CN213357008U - Distilled water preparation facilities - Google Patents

Distilled water preparation facilities Download PDF

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Publication number
CN213357008U
CN213357008U CN202021645050.2U CN202021645050U CN213357008U CN 213357008 U CN213357008 U CN 213357008U CN 202021645050 U CN202021645050 U CN 202021645050U CN 213357008 U CN213357008 U CN 213357008U
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stage
outlet
inlet
communicated
evaporator
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付林
张世钢
张弘
李自勇
江亿
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Beijing Qingjian Energy Technology Co Ltd
Tsinghua University
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Beijing Qingjian Energy Technology Co Ltd
Tsinghua University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/002Construction details of the apparatus
    • C02F2201/007Modular design
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/10Energy recovery

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  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)

Abstract

A distilled water preparing apparatus comprising: each stage of evaporator comprises a steam condensate outlet; the condenser comprises a condensed water inlet and a condensed water outlet; an external low-temperature water pipeline for fully absorbing the heat generated by the N-stage evaporator by using external low-temperature water; each stage of heater in each group of multi-stage heaters comprises a condensed water inlet, a condensed water outlet, a hot distilled water inlet and a hot distilled water outlet, a shell of the heater, the condensed water inlet of the heater or the condensed water outlet of the heater are provided with steam condensed water inlets, and each heater in the Q groups of multi-stage heaters corresponds to the second-stage evaporator to the N-stage evaporator in the N-stage evaporator one by one; wherein N is more than or equal to 2, and N and Q are integers. The device produces the pure water while supplying heat, realizes the coproduction and the sending of heat and fresh water, effectively utilizes the heat consumed by preparing the pure water, and greatly reduces the cost for preparing the pure water.

Description

Distilled water preparation facilities
Technical Field
The utility model belongs to sea water desalination and central heating field especially relate to a distilled water preparation facilities.
Background
With the rapid development of the economic society of China and the continuous promotion of the urbanization process, the shortage of water resources becomes an important factor for restricting the sustainable development of the social economy of China. The per capita water resource amount of China is only one fourth of the per capita water resource amount of the world, and is one of the most scarce countries of the per capita water resource of the world. Seawater desalination is an effective means for increasing water resource from the source, is an important approach and strategic selection for solving the water resource shortage in China, and is also a necessary requirement for ensuring national safety and sustainable development. The seawater desalination technology is developed 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, and how to greatly reduce the running energy cost is urgent for the development of the technologies.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a distilled water preparation facilities is with the cost that reduces the preparation pure water and improve heat utilization rate.
(II) technical scheme
In order to solve the above problem, a first aspect of the present invention provides a distilled water preparing apparatus, comprising: n stages of evaporators, each stage of evaporator comprises a steam condensate outlet; the condenser comprises a condensed water inlet and a condensed water outlet; an external low-temperature water pipeline for fully absorbing the heat generated by the N-stage evaporator by using external low-temperature water; each stage of heater in each group of multi-stage heaters comprises a condensed water inlet, a condensed water outlet, a hot distilled water inlet and a hot distilled water outlet, a shell of the heater, the condensed water inlet of the heater or the condensed water outlet of the heater are provided with steam condensed water inlets, and each heater in the Q groups of multi-stage heaters corresponds to the second-stage evaporator to the N-stage evaporator in the N-stage evaporator one by one; the steam condensate outlet of each of the second-stage evaporator to the Nth-stage evaporator of the N-stage evaporator is communicated with the steam condensate inlet of the corresponding heater; a condensed water inlet of the condenser is communicated with a condensed water outlet of a first-stage heater of a first group of multi-stage heaters in the Q groups of multi-stage heaters, and a condensed water outlet of the condenser is communicated with a hot distilled water inlet of the first-stage heater of the first group of multi-stage heaters in the Q groups of multi-stage heaters; a hot distilled water outlet of a heater at the tail end of the Q group of multi-stage heaters is communicated with a heat supply pipe network; wherein N is more than or equal to 2, and N and Q are integers.
Further, when Q is more than or equal to 2; and a condensed water outlet of a first-stage heater in each group of the Q group of the multi-stage heaters to the second-stage heater in each group of the Q group of the multi-stage heaters is communicated with a hot distilled water pipeline of the group of the heaters.
Furthermore, the condensed water outlets of the other heaters except the first-stage heater in each group of multi-stage heaters in the Q groups of multi-stage heaters are communicated with the condensed water inlet of the previous-stage heater, and the hot distilled water inlets of the other heaters except the first-stage heater in each group of multi-stage heaters in the Q groups of multi-stage heaters are communicated with the hot distilled water outlet of the previous-stage heater.
Further, the condenser further includes: an external fresh water inlet; the external fresh water inlet is communicated with the external low-temperature water pipeline, the low-temperature fresh water in the external low-temperature water pipeline is introduced into the condenser, and the heat energy of the steam generated by the first-stage evaporator of the N-stage evaporator is fully absorbed by the external low-temperature fresh water.
Further, still include: an N-grade low-temperature heat exchanger; the N-stage low-temperature heat exchangers and the N-stage evaporators are arranged in a one-to-one correspondence manner; each grade cryogenic heat exchanger in N grade cryogenic heat exchanger all includes: each stage of evaporator also comprises a secondary steam outlet, and each of the Q groups of multi-stage heaters comprises a condensed water pipeline communication inlet; the low-temperature water inlet of a first-stage low-temperature heat exchanger in the N-stage low-temperature heat exchangers is communicated with the external low-temperature water pipeline, the low-temperature water inlet of a P-th-stage low-temperature heat exchanger in the N-stage low-temperature heat exchangers is communicated with the low-temperature water outlet of a previous-stage low-temperature heat exchanger, the steam inlet of the P-th-stage low-temperature heat exchanger is communicated with the secondary steam outlet of a P-th-stage evaporator, the condensate water outlet of the P-th-stage low-temperature heat exchanger is communicated with the condensate water pipeline inlet of the Q-group multi-stage heater, the condensate water outlet of the N-stage low-temperature heat exchanger is communicated with a heat supply.
Further, each stage of the evaporator further comprises a secondary steam outlet, a heating steam inlet, a concentrated liquid outlet and a flash liquid inlet, and each heater further comprises: a heating steam inlet; and a secondary steam outlet of an S-th evaporator in the N-th evaporator is respectively communicated with a heating steam inlet of the S-1-th evaporator and a heating steam inlet of a heater corresponding to the S-th evaporator, a concentrated solution outlet of the S-th evaporator is communicated with a flash evaporation solution inlet of the S-1-th evaporator, wherein N is more than or equal to S and is more than or equal to 2, and S is an integer.
Further, still include: the system comprises N-1 stages of preheaters, wherein each stage of preheater comprises a preheating liquid inlet, a preheating liquid outlet, a steam inlet and a condensed water outlet; each stage of preheater in the N-1 stage of preheater is arranged corresponding to one heater; the preheating liquid outlet of the N-1 stage preheater is communicated with the liquid inlet to be evaporated of the N-1 stage evaporator, the steam inlet of the T-stage preheater is communicated with the secondary steam outlet of the T-stage evaporator, the condensed water outlet of the T-stage preheater is communicated with the shell of the heater corresponding to the condensed water outlet or the condensed water inlet, the preheating liquid inlet of the T-stage preheater is communicated with the preheating liquid outlet of the T-1 stage preheater, the preheating liquid inlet of the first stage preheater is communicated with the outlet of the cooling liquid pipeline of the condenser, wherein N-1 is more than or equal to T and more than or equal to 2, and T is an integer.
Further, still include: and the cooling liquid direct discharging pipeline is communicated with a cooling liquid pipeline outlet of the condenser and is used for adjusting the pure hot distilled water flow of a hot distilled water outlet of the Q-th group of tail end heaters.
Further, still include: the heat exchanger comprises a heat medium inlet and a cold medium outlet, the evaporator further comprises a concentrated liquid outlet, and the condenser further comprises a cooling liquid pipeline inlet; and a hot medium inlet of the heat exchanger is communicated with a concentrated solution outlet of the first-stage evaporator, and a cold medium outlet of the heat exchanger is communicated with a cooling liquid pipeline inlet of the condenser.
Further, hot distilled water inlets of the other heaters except the first group of first-stage heaters in the Q groups of multi-stage heaters are communicated with a hot distilled water outlet of the previous stage.
Further, the heat exchanger is a dividing wall type heat exchanger.
Further, still include: and the air extraction device is used for extracting air from the evaporator and the condenser.
(III) advantageous effects
The above technical scheme of the utility model has following profitable technological effect:
the device of the utility model combines the pure water preparation and the centralized heating, produces the pure water while supplying heat, and utilizes the heating pipe network to convey the fresh water to the urban area, realizes the simultaneous production and the simultaneous delivery of the heat and the fresh water, effectively utilizes the heat consumed by the pure water preparation, and obtains the pure water without extra energy consumption, thereby greatly reducing the cost of preparing the pure water; and above-mentioned device utilizes heat supply pipe network to carry the pure water of making to the urban district, has reduced conveying cost by a wide margin.
Drawings
FIG. 1 is a schematic structural view of a distilled water preparing apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a distilled water preparing apparatus according to the second embodiment of the present invention;
FIG. 3 is a schematic view of a pipeline connection structure of a local heater according to an embodiment of the present invention;
FIG. 4 is a schematic structural view of a distilled water preparing apparatus according to a third embodiment of the present invention;
FIG. 5 is a schematic structural view of a distilled water preparing apparatus according to a fourth embodiment of the present invention;
FIG. 6 is a schematic structural view of a distilled water preparing apparatus according to the fifth embodiment of the present invention;
FIG. 7 is a schematic structural view of a distilled water preparing apparatus according to the sixth embodiment of the present invention;
FIG. 8 is a schematic structural view of a distilled water preparing apparatus according to a seventh embodiment of the present invention;
FIG. 9 is a schematic structural view of a distilled water preparing apparatus according to an eighth embodiment of the present invention;
fig. 10 is a schematic structural view of a distilled water preparing apparatus according to the ninth embodiment of the present invention.
Reference numerals:
1: an evaporator; 2: a condenser; 3: a heater; 4: a preheater; 5: a dividing wall type heat exchanger; 1-1: a flash liquid inlet; 1-2: a concentrated solution outlet; 1-3: a heating steam inlet; 1-4: a steam condensate outlet; 1-5: a secondary steam outlet; 2-1: a coolant line inlet; 2-2: a coolant line outlet; 2-3: a steam inlet; 2-4: a condensate outlet; 2-5: a condensate inlet; 2-6: an external fresh water inlet; 3-1: a hot distilled water inlet; 3-2: a hot distilled water outlet; 3-3: a steam condensate inlet; 3-4: a condensate outlet; 3-5: a condensate inlet; 3-6: a water condensation interface; 3-a: a condensate outlet pipeline; 3-b: a condensate inlet pipeline; 4-1: a preheating liquid inlet; 4-2: a preheated liquid outlet; 4-3: a steam inlet; 4-4: a condensed water outlet; 5-1: a cold medium inlet; 5-2: a cold medium outlet; 5-3: a heat medium inlet; 5-4: a thermal medium outlet; 6: a coolant straight-discharge pipeline; 7-1: a low temperature water inlet; 7-2: a low-temperature water outlet; 7-3: a steam inlet; 7-4: and a condensed water outlet.
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 detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative 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.
It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "first", "second" and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
In a first aspect of the embodiments of the present invention, there is provided a distilled water preparing apparatus, including: each stage of evaporator comprises a steam condensate outlet; the condenser comprises a condensed water inlet and a condensed water outlet; the external low-temperature water pipeline is used for fully absorbing heat generated by the N-stage evaporator by using external low-temperature water; each stage of heater in each group of multi-stage heaters comprises a condensed water inlet, a condensed water outlet, a hot distilled water inlet and a hot distilled water outlet, a shell of the heater, the condensed water inlet of the heater or the condensed water outlet of the heater are provided with steam condensed water inlets, and each heater in the Q groups of multi-stage heaters corresponds to the second-stage evaporator to the N-stage evaporator in the N-stage evaporator one by one; the one-to-one correspondence means that one heater only corresponds to one evaporator, and a steam condensate outlet of each of the second-stage evaporator to the Nth-stage evaporator of the N-stage evaporator is communicated with a steam condensate inlet of the corresponding heater; a condensed water inlet of the condenser is communicated with a condensed water outlet of a first-stage heater of a first group of multi-stage heaters in the Q groups of multi-stage heaters, and a condensed water outlet of the condenser is communicated with a hot distilled water inlet of the first-stage heater of the first group of multi-stage heaters in the Q groups of multi-stage heaters; a hot distilled water outlet of a heater at the tail end of the Q group of multi-stage heaters is communicated with a heat supply pipe network; wherein N is more than or equal to 2, and N and Q are integers.
Optionally, when Q is more than or equal to 2; the condensed water outlet of the first stage heater in each group of the Q group of the multistage heaters from the second group of the multistage heaters to the Q group of the multistage heaters is communicated with the hot distilled water pipeline of the group of the heaters.
Optionally, the condensed water outlets of the other heaters except the first-stage heater in each group of the Q groups of the multi-stage heaters are communicated with the condensed water inlet of the previous-stage heater, and the hot distilled water inlets of the other heaters except the first-stage heater in each group of the Q groups of the multi-stage heaters are communicated with the hot distilled water outlet of the previous-stage heater.
Optionally, the condenser further includes: an external fresh water inlet; the external fresh water inlet is communicated with the external low-temperature water pipeline, the low-temperature fresh water in the external low-temperature water pipeline is introduced into the condenser, and the heat energy of the steam generated by the first-stage evaporator of the N-stage evaporator is fully absorbed by the external low-temperature fresh water.
Optionally, the method further includes: an N-grade low-temperature heat exchanger; the N-stage low-temperature heat exchangers and the N-stage evaporators are arranged in a one-to-one correspondence manner; each grade cryogenic heat exchanger in N grade cryogenic heat exchanger all includes: each stage of evaporator also comprises a secondary steam outlet, and each of the Q groups of multi-stage heaters comprises a condensed water pipeline communication inlet; the low-temperature water inlet of a first-stage low-temperature heat exchanger in the N-stage low-temperature heat exchangers is communicated with the external low-temperature water pipeline, the low-temperature water inlet of a P-th-stage low-temperature heat exchanger in the N-stage low-temperature heat exchangers is communicated with the low-temperature water outlet of a previous-stage low-temperature heat exchanger, the steam inlet of the P-th-stage low-temperature heat exchanger is communicated with the secondary steam outlet of a P-th-stage evaporator, the condensate water outlet of the P-th-stage low-temperature heat exchanger is communicated with the condensate water pipeline inlet of the Q-group multi-stage heater, the condensate water outlet of the N-stage low-temperature heat exchanger is communicated with a heat supply.
Optionally, each stage of evaporator further includes a secondary steam outlet, a heating steam inlet, a concentrated solution outlet, and a flash solution inlet, and each heater further includes: a heating steam inlet; and a secondary steam outlet of an S-th evaporator in the N-stage evaporators is respectively communicated with a heating steam inlet of the S-1-th evaporator and a heating steam inlet of a corresponding heater, a concentrated solution outlet of the S-th evaporator is communicated with a flash evaporation solution inlet of the S-1-th evaporator, wherein N is more than or equal to S is more than or equal to 2, and S is an integer.
Optionally, the method further includes: the system comprises N-1 stages of preheaters, wherein each stage of preheater comprises a preheating liquid inlet, a preheating liquid outlet, a steam inlet and a condensed water outlet; each stage of preheater in the N-1 stage of preheater is arranged corresponding to one heater; the preheating liquid outlet of the N-1 stage preheater is communicated with the liquid inlet to be evaporated of the N-1 stage evaporator, the steam inlet of the T-stage preheater is communicated with the secondary steam outlet of the T-stage evaporator, the condensed water outlet of the T-stage preheater is communicated with the shell of the heater corresponding to the condensed water outlet or the condensed water inlet, the preheating liquid inlet of the T-stage preheater is communicated with the preheating liquid outlet of the T-1 stage preheater, the preheating liquid inlet of the first stage preheater is communicated with the cooling liquid pipeline outlet of the condenser, wherein N-1 is more than or equal to T and more than or equal to 2, and T is an integer.
Optionally, the method further includes: and the cooling liquid direct discharging pipeline is communicated with a cooling liquid pipeline outlet of the condenser and is used for adjusting the flow of pure hot distilled water at a hot distilled water outlet of the Q-th group of tail end heaters.
Optionally, the method further includes: the heat exchanger comprises a heat medium inlet and a cold medium outlet, the evaporator further comprises a concentrated liquid outlet, and the condenser further comprises a cooling liquid pipeline inlet; the hot medium inlet of the heat exchanger is communicated with the concentrated solution outlet of the first-stage evaporator, and the cold medium outlet of the heat exchanger is communicated with the cooling liquid pipeline inlet of the condenser.
Optionally, the hot distilled water inlets of the other heaters except the first group of first-stage heaters in the Q groups of multi-stage heaters are communicated with the hot distilled water outlet of the previous stage.
Optionally, the heat exchanger is a dividing wall heat exchanger.
Optionally, the method further includes: and the air extraction device is used for extracting air from the evaporator and the condenser.
Optionally, the liquid in the above embodiment is at least one of the following: sea water, river water, lake water, groundwater, sewage, wastewater, and reclaimed water.
Example 1
As shown in fig. 1, in the present embodiment, there is provided a distilled water preparing apparatus including: n-stage evaporators 1, wherein each stage of evaporator comprises a steam condensate outlet 1-4; the condenser 2 comprises a condensed water inlet 2-5 and a condensed water outlet 2-4; q group multiple stage heater 3, condenser 2 further includes: 2-6 of an external fresh water inlet; the external fresh water inlet 2-6 is communicated with an external fresh water pipeline, external fresh water is introduced into the condenser 2, the external fresh water is utilized to fully absorb heat energy of steam generated by a first-stage evaporator of the N-stage evaporator, each stage of heater 3 in each group of multi-stage heaters 3 comprises a condensed water inlet 3-5, a condensed water outlet 3-4, a hot distilled water inlet 3-1 and a hot distilled water outlet 3-2, a steam condensed water inlet 3-3 is arranged on a shell of the heater, the condensed water inlet 3-5 of the heater or the condensed water outlet 3-4 of the heater, and each heater in the Q group of multi-stage heaters 3 corresponds to the second-stage evaporator 1 to the N-stage evaporator 1 in the N-stage evaporator 1 one by one; the steam condensate outlet 1-4 of each of the second-stage evaporator 1 to the Nth-stage evaporator 1 of the N-stage evaporator 1 is communicated with the steam condensate inlet 3-3 of the corresponding heater; a hot distilled water outlet 3-2 of a tail end heater 3 in the Q group of multi-stage heaters 3 is used for being communicated with a heat supply pipe network; a condensed water inlet 2-5 of the condenser 2 is communicated with a condensed water outlet 3-4 of a first-stage heater 3 of a first group of multi-stage heaters 3 in the Q groups of multi-stage heaters 3, and a condensed water outlet 2-4 of the condenser 2 is communicated with a hot distilled water inlet 3-1 of the first-stage heater 3 of the first group of multi-stage heaters 3 in the Q groups of multi-stage heaters 3; wherein N is more than or equal to 2, and N and Q are integers.
Example 2
As shown in FIGS. 2 to 3, in the present example, on the basis of example 1, when Q.gtoreq.2; the condensed water outlet 3-4 of the first stage heater 3 in each of the second group of multi-stage heaters 3 to the Q group of multi-stage heaters 3 in each of the group of multi-stage heaters 3 is communicated with the hot distilled water pipeline of the group of heaters 3, and may be the hot distilled water inlet 3-1 of the group of first stage heaters 3, the hot distilled water outlet 3-2 of the group of first stage heaters 3, or any position of the pipeline between the hot distilled water outlet 3-2 and the hot distilled water inlet 3-1 of the next stage, and the condenser 2 further includes: 2-6 of an external fresh water inlet; the external fresh water inlet 2-6 is communicated with an external fresh water pipeline, external fresh water is introduced into the condenser 2, the external fresh water is utilized to fully absorb the heat energy of the steam generated by the first-stage evaporator of the N-stage evaporator, each stage of evaporator 1 further comprises a secondary steam outlet 1-5, a heating steam inlet 1-3, a concentrated solution outlet 1-2 and a flash evaporation liquid inlet 1-1, and each heater 3 further comprises: a heating steam inlet; the secondary steam outlet 1-5 of the S-th evaporator 1 in the N-stage evaporator 1 is respectively communicated with the heating steam inlet 1-3 of the S-1-th evaporator 1 and the heating steam inlet of the corresponding heater 3, the concentrated solution outlet 1-2 of the S-th evaporator 1 is communicated with the flash evaporation solution inlet 1-1 of the S-1-th evaporator 1, wherein N is more than or equal to S is more than or equal to 2, and S is an integer.
Example 3
As shown in fig. 4, in this embodiment, an N-stage low-temperature heat exchanger 7 is added on the basis of embodiment 1, and the external fresh water inlets 2-6 of the condenser 2 are removed; the N-level low-temperature heat exchangers 7 are arranged in one-to-one correspondence with the N-level evaporators 1; each low-temperature heat exchanger 7 in N level low-temperature heat exchanger 7 all includes: the low-temperature water inlet 7-1, the low-temperature water outlet 7-2, the steam inlet 7-3 and the condensate water outlet 7-4 are arranged, each stage of evaporator further comprises a secondary steam outlet 1-5, and each group of multi-stage heaters 3 in the Q groups of multi-stage heaters 3 comprises a condensate water pipeline communicating inlet; the low-temperature water inlet 7-1 of the first-stage low-temperature heat exchanger 7 in the N-stage low-temperature heat exchanger 7 is communicated with an external low-temperature water pipeline, the low-temperature water inlet 7-1 of the P-th-stage low-temperature heat exchanger 7 in the N-stage low-temperature heat exchanger 7 is communicated with the low-temperature water outlet 7-2 of the previous-stage low-temperature heat exchanger, the steam inlet 7-3 of the P-th-stage low-temperature heat exchanger 7 is communicated with the secondary steam outlet 1-5 of the P-th-stage evaporator, the condensate water outlet 7-4 of the P-th-stage low-temperature heat exchanger 7 is communicated with the condensate water pipeline inlet of the Q-group multi-stage heater, and the condensate water outlet 7-4 of the N-stage low-temperature heat exchanger 7 is communicated. The water flowing through the low temperature heat exchanger 7 in this embodiment may be any one or a combination of seawater, river water, lake water, underground water, sewage, wastewater, and reclaimed water.
Example 4
As shown in FIG. 5, in the present embodiment, N-1 stages of preheaters 4 are added on the basis of embodiment 1, and each stage of preheater 4 comprises a preheating liquid inlet 4-1, a preheating liquid outlet 4-2, a steam inlet 4-3 and a condensed water outlet 4-4; each stage of preheater 4 in the N-1 stage of preheater 4 is arranged corresponding to one heater 3; a preheating liquid outlet 4-2 of an N-1 stage preheater 4 is communicated with a flash evaporation liquid inlet 1-1 of an N-stage evaporator, a steam inlet 4-3 of a T-stage preheater 4 is communicated with a secondary steam outlet 1-5 of a T-stage evaporator, a condensation water outlet 4-4 of the T-stage preheater 4 is communicated with a shell or a condensation water outlet or a condensation water inlet of a corresponding heater 3, a preheating liquid inlet 4-1 of the T-stage preheater is communicated with a preheating liquid outlet 4-2 of the T-1 stage preheater, a preheating liquid inlet 4-1 of the first stage preheater is communicated with a cooling liquid pipeline outlet 2-2 of a condenser 2, wherein N-1 is more than or equal to T and more than or equal to 2, and T is an integer.
Example 5
As shown in FIG. 6, in the present embodiment, N-1 stages of preheaters 4 are added on the basis of embodiment 3, and each stage of preheater 4 comprises a preheating liquid inlet 4-1, a preheating liquid outlet 4-2, a steam inlet 4-3 and a condensed water outlet 4-4; each stage of preheater 4 in the N-1 stage of preheater 4 is arranged corresponding to one heater 3; a preheating liquid outlet 4-2 of an N-1 stage preheater 4 is communicated with a flash evaporation liquid inlet 1-1 of an N-stage evaporator, a steam inlet 4-3 of a T-stage preheater 4 is communicated with a secondary steam outlet 1-5 of a T-stage evaporator, a condensation water outlet 4-4 of the T-stage preheater 4 is communicated with a shell or a condensation water outlet or a condensation water inlet of a corresponding heater 3, a preheating liquid inlet 4-1 of the T-stage preheater is communicated with a preheating liquid outlet 4-2 of the T-1 stage preheater, a preheating liquid inlet 4-1 of the first stage preheater is communicated with a cooling liquid pipeline outlet 2-2 of a condenser 2, wherein N-1 is more than or equal to T and more than or equal to 2, and T is an integer.
Example 6
As shown in FIG. 7, in this embodiment, a coolant straight line 6 is added to the embodiment 1, and is communicated with the coolant line outlet 2-2 of the condenser 2, for adjusting the flow rate of pure hot distilled water at the hot distilled water outlet 3-2 of the Nth stage heater 3.
Example 7
As shown in FIG. 8, in this embodiment, a coolant straight line 6 is added to the embodiment 3, and is communicated with the coolant line outlet 2-2 of the condenser 2, so as to adjust the flow rate of pure hot distilled water at the hot distilled water outlet 3-2 of the Nth stage heater 3.
Example 8
As shown in fig. 9, in the present embodiment, a heat exchanger 5 is added on the basis of embodiment 1, and includes a heat medium inlet 5-3 and a cold medium outlet 5-2, the evaporator 1 further includes a concentrated solution outlet 1-2, and the condenser 2 further includes a cooling solution pipeline inlet 2-1; a hot medium inlet 5-3 of the heat exchanger 5 is communicated with a concentrated solution outlet 1-2 of the first-stage evaporator 1, and a cold medium outlet 5-2 of the heat exchanger 5 is communicated with a cooling liquid pipeline inlet 2-1 of the condenser 2.
Example 9
As shown in fig. 10, in the present embodiment, a heat exchanger 5 is added on the basis of embodiment 3, and includes a heat medium inlet 5-3 and a cold medium outlet 5-2, the evaporator 1 further includes a concentrated solution outlet 1-2, and the condenser 2 further includes a cooling solution pipeline inlet 2-1; a hot medium inlet 5-3 of the heat exchanger 5 is communicated with a concentrated solution outlet 1-2 of the first-stage evaporator 1, and a cold medium outlet 5-2 of the heat exchanger 5 is communicated with a cooling liquid pipeline inlet 2-1 of the condenser 2.
The utility model aims at protecting a distilled water preparation device, include: each stage of evaporator comprises a steam condensate outlet; the condenser comprises a condensed water inlet and a condensed water outlet; the external low-temperature water pipeline is used for fully absorbing heat generated by the N-stage evaporator by using external low-temperature water; each stage of heater in each group of multi-stage heaters comprises a condensed water inlet, a condensed water outlet, a hot distilled water inlet and a hot distilled water outlet, a shell of the heater, the condensed water inlet of the heater or the condensed water outlet of the heater are provided with steam condensed water inlets, and each heater in the Q groups of multi-stage heaters corresponds to the second-stage evaporator to the N-stage evaporator in the N-stage evaporator one by one; the one-to-one correspondence means that one heater only corresponds to one evaporator, and a steam condensate outlet of each of the second-stage evaporator to the Nth-stage evaporator of the N-stage evaporator is communicated with a steam condensate inlet of the corresponding heater; a condensed water inlet of the condenser is communicated with a condensed water outlet of a first-stage heater of a first group of multi-stage heaters in the Q groups of multi-stage heaters, and a condensed water outlet of the condenser is communicated with a hot distilled water inlet of the first-stage heater of the first group of multi-stage heaters in the Q groups of multi-stage heaters; a hot distilled water outlet of a heater at the tail end of the Q group of multi-stage heaters is communicated with a heat supply pipe network; wherein N is more than or equal to 2, and N and Q are integers. The device combines the purified water preparation and the centralized heat supply, produces the purified water while supplying heat, and utilizes the heat supply pipe network to convey the fresh water to the urban area, thereby realizing the simultaneous production and delivery of heat and the fresh water, effectively utilizing the heat consumed by the purified water preparation, and obtaining the purified water without additional energy consumption, thereby greatly reducing the cost for preparing the purified water; and above-mentioned device utilizes heat supply pipe network to carry the pure water of making to the urban district, has reduced conveying cost by a wide margin.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims (10)

1. A distilled water producing apparatus, comprising:
n stages of evaporators, each stage of evaporator comprises a steam condensate outlet;
the condenser comprises a condensed water inlet and a condensed water outlet;
an external low-temperature water pipeline for fully absorbing the heat generated by the N-stage evaporator by using external low-temperature water;
each stage of heater in each group of multi-stage heaters comprises a condensed water inlet, a condensed water outlet, a hot distilled water inlet and a hot distilled water outlet, a shell of the heater, the condensed water inlet of the heater or the condensed water outlet of the heater are provided with steam condensed water inlets, and each heater in the Q groups of multi-stage heaters corresponds to the second-stage evaporator to the N-stage evaporator in the N-stage evaporator one by one;
the steam condensate outlet of each of the second-stage evaporator to the Nth-stage evaporator of the N-stage evaporator is communicated with the steam condensate inlet of the corresponding heater; a condensed water inlet of the condenser is communicated with a condensed water outlet of a first-stage heater of a first group of multi-stage heaters in the Q groups of multi-stage heaters, and a condensed water outlet of the condenser is communicated with a hot distilled water inlet of the first-stage heater of the first group of multi-stage heaters in the Q groups of multi-stage heaters; a hot distilled water outlet of a heater at the tail end of the Q group of multi-stage heaters is communicated with a heat supply pipe network; wherein N is more than or equal to 2, and N and Q are integers.
2. The device of claim 1, wherein when Q ≧ 2;
and a condensed water outlet of a first-stage heater in each group of the Q group of the multi-stage heaters to the second-stage heater in each group of the Q group of the multi-stage heaters is communicated with a hot distilled water pipeline of the group of the heaters.
3. The device according to claim 2, wherein the condensed water outlets of the heaters except the first stage heater in each group of the Q groups of the multi-stage heaters are communicated with the condensed water inlet of the previous stage heater, and the hot distilled water inlets of the heaters except the first stage heater in each group of the multi-stage heaters in the Q groups of the multi-stage heaters are communicated with the hot distilled water outlet of the previous stage heater.
4. The apparatus of claim 1, wherein the condenser further comprises: an external fresh water inlet;
the external fresh water inlet is communicated with the external low-temperature water pipeline, the low-temperature fresh water in the external low-temperature water pipeline is introduced into the condenser, and the heat energy of the steam generated by the first-stage evaporator of the N-stage evaporator is fully absorbed by the external low-temperature fresh water.
5. The apparatus of any of claims 1-4, further comprising: an N-grade low-temperature heat exchanger;
the N-stage low-temperature heat exchangers and the N-stage evaporators are arranged in a one-to-one correspondence manner;
each grade cryogenic heat exchanger in N grade cryogenic heat exchanger all includes: each stage of evaporator also comprises a secondary steam outlet, and each of the Q groups of multi-stage heaters comprises a condensed water pipeline communication inlet;
the low-temperature water inlet of a first-stage low-temperature heat exchanger in the N-stage low-temperature heat exchangers is communicated with the external low-temperature water pipeline, the low-temperature water inlet of a P-th-stage low-temperature heat exchanger in the N-stage low-temperature heat exchangers is communicated with the low-temperature water outlet of a previous-stage low-temperature heat exchanger, the steam inlet of the P-th-stage low-temperature heat exchanger is communicated with the secondary steam outlet of a P-th-stage evaporator, the condensate water outlet of the P-th-stage low-temperature heat exchanger is communicated with the condensate water pipeline inlet of the Q-group multi-stage heater, the condensate water outlet of the N-stage low-temperature heat exchanger is communicated with a heat supply.
6. The apparatus of claim 5, wherein each stage of the evaporator further comprises a secondary steam outlet, a heating steam inlet, a concentrate outlet, and a flash inlet, each of the heaters further comprising: a heating steam inlet;
and a secondary steam outlet of an S-th evaporator in the N-th evaporator is respectively communicated with a heating steam inlet of the S-1-th evaporator and a heating steam inlet of a heater corresponding to the S-th evaporator, a concentrated solution outlet of the S-th evaporator is communicated with a flash evaporation solution inlet of the S-1-th evaporator, wherein N is more than or equal to S and is more than or equal to 2, and S is an integer.
7. The apparatus of claim 5, further comprising:
the system comprises N-1 stages of preheaters, wherein each stage of preheater comprises a preheating liquid inlet, a preheating liquid outlet, a steam inlet and a condensed water outlet;
each stage of preheater in the N-1 stage of preheater is arranged corresponding to one heater;
the preheating liquid outlet of the N-1 stage preheater is communicated with the liquid inlet to be evaporated of the N-1 stage evaporator, the steam inlet of the T-stage preheater is communicated with the secondary steam outlet of the T-stage evaporator, the condensed water outlet of the T-stage preheater is communicated with the shell of the heater corresponding to the condensed water outlet or the condensed water inlet, the preheating liquid inlet of the T-stage preheater is communicated with the preheating liquid outlet of the T-1 stage preheater, the preheating liquid inlet of the first stage preheater is communicated with the outlet of the cooling liquid pipeline of the condenser, wherein N-1 is more than or equal to T and more than or equal to 2, and T is an integer.
8. The apparatus of claim 5, further comprising:
and the cooling liquid direct discharging pipeline is communicated with a cooling liquid pipeline outlet of the condenser and is used for adjusting the pure hot distilled water flow of a hot distilled water outlet of the Q-th group of tail end heaters.
9. The apparatus of claim 5, further comprising:
the heat exchanger comprises a heat medium inlet and a cold medium outlet, the evaporator further comprises a concentrated liquid outlet, and the condenser further comprises a cooling liquid pipeline inlet;
and a hot medium inlet of the heat exchanger is communicated with a concentrated solution outlet of the first-stage evaporator, and a cold medium outlet of the heat exchanger is communicated with a cooling liquid pipeline inlet of the condenser.
10. The apparatus of claim 1, wherein the hot distilled water inlets of the heaters except the first group of the first stage heaters in the Q groups of the multi-stage heaters are communicated with the hot distilled water outlet of the previous stage.
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CN202021645050.2U Active CN213357008U (en) 2020-06-05 2020-08-10 Distilled water preparation facilities
CN202010797144.XA Active CN112062187B (en) 2020-06-05 2020-08-10 Preparation device and preparation method of hot distilled water
CN202010814598.3A Active CN112062188B (en) 2020-06-05 2020-08-13 Multi-heat source hot distilled water preparation device, system and method
CN202010815755.2A Active CN112062189B (en) 2020-06-05 2020-08-14 Multistage multi-heat-source evaporation type hot fresh water preparation device and method and waste heat recovery system
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