CN206553222U - A kind of sea water desalinating unit - Google Patents
A kind of sea water desalinating unit Download PDFInfo
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- CN206553222U CN206553222U CN201720023102.4U CN201720023102U CN206553222U CN 206553222 U CN206553222 U CN 206553222U CN 201720023102 U CN201720023102 U CN 201720023102U CN 206553222 U CN206553222 U CN 206553222U
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- seawater
- condenser
- sea water
- evaporator
- desalinating unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
The utility model is related to field of sea water desalting technology, discloses a kind of sea water desalinating unit, to reduce the fouling pressure in sea water desalinating unit, the generation of crystalline scale is reduced, so as to improve desalinization efficiency.Sea water desalinating unit includes vapor source, condenser and multi-effect evaporator, there is diaphragm plate inside the condenser, condenser is divided into upper condenser chamber and lower condenser chamber independent mutually by the diaphragm plate, acid adding tank is provided with the sea intake pipe of the condenser, the seawater outlet conduit of the condenser is connected with the seawater feed pipe of multi-effect evaporator.
Description
Technical field
The utility model is related to field of sea water desalting technology, more particularly to a kind of sea water desalinating unit.
Background technology
Desalinization produces fresh water using seawater desalination, can increase fresh water total amount, and not by space-time and climatic effect,
The increment of increasing income that water resource is utilized is realized, to ensure the stable water supply such as coastal Drinking Water for Residents and Industrial Boiler moisturizing.And conduct
The sea water desalting equipment of industrialized production is put into earliest, and low-temperature multi-effect seawater desalination device has been obtained energetically in field of seawater desalination
With.
Seawater passes sequentially through each effect evaporator in existing low-temperature multi-effect seawater device, and seawater is entered through seawater feed pump
After First evaporator, second evaporator is entered by the discharging pump of First evaporator, then by second evaporator
The discharging of steaming is pumped into the 3rd evaporator, carries out according to this, until seawater proceeds to last evaporator and coupled
Concentrated seawater surge tank, most afterwards through concentrated seawater excavationg pump discharge system.The low-temperature multi-effect sea water service system seawater mistake of this feeding manner
Cold degree is small, and systematic heat utilization rate is high, but has the disadvantage that the fouling of low temperature multiple-effect distillation sea water desalting device under high concentration ratio
Tendency is big, can influence the production water efficiency and operation safety of device, because as the increase of concentration multiplying power to feed liquid, it is necessary to circulate
Processing, by previous effect evaporation process, can be formed using calcium carbonate as main insoluble salt crystal grain, and most of salt crystal grain is with strong brine
Into next effect, this just exacerbates the harm for not allowing the attachment aggregation of salt crystal grain to grow into crystalline scale on next effect heat-exchanging tube bundle
Property.
Utility model content
The utility model provides a kind of sea water desalinating unit, to reduce the fouling pressure in sea water desalinating unit, reduces
The generation of crystalline scale, so as to improve desalinization efficiency.
To reach above-mentioned purpose, the utility model provides following technical scheme：
Have inside a kind of sea water desalinating unit, including vapor source, condenser and multi-effect evaporator, the condenser
There is diaphragm plate, condenser is divided into upper condenser chamber and lower condenser chamber independent mutually by the diaphragm plate, the condenser
Acid adding tank, the seawater outlet conduit of the condenser and the seawater feed pipe phase of multi-effect evaporator are provided with sea intake pipe
Even.
It is preferred that, it is provided with the seawater outlet conduit of the condenser plus alkali tank.
It is preferred that, every 1st effective evaporator in the multi-effect evaporator include hydrops groove, seawater cloth spill device, heat exchanger tube with
And overflow launder, the hydrops groove of 1st effective evaporator is connected with the seawater outlet conduit of the condenser in the multi-effect evaporator,
One end of the first effect heat exchange pipe of evaporator is connected with vapor source, the other end of the heat exchanger tube and the condensed water
Outlet conduit is connected, wherein, in every 1st effective evaporator：
The hydrops groove is arranged on heat exchanger tube and seawater cloth spills the lower section of device, and the seawater cloth spills device and sprays seawater
When pouring the heat exchange pipe surface, seawater is exchanged heat with the steam in the heat exchanger tube, the steam condensation in the heat exchanger tube
For condensed water and be delivered to outside the condensed water outlet pipe, heat exchanger tube seawater a part evaporation form indirect steam, cocurrent
Enter into the heat exchanger tube of lower 1st effective evaporator, and unevaporated seawater is flow back into the hydrops groove of this effect evaporator；
Downflow weir is provided between the hydrops groove and overflow launder, and downflow weir will be divided into hydrops in top per 1st effective evaporator
Groove and overflow launder two parts, when the sea height in hydrops groove is higher than downflow weir, seawater will extend over downflow weir and enter described overflow
Chute, in addition to last 1st effective evaporator, the overflow launder is connected with the hydrops groove of lower 1st effective evaporator by pipeline.
More excellent, the seawater cloth, which spills device, includes spray pump and spray equipment, and the spray equipment is arranged at described change
Above heat pipe, the spray pump is connected with spray equipment by pipeline, and the spray pump is arranged on the hydrops groove and filled with spray
Between putting, and it is connected with the hydrops groove with spray equipment pipeline, for the hydrops groove maritime interior waters to be promoted into the spray
In device.
It is preferred that, there is cyclic steam pipeline, the cyclic steam pipeline and vapor source at the top of the evaporator
It is connected.
It is preferred that, flow control valve is provided with the sea intake pipe, the upper condenser for controlling the condenser
The seawater flow ratio of chamber and lower condenser chamber is 1:1~1:Between 5.
It is preferred that, pH value of seawater is 3~5 after the acid adding tank acid adding.
It is preferred that, pH value of seawater is 7~8 after the plus-minus tank adds alkali.
It is preferred that, the acid material in the acid adding tank is hydrochloric acid solution.
It is preferred that, the basic matterial in described plus alkali tank is sodium hydroxide solution.
The sea water desalinating unit that the utility model embodiment is provided sets diaphragm plate to be divided into condenser inside condenser
Acid adding tank, the feed of acid adding tank are provided with mutual independent upper condenser chamber and lower condenser chamber, the sea intake pipe of condenser
Enter condenser seawater be acidified with acid after, carbonate in the hydrogen ion and seawater in the seawater of acidifying reaction generation carbon dioxide
Gas, is discharged by being volatilized after synchronously preheating deaerates in condenser, and after removing carbonate, desalting process can be greatly reduced
Middle calcium carbonate scale generation, efficiently solves the scale problems of condenser and subsequent evaporation device.
Brief description of the drawings
The structural representation for the sea water desalinating unit that Fig. 1 provides for a kind of embodiment of the utility model；
The structural representation for the sea water desalinating unit that Fig. 2 provides for another embodiment of the utility model.
Reference：
1- multi-effect evaporators
2- condensers
3- vapor sources
4- diaphragm plates
5- acid adding tanks
6- adds alkali tank
10- evaporators
11- seawater feed pipes
12- hydrops grooves
13- seawater cloth spills device
131- spray equipments
132- spray heads
14 heat exchanger tubes
15- overflow launders
16- condensed water outlet conduits
17- cyclic steam pipelines
The upper condenser chambers of 21-
Condenser chamber under 22-
23- sea intake pipes
24- seawater outlet conduits
Embodiment
For the fouling pressure in reduction sea water desalinating unit, the generation of crystalline scale is reduced, so that desalinization efficiency is improved,
The utility model embodiment provides a kind of sea water desalinating unit.To make the purpose of this utility model, technical scheme and advantage more
Plus it is clear, the utility model is described in further detail by the following examples.
With reference to Fig. 1, the sea water desalinating unit that a kind of embodiment of the utility model is provided, including vapor source 3, condensation
Device 2 and multi-effect evaporator 1, the inside of condenser 2 have a diaphragm plate 4, and 2 points of condenser is independent upper cold mutually by the diaphragm plate 4
Acid adding tank 5, the seawater water outlet of condenser 2 are provided with condenser chamber 21 and lower condenser chamber 22, the sea intake pipe 23 of condenser 2
Pipeline 24 is connected with the seawater feed pipe 11 of multi-effect evaporator 1.The sea water desalinating unit that the utility model embodiment is provided is cold
Set diaphragm plate that condenser is divided into upper condenser chamber and lower condenser chamber independent mutually inside condenser, the seawater of condenser enters
Be provided with acid adding tank at mouthful pipe, acid adding tank is given after the seawater for entering condenser is acidified with acid, the hydrogen ion in the seawater of acidifying with
Carbonate reaction generation carbon dioxide in seawater, is discharged by being volatilized after synchronously preheating deaerates in condenser, removes carbon
After acid group, calcium carbonate scale in desalting process can be greatly reduced and generates, condenser and subsequent evaporation device is efficiently solved
Scale problems.Vapor source provides enough high temperature and high pressure steams for changing in desalting process for evaporator
Thermal evaporation.Condenser is divided into two cavitys by diaphragm plate, and main cause is need not be by the whole acidifications of all seawater
Reach certain antiscaling effect.Selected section seawater acidifying as needed enters upper condenser chamber, and lower condenser chamber is not to be acidified
Seawater, the main purpose so set be in order to ensure antiscaling effect on the premise of, as far as possible reduce seawater acidifying cost.
In the preferred embodiment of the utility model one, as shown in figure 1, being provided with the outlet pipe 24 of condenser 2 plus alkali
Tank 6.The seawater in post-condenser 2 by the acidification of acid adding tank 5 sets the sea for adding 6 pairs of outflow condensers 2 of alkali tank in acidity
Water is carried out plus alkali neutralisation treatment, is conducive to follow-up desalinization to handle, and can reduce corrosion of the seawater to equipment, improves seawater
The efficiency and security of desalination.
Optionally, flow control valve is provided with the sea intake pipe of condenser, the upper condenser for controlling condenser
The seawater flow ratio of chamber and lower condenser chamber is 1:1~1:Between 5.PH value of seawater is 3~5, the acid after acid adding tank acid adding
Property degree under seawater ensure that the effect for preferably removing carbonate in seawater, and reduce corruption of the acid seawater to equipment
Erosion.Plus-minus tank adds pH value of seawater after alkali to be that can lower after the neutralization seawater under 7~8, the degree of alkalinity enters evaporator
The corrosion of equipment is spent, and ensures being smoothed out for follow-up desalination process.The utility model to acid adding tank and does not add the acid in alkali tank
Basic matterial is specifically limited, and can voluntarily be selected according to actual conditions, it is contemplated that raw material be easy to get degree and price because
Acid material in element, preferably acid adding tank is hydrochloric acid solution；Plus the basic matterial in alkali tank is sodium hydroxide solution.
In another embodiment of the utility model, as shown in Fig. 2 every 1st effective evaporator 10 in multi-effect evaporator 1 includes
Hydrops groove 12, seawater cloth spill the hydrops of 1st effective evaporator in device 13, heat exchanger tube 14 and overflow launder 15, the multi-effect evaporator
Groove is connected with the seawater outlet conduit 24 of the condenser, one end of the first effect heat exchange pipe of evaporator 14 and vapor source 3
It is connected, the other end of heat exchanger tube 14 is connected with condensed water outlet conduit 16, wherein, in every 1st effective evaporator：
Hydrops groove 12 is arranged on heat exchanger tube 14 and seawater cloth spills the lower section of device 13, and seawater cloth spills device 13 and sprays seawater
When pouring 14 surface of heat exchanger tube, seawater is exchanged heat with the steam in heat exchanger tube 14, and the steam condensation in heat exchanger tube 14 is condensation
Water is simultaneously delivered to condensed water outlet conduit 16, and the seawater part evaporation outside heat exchanger tube 14 forms indirect steam, and is flowed into
In the heat exchanger tube 14 of lower 1st effective evaporator, and unevaporated seawater is flow back into the hydrops groove 12 of this effect evaporator；
Downflow weir is provided between hydrops groove 12 and overflow launder 15, and downflow weir will be divided into hydrops in top per 1st effective evaporator
Groove 12 and the two parts of overflow launder 15, when the sea height in hydrops groove 12 is higher than downflow weir, seawater will extend over downflow weir entrance
The overflow launder 15, in addition to last 1st effective evaporator, overflow launder 15 is connected with the hydrops groove 12 of lower 1st effective evaporator by pipeline.
The evaporator that the utility model embodiment is provided can further improve the efficiency of desalinization.
In preferred embodiment of the present utility model, as shown in Fig. 2 seawater cloth, which spills device 13, includes spray pump 132 and spray
Device 131, spray equipment 131 is arranged at the top of heat exchanger tube 14, and spray pump 132 is connected with spray equipment 131 by pipeline, is sprayed
Pump 132 is arranged between hydrops groove 12 and spray equipment 131, and is connected with hydrops groove 12 with the pipeline of spray equipment 131, for inciting somebody to action
The maritime interior waters of hydrops groove 12 is promoted in spray equipment 131.The seawater cloth of the structure, which spills device, can improve seawater heat in evaporator
The efficiency of exchange, so as to improve desalinization efficiency.
In another preferred embodiment of the utility model, as shown in Fig. 2 the top of evaporator 10 has cyclic steam pipeline
17, the cyclic steam pipeline 17 is connected with vapor source 3.Cyclic steam pipeline is set to reclaim the steaming underused
Vapour, so as to reduce the energy consumption of evaporator, reduces desalinization cost.
Obviously, those skilled in the art can to the utility model embodiment carry out it is various change and modification without departing from
Spirit and scope of the present utility model.So, if these modifications and variations of the present utility model belong to the utility model right
It is required that and its within the scope of equivalent technologies, then the utility model be also intended to comprising these change and modification including.
Claims (10)
1. a kind of sea water desalinating unit, including vapor source, condenser and multi-effect evaporator, it is characterised in that described cold
There is diaphragm plate, condenser is divided into upper condenser chamber and lower condenser chamber independent mutually, institute by the diaphragm plate inside condenser
State and acid adding tank is provided with the sea intake pipe of condenser, the seawater outlet conduit and the seawater of multi-effect evaporator of the condenser
Feed pipe is connected.
2. sea water desalinating unit according to claim 1, it is characterised in that set at the seawater outlet conduit of the condenser
It is equipped with plus alkali tank.
3. sea water desalinating unit according to claim 2, it is characterised in that each effect evaporation in the multi-effect evaporator
Device includes the hydrops that hydrops groove, seawater cloth spill 1st effective evaporator in device, heat exchanger tube and overflow launder, the multi-effect evaporator
Groove is connected with the seawater outlet conduit of the condenser, one end of the first effect heat exchange pipe of evaporator and vapor source phase
Even, the other end of the heat exchanger tube is connected with the condensed water outlet conduit, wherein, in every 1st effective evaporator：
The hydrops groove is arranged on heat exchanger tube and seawater cloth spills the lower section of device, and the seawater cloth spills device and arrives seawater spraying
During the heat exchange pipe surface, seawater is exchanged heat with the steam in the heat exchanger tube, and the steam condensation in the heat exchanger tube is cold
The seawater part evaporation coagulated water and be delivered to outside the condensed water outlet pipe, heat exchanger tube forms indirect steam, and is flowed into
In the heat exchanger tube of lower 1st effective evaporator, and unevaporated seawater is flow back into the hydrops groove of this effect evaporator；
Be provided with downflow weir between the hydrops groove and overflow launder, and downflow weir will per be divided at the top of 1st effective evaporator hydrops groove and
Overflow launder two parts, when the sea height in hydrops groove is higher than downflow weir, seawater will extend over downflow weir into the overflow launder,
In addition to last 1st effective evaporator, the overflow launder is connected with the hydrops groove of lower 1st effective evaporator by pipeline.
4. sea water desalinating unit according to claim 3, it is characterised in that the seawater cloth spill device including spray pump and
Spray equipment, the spray equipment is arranged above the heat exchanger tube, and the spray pump is connected with spray equipment by pipeline, institute
State spray pump to be arranged between the hydrops groove and spray equipment, and be connected with the hydrops groove with spray equipment pipeline, be used for
The hydrops groove maritime interior waters is promoted in the spray equipment.
5. sea water desalinating unit according to claim 1, it is characterised in that there is cyclic steam pipe at the top of the evaporator
Road, the cyclic steam pipeline is connected with vapor source.
6. sea water desalinating unit according to claim 3, it is characterised in that be provided with flow control at the sea intake pipe
Valve processed, is 1 for controlling the upper condenser chamber of the condenser and the seawater flow ratio of lower condenser chamber:1~1:Between 5.
7. sea water desalinating unit according to claim 6, it is characterised in that pH value of seawater is after the acid adding tank acid adding
3~5.
8. sea water desalinating unit according to claim 6, it is characterised in that pH value of seawater is after described plus alkali tank adds alkali
7~8.
9. sea water desalinating unit according to claim 7, it is characterised in that the acid material in the acid adding tank is hydrochloric acid
Solution.
10. sea water desalinating unit according to claim 8, it is characterised in that the basic matterial in described plus alkali tank is hydrogen
Sodium hydroxide solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720023102.4U CN206553222U (en) | 2017-01-09 | 2017-01-09 | A kind of sea water desalinating unit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720023102.4U CN206553222U (en) | 2017-01-09 | 2017-01-09 | A kind of sea water desalinating unit |
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| Publication Number | Publication Date |
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| CN206553222U true CN206553222U (en) | 2017-10-13 |
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| CN201720023102.4U Active CN206553222U (en) | 2017-01-09 | 2017-01-09 | A kind of sea water desalinating unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960813A (en) * | 2019-12-14 | 2021-06-15 | 中国科学院大连化学物理研究所 | Method for improving CO extracted from seawater2Device and method for acidifying seawater with purity |
-
2017
- 2017-01-09 CN CN201720023102.4U patent/CN206553222U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112960813A (en) * | 2019-12-14 | 2021-06-15 | 中国科学院大连化学物理研究所 | Method for improving CO extracted from seawater2Device and method for acidifying seawater with purity |
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