CN115353164A - Heating system and method for seawater desalination - Google Patents
Heating system and method for seawater desalination Download PDFInfo
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- CN115353164A CN115353164A CN202210793590.2A CN202210793590A CN115353164A CN 115353164 A CN115353164 A CN 115353164A CN 202210793590 A CN202210793590 A CN 202210793590A CN 115353164 A CN115353164 A CN 115353164A
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- 239000013535 sea water Substances 0.000 title claims abstract description 149
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 124
- 238000000034 method Methods 0.000 title claims abstract description 49
- 238000010438 heat treatment Methods 0.000 title claims abstract description 44
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 66
- 238000011033 desalting Methods 0.000 claims abstract description 4
- 238000004590 computer program Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
- 230000001276 controlling effect Effects 0.000 claims description 9
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 claims description 3
- 239000006227 byproduct Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 230000009467 reduction Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 238000009776 industrial production Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
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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
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/03—Pressure
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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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Abstract
The invention relates to the technical field of hot seawater desalination, in particular to a heating system for seawater desalination, which comprises: the adjusting device, the mixing device and the seawater desalting device are connected in sequence; the adjusting device is used for adjusting the pressure of the received target steam to a first target pressure and conveying the adjusted target steam to the mixing device; the mixing device is used for mixing the adjusted target steam with the dead steam of the steam turbine to obtain mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device, wherein the second target pressure is smaller than the first target pressure; and the seawater desalination device is used for absorbing the heat energy of the adjusted mixed steam and heating the seawater desalination process through the heat energy. The system improves the performance stability and the heat source stability of the thermal method seawater desalination device, keeps the stability of the water yield of the thermal method seawater desalination device, and improves the utilization rate of steam.
Description
Technical Field
The invention relates to the technical field of hot seawater desalination, in particular to a heating system and a heating method for seawater desalination.
Background
Nowadays, coastal steel enterprises, petrochemical enterprises or power generation enterprises generally use the exhaust steam of a steam turbine as a heat source, and the heat source is applied to a thermal seawater desalination project. However, when the exhaust steam of the steam turbine fluctuates, that is, the heat source formed by the exhaust steam has instability, the load of the thermal seawater desalination device needs to be adjusted correspondingly, and the problem of low performance stability of the thermal seawater desalination device caused by the instability of the heat source of the thermal seawater desalination device is caused.
Disclosure of Invention
The embodiment of the application provides a heating system and a heating method for seawater desalination, solves the technical problem that the performance stability of a thermal method seawater desalination device is low due to the instability of a heat source of the thermal method seawater desalination device in the prior art, improves the performance stability and the stability of the heat source of the thermal method seawater desalination device, keeps the stability of the water yield of the thermal method seawater desalination device, improves the utilization rate of various types of steam in the thermal method seawater desalination device, reduces resource waste and the like.
In a first aspect, an embodiment of the present invention provides a heating system for seawater desalination, including: the regulating device, the mixing device and the seawater desalting device are connected in sequence;
the regulating device is used for regulating the pressure of the received target steam to a first target pressure and conveying the regulated target steam to the mixing device;
the mixing device is used for mixing the adjusted target steam with the dead steam of the steam turbine to obtain mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device, wherein the second target pressure is smaller than the first target pressure;
the seawater desalination device is used for absorbing the heat energy of the adjusted mixed steam and heating the seawater desalination process through the heat energy.
Preferably, the adjusting means comprises: the output end of the pressure-reducing and temperature-reducing device is connected with the input end of the mixing device;
the pressure reducing and temperature reducing device is used for reducing the pressure of the first steam to the first target pressure after receiving the first steam, reducing the temperature of the first steam to the target temperature, and conveying the reduced first steam to the mixing device, wherein the target steam comprises the first steam.
Preferably, the adjusting means comprises: the output end of the pressure reducing valve bank is connected with the input end of the pressure reducing and temperature reducing device;
the pressure reducing valve group is used for reducing the pressure of the second steam to a third target pressure after receiving the second steam, and delivering the reduced pressure second steam to the pressure and temperature reducing device, wherein the third target pressure is higher than the first target pressure, and the target steam comprises the second steam.
Preferably, the seawater desalination device is a seawater desalination device adopting a thermal seawater desalination technology.
Based on the same inventive concept, in a second aspect, the present invention further provides a heating method for seawater desalination, which is applied to the above heating system for seawater desalination, and the method includes:
adjusting the pressure of the received target steam to a first target pressure through the adjusting device, and conveying the adjusted target steam to the mixing device;
mixing the adjusted target steam with the dead steam of a steam turbine through the mixing device to obtain mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device, wherein the second target pressure is smaller than the first target pressure;
and absorbing the heat energy of the adjusted mixed steam by the seawater desalination device, and heating the seawater desalination process by the heat energy.
Preferably, the adjusting device for adjusting the pressure of the received target steam to a first target pressure and delivering the adjusted target steam to the mixing device includes:
after receiving the first steam through the pressure reducing and temperature reducing device, controlling the pressure reducing and temperature reducing device to reduce the pressure of the first steam to the first target pressure, reducing the temperature of the first steam to the target temperature, and delivering the reduced pressure first steam to the mixing device, wherein the target steam comprises the first steam, and the adjusting device comprises the pressure reducing and temperature reducing device.
Preferably, during the process of receiving the first steam through the pressure and temperature reducing device, the method further comprises:
after receiving second steam through the pressure reducing valve bank, controlling the pressure reducing valve bank to reduce the pressure of the second steam to a third target pressure, and conveying the second steam after pressure reduction to the pressure reducing and temperature reducing device, wherein the third target pressure is greater than the first target pressure, the target steam comprises the second steam, and the adjusting device comprises the pressure reducing valve bank.
Preferably, after the process for desalinating seawater is heated by the heat energy, the method further comprises:
and controlling the seawater desalination device to condense the adjusted mixed steam into condensed water.
Preferably, after the seawater desalination process is heated by the heat energy, the method further comprises:
and conveying the desuperheating water into the pressure-reducing and desuperheating device through the seawater desalination device so as to enable the desuperheating water to exchange heat in the pressure-reducing and desuperheating device, wherein the desuperheating water comprises the condensed water and the desalinated water, and the desalinated water is water obtained by converting seawater into water source water quality through the seawater desalination device.
Based on the same inventive concept, in a third aspect, the present invention provides a computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of the heating method for desalinating seawater when executing the program.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
the heating system for seawater desalination of the embodiment of the invention comprises: the device comprises a regulating device, a mixing device and a seawater desalting device which are connected in sequence. The heating system firstly adjusts the pressure of the received target steam to a first target pressure through the adjusting device, and conveys the adjusted target steam to the mixing device. Here, the pressure of the byproduct steam of the relevant industrial production line is reduced to the first target pressure, so that the pressure of the byproduct steam is reduced, the mixing device is convenient to use, the utilization rate of the target steam is improved, and the energy waste is reduced.
And then, mixing the adjusted target steam with the dead steam of the steam turbine through a mixing device to form mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device. The adjusted target steam and the dead steam are mixed through the mixing device to form mixed steam, the pressure of the mixed steam is reduced to a second target pressure, the target steam and the dead steam are uniformly mixed, expanded and decompressed to form the adjusted mixed steam, and the stability of the mixed steam and the stability of a heat source formed by the mixed steam are improved. And the adjusted mixed steam is used as a heat source and is conveyed to the seawater desalination device, so that the load requirement of the seawater desalination device caused by the exhaust steam fluctuation of a steam turbine is met, the impact of the change of the exhaust steam quantity of the steam turbine on the seawater desalination device in the cogeneration process is reduced, the steam quantity stability of the seawater desalination device is improved, the operation stability of the seawater desalination device is ensured, and the effluent quality and the water quantity of the seawater desalination device are ensured.
Then, the seawater desalination device absorbs the heat energy of the adjusted mixed steam to carry out thermal seawater desalination treatment on the seawater to form desalinated seawater, and the adjusted mixed steam releases heat and is condensed into condensed water. Here, since the seawater desalination apparatus absorbs the stabilized heat energy of the adjusted mixed steam, the performance stability of the seawater desalination apparatus is ensured, and the water yield of the seawater desalination apparatus and the stability of the quality of the desalinated water are maintained.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 shows a block schematic diagram of a heating system for desalination of sea water in an embodiment of the present invention;
fig. 2 is a schematic flow chart illustrating steps of a heating method for desalinating seawater according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Example one
A first embodiment of the present invention provides a heating system for desalinating seawater, as shown in fig. 1, including: the device comprises a regulating device 101, a mixing device 102 and a seawater desalination device 103 which are connected in sequence, namely, the output end of the regulating device 101 is connected with the input end of the mixing device 102, and the output end of the mixing device 102 is connected with the output end of the seawater desalination device 103.
The adjusting device 101 is configured to adjust the pressure of the received target steam to a first target pressure, and deliver the adjusted target steam to the mixing device 102. The target steam is byproduct steam of industrial production lines such as a water and electricity cogeneration production line, a steel production line, a petrochemical production line or a power generation production line. The target steam comprises high-pressure steam and/or low-pressure steam, wherein the high-pressure steam is byproduct steam with a pressure value larger than 0.4MPa, and the low-pressure steam is byproduct steam with a pressure value not larger than 0.4MPa and not smaller than 0.1 MPa.
And the mixing device 102 is configured to mix the adjusted target steam with the exhaust steam of the steam turbine to obtain mixed steam, adjust the pressure of the mixed steam to a second target pressure, and then convey the adjusted mixed steam to the seawater desalination device 103, where the second target pressure is smaller than the first target pressure. The mixing device 102 is a related device that uniformly mixes a plurality of types of steam and expands and reduces the pressure to a negative pressure.
The seawater desalination device 103 is configured to absorb heat energy of the adjusted mixed steam, and heat a seawater desalination process by the heat energy, where the seawater desalination process is a process of desalinating seawater into desalinated water. The seawater desalination device 103 is further configured to convert seawater into desalinated water after heating the seawater desalination process, and condense the adjusted mixed steam into condensed water. The desalinated water is water obtained by converting seawater into water of a water source quality by the seawater desalination apparatus 103. The seawater desalination device 103 is a related device of a seawater desalination system adopting a thermal seawater desalination technology.
In the present embodiment, the first target pressure and the second target pressure are set according to actual demands. The first target pressure is usually 0.1MPa, the second target pressure is negative pressure, and the pressure range of the second target pressure is usually 30KPa-35KPa.
In the heating system of the present embodiment, the pressure of the received target steam is adjusted to the first target pressure by the adjusting device 101, and the adjusted target steam is delivered to the mixing device 102. Here, the pressure of the byproduct steam of the relevant industrial production line is reduced to the first target pressure, so that the pressure of the byproduct steam is reduced for the mixing device 102 to use, the utilization rate of the target steam is improved, and the energy waste is reduced.
Then, the adjusted target steam is mixed with the exhaust steam of the steam turbine by the mixing device 102 to form mixed steam, the pressure of the mixed steam is adjusted to a second target pressure, and the adjusted mixed steam is delivered to the seawater desalination device 103. Here, the adjusted target steam is mixed with the dead steam by the mixing device 102 to form mixed steam, and the pressure of the mixed steam is reduced to a second target pressure, so that the target steam and the dead steam are uniformly mixed, expanded and decompressed to form the adjusted mixed steam, thereby improving the stability of the mixed steam and the stability of the mixed steam forming a heat source. The adjusted mixed steam is used as a heat source and is conveyed to the seawater desalination device 103, so that the load requirement of the seawater desalination device 103 caused by the exhaust steam fluctuation of a steam turbine is met, the impact of the change of the exhaust steam quantity of the steam turbine on the seawater desalination device 103 in the cogeneration process is reduced, the steam quantity stability of the seawater desalination device 103 is improved, the operation stability of the seawater desalination device 103 is ensured, and the water quality and the water quantity of the effluent of the seawater desalination device 103 are guaranteed.
Then, the seawater desalination apparatus 103 performs thermal seawater desalination on the seawater by absorbing the heat energy of the adjusted mixed steam, so that the seawater forms desalinated water, and releases heat from the adjusted mixed steam to condense the desalinated water into condensed water. Here, since the seawater desalination apparatus 103 absorbs the stable heat energy of the adjusted mixed steam, the performance stability of the seawater desalination apparatus 103 is ensured, and the water yield of the seawater desalination apparatus 103 and the stability of the quality of the desalinated water are maintained.
With reference to fig. 1, the structure of the heating system for seawater desalination of the present embodiment is described in detail:
the adjusting device 101 includes: a pressure reducing and temperature reducing device 1012, wherein the output end of the pressure reducing and temperature reducing device 1012 is connected with the input end of the mixing device 102. And a pressure reducing and temperature reducing device 1012, configured to reduce the pressure of the first steam to a first target pressure after receiving the first steam, reduce the temperature of the first steam to a target temperature, and deliver the reduced pressure first steam to the mixing device 102, where the target steam includes the first steam, and the first steam is low-pressure steam. The target temperature is set according to actual requirements, and usually the value range of the target temperature is 80-110 ℃.
The adjustment device 101 further comprises: the output end of the pressure reducing valve bank 1011 is connected with the input end of the pressure reducing and temperature reducing device 1012. And the pressure reducing valve set 1011 is configured to reduce the pressure of the second steam to a third target pressure after receiving the second steam, and deliver the reduced second steam to the pressure reducing and temperature reducing device 1012, where the third target pressure is greater than the first target pressure, the target steam includes the second steam, the second steam is high-pressure steam, and the reduced second steam is low-pressure steam. The third target pressure is set according to actual demand, and typically the third target pressure is set to 0.4MPa.
It should be noted that the ratio of the high-pressure steam and the low-pressure steam can be adjusted according to the load demand of the seawater desalination apparatus 103.
The working principle and the application method of the heating system for seawater desalination of the embodiment are as follows:
the high-pressure steam is input into a pressure reducing valve group 1011, the pressure of the high-pressure steam is reduced to 0.4MPa through the pressure reducing valve group 1011 to obtain the reduced-pressure high-pressure steam, the reduced-pressure high-pressure steam is essentially low-pressure steam, and the reduced-pressure high-pressure steam is input into a pressure reducing and temperature reducing device 1012.
The pressure-reducing and temperature-reducing device 1012 receives the high-pressure steam and/or the low-pressure steam after pressure reduction, and the pressure-reducing and temperature-reducing device 1012 further reduces the pressure of the high-pressure steam and/or the low-pressure steam after pressure reduction to 0.1MPa, namely reduces the pressure of the high-pressure steam and/or the low-pressure steam after pressure reduction to 0.1MPa, and basically reduces the temperature of the high-pressure steam and/or the low-pressure steam after pressure reduction to about 100 ℃, so as to obtain the adjusted target steam. The adjusted target steam is then input into the mixing device 102.
The mixing device 102 receives the adjusted target steam and the exhaust steam of the steam turbine, the adjusted target steam and the exhaust steam of the steam turbine are uniformly mixed through the mixing device 102 to form mixed steam, and the mixed steam is expanded and decompressed to negative pressure to form the adjusted mixed steam. Wherein the adjusted temperature and pressure of the mixed steam satisfy an ideal gas equation. And the adjusted mixed steam is used as a heat source to be input into the seawater desalination device 103.
The seawater desalination apparatus 103 performs thermal seawater desalination treatment on seawater by absorbing heat energy of the adjusted mixed steam, converts the seawater into desalinated water, and condenses the adjusted mixed steam into cold water. The seawater desalination apparatus 103 also supplies the desuperheated water to the pressure-reducing desuperheater 1012, and the desuperheated water is heat-exchanged in the pressure-reducing desuperheater 1012. Wherein the desuperheating water comprises condensed water and desalted water.
The pressure-reducing and temperature-reducing device 1012 performs heat exchange with the temperature-reducing water to transfer the temperature of the high-pressure steam and/or the low-pressure steam after pressure reduction to the temperature-reducing water, so that the temperature of the high-pressure steam and/or the low-pressure steam after pressure reduction is reduced, and the temperature of the temperature-reducing water is increased.
One or more technical solutions in the embodiments of the present invention at least have the following technical effects or advantages:
in the heating system of the embodiment, the pressure of the received target steam is adjusted to the first target pressure by the adjusting device, and the adjusted target steam is conveyed to the mixing device. Here, the pressure of the byproduct steam of the relevant industrial production line is reduced to the first target pressure, so that the pressure of the byproduct steam is reduced, the mixing device is convenient to use, the utilization rate of the target steam is improved, and the energy waste is reduced.
And then, mixing the adjusted target steam with the dead steam of the steam turbine through a mixing device to form mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device. The adjusted target steam and the dead steam are mixed through the mixing device to form mixed steam, the pressure of the mixed steam is reduced to a second target pressure, the target steam and the dead steam are uniformly mixed, expanded and decompressed to form the adjusted mixed steam, and the stability of the mixed steam and the stability of a heat source formed by the mixed steam are improved. And the adjusted mixed steam is used as a heat source and is conveyed to the seawater desalination device, so that the load requirement of the seawater desalination device caused by the exhaust steam fluctuation of a steam turbine is met, the impact of the change of the exhaust steam quantity of the steam turbine on the seawater desalination device in the cogeneration process is reduced, the steam quantity stability of the seawater desalination device is improved, the operation stability of the seawater desalination device is ensured, and the effluent quality and the water quantity of the seawater desalination device are ensured.
Then, the seawater desalination device absorbs the heat energy of the adjusted mixed steam to carry out thermal seawater desalination treatment on the seawater, so that the seawater forms desalinated water, and the adjusted mixed steam releases heat and is condensed into condensed water. Here, since the seawater desalination apparatus absorbs the stable heat energy of the adjusted mixed steam, the performance stability of the seawater desalination apparatus is ensured, and the water yield of the seawater desalination apparatus and the stability of the quality of the desalinated water are maintained.
Example two
Based on the same inventive concept, a second embodiment of the present invention further provides a heating method for seawater desalination, which is applied to the above-mentioned heating system for seawater desalination, as shown in fig. 2, and the method includes:
s201, adjusting the pressure of the received target steam to a first target pressure through the adjusting device, and conveying the adjusted target steam to the mixing device;
s202, mixing the adjusted target steam with the exhaust steam of a steam turbine through the mixing device to obtain mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device, wherein the second target pressure is smaller than the first target pressure;
s203, absorbing the heat energy of the adjusted mixed steam through the seawater desalination device, and heating the seawater desalination process through the heat energy.
As an alternative embodiment, the adjusting the pressure of the received target steam to a first target pressure by the adjusting device, and delivering the adjusted target steam to the mixing device includes:
after receiving the first steam through the pressure reducing and temperature reducing device, controlling the pressure reducing and temperature reducing device to reduce the pressure of the first steam to the first target pressure, reducing the temperature of the first steam to the target temperature, and delivering the reduced pressure first steam to the mixing device, wherein the target steam comprises the first steam, and the adjusting device comprises the pressure reducing and temperature reducing device.
As an optional embodiment, in the process of receiving the first steam through the pressure and temperature reducing device, the method further comprises:
after receiving second steam through the pressure reducing valve bank, controlling the pressure reducing valve bank to reduce the pressure of the second steam to a third target pressure, and conveying the second steam after pressure reduction to the pressure reducing and temperature reducing device, wherein the third target pressure is greater than the first target pressure, the target steam comprises the second steam, and the adjusting device comprises the pressure reducing valve bank.
As an alternative embodiment, after the seawater desalination process is heated by the thermal energy, the method further comprises:
and controlling the seawater desalination device to condense the adjusted mixed steam into condensed water.
As an optional embodiment, after the seawater desalination process is heated by the thermal energy, the method further comprises:
and conveying the desuperheating water into the pressure-reducing and desuperheating device through the seawater desalination device so as to enable the desuperheating water to exchange heat in the pressure-reducing and desuperheating device, wherein the desuperheating water comprises the condensed water and the desalinated water, and the desalinated water is water obtained by converting seawater into water source water quality through the seawater desalination device.
Since the heating method for sea water desalination described in this embodiment is a method adopted for implementing the heating system for sea water desalination in the first embodiment of this application, based on the heating system for sea water desalination described in the first embodiment of this application, a person skilled in the art can understand a specific implementation manner of the heating method for sea water desalination of this embodiment and various variations thereof, so that a detailed description of how to implement the system in the first embodiment of this application with the heating method for sea water desalination is not given here. The method for implementing the heating system for desalinating seawater in the first embodiment of the present application is within the scope of protection of the present application, as long as a person skilled in the art can implement the method.
EXAMPLE III
Based on the same inventive concept, a third embodiment of the present invention further provides a computer device, which comprises a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor implements the steps of any one of the above-mentioned heating methods for desalinating seawater when executing the program.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention has been described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A heating system for desalination of sea water, comprising: the regulating device, the mixing device and the seawater desalting device are connected in sequence;
the adjusting device is used for adjusting the pressure of the received target steam to a first target pressure and conveying the adjusted target steam to the mixing device;
the mixing device is used for mixing the adjusted target steam with the dead steam of the steam turbine to obtain mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device, wherein the second target pressure is smaller than the first target pressure;
the seawater desalination device is used for absorbing the heat energy of the adjusted mixed steam and heating the seawater desalination process through the heat energy.
2. The heating system of claim 1, wherein the adjustment device comprises: the output end of the pressure-reducing and temperature-reducing device is connected with the input end of the mixing device;
the pressure reducing and temperature reducing device is used for reducing the pressure of the first steam to the first target pressure after receiving the first steam, reducing the temperature of the first steam to the target temperature, and conveying the reduced first steam to the mixing device, wherein the target steam comprises the first steam.
3. A heating system as claimed in claim 2, wherein the adjustment means comprises: the output end of the pressure reducing valve bank is connected with the input end of the pressure reducing and temperature reducing device;
the pressure reducing valve group is used for reducing the pressure of the second steam to a third target pressure after receiving the second steam, and delivering the reduced pressure second steam to the pressure and temperature reducing device, wherein the third target pressure is higher than the first target pressure, and the target steam comprises the second steam.
4. The heating system of claim 1, wherein the seawater desalination plant is a seawater desalination plant that employs thermal desalination technology.
5. A heating method for seawater desalination, which is applied to the heating system for seawater desalination according to any one of claims 1 to 4, and which comprises:
adjusting the pressure of the received target steam to a first target pressure through the adjusting device, and conveying the adjusted target steam to the mixing device;
mixing the adjusted target steam with the dead steam of a steam turbine through the mixing device to obtain mixed steam, adjusting the pressure of the mixed steam to a second target pressure, and then conveying the adjusted mixed steam to the seawater desalination device, wherein the second target pressure is smaller than the first target pressure;
and absorbing the heat energy of the adjusted mixed steam through the seawater desalination device, and heating the seawater desalination process through the heat energy.
6. The method of claim 5, wherein the adjusting the pressure of the received target steam to a first target pressure by an adjusting device and delivering the adjusted target steam to the mixing device comprises:
after receiving the first steam through the pressure reducing and temperature reducing device, controlling the pressure reducing and temperature reducing device to reduce the pressure of the first steam to the first target pressure, reducing the temperature of the first steam to the target temperature, and delivering the reduced pressure first steam to the mixing device, wherein the target steam comprises the first steam, and the adjusting device comprises the pressure reducing and temperature reducing device.
7. The method of claim 6, wherein during the receiving of the first steam by the pressure reducing attemperation device, further comprising:
after receiving second steam through the pressure reducing valve bank, controlling the pressure reducing valve bank to reduce the pressure of the second steam to a third target pressure, and delivering the reduced second steam to the pressure reducing and temperature reducing device, wherein the third target pressure is greater than the first target pressure, the target steam comprises the second steam, and the regulating device comprises the pressure reducing valve bank.
8. The method of claim 6, further comprising, after heating the desalinated seawater process by the thermal energy,:
and controlling the seawater desalination device to condense the adjusted mixed steam into condensed water.
9. The method of claim 8, further comprising, after heating the desalinated seawater process by the thermal energy,:
and conveying the desuperheating water into the pressure-reducing and desuperheating device through the seawater desalination device so as to enable the desuperheating water to exchange heat in the pressure-reducing and desuperheating device, wherein the desuperheating water comprises condensed water and desalinated water, and the desalinated water is water obtained by converting seawater into water source water quality through the seawater desalination device.
10. A computer arrangement comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that the processor implements the method steps of any of claims 5-9 when executing the program.
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