CN112010381A - Device and method for preparing hot distilled water through multistage flash evaporation - Google Patents
Device and method for preparing hot distilled water through multistage flash evaporation Download PDFInfo
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 270
- 239000012153 distilled water Substances 0.000 title claims abstract description 248
- 238000001704 evaporation Methods 0.000 title claims abstract description 40
- 230000008020 evaporation Effects 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000007788 liquid Substances 0.000 claims abstract description 208
- 239000002994 raw material Substances 0.000 claims abstract description 203
- 238000010438 heat treatment Methods 0.000 claims abstract description 25
- 238000007701 flash-distillation Methods 0.000 claims description 11
- 238000010992 reflux Methods 0.000 claims description 7
- 238000004821 distillation Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 8
- 238000010612 desalination reaction Methods 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 4
- 239000013535 sea water Substances 0.000 description 4
- 101100134058 Caenorhabditis elegans nth-1 gene Proteins 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011144 upstream manufacturing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000012527 feed solution Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/06—Flash evaporation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1058—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system disposition of pipes and pipe connections
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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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- 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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- Life Sciences & Earth Sciences (AREA)
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- Combustion & Propulsion (AREA)
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- General Engineering & Computer Science (AREA)
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Abstract
The invention provides a device and a method for preparing hot distilled water by multistage flash evaporation, wherein the device for preparing the hot distilled water by the multistage flash evaporation comprises the following steps: an N-stage condenser; the raw material liquid input end of the raw material liquid heater is communicated with the raw material liquid output end of the N-level condenser and is used for heating the raw material liquid; the raw material liquid input end of the N-stage flash evaporator is communicated with the raw material liquid output end of the raw material liquid heater; the steam output end of the Mth-stage flash evaporator is communicated with the steam input end of the Mth-stage condenser and is used for preheating the raw material liquid and generating distilled water; n is more than or equal to 2, and N is more than or equal to M is more than or equal to 1; the distilled water generated by each condenser is collected at the output end of the condenser with the highest pressure and then discharged. This application preheats raw materials liquid through the steam that flashes out to the multistage heating of the distilled water that the condenser produced, the heat that effective utilization preparation pure water consumed, and reduced the cost of preparing hot pure water by a wide margin.
Description
Technical Field
The invention relates to the technical field of preparation of hot distilled water, in particular to a device and a method for preparing hot distilled water by multistage flash evaporation.
Background
With the development of society and the advance of urbanization process, the shortage of water resources becomes an important factor for restricting the development of socioeconomic development of China. China is one of the countries with the most scarce water resources in the world. Seawater desalination is an effective means for increasing water resource from the source, is an important way for solving the water resource shortage, and is also an inevitable requirement for ensuring the sustainable development of society. The seawater desalination technology develops rapidly in recent years, wherein the seawater desalination technologies such as a distillation method, a reverse osmosis method and the like are mature day by day and are applied more and more widely in vast coastal areas of China, but the desalination cost of the technologies is generally higher at present. Therefore, it is required to develop a novel hot distilled water preparing apparatus.
Disclosure of Invention
Objects of the invention
The invention aims to provide a device for preparing hot distilled water by multi-stage flash evaporation, which can save the desalination cost and can produce hot distilled water.
(II) technical scheme
In order to solve the above problems, a first aspect of the present invention provides an apparatus for preparing hot distilled water by multi-stage flash evaporation, comprising: an N-stage condenser; a raw material liquid input end of the raw material liquid heater is communicated with a raw material liquid output end of the N-level condenser and is used for heating the raw material liquid; the raw material liquid input end of the N-stage flash evaporator is communicated with the raw material liquid output end of the raw material liquid heater; the steam output end of the Mth-stage flash evaporator is communicated with the steam input end of the Mth-stage condenser, and the steam flashed out enters the condenser to be used for preheating the raw material liquid and generating distilled water; n is more than or equal to 2, and N is more than or equal to M is more than or equal to 1; and the distilled water generated by each condenser is collected at the output end of the condenser with the highest pressure and then discharged.
Further, N grades the condenser communicates in proper order, is used for right raw materials liquid preheats step by step, raw materials liquid is followed the Nth grade raw materials liquid input of condenser is imported, first order the raw materials liquid output of condenser with raw materials liquid input intercommunication of raw materials liquid heater.
Further, a raw material liquid output end of the N-stage condenser is respectively communicated with a raw material liquid input end of the raw material liquid heater; and the raw material liquid input ends of the N-stage condensers are converged at the input end of the Nth-stage condenser.
And further, the N-level flash evaporators are sequentially communicated and are used for flashing the raw material liquid step by step, the raw material liquid input end of the first-level flash evaporator is communicated with the raw material liquid output end of the raw material liquid heater, and the raw material liquid after flashing is discharged from the N-level output end of the flash evaporator.
Furthermore, the raw material liquid input end of the N-level flash evaporator is respectively communicated with the raw material liquid output end of the raw material liquid heater, and the raw material liquid output end of the N-level flash evaporator is converged at the output end of the N-level flash evaporator.
Further, still include: the input end of the reflux pipeline is communicated with the raw material liquid output end of the flash evaporator of the Nth stage, and the output end of the reflux pipeline is communicated with the raw material liquid input end of the condenser of the Mth stage; wherein N is more than or equal to 2, and N is more than M and more than or equal to 1
Further, still include: an N-stage distilled water heater; the distilled water input end of the N-th stage of the distilled water heater is communicated with the distilled water output end of the N-th stage of the condenser; the hot distilled water output end of the N-th stage of the distilled water heater is communicated with the hot distilled water input end of the M-th stage of the distilled water heater; the hot distilled water output end of the M-stage distilled water heater is communicated with the hot distilled water input end of the first-stage distilled water heater; the distilled water output end of the M-th stage condenser is communicated with the hot distilled water input end of the M-1-th stage distilled water heater; the distilled water output end of the first-stage condenser and the hot distilled water output end of the first-stage distilled water heater are respectively communicated with the input end of a hot distilled water discharge pipeline, and the discharge end of the hot distilled water discharge pipeline is communicated with a heating pipeline;
the steam input end of the M-th stage of the distilled water heater is communicated with the steam output end of the M-th stage of the flash evaporator and is used for further heating the hot distilled water; and the water vapor input end of the first-stage distilled water heater is communicated with the water vapor output end of the first-stage flash evaporator, wherein N is more than M and more than 1.
Furthermore, every condenser is provided with the distilled water and collects the portion, N the distilled water of condenser collects the portion and communicates in proper order, is used for to the distilled water heats step by step, follows the first order after the hot distilled water of preset temperature is generated the distilled water output of condenser is discharged.
Furthermore, each condenser is provided with a distilled water collecting part, and the distilled water output ends of the distilled water collecting parts of all the condensers are collected at the distilled water output end of the distilled water collecting part of the first-stage condenser and then discharged to generate hot distilled water with a preset temperature.
According to another aspect of the invention, a method for preparing hot distilled water by multi-stage flash evaporation is provided, wherein the hot distilled water is obtained by using the device for preparing hot distilled water by multi-stage flash evaporation in any scheme.
(III) advantageous effects
The technical scheme of the invention has the following beneficial technical effects:
this application adopts the mode of multistage flash distillation to produce the hot distilled water, effectively utilizes the heat that the preparation pure water consumed, has reduced the cost of preparing the hot distilled water by a wide margin, and the hot distilled water temperature of production is higher, can satisfy the temperature demand of winter heating, can utilize the heat supply pipe network to carry fresh water to user's department, realizes heat and fresh water's coproduction and simultaneously delivers, can reduce conveying cost by a wide margin.
Drawings
FIG. 1 is a schematic diagram of a first multistage flash distillation apparatus for producing hot distilled water according to the present invention;
FIG. 2 is a schematic view showing the structure of a second multistage flash apparatus for producing hot distilled water according to the present invention;
FIG. 3 is a schematic view showing the structure of a third apparatus for producing hot distilled water by multistage flash evaporation according to the present invention;
FIG. 4 is a schematic view showing the construction of a fourth multistage flash apparatus for producing hot distilled water according to the present invention;
FIG. 5 is a schematic diagram of an apparatus for producing hot distilled water by a fifth multi-stage flash evaporation according to the present invention;
FIG. 6 is a schematic diagram of a sixth multistage flash apparatus for producing hot distilled water according to the present invention.
Reference numerals:
1: a condenser; 11: a cooling water input end; 12: a cooling water output end; 2: a raw material liquid heater; 3: a flash evaporator; 4: a return line; 5: a distilled water heater; 6: and (4) a water drainage pipeline.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in conjunction with the following detailed description. It should be understood that the description is intended to be exemplary only, and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
In the drawings there is shown a schematic representation of an embodiment in accordance with the invention. The figures are not drawn to scale, wherein certain details may be omitted for clarity. The various regions shown in the figures and their relative sizes and positional relationships are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes and relative positions according to the actual requirements.
It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by like reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale.
FIG. 1 is a schematic diagram of the first multistage flash distillation apparatus for producing hot distilled water according to the present invention.
In a first embodiment of the present invention, as shown in fig. 1, there is provided an apparatus for producing hot distilled water by multistage flash evaporation, mainly comprising an N-stage condenser 1, a raw material liquid heater 2 and an N-stage flash evaporator 3. The raw material liquid input end of the raw material liquid heater 2 is communicated with the raw material liquid output end of the N-level condenser 1 and is used for heating the raw material liquid; the raw material liquid input end of the N-stage flash evaporator 3 is communicated with the raw material liquid output end of the raw material liquid heater 2; the water vapor output end of the Mth-stage flash evaporator 3 is communicated with the water vapor input end of the Mth-stage condenser 1 and is used for preheating the raw material liquid and generating distilled water; n is more than or equal to 2, and N is more than or equal to M is more than or equal to 1; the distilled water generated by each condenser 1 is collected at the output end of the condenser 1 with the highest pressure and then discharged.
Specifically, the application provides a device of multistage flash distillation preparation hot distilled water, condenser 1 and flash vessel 3 at the same level can set up in same casing, raw materials liquid passes through raw materials liquid pipeline and realizes preheating raw materials liquid step by step through multistage condenser 1, the heat source of preheating raw materials liquid comes from the vapor that multistage flash vessel 3 produced, and multistage flash vessel 3 corresponds the setting with multistage condenser 1, raw materials liquid through the heating of raw materials liquid heater 2 obtains vapor through the flash distillation, vapor's temperature is higher than the temperature of raw materials liquid, let in around the raw materials liquid pipeline in condenser 1, through the heat transfer, accomplish preheating to raw materials liquid, in this process, vapor liquefaction becomes distilled water, distilled water is under the effect of external force, from condenser 1 of low pressure flow to highly compressed condenser 1 in proper order, make the distilled water heating intensification. According to the series arrangement of the condenser 1 and the flash evaporator 3, the initial temperature of the raw material liquid, the heating temperature of the raw material liquid heater 2 and other factors, the generation of the hot distilled water with the preset temperature is realized.
FIG. 2 is a schematic diagram of the second multistage flash distillation apparatus for producing hot distilled water according to the present invention.
In some embodiments, as shown in fig. 2, the N-stage condensers 1 are sequentially connected for preheating the raw material liquid stage by stage, the raw material liquid is input from the raw material liquid input end of the N-stage condenser 1, and the raw material liquid output end of the first stage condenser 1 is connected to the raw material liquid input end of the raw material liquid heater 2.
Specifically, a raw material liquid output end of an Nth-stage condenser 1 is communicated with a raw material liquid input end of an Nth-1 th-stage condenser 1, a raw material liquid output end of the Nth-1 th-stage condenser 1 is communicated with a raw material liquid input end of an Mth-stage condenser 1, a raw material liquid output end of the Mth-stage condenser 1 is communicated with a raw material liquid input end of a first-stage condenser 1, raw material liquid enters from a raw material liquid input end of the Nth-stage condenser 1, sequentially flows through the multistage condensers 1 for heating the raw material liquid step by step, and finally, the raw material liquid which is heated step by step is discharged from a raw material liquid output end of the first-stage condenser 1 and enters a raw material liquid heater 2 communicated with a raw material liquid output end of the first-stage condenser 1 for.
In one embodiment, the apparatus for preparing hot distilled water by multi-stage flash evaporation comprises a four-stage condenser 1. The raw material liquid output end of the fourth-stage condenser 1 is communicated with the raw material liquid input end of the third-stage condenser 1, the raw material liquid output end of the third-stage condenser 1 is communicated with the raw material liquid input end of the second-stage condenser 1, and the raw material liquid output end of the second-stage condenser 1 is communicated with the raw material liquid input end of the first-stage condenser 1.
In another specific embodiment, the device for preparing hot distilled water by multi-stage flash evaporation comprises a two-stage condenser 1, wherein a raw material liquid output end of the two-stage condenser 1 is communicated with a raw material liquid input end of a first-stage condenser 1.
FIG. 3 is a schematic view showing the structure of a third apparatus for producing hot distilled water by multistage flash evaporation according to the present invention; .
In some embodiments, as shown in fig. 3, the raw material liquid output ends of the N-stage condensers 1 are respectively communicated with the raw material liquid input ends of the raw material liquid heaters 2; the raw material liquid input end of the N-stage condenser 1 is converged at the input end of the N-stage condenser 1.
Specifically, a raw material liquid output end of the Nth-stage condenser 1, a raw material liquid output end of the Nth-1-stage condenser 1, a raw material liquid output end of the Mth-stage condenser 1 and a raw material liquid output end of the first-stage condenser 1 are respectively communicated with a raw material liquid input end of the raw material liquid heater 2; the raw material liquid input end of the N-stage condenser 1 is converged at the input end of the Nth-stage condenser 1, wherein N-1 is more than or equal to M and more than or equal to 2.
In one embodiment, the apparatus for preparing hot distilled water by multi-stage flash evaporation comprises a four-stage condenser 1. The raw material liquid output end of the fourth-stage condenser 1, the raw material liquid output end of the third-stage condenser 1, the raw material liquid output end of the second-stage condenser 1 and the raw material liquid output end of the first-stage condenser 1 are respectively communicated with the raw material liquid input end of the raw material liquid heater 2; the feed liquid inputs of all condensers 1 are collected at the input of the fourth-stage condenser 1.
In another specific embodiment, the device for preparing hot distilled water by multi-stage flash evaporation comprises a two-stage condenser 1, wherein a raw material liquid output end of the two-stage condenser 1 and a raw material liquid output end of the first-stage condenser 1 are respectively communicated with a raw material liquid input end of a raw material liquid heater 2.
In some embodiments, N-stage flash evaporators 3 are sequentially connected for flash evaporation of the raw material liquid stage by stage, the raw material liquid input end of the first-stage flash evaporator 3 is connected to the raw material liquid output end of the raw material liquid heater 2, and the flash evaporated raw material liquid is discharged from the output end of the nth-stage flash evaporator 3.
Specifically, a raw material liquid input end of a first-stage flash evaporator 3 is communicated with a raw material liquid output end of a raw material liquid heater 2, a raw material liquid output end of the first-stage flash evaporator 3 is communicated with a raw material liquid input end of an Mth-stage flash evaporator 3, a raw material liquid output end of the Mth-stage flash evaporator 3 is communicated with a raw material liquid input end of an Nth-1-stage flash evaporator 3, a raw material liquid output end of the Nth-1-stage flash evaporator 3 is communicated with a raw material liquid input end of the Nth-stage flash evaporator 3, wherein N-1 is not less than M and is not less than 2. Raw material liquid heated by the raw material liquid heater 2 passes through the multistage flash evaporator 3 and is subjected to flash evaporation step by step to obtain water vapor, the raw material liquid subjected to flash evaporation is discharged from the raw material liquid output end of the Nth-stage flash evaporator 3, the raw material liquid enters the flash evaporation for multiple times, the moisture of the raw material liquid is reduced, the process of the multistage flash evaporation is also a process for concentrating the raw material liquid, and the raw material liquid discharged from the raw material liquid output end of the Nth-stage flash evaporator 3 is concentrated raw material liquid.
In one embodiment, the apparatus for producing hot distilled water by multi-stage flash evaporation comprises a four-stage flash evaporator 3. The raw material liquid input end of the first-stage flash evaporator 3 is communicated with the raw material liquid output end of the raw material liquid heater 2, the raw material liquid output end of the first-stage flash evaporator 3 is communicated with the raw material liquid input end of the second-stage flash evaporator 3, the raw material liquid output end of the second-stage flash evaporator 3 is communicated with the raw material liquid input end of the third-stage flash evaporator 3, and the raw material liquid output end of the third-stage flash evaporator 3 is communicated with the raw material liquid input end of the fourth-stage flash evaporator 3.
In another embodiment, the apparatus for producing hot distilled water by multi-stage flash evaporation comprises a two-stage flash evaporator 3. The raw material liquid input end of the first-stage flash evaporator 3 is communicated with the raw material liquid output end of the raw material liquid heater 2, the raw material liquid output end of the first-stage flash evaporator 3 is communicated with the raw material liquid input end of the second-stage flash evaporator 3, and the raw material liquid output end of the second-stage flash evaporator 3 is used for discharging the raw material liquid after flash evaporation.
In some embodiments, the feed liquid input ends of the N-stage flash evaporators 3 are respectively connected to the feed liquid output ends of the feed liquid heaters 2, and the feed liquid output ends of all the flash evaporators 3 are collected at the output end of the nth-stage flash evaporator 3.
Specifically, a raw material liquid input end of a first-stage flash evaporator 3, a raw material liquid input end of an Mth-stage flash evaporator 3, a raw material liquid input end of an Nth-1-stage flash evaporator 3 and a raw material liquid input end of the Nth-stage flash evaporator 3 are respectively communicated with a raw material liquid output end of a raw material liquid heater 2, raw material liquid output ends of all flash evaporators 3 are converged at an output end of the Nth-stage flash evaporator 3, wherein N-1 is not less than M and not less than 2.
In one embodiment, the apparatus for producing hot distilled water by multi-stage flash evaporation comprises a four-stage flash evaporator 3. The raw material liquid input end of the first-stage flash evaporator 3, the raw material liquid input end of the second-stage flash evaporator 3, the raw material liquid input end of the third-stage flash evaporator 3 and the raw material liquid input end of the fourth-stage flash evaporator 3 are respectively communicated with the raw material liquid output end of the raw material liquid heater 2, and the raw material liquid output ends of all the flash evaporators 3 are converged at the output end of the fourth-stage flash evaporator 3.
In another embodiment, the apparatus for producing hot distilled water by multi-stage flash evaporation comprises a two-stage flash evaporator 3. The raw material liquid input end of the first-stage flash evaporator 3 and the raw material liquid input end of the second-stage flash evaporator 3 are respectively communicated with the raw material liquid output end of the raw material liquid heater 2, and the raw material liquid output ends of all the flash evaporators 3 are converged at the output end of the second-stage flash evaporator 3.
In some embodiments, the apparatus for producing hot distilled water by multistage flash distillation further comprises a reflux line 4. The input end of the reflux pipeline 4 is communicated with the raw material liquid output end of the Nth-stage flash evaporator 3, and the output end of the reflux pipeline 4 is communicated with the raw material liquid input end of the Mth-stage condenser 1; wherein N is more than or equal to 2, and N is more than M and more than or equal to 1.
In one embodiment, the apparatus for producing hot distilled water by multi-stage flash evaporation comprises a four-stage flash evaporator 3. The input of backflow pipeline 4 communicates with the raw material liquid output of fourth stage flash vessel 3, and the output of backflow pipeline 4 can communicate with 1 raw material liquid input of third stage condenser, can communicate with 1 raw material liquid input of second stage condenser, can also communicate with 1 raw material liquid input of first stage condenser.
In some embodiments, the nth stage condenser 1 is provided with a cooling water input 11 and a cooling water output 12.
In some embodiments, each condenser 1 is provided with a distilled water collecting portion, and the distilled water collecting portions of the N-stage condensers 1 are sequentially communicated to heat distilled water step by step, so as to generate hot distilled water at a preset temperature, and then the hot distilled water is discharged from the distilled water output end of the first-stage condenser 1.
Specifically, each condenser 1 is provided with a distilled water collecting portion. The steam is liquefied into distilled water in the process of preheating the raw material liquid, and the distilled water is collected in the distilled water collecting part. Distilled water flows into the condenser 1 through a distilled water input end of the condenser 1 and flows out of the condenser 1 through a distilled water output end. The distilled water output end of the Nth-level condenser 1 is communicated with the distilled water input end of the (N-1) th-level condenser 1, the distilled water output end of the (M + 1) th-level condenser 1 is communicated with the distilled water input end of the (M) th-level condenser 1, and the distilled water output end of the second-level condenser 1 is communicated with the distilled water input end of the first-level condenser 1. Distilled water generated by each condenser 1 sequentially flows to a distilled water collecting part of the first-stage condenser 1 to realize heating step by step, and finally, hot distilled water generated at a preset temperature is discharged from a distilled water output end of the first-stage condenser 1.
In one embodiment, the apparatus for preparing hot distilled water by multi-stage flash evaporation comprises a four-stage condenser 1. The distilled water output end of the fourth-stage condenser 1 is communicated with the distilled water input end of the third-stage condenser 1, the distilled water output end of the third-stage condenser 1 is communicated with the distilled water input end of the second-stage condenser 1, the distilled water output end of the second-stage condenser 1 is communicated with the distilled water input end of the first-stage condenser 1, and the generated hot distilled water is discharged from the distilled water output end of the first-stage condenser 1.
In another embodiment, the apparatus for producing hot distilled water by multi-stage flash evaporation comprises a two-stage condenser 1. The distilled water output end of the second-stage condenser 1 is communicated with the distilled water input end of the first-stage condenser 1, and the generated hot distilled water is discharged from the distilled water output end of the first-stage condenser 1.
FIG. 4 is a schematic diagram showing the structure of a fourth multi-stage flash distillation apparatus for producing hot distilled water according to the present invention.
In some embodiments, as shown in fig. 4, each condenser 1 is provided with a distilled water collecting portion, and the distilled water output ends of the distilled water collecting portions of all the condensers 1 are collected to the distilled water output end of the distilled water collecting portion of the first-stage condenser 1 and then discharged, so as to heat the generated distilled water step by step and generate hot distilled water at a preset temperature.
Specifically, the distilled water output end of the nth-stage condenser 1, the distilled water output end of the nth-1 st-stage condenser 1 and the distilled water output end of the mth-stage condenser 1 are converged at the distilled water output end of the first-stage condenser 1, and are used for gradually heating the distilled water generated by each condenser 1.
In one embodiment, the apparatus for preparing hot distilled water by multi-stage flash evaporation comprises a four-stage condenser 1. And the distilled water output end of the fourth-stage condenser 1, the distilled water output end of the third-stage condenser 1 and the distilled water output end of the second-stage condenser 1 are converged at the distilled water output end of the first-stage condenser 1.
In another embodiment, the apparatus for producing hot distilled water by multi-stage flash evaporation comprises a two-stage condenser 1. The distilled water output end of the second-stage condenser 1 and the distilled water output end of the first-stage condenser 1.
FIG. 5 is a schematic diagram of an apparatus for producing hot distilled water by a fifth multi-stage flash evaporation according to the present invention.
In some embodiments, as shown in fig. 5, the condenser 1 and the flash evaporator 3 in the same stage may not be disposed in the same housing, and the water vapor output end of the flash evaporator 3 in the same stage is communicated with the water vapor input end of the condenser 1 through a pipeline.
FIG. 6 is a schematic diagram of a sixth multistage flash apparatus for producing hot distilled water according to the present invention.
In some embodiments, as shown in fig. 6, the apparatus for preparing hot distilled water by multi-stage flash evaporation further comprises an N-stage distilled water heater 5; the distilled water input end of the Nth-stage distilled water heater 5 is communicated with the distilled water output end of the Nth-stage condenser 1; the hot distilled water output end of the Nth stage distilled water heater 5 is communicated with the hot distilled water input end of the Mth stage distilled water heater 5; the hot distilled water output end of the M-stage distilled water heater 5 is communicated with the hot distilled water input end of the first-stage distilled water heater 5; the distilled water output end of the M-stage condenser 1 is communicated with the hot distilled water input end of the M-1-stage distilled water heater 5; the distilled water output end of the first-stage condenser 1 and the hot distilled water output end of the first-stage distilled water heater 5 are respectively communicated with the input end of a hot distilled water discharge pipeline, and the discharge end of the hot distilled water discharge pipeline is communicated with a heating pipeline; the steam input end of the Mth-stage distilled water heater 5 is communicated with the steam output end of the Mth-stage flash evaporator 3 and is used for heating hot distilled water; the steam input end of the first-stage distilled water heater 5 is communicated with the steam output end of the first-stage flash evaporator 3, wherein N is more than M and more than 1.
Specifically, N-stage distilled water heaters 5 are sequentially communicated, the N-stage distilled water heaters 5 are provided with a distilled water input end and a hot distilled water output end, except for the N-stage distilled water heater 5, the other distilled water heaters 5 are provided with hot distilled water input ends for further heating the hot distilled water heated upstream, and finally the hot distilled water heated by the first distilled water heater 5 is discharged from the hot distilled water discharge end of the first distilled water heater 5 to a hot distilled water discharge pipeline, and is communicated with a heating pipeline through the hot distilled water discharge pipeline for heating residents, except for the N-stage distilled water heater 5, the heat sources of the other distilled water heaters 5 are from flash evaporators 3, namely, steam obtained by the flash evaporators 3.
In some embodiments, the liquefied distilled water output end of the M-th stage distilled water heater 5 is communicated with the hot distilled water input end of the M-1 th stage distilled water heater 5, the liquefied distilled water output end of the first stage distilled water heater 5 and the hot distilled water output end of the first stage distilled water heater 5 are respectively communicated with the input end of a hot distilled water discharge pipeline, and the discharge end of the hot distilled water discharge pipeline is used for being communicated with a heating pipeline.
Specifically, the steam is liquefied into distilled water in the process of heating the distilled water, the distilled water heater 5 discharges the liquefied distilled water through an output end, the output end of the liquefied distilled water is converged with the distilled water output end thereof, and the liquefied distilled water is conveyed to the downstream distilled water heater 5 for heating. In some embodiments, the apparatus for producing hot distilled water by multi-stage flash evaporation further comprises a water discharge pipeline 6. The output end of the water discharge pipeline 6 is arranged at the downstream of the output end of the Nth-stage condenser 1 and at the upstream of the output end of the return pipeline 4 and is used for discharging a part of raw material liquid.
In some embodiments, the feedstock heater 2 is a surface heater or a hybrid heater.
In some embodiments, the distilled water heater 5 is a surface heater or a hybrid heater.
In some embodiments, a plurality of condensers 1 are disposed in the same housing, and a partition plate is disposed between adjacent condensers 1.
In some embodiments, multiple flash evaporators 3 are disposed in the same housing, with baffles disposed between adjacent flash evaporators 3.
In some embodiments, a plurality of condensers 1 are disposed in the same housing, a partition is disposed between adjacent condensers 1, and a plurality of flash evaporators 3 are disposed in the same housing, a partition is disposed between adjacent flash evaporators 3.
In some embodiments, the feed solution is seawater, river water, lake water, groundwater, sewage, wastewater, or reclaimed water.
According to another aspect of the invention, a method for preparing hot distilled water by multi-stage flash evaporation is provided, wherein the hot distilled water is obtained by using the device for preparing hot distilled water by multi-stage flash evaporation in any scheme.
The technical scheme of the invention has the following beneficial technical effects:
this application adopts the mode of multistage flash distillation to produce the hot distilled water, effectively utilizes the heat that the preparation pure water consumed, has reduced the cost of preparing the hot distilled water by a wide margin, and the hot distilled water temperature of production is higher, can satisfy the temperature demand of winter heating, can utilize the heat supply pipe network to carry fresh water to user's department, realizes heat and fresh water's coproduction and simultaneously delivers, can reduce conveying cost by a wide margin.
The invention has been described above with reference to embodiments thereof. However, these examples are for illustrative purposes only and are not intended to limit the scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof. Various alternatives and modifications can be devised by those skilled in the art without departing from the scope of the invention, and these alternatives and modifications are intended to be within the scope of the invention.
Claims (10)
1. An apparatus for preparing hot distilled water by multistage flash evaporation, which is characterized by comprising:
an N-stage condenser (1);
the raw material liquid input end of the raw material liquid heater (2) is communicated with the raw material liquid output end of the N-level condenser (1) and is used for heating the raw material liquid;
the raw material liquid input end of the N-stage flash evaporator (3) is communicated with the raw material liquid output end of the raw material liquid heater (2);
the steam output end of the Mth-stage flash evaporator (3) is communicated with the steam input end of the Mth-stage condenser (1), and the flashed steam enters the condenser to preheat the raw material liquid and generate distilled water; n is more than or equal to 2, and N is more than or equal to M is more than or equal to 1;
and the distilled water generated by each condenser (1) is collected at the output end of the condenser (1) with the highest pressure and then discharged.
2. The apparatus of claim 1,
n level condenser (1) communicates in proper order, is used for right raw materials liquid preheats step by step, raw materials liquid is from the Nth level the raw materials liquid input of condenser (1) is imported, the first order the raw materials liquid output of condenser (1) with the raw materials liquid input of raw materials liquid heater (2) communicates.
3. The apparatus of claim 1,
the raw material liquid output end of the N-stage condenser (1) is respectively communicated with the raw material liquid input end of the raw material liquid heater (2); and the raw material liquid input ends of the N-stage condensers (1) are converged at the input end of the Nth-stage condenser (1).
4. The apparatus of claim 1,
n level flash vessel (3) communicate in proper order, it is right to be used for the raw materials liquid carries out flash distillation step by step, first order the raw materials liquid input of flash vessel (3) with the raw materials liquid output of raw materials liquid heater (2) communicates, after the flash distillation raw materials liquid is followed the Nth level the output of flash vessel (3) is discharged.
5. The apparatus of claim 1,
and the raw material liquid input end of the N-level flash evaporator (3) is respectively communicated with the raw material liquid output end of the raw material liquid heater (2), and the raw material liquid output end of the N-level flash evaporator (3) is converged at the output end of the N-level flash evaporator (1).
6. The apparatus of claim 1, further comprising:
the input end of the reflux pipeline (4) is communicated with the raw material liquid output end of the flash evaporator (3) of the Nth stage, and the output end of the reflux pipeline (4) is communicated with the raw material liquid input end of the condenser (1) of the Mth stage; wherein N is more than or equal to 2, and N is more than M and more than or equal to 1.
7. The apparatus of claim 1, further comprising:
an N-stage distilled water heater (5);
the distilled water input end of the N-th stage of the distilled water heater (5) is communicated with the distilled water output end of the N-th stage of the condenser (1);
the hot distilled water output end of the N-th stage of the distilled water heater (5) is communicated with the hot distilled water input end of the M-th stage of the distilled water heater (5);
the hot distilled water output end of the M-stage distilled water heater (5) is communicated with the hot distilled water input end of the first-stage distilled water heater (5);
the distilled water output end of the M-th stage of the condenser (1) is communicated with the hot distilled water input end of the M-1-th stage of the distilled water heater (5);
a distilled water output end of the first-stage condenser (1) and a hot distilled water output end of the first-stage distilled water heater (5) are respectively communicated with an input end of a hot distilled water discharge pipeline, and a discharge end of the hot distilled water discharge pipeline is communicated with a heating pipeline;
the steam input end of the M-th stage of the distilled water heater (5) is communicated with the steam output end of the M-th stage of the flash evaporator (3) and is used for further heating the hot distilled water;
the steam input end of the first-stage distilled water heater (5) is communicated with the steam output end of the first-stage flash evaporator (3), wherein N is more than M and more than 1.
8. The apparatus according to any one of claims 1 to 7,
every condenser (1) is provided with the distilled water and collects the portion, N the distilled water of condenser (1) collects the portion and communicates in proper order, is used for right the distilled water heats step by step, produces the thermal distillation water of predetermineeing the temperature after from the first order the distilled water output of condenser (1) is discharged.
9. The apparatus according to any one of claims 1 to 7,
each condenser (1) is provided with a distilled water collecting part, and distilled water output ends of the distilled water collecting parts of all the condensers (1) are collected at a distilled water output end of the distilled water collecting part of the condenser (1) of the first stage and then discharged to generate hot distilled water at a preset temperature.
10. A method for preparing hot distilled water by multi-stage flash evaporation is characterized in that,
hot distilled water is obtained by using the apparatus for producing hot distilled water by multistage flash evaporation as claimed in any one of claims 1 to 9.
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| CN202010797933.3A Active CN112047432B (en) | 2020-06-19 | 2020-08-10 | Hot and fresh water preparation device and method and heat supply pipe network |
| CN202021648817.7U Active CN212403523U (en) | 2020-06-19 | 2020-08-10 | Preparation device of hot purified water |
| CN202010803250.4A Pending CN112010381A (en) | 2020-06-19 | 2020-08-11 | Device and method for preparing hot distilled water through multistage flash evaporation |
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| CN112010380B (en) | 2023-12-01 |
| CN112047432B (en) | 2022-09-27 |
| CN112010380A (en) | 2020-12-01 |
| CN212269518U (en) | 2021-01-01 |
| CN212403523U (en) | 2021-01-26 |
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