CN105000610B - Transcritical air conditioner and seawater desalination co-production system - Google Patents
Transcritical air conditioner and seawater desalination co-production system Download PDFInfo
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- CN105000610B CN105000610B CN201510303887.6A CN201510303887A CN105000610B CN 105000610 B CN105000610 B CN 105000610B CN 201510303887 A CN201510303887 A CN 201510303887A CN 105000610 B CN105000610 B CN 105000610B
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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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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a transcritical air conditioner and seawater desalination co-production system which comprises a transcritical air conditioner with a refrigerating cycling unit and a low-temperature multi-effect distillation apparatus. The low-temperature multi-effect distillation apparatus comprises a multi-effect distillation unit, a fresh water collection pipeline used for collecting liquid fresh water and a concentrated wastewater external draining pipe used for collecting tail end concentrated seawater, an air cooler of the refrigerating cycling unit is divided into two or more sections in the flow direction of a refrigerating agent, and from a first-effect distillation unit body, all sections of the air cooler are sequentially connected into corresponding effect distillation unit bodies to serve as air-cooling modules. By means of the transcritical air conditioner and seawater desalination co-production system, the use ratio of the low-temperature multi-effect distillation apparatus on the exhaust heat generated by the transcritical air conditioner and the fresh water yield of the low-temperature multi-effect distillation apparatus are increased, and the air cooler of the transcritical air conditioner is directly installed inside distillation unit bodies of all effects, so that the whole system is more compact, and the whole size is reduced.
Description
Technical field
The present invention relates to desalination technology, more particularly to a kind of Trans-critical cycle air-conditioning and desalinization co-generation system.
Background technology
In recent years, China's domestic air conditioning becomes increasingly popular in city.Calendar year 2001 to 2013, China Domestic air conditioning market
Yield is incremented by with the trend of annual average compound growth rate 17.29%, and China's domestic air conditioning yield is 130,570,000 within 2013.In the summer
Season, its Main Function was to make room temperature lowering, and the condensation heat of air conditioning system is directly discharged in air when domestic air conditioner refrigerating, and
It is not used.Substantial amounts of condensation heat is discharged to atmospheric environment when refrigeration unit is run under air conditioning condition, usual condensation heat can
Up to 1.15～1.3 times of refrigerating capacity.Substantial amounts of condensation heat is directly discharged into air, loses in vain, causes larger energy waste,
Distributing and raising ambient temperature for these heats, causes serious environmental thermal pollution, so, for energy saving and guarantor
Retaining ring border, air conditioner afterheat is recycled and just seems necessary.
Trans-critical cycle air-conditioning, i.e. cold-producing medium using the material such as carbon dioxide, nitrous oxide air-conditioning, its core be a class across
Critical refrigeration cycle.The primary clustering of Trans-critical cycle kind of refrigeration cycle has regenerator, compressor, vaporizer, air cooler and expansion gear.
The operation principle of whole system is that the working medium Jing compressor of low-temp low-pressure compresses the gas for becoming High Temperature High Pressure, the gas of High Temperature High Pressure
Body enters air cooler heat exchange cooling, regenerator is entered after the working medium cooling of High Temperature High Pressure, with the low-temp low-pressure of evaporator outlet
Working medium exchanges heat, and High Temperature High Pressure working medium continues to be lowered the temperature, and the working medium of low-temp low-pressure is changed into overheated, and the high-pressure working medium after blood pressure lowering is passed through
The device reducing pressure by regulating flow such as electric expansion valve becomes the biphase refrigeration working medium of low-temp low-pressure, is exchanged heat with air into vaporizer,
It is compressed subsequently into compressor, forms a circulation.Exothermic process of the working medium in air cooler is one and has big temperature
The non-phase transformation exothermic process of sliding, generally reduces by 35 DEG C from 100 DEG C or so, and heat approximately linearly discharges.
Water is the primary demand for maintaining life and health, and the area that although earth has 71% is covered by water, but fresh water
Resource is extremely limited.At present global freshwater resources only account for the 2.5% of its total Water, wherein more than 70% is frozen in south
In the ice sheet of pole and the arctic, the alpine glacier and permafrost accumulated snow being difficult by is added, the freshwater resources for having 86% are difficult by.People
The freshwater resources that class really is able to utilize are the parts in rivers and lakes and subsoil water, only take up an area the 0.26% of ball total Water.
At present, there are 1/6 population, people's hydropenia about more than 1,000,000,000 in the whole world.Expert's estimation, will be more than 25 to world's hydropenia population in 2025
Hundred million.Again due on the earth fresh water be distributed in region, temporal lack of uniformity, and pollution of the mankind to water source, make fresh water
Available quantity is not only restricted, and drastically reduces.Water shortage problem has been the social sustainable of whole world facing
A difficult problem for development.Under this severe use water form and current conditions, the proposition of desalinization is greatly existing with using having
Sincere justice.
Desalinization refers to and the excess salt in water and mineral is removed the operation for obtaining fresh water, and it realizes that technology is main
There are the way of distillation, hyperfiltration, electroosmose process, freezing method etc..The way of distillation include multiple-effect distillation, multistage flash vaporization, Membrane Materials method,
Solar distilling method etc..The principle of the way of distillation be make sea water be heated vaporization, water vapour condensation and obtain fresh water, it have equipment letter
Single reliable, grime repellancy can it is good, be easy to maximize, aquifer yield and the advantages of using low grade heat energy, but the method is needed
Heat energy, and the gasification latent heat of water are externally supplied than larger, so energy consumption is higher.
At present, law technology relative maturity is distilled, low temperature multiple-effect distillation sea water desalting technology therein is that one kind has development very much
The desalination technology of prospect, has worldwide obtained wide application.Application No. 201110398281.7 it is special
Sharp document discloses a kind of low temperature multi-effect seawater desalting system, and it mainly includes that multigroup heat pipe-type multi-effect evaporator, steam spray
Device TVC, cooler, air water release device, steam-water separator, water ring vacuum pump, raw water pump, light pump, Steam Turbine Through IP Admission, steamer
Machine low pressure (LP) cylinder etc..The characteristics of invention is that the multi-effect evaporator is multigroup, using the heat transfer property of heat pipe, by steam
Cyclic steam and turbine low pressure cylinder steam discharge in ejector TVC injection coolers, makes cyclic steam and turbine low pressure cylinder row
Vapour is changed into the steam of higher quality and enters heat pipe evaporator, so as to improve evaporation of seawater efficiency.Meanwhile, the invention is utilized again
Inferior turbine low pressure cylinder steam discharge, improves the utilization rate of the energy and the efficiency of power plant, is produced by heat pipes heat
Steam improves the utilization rate of steam as the thermal source of later several groups of vaporizers.What is utilized due to the invention is inferior vapour
Turbine low pressure (LP) cylinder steam discharge, so it is in fact a kind of relatively large payable seawater desalination system.
The patent documentation of Application No. 201110174880.0 discloses a kind of industrial waste heat low-temperature multi-effect seawater desalting system
System, it includes that multiple-effect sea water evaporator, end effect condenser, charging sea water pipe, cooling water outlet pipe, cooling water flow through pipe, dense salt
Current outlet pipe, condensate delivery pipe, product water return duct, multiple spray equipments, multiple strong brines flow through pipe, multiple product current
Jing pipes etc..The invention is applied to industrial exhaust heat in low temperature multi-effect seawater desalting system, more than the high temperature that industrial user produces
Heat is converted into working steam as the energy by industrial exhaust heat boiler, and using this working steam low-temperature multiple-effect seawater desalination is carried out,
The product water that first evaporator is produced is back to industrial exhaust heat boiler, recycles, so as to reduce low-temperature multiple-effect seawater desalination
The water producing cost of system.Equally, the invention is also a kind of relatively large payable seawater desalination system.
Low temperature multi-effect seawater desalting system middle-size and small-size at present consumes one mostly due to obtaining stable used heat thermal source
The secondary energy, water producing cost is very high, although also have the device that researcher proposes using air conditioner heat to desalinize seawater, Application No.
200610124010.1 patent documentation disclose a kind of air conditioner refrigerating and sea water desalting integral device, it is including compressor, cold
Condenser, expansion valve, vaporizer, air-introduced machine, exhaust blower and spray system, the compressor is connected with condenser by pipeline, row
Blower fan is arranged on the side of condenser, is connected by expansion valve between condenser and vaporizer, and air-introduced machine is arranged on and condenser
The another side of relative vaporizer, and the air channel communicated with air-introduced machine is provided between condenser and vaporizer, the one of vaporizer
Side is provided with air inlet, and the spray system is arranged between condenser and exhaust blower.
Although said apparatus make use of the used heat of air-conditioning to carry out desalinization, but the temperature of waste heat that general air-conditioning is produced
Relatively low, typically only 40～50 DEG C, actual fresh water low yield, economy is extremely low, it is impossible to meet actual water supply application.
The content of the invention
The invention discloses a kind of Trans-critical cycle air-conditioning and desalinization co-generation system, using the temperature produced by Trans-critical cycle air-conditioning
The higher used heat of degree carries out low temperature multiple-effect distillation to produce fresh water, improves energy utilization rate, reduces the cost for desalinizing seawater,
Environmental thermal pollution is reduced, and fresh water yield is higher, with good economic benefit.
A kind of Trans-critical cycle air-conditioning and desalinization co-generation system, including the Trans-critical cycle air-conditioning with refrigerating cycle unit and
Low temperature multiple-effect distillation device, the low temperature multiple-effect distillation device includes that multi-effect distilling unit, the fresh water of collection liquid fresh water collect
The outer comb of density wastewater of pipeline and collection end concentrated seawater, the air cooler of the refrigerating cycle unit is along the flowing side of cold-producing medium
To being divided at least two sections, start each section of air cooler from the first effect distillation unit and be sequentially ingressed in correspondence effect distillation unit as air cooling
Module.
In the present invention, using Trans-critical cycle air-conditioning air cooler along cold-producing medium flow direction, temperature gradually reduces and releases
The characteristics of amplification quantity heat, load after being segmented in the correspondence effect distillation unit of low temperature multiple-effect distillation device as air cooling mould
Block, wherein corresponding effect is referred to：Corresponding temperature is reduced successively, i.e., each section air cooler drops successively along the flow direction temperature of cold-producing medium
Low correspondence low temperature multiple-effect distillation device increases temperature with effect number to be reduced successively, corresponds to install step by step, and above-mentioned setting improves low temperature
The utilization rate of the heat extraction that multiple-effect distillation device is generated to Trans-critical cycle air-conditioning；And the air cooler of Trans-critical cycle air-conditioning is loaded into each effect to steam
Unit is evaporated, so that system is integrally more compact, reduces overall volume.
Except the first effect distillation unit is distilled completely using external heat, its residual effect be designed with being passed through one imitate it is light
Water vapour is distilling the distillation module of sea water, it is preferred that each section of air cooler is arranged in the distillation module of the effect distillation unit that is located
Top.
In order to improve fresh water yield, it is preferred that the low temperature multiple-effect distillation device also includes condensation, and last imitates distillation list
The fresh water condenser of the fresh water steam of first output and the seawater preheating device of preheating sea water to be diluted, last effect distillation unit output
The temperature of fresh water steam be not higher than 20 DEG C；
The fresh water condenser includes fresh water steam channel and condensation water channel, the two ends connection of the condensation water channel the
One sea water inlet pipe and sea water drain pipe；
The seawater preheating device includes that connection fresh water collects the product water channel of pipeline, the concentrated seawater of the outer comb of connection density wastewater
Passage and sea water passage, the two ends of the sea water passage connect the second sea water inlet pipe and pre- hot sea water outlet pipe, the preheating
Sea water outlet pipe accesses the preheating sea intake of multi-effect distilling unit, is passed through the ocean temperature of the second sea water inlet pipe higher than being passed through the
The ocean temperature of one sea water inlet pipe.
By last effect fresh water steam condensation and sea water to be diluted preheating by two different heat exchange units with
The sea water of different temperatures is exchanged heat, and using low temperature seawater last effect fresh water steam is condensed, and makes last effect fresh water steam temperature
It is relatively low that degree is arranged, and so as in the case where the first effect is temperature-resistant, increased the effect number of distillation unit, improves fresh water yield；
And the ocean temperature to be diluted of the second sea water inlet pipe is passed through higher than the ocean temperature for being passed through the first sea water inlet pipe, be passed through second extra large
The temperature of the sea water to be diluted of water inlet pipe is higher, then required time and energy consumption are fewer when being preheated, it is possible to reduce pre-
The hot time, the temperature after the preheating of sea water to be diluted is improved, further improve efficiency of energy utilization and fresh water yield.
Preferably, the low temperature multiple-effect distillation device adopts reverse-flow, and described preheating sea intake is arranged on last
In the distillation unit of effect, the concentrated seawater water inlet of previous effect is connected with the concentrated seawater outlet of latter effect, the distillation list of the first effect
The concentrated seawater outlet of unit is connected to the outer comb of density wastewater.Under adverse current feeding mode, material sea water is first introduced into low temperature effect group,
This sea water receives partly to be evaporated from neighbouring hotter steam, and remaining sea water is preheated in each effect and concentrates,
Next hotter effect group is entered by pump.Heat transfer temperature difference due to making full use of cold fluid and hot fluid, material sea under adverse current feeding mode
Super cooling degree of water is minimum, systematic heat utilization rate highest.
During using reverse-flow low temperature multiple-effect distillation device, the concentrated seawater that the outer comb of density wastewater is collected is arranged from the first effect
Go out, temperature highest, therefore, fresh water collects fresh water temperature that pipeline collects less than the concentrated seawater that the outer comb of density wastewater is collected
Temperature, it is preferred that the seawater preheating device includes first preheater and the second preheater of sea water passage series connection, and described second is extra large
Water inlet pipe is connected with the sea water passage of the first preheater, and the sea water passage of the pre- hot sea water outlet pipe and the second preheater connects
Connect, the concentrated seawater passage is arranged in the second preheater, and the product water channel is arranged in the first preheater.So that with light
First relatively low with the temperature fresh water heat exchange of the sea water of change, then the concentrated seawater heat exchange higher with temperature, improve heat exchange efficiency.
In order to improve fresh water yield, in the case where temperature difference condition is allowed, it is preferred that the low temperature multiple-effect distillation device bag
Include at least 7 effect distillation units.
It is further preferred that the air cooler is divided at least 3 sections.
In order to improve refrigeration and energy utilization rate, it is preferred that the cold-producing medium of the Trans-critical cycle air-conditioning adopts titanium dioxide
The mixture or R290 and the mixture of R32 of the mixture, nitrous oxide and halogenated alkane of carbon and halogenated alkane.
In order to improve heat transfer effect, it is preferred that described seawater preheating device is connected using hot and cold stream countercurrent heat exchange method.
In order to improve heat transfer effect, it is preferred that described fresh water condenser is connected using hot and cold stream countercurrent heat exchange method.
Beneficial effects of the present invention：
The Trans-critical cycle air-conditioning of the present invention and desalinization co-generation system, will load low after the air cooler segmentation of Trans-critical cycle air-conditioning
As air cooling module in the correspondence effect distillation unit of warm multiple-effect distillation device, low temperature multiple-effect distillation device is improve empty to Trans-critical cycle
The utilization rate and the fresh water yield of low temperature multiple-effect distillation device of the heat extraction for generating are adjusted, and the air cooler of Trans-critical cycle air-conditioning is direct
Load in each effect distillation unit, make system integrally more compact, reduce overall volume.
Description of the drawings
Fig. 1 is the structural representation of present system.
Specific embodiment
The present invention is described in further detail below in conjunction with the drawings and specific embodiments.
As shown in figure 1, the Trans-critical cycle air-conditioning of the present embodiment includes with refrigerating cycle unit with desalinization co-generation system
Trans-critical cycle air-conditioning and reverse-flow low temperature multiple-effect distillation device.
Refrigerating cycle unit includes：Compressor 26, air cooler 25, regenerator 3, throttling arrangement 2 and vaporizer 1, compression
The outlet of machine 26 is connected with the entrance of air cooler 25, and the outlet of air cooler 25 is connected with the entrance t3 of regenerator 3, and regenerator 3 exports t1 with section
Stream device 2 entrance is connected, and the outlet of throttling arrangement 2 is connected with the entrance of vaporizer 1, and vaporizer 1 is exported and the entrance t2 phases of regenerator 3
Even, the outlet of regenerator 3 t4 is connected with the entrance of compressor 26, constitutes a complete Air-conditioning Cycle device, and 25 points of air cooler is m
Section, respectively first paragraph air cooler 25-1, second segment air cooler 25-2 ... m section air cooler 25-m.
Low temperature multiple-effect distillation device includes：N imitate distilling apparatus 4, first imitate to last effect respectively be the first effect steam
Distillation unit 4-1, the second effect distilling apparatus 4-2 ... n-th imitate distilling apparatus 4-n, and n sprayed sea water entrance stopper 5-1～
5-n, n vacuum pump inlet stopper 6-1～6-n, vacuum pump 7, fresh water condenser 10, the first seawater inlet defecator
11st, the first seawater inlet water pump 12, the second seawater inlet water pump 13, water outlet water pump 14, concentrated seawater outlet water pump 15, second
Seawater inlet defecator 16, concentrated seawater outlet stopper 17, water outlet stopper 18, First Heat Exchanger 19, second
Heat exchanger 20, n-1 seawer outlet dropping equipment 22-1～22- (n-1), n-2 water outlet dropping equipment 23-2～23-
And n-1 sea water send water water pump 24-2～24-n (n-1).N imitates distilling apparatus 4, comprising the in its first effect distilling apparatus 4-1
One section of air cooler 25-1, spray equipment 8 and gas-liquid separation device 9, second imitates to m each effect for imitating distilling apparatus 4-2～4-m
Second segment air cooler 25-2 to m section air cooler 25-m, evaporative condenser 21, spray equipment 8 and gas-liquid separation are inside included respectively
Device 9, m+1 is imitated and is included evaporative condenser 21, spray equipment to each effect of the n-th effect distilling apparatus 4- (m+1)～4-n
8 and gas-liquid separation device 9.
Second seawater inlet II is connected with the entrance of the second seawater inlet water pump 13, the outlet of the second seawater inlet water pump 13 and the
The entrance of two seawater inlet defecator 16 is connected, the second seawater inlet defecator 16 is exported and the entrance f2 phases of First Heat Exchanger 19
Even, the outlet of First Heat Exchanger 19 e2 is connected with the entrance b1 of the second heat exchanger 20, the effect shower of outlet a1 and n-th of the second heat exchanger 20 sea
Water inlet stopper 5-n entrances are connected, and the n-th effect sprayed sea water entrance stopper 5-n outlets are imitated in distilling apparatus with n-th
Spray equipment 8 is connected.The concentrated seawater exit passageway of i-th (i=2～n-1) effect distilling apparatus bottom imitates seawer outlet with i-th respectively
Dropping equipment 22-i entrances are connected (the seawer outlet passage of the n-th effect distilling apparatus bottom is without dropping equipment), the i-th effect seawer outlet
Dropping equipment 22-i outlets send water water pump 24-i entrances to be connected with the i-th effect sea water respectively, and the i-th effect sea water send going out for water water pump 24-i
Mouth is connected with the i-th -1 effect sprayed sea water entrance stopper 5- (i-1) entrance, the i-th -1 effect sprayed sea water entrance stopper 5-
(i-1) outlet is connected with the spray equipment 8 in the i-th -1 effect distilling apparatus 4- (i-1), each effect (including 1～n effects) spray dress
Put 8 outlets and be respectively positioned on corresponding each top of effect distilling apparatus 4.The concentrated seawater exit passageway of the first effect distilling apparatus 4-1 bottoms with
First effect seawer outlet dropping equipment 22-1 entrances are connected, and the first effect seawer outlet dropping equipment exports 22-1 and the second heat exchanger
20 entrance a2 are connected, and the second heat exchanger 20 exports b2 and is connected with the concentrated seawater outlet entrance of stopper 17, concentrated seawater outlet cut-off
Device 17 is exported and is connected with the concentrated seawater outlet entrance of water pump 15, and concentrated seawater outlet water pump 15 outlet is connected with concentrated seawater outlet I.
The gas-liquid separation device 9 being equipped with inside each effect distilling apparatus, its entrance is located inside the effect distilling apparatus 4, the
One outlet for imitating the gas-liquid separation device 9 to (n-1)th effect distilling apparatus 4-1～4- (n-1) is imitated in distilling apparatus 4 with next
The entrance of evaporative condenser 21 communicate, the outlet of each effect evaporative condenser 21 is each product water channel.I-th (i=2～n-1) effects are steamed
The product water channel of distillation unit is connected respectively with the i-th effect water outlet dropping equipment 23-i entrances, and (n-th imitates the light of distilling apparatus bottom
Water out passage is without dropping equipment), while the outlet of gas-liquid separation device 9 of last effect and the entrance c2 phases of fresh water condenser 10
Even, i.e. each effect product water channel after the outlet of fresh water condenser 10 d2 is connected with each effect water outlet dropping equipment 23-2～23- (n-1)
Converge, then be connected with the entrance e1 of First Heat Exchanger 19, First Heat Exchanger 19 exports f1 and the entrance phase of water outlet stopper 18
Even, the outlet of water outlet stopper 18 is connected with the entrance of water outlet water pump 14, and the outlet of water outlet water pump 14 goes out with fresh water
Mouth III is connected.First seawater inlet IV is connected with the entrance of the first seawater inlet water pump 12, the first seawater inlet water pump 12 outlet with
The entrance of first seawater inlet defecator 11 is connected, and the first seawater inlet defecator 11 is exported and the entrance d1 of fresh water condenser 10
It is connected, secondary heat exchanger exports c1 and is connected with low temperature seawater outlet V.Also leave one outlet and lead in the top of each effect distilling apparatus
Road, the exit passageway at the top of i-th (i=1～n) effect distilling apparatus is connected with the i-th effect vacuum pump outlet stopper 6-i outlets,
I-th effect vacuum pump inlet stopper 6-i entrances are connected with the outlet of vacuum pump 7, and the entrance of vacuum pump 7 is communicated with air.
CO is adopted in the present embodiment2As cold-producing medium.In Air-conditioning Cycle device part, cold-producing medium is pressed in compressor 26
Shorten into and enter after high temperature and high pressure gas air cooler 25, imitate to m (1 with sea water desalinating unit first successively<m<N, n >=3, this reality
In applying example, n=15, m=3) seawater to make heat exchange in effect distilling apparatus 4-1～4-m, the pre-cooling of regenerator 3, Ran Houtong are entered after cooling
Mixture of the decompression of throttling arrangement 2 for gas-liquid two-phase is crossed, gas-liquid mixture enters vaporizer 1, absorbs indoor in vaporizer 1
Heat of vaporization becomes steam, then returns compressor 24 Jing after regenerator 3 is preheated, so as to complete a kind of refrigeration cycle.
Summer shallow layer sea water temperature is higher, typically at 27～35 DEG C, using shallow layer sea water as the second source of seawater, deep sea water
Temperature it is relatively low, using temperature in 13～18 DEG C of deep sea water as the first source of seawater.
Summer：Shallow layer sea water introduces shallow layer sea water defecator 16 by the second seawater inlet water pump 13, and shallow layer sea water is passed through
First Heat Exchanger 19 is first passed through after filtration and is heated up with the fresh water heat exchange flowed out from secondary heat exchanger, enter back into the second heat exchanger 20 with
The concentrated seawater heat exchange flowed out from the first effect distilling apparatus heats up, and the shallow layer sea water after being heated up is entered by the n-th effect sprayed sea water
After mouth stopper 5-n, in the n-th effect distilling apparatus, and it is sprayed on outside the pipeline of evaporative condenser 21 by seawater spraying device 8
Portion.Exchanged heat by the steam of the (n-1)th effect distilling apparatus generation in shallow layer sea water outside evaporative condenser pipe and evaporative condenser：
A part of sea water intensification flashes to Jing gas-liquid separation devices 9 after steam and enters fresh water condenser 10, and drops with deep sea water heat exchange
Temperature, is condensed into fresh water；Another part sea water is condensed into concentrated seawater, flows out from the n-th effect distilling apparatus bottom concentrated seawater exit passageway,
Water water pump 24-n is sent to enter the (n-1)th effect sprayed sea water inlet restriction device by the n-th effect sea water, Jing seawater sprayings device 8 is introduced
(n-1)th effect distilling apparatus, (seawater spraying of the first effect distilling apparatus is in first paragraph gas in the pipeline external of evaporative condenser 21 for spray
Cooler 25-1 pipeline externals, the sea water in 2～m effect distilling apparatus is successively sprayed in 2～m sections condensing tube and evaporative condenser
21 pipeline externals), and with n-th -2 effect distilling apparatus produce fresh water steam exchanged heat (first effect distilling apparatus spray sea
Water is exchanged heat with the air cooler 25 of Air-conditioning Cycle device, the sea water in 2～m effect distilling apparatus successively with air cooled lamp and previous
The fresh water steam that effect distilling apparatus are produced is exchanged heat)：A part of evaporation of seawater is laggard by gas-liquid separation device 9 into steam
Enter in the evaporative condenser pipeline 21 of next effect, and with the seawater to make heat exchange of next effect；Another part sea water is condensed into after concentrated seawater
Seawer outlet dropping equipment is imitated through (n-1)th, then send water water pump to introduce previous effect by the (n-1)th effect sea water, and repeat the (n-1)th effect and steamed
Process in distillation unit, so realizes the adverse current of sea water.Steaming in the evaporative condenser pipe 21 of i-th (i=2～n) effect distilling apparatus
Gas becomes fresh water Jing after heat exchange cooling, (the n-th effect distilling apparatus bottom after the i-th effect water outlet dropping equipment 23-i blood pressure lowerings
Product water channel is without dropping equipment), the fresh water obtained with the condensation of steam Jing fresh water condensers 10 produced by the n-th effect distilling apparatus converges
After conjunction, by First Heat Exchanger 19 and entrance surface seawater heat exchange cooling, then again by water outlet stopper 18 via
Water outlet water pump 14 is discharged.The concentrated seawater that first effect distilling apparatus are produced is after the first effect seawer outlet dropping equipment 22-1
The Jing overrich seawer outlets stopper 17 into after the second heat exchanger 20, with the seawater to make heat exchange cooling of import, then drawn by water pump 15
Go out.Deep sea water IV passes through to enter secondary heat exchanger 9 after the first seawater inlet water pump 12 and the first seawater inlet defecator 11,
Wherein the fresh water steam with the gas-liquid separation device 9 from the n-th effect distilling apparatus out is expelled directly out after heating up after exchanging heat.Vacuum
Each effect distilling apparatus have been evacuated to the vacuum that sets by pump 7 before plant running, between vacuum pump and each effect distilling apparatus
Vacuum pump outlet stopper 6-i, an i=1～n are provided with, for controlling air pressure in each effect distilling apparatus.N effect sprays sea
Water inlet stopper 5-i, i=1～n, concentrated seawater outlet stopper 17 and water outlet stopper 18 are respectively intended to
Control sea water, the turnover of concentrated seawater and fresh water.
The energy source of each effect distilling apparatus condenses the heat of release for the inner refrigerant of air cooler 25 in cyclic process.
Above-mentioned Trans-critical cycle air-conditioning is as follows with the desalinization co-generation system course of work：
Before system operation, confirm anhydrous in each pipeline and device and seal, close n effect sprayed sea water entrance stoppers
5-i, i=1～n, concentrated seawater outlet stopper 17 and water outlet stopper 18, open the n effects being connected with vacuum pump 7
Vacuum pump outlet stopper 6-i, i=1～n, open vacuum pump, and each effect distilling apparatus are evacuated to the vacuum for setting.Very
Empty pump discharge stopper 6-i, i=1～n, for controlling air pressure in each effect distilling apparatus.N effect sprayed sea water entrance cut-off dresses
5-i, i=1～n are put, concentrated seawater exports stopper 17 and water outlet stopper 18 is respectively intended to control sea water, dense sea
The turnover of water and fresh water.
After completing evacuation, n effect vacuum pump outlet stopper 6-i, the i=1～n being connected with vacuum pump 7 is closed, then closed
Vacuum pump 7 is closed, the first seawater inlet water pump 12, water outlet water pump 14, the second seawater inlet water pump 13, concentrated seawater is then turned on
Outlet water pump 15, opens n effect sprayed sea water entrance stopper 5-i, i=1～n and n-1 effect sea water and send water water pump 24-2～24-
N, starts the operation Air-conditioning Cycle device of compressor 25, treats product water channel and concentrated seawater passage full of after water, and startup fresh water goes out
Saliva pump 14 and concentrated seawater outlet water pump 15, are then then turned on concentrated seawater outlet stopper 17 and water outlet stopper
18, after whole system operation a period of time is stable, you can desalinate a certain amount of sea water using air conditioner low temperature heat extraction.
So circulate operation, can be achieved with carrying out continuous desalinization using the air cooler used heat of Trans-critical cycle air-conditioning.
The present embodiment when actually used,
The parameter of Trans-critical cycle air-conditioning：
Refrigerating capacity：3500W；
Cold-producing medium：CO2；
Evaporator outlet：7 DEG C, 41.77bar；
Regenerator exports (entering compressor)：16.11 DEG C, 34.8bar；
Compressor outlet：120 DEG C, 103bar；
Regenerator import (goes out) from air cooler：40 DEG C, 103bar；
Regenerator exports (entering vaporizer)：35 DEG C, 103bar；
Throttling arrangement is exported：7 DEG C, 41.77bar；
The parameter of reverse-flow low temperature multiple-effect distillation device：
First effect distilling apparatus temperature：100℃；
First sea water source temperature：15℃；
Second sea water source temperature：35℃；
Second source of seawater inlet flow rate：0.045kg/s；
End effect vapor (steam) temperature：18℃；
The producing water ratio that simulation is obtained is 0.03kg/s.
Claims (9)
1. a kind of Trans-critical cycle air-conditioning and desalinization co-generation system, it is characterised in that include with refrigerating cycle unit across facing
Boundary's air-conditioning and low temperature multiple-effect distillation device, the low temperature multiple-effect distillation device includes multi-effect distilling unit, collects liquid fresh water
Fresh water collect pipeline and collect the outer comb of density wastewater of end concentrated seawater, the air cooler of the refrigerating cycle unit is along refrigeration
The flow direction of agent is divided at least two sections, starts each section of air cooler from the first effect distillation unit and is sequentially ingressed into correspondence effect distillation unit
It is interior as air cooling module；
The low temperature multiple-effect distillation device also includes the fresh water condenser of the fresh water steam for condensing last effect distillation unit output
With the seawater preheating device for preheating sea water to be diluted, temperature of the fresh water steam of last effect distillation unit output is not higher than 20 DEG C；
The fresh water condenser includes fresh water steam channel and condensation water channel, and the two ends connection first of the condensation water channel is extra large
Water inlet pipe and sea water drain pipe；
The seawater preheating device includes that connection fresh water collects the product water channel of pipeline, the concentrated seawater passage of the outer comb of connection density wastewater
And sea water passage, the two ends of the sea water passage connect the second sea water inlet pipe and pre- hot sea water outlet pipe, the pre- hot sea water
Outlet pipe accesses the preheating sea intake of multi-effect distilling unit, and the ocean temperature for being passed through the second sea water inlet pipe is extra large higher than being passed through first
The ocean temperature of water inlet pipe.
2. Trans-critical cycle air-conditioning as claimed in claim 1 and desalinization co-generation system, it is characterised in that each section of air cooler arrangement
In the top of the distillation module of the effect distillation unit that is located.
3. Trans-critical cycle air-conditioning as claimed in claim 1 or 2 and desalinization co-generation system, it is characterised in that the low temperature is more
Using reverse-flow, described preheating sea intake is arranged in the distillation unit of last effect effect distilling apparatus, previous effect it is dense
Seawater inlet port is connected with the concentrated seawater outlet of latter effect, and the concentrated seawater outlet of the distillation unit of the first effect is connected to density wastewater
Outer comb.
4. Trans-critical cycle air-conditioning as claimed in claim 1 or 2 and desalinization co-generation system, it is characterised in that the sea water is pre-
Hot device includes the first preheater of sea water passage series connection and the sea of the second preheater, the second sea water inlet pipe and the first preheater
Aquaporin connects, and the pre- hot sea water outlet pipe is connected with the sea water passage of the second preheater, and the concentrated seawater passage is arranged on
In second preheater, the product water channel is arranged in the first preheater.
5. Trans-critical cycle air-conditioning as claimed in claim 1 or 2 and desalinization co-generation system, it is characterised in that the low temperature is more
Effect distilling apparatus include at least 7 effect distillation units.
6. Trans-critical cycle air-conditioning as claimed in claim 5 and desalinization co-generation system, it is characterised in that the air cooler is divided into
At least 3 sections.
7. Trans-critical cycle air-conditioning as claimed in claim 1 or 2 and desalinization co-generation system, it is characterised in that described sea water
Preheater is connected using hot and cold stream countercurrent heat exchange method.
8. Trans-critical cycle air-conditioning as claimed in claim 1 or 2 and desalinization co-generation system, it is characterised in that described fresh water
Condenser is connected using hot and cold stream countercurrent heat exchange method.
9. Trans-critical cycle air-conditioning as claimed in claim 1 or 2 and desalinization co-generation system, it is characterised in that the Trans-critical cycle
The cold-producing medium of air-conditioning using the mixture of carbon dioxide and halogenated alkane, the mixture of nitrous oxide and halogenated alkane or
The mixture of R290 and R32.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1975286A (en) * | 2006-12-01 | 2007-06-06 | 华南理工大学 | Air conditioner refrigerating and sea water desalting integral device and using method thereof |
| CN101344298A (en) * | 2007-11-15 | 2009-01-14 | 上海海事大学 | Air conditioner and sea water desalination combined operation system |
| CN203159268U (en) * | 2013-01-23 | 2013-08-28 | 中国电子工程设计院 | solar air conditioning seawater desalination system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5673593A (en) * | 1979-11-19 | 1981-06-18 | Hitachi Ltd | Sea water desalting apparatus by refrigerating method |
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2015
- 2015-06-04 CN CN201510303887.6A patent/CN105000610B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1975286A (en) * | 2006-12-01 | 2007-06-06 | 华南理工大学 | Air conditioner refrigerating and sea water desalting integral device and using method thereof |
| CN101344298A (en) * | 2007-11-15 | 2009-01-14 | 上海海事大学 | Air conditioner and sea water desalination combined operation system |
| CN203159268U (en) * | 2013-01-23 | 2013-08-28 | 中国电子工程设计院 | solar air conditioning seawater desalination system |
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