second-stage medium temperature heat source inlet 21 and the third-stage medium temperature heat source inlet, and discharges the raw material seawater serving as the medium temperature heat source of the absorption heat pumps after absorbing heat from the medium temperature heat source outlets (the first-stage medium temperature heat source outlet 17, the second-stage medium temperature heat source outlet 22 and the third-stage medium temperature heat source outlet) to the evaporators (the first-effect evaporator 4, the second, the evaporators (4, 5, 6) are provided with a heating heat source inlet and a heating heat source outlet which are communicated with the internal heating heat source.
The steam generated by the evaporators (4, 5, 6) enters the adjacent evaporators (4, 5, 6) as a heating source and/or enters the condenser 7 to heat the entering raw seawater, and the strong brine generated by the evaporators (4, 5, 6) directly enters the adjacent evaporators (4, 5, 6) as the raw seawater and/or enters the heat exchanger 8 to heat the entering raw seawater.
The inlet of the heating heat source is communicated with the steam outlet on the adjacent evaporator (4, 5, 6) and/or communicated with the high-temperature heat source outlet on the absorption heat pump (1, 2, 3).
The high-temperature heat source on the absorption heat pump (1, 2, 3) is provided by a waste heat boiler, a steam turbine for steam extraction or industrial waste heat, and the high-temperature heat source and the steam turbine are connected with each other through a pipeline and a high-temperature heat source inlet. The high-temperature heat source inlet is communicated with the adjacent high-temperature heat source outlet.
The evaporators (4, 5 and 6) are provided with a strong brine outlet for discharging strong brine generated by the evaporators (4, 5 and 6) and/or a strong brine inlet for receiving strong brine discharged by an adjacent evaporator, and the heat exchanger 8 is provided with a strong brine inlet 29 and a strong brine outlet 30 for allowing the strong brine to enter and be discharged.
The steam entering the condenser 7 releases heat to the entering raw material seawater and then condenses into qualified fresh water or serves as a low-temperature heat source of the absorption heat pump.
The heat source enters the low-temperature heat source inlet of the absorption heat pump from the heating heat source outlet, and is discharged from the low-temperature heat source outlet to become qualified fresh water after being used as the low-temperature heat source of the absorption heat pump for heat release.
In the embodiment, steam is extracted by a steam turbine, steam of a waste heat boiler or industrial waste heat enters a primary absorption heat pump 1 to serve as a primary high-temperature heat source to drive an absorption heat pump generator, and after condensation and temperature reduction, the steam enters a primary evaporator 4 from a primary high-temperature heat source outlet 10 and a primary heating heat source inlet 11 to heat raw material seawater, a primary heating heat source in the primary evaporator 4 is cooled by the primary evaporator 4 and then is discharged from a primary heating heat source outlet 12, and the steam enters the primary absorption heat pump 1 from a primary low-temperature heat source inlet 13 to serve as a primary low-temperature heat source, and after further temperature reduction, the steam is discharged from a primary low-temperature heat source outlet; the primary absorption heat pump 1 extracts a primary low-temperature heat source through a primary high-temperature heat source and transfers heat to a primary medium-temperature heat source raw material seawater, the raw material seawater enters the primary absorption heat pump 1 from a primary medium-temperature heat source inlet 16 to absorb heat and raise temperature, then enters the primary evaporator 4 from a primary medium-temperature heat source outlet 17 to be distilled, and steam generated by distillation enters the secondary evaporator 5 from a primary steam outlet 18 to serve as a secondary heating heat source; steam extracted by a steam turbine and steam or industrial waste heat of a waste heat boiler enter a secondary absorption heat pump 2 from a secondary high-temperature heat source inlet 19 to serve as a secondary high-temperature heat source driving absorption heat pump generator, the steam or the industrial waste heat can be used as a high-temperature driving heat source of a tertiary absorption heat pump 3 or used as condensate water to return to a boiler after being condensed and cooled, a secondary heating heat source of a secondary evaporator 5 is sent into the secondary absorption heat pump 2 from a secondary heating heat source outlet 23 and a secondary low-temperature heat source inlet after being cooled and is discharged as qualified fresh water from a secondary low-temperature heat source 24 after being cooled by a secondary low-temperature heat source, and the steam generated by the secondary evaporator 5 enters a three-effect evaporator 6 to complete the same; the steam generated by the triple-effect evaporator 6 enters the condenser 7 for condensation, and the steam condensate water 28 can be used as a low-temperature heat source of the absorption heat pump or can release heat to the raw material seawater to become qualified fresh water.
Strong brine generated by the first-effect evaporator 4 is discharged to the second-effect evaporator 5 from the first-effect strong brine water outlet 15 and the second-effect strong brine water inlet, strong brine generated by the second-effect evaporator 5 is discharged to the third-effect evaporator 6 from the second-effect strong brine water outlet and the third-effect strong brine water inlet, strong brine generated by the third-effect evaporator 6 is sent to the heat exchanger 8 from the strong brine water outlet and the strong brine inlet 29, heat is transferred to raw seawater and then is discharged from the strong brine discharge outlet 30; raw material seawater enters a heat exchanger 8 from a raw material seawater inlet 25, the raw material seawater is discharged into a condenser from a condenser inlet 26 after the heat exchanger 8 absorbs heat of concentrated brine for further heating, the heated raw material seawater enters a medium temperature heat source inlet (a first-stage medium temperature heat source inlet 16, a second-stage medium temperature heat source inlet 21 and a third-stage medium temperature heat source inlet) of an absorption heat pump (a first-stage absorption heat pump 1, a second-stage absorption heat pump 2 and a third-stage absorption heat pump 3) from a condenser outlet 27, wherein valves are arranged at the second-stage medium temperature heat source inlet 21 and the third-stage medium temperature heat source inlet, and the raw material seawater serving as a medium temperature heat source of the absorption heat pump absorbs heat and is discharged into an evaporator (a first-effect evaporator 4, a second-effect evaporator 5 and a third-effect evaporator 6) from a medium temperature heat source outlet (.
The absorption heat pump is a single-effect absorption heat pump or a multiple-effect absorption heat pump, and if the multiple-effect absorption heat pump is adopted, one multiple-effect absorption heat pump can be matched with one or more seawater desalination evaporators (for example, one double-effect absorption heat pump can be matched with one or two seawater desalination evaporators).
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and all simple modifications, equivalent variations and modifications made to the above embodiment according to the technical spirit of the present invention still fall within the scope of the technical solution of the present invention.
Claims (10)
1. A multi-effect distillation seawater desalination system combined with a heat pump comprises an absorption heat pump, an evaporator, a condenser and a heat exchanger, and is characterized in that: the heat exchanger heats the entering raw material seawater, then discharges the raw material seawater into the condenser for further heating, the heated raw material seawater is introduced into the medium-temperature heat source inlet of the absorption heat pump, and is discharged into the evaporator from the medium-temperature heat source outlet after being taken as the medium-temperature heat source of the absorption heat pump for heat absorption, distillation operation is carried out under the heating effect of the internal heating heat source, steam and strong brine generated by the evaporator respectively enter the condenser and the heat exchanger for step-by-step heating of the raw material seawater entering in sequence, the heating heat source in the evaporator enters the low-temperature heat source inlet of the absorption heat pump from the heating heat source outlet and is discharged from the low-temperature heat source outlet after being taken as the low-temperature heat source of the absorption heat pump for heat release.
2. The multi-effect distillation seawater desalination system combined with a heat pump of claim 1, which is characterized in that: the number of the absorption heat pumps and the number of the evaporators are at least two.
3. The multi-effect distillation seawater desalination system combined with a heat pump of claim 2, which is characterized in that: the steam generated by the evaporator enters an adjacent evaporator to be used as a heating source and/or enters a condenser to heat the entering raw seawater, and the strong brine generated by the evaporator directly enters the adjacent evaporator to be used as raw seawater and/or enters a heat exchanger to heat the entering raw seawater.
4. The multi-effect distillation seawater desalination system combined with a heat pump of claim 2, which is characterized in that: the evaporator is provided with a heating heat source inlet communicated with an internal heating heat source, and the heating heat source inlet is communicated with a steam outlet on an adjacent evaporator and/or communicated with a high-temperature heat source outlet on the absorption heat pump.
5. The multi-effect distillation seawater desalination system in combination with a heat pump of any one of claims 1-4, wherein: the high-temperature heat source on the absorption heat pump is provided by a waste heat boiler, a steam turbine or industrial waste heat, and is connected with the high-temperature heat source inlet through a pipeline.
6. The multi-effect distillation seawater desalination system combined with a heat pump of claim 5, which is characterized in that: and the high-temperature heat source on the absorption heat pump is connected with the heating heat source inlet and/or the high-temperature heat source inlet on the adjacent absorption heat pump through the high-temperature heat source outlet.
7. The multi-effect distillation seawater desalination system in combination with a heat pump of any one of claims 1-6, wherein: be provided with the strong brine outlet that discharges the strong brine that the evaporimeter produced on the evaporimeter and/or carry out the strong brine water inlet that receives to the strong brine that adjacent evaporimeter discharged, be provided with the confession on the heat exchanger strong brine gets into and the strong brine import and the strong brine mouth of discharging.
8. The multi-effect distillation seawater desalination system in combination with a heat pump of any one of claims 1-7, wherein: and the steam entering the condenser releases heat to the entering raw material seawater and condenses the raw material seawater into qualified fresh water or serves as a low-temperature heat source of the absorption heat pump.
9. A multi-effect distillation seawater desalination system in combination with a heat pump as claimed in any one of claims 2-8, wherein: the heat source enters the low-temperature heat source inlet of the absorption heat pump from the heating heat source outlet, and is discharged from the low-temperature heat source outlet to become qualified fresh water after being used as the low-temperature heat source of the absorption heat pump for heat release.
10. A multi-effect distillation seawater desalination system in combination with a heat pump as claimed in any one of claims 1 to 9, wherein: the absorption heat pump is a single-effect absorption heat pump or a multi-effect absorption heat pump.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072114A (en) * | 2021-05-08 | 2021-07-06 | 西安热工研究院有限公司 | System and method for recovering strong brine waste heat to heat domestic water |
| CN113428925A (en) * | 2021-07-22 | 2021-09-24 | 三门核电有限公司 | Low-temperature multi-effect seawater desalination device for recovering waste heat of coastal power station |
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| US20190161366A1 (en) * | 2017-11-29 | 2019-05-30 | King Fahd University Of Petroleum And Minerals | Integrated system with an absorption refrigeration subsystem and a desalination subsystem |
| CN212425487U (en) * | 2020-04-02 | 2021-01-29 | 郑州电力高等专科学校 | MED seawater desalination system using absorption heat pump coupled evaporator |
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| CN113072114B (en) * | 2021-05-08 | 2024-06-25 | 西安热工研究院有限公司 | System and method for heating domestic water by recovering waste heat of strong brine |
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