CN207259308U - Integrated seawater resources utilization system - Google Patents
Integrated seawater resources utilization system Download PDFInfo
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- CN207259308U CN207259308U CN201721231135.4U CN201721231135U CN207259308U CN 207259308 U CN207259308 U CN 207259308U CN 201721231135 U CN201721231135 U CN 201721231135U CN 207259308 U CN207259308 U CN 207259308U
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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
- Y02A20/131—Reverse-osmosis
Abstract
A kind of integrated seawater resources utilization system of disclosure, including pretreatment system, the first counter-infiltration system, mechanical compress evaporation concentration system and salt manufacturing and salt chemical engineering system, pretreatment system is used to pre-process seawater, and connected with the first counter-infiltration system, the first counter-infiltration system is used to implement reverse-osmosis treated to the seawater by pretreatment to obtain desalination water and strong brine；First counter-infiltration system has desalination water output and strong brine delivery outlet, and desalination water output is connected with the first desalination waterpipe, and the first desalination waterpipe passes through pretreatment system, and can be with the seawater to make heat exchange in pretreatment system；Mechanical compress evaporation concentration system is connected with strong brine delivery outlet, and for concentrating strong brine, salt manufacturing is used to prepare refined salt and salt chemical product using the strong brine after concentration with salt chemical engineering system.Such scheme can solve the problems, such as current sea water desalination there are the strong brine that resource utilization is low and sea water desalination is discharged that marine ecology can be influenced.
Description
Technical field
This application involves seawater treatment technologies field, more particularly to a kind of integrated seawater resources utilization system.
Background technology
At present, shortage of water resources problem is increasingly prominent, as one of some countries and regions socio-economic developments
Restraining factors.As the increment technique of increasing income of freshwater resources, sea water desalination has become the weight for solving global freshwater resources crisis
Want approach.It follows that desalination technology has obtained significant progress.
Multi-stage flash evaporation technology, low temperature multiple-effect distillation technology and reverse osmosis technology are three big mainstream skills of current sea water desalination
Art, wherein, reverse osmosis technology is due to having the advantages that energy expenditure is low, construction period is short, it has also become widely used one
Kind desalination technology.The process desalinated using reverse osmosis technology seawater can produce the higher strong brine of concentration, these
Twice of the salinity of the salinity of strong brine even natural sea-water.It will be apparent that the strong brine discharge that sea water desalination produces can cause
The salinity increase of seawater, in such cases, the seawater salinity in local marine site is excessive to produce fatal harm to biology in ocean.
It will be apparent that current sea water desalination work can have adverse effect on ecological environment.While sea water desalination is greatly developed,
Protection marine ecology and the comprehensive utilization for carrying out seawater resources are the keys of current development sea water desalination industry.But current seawater
Desalinate work and not up to above-mentioned requirements.
Utility model content
The application provides a kind of integrated seawater resources utilization system, and to solve current sea water desalination, there are resource profit
The problem of influencing marine ecology with the strong brine that rate is low and sea water desalination is discharged.
To solve the above-mentioned problems, the application uses following technical proposals：
Integrated seawater resources utilization system, including the evaporation of pretreatment system, the first counter-infiltration system, mechanical compress
Concentration systems and salt manufacturing and salt chemical engineering system, wherein, the pretreatment system is used to pre-process seawater, and described first is anti-
Osmosis system is connected with the pretreatment system, and first counter-infiltration system is used to implement the seawater by pretreatment anti-
Infiltration is handled to obtain desalination water and strong brine；First counter-infiltration system has desalination water output and strong brine output
Mouthful, the desalination water output is connected with the first desalination waterpipe, and the first desalination waterpipe passes through the pretreatment system,
And can be with the seawater to make heat exchange in the pretreatment system；The mechanical compress evaporation concentration system and the salt manufacturing and salt chemical engineering system
System connection, the mechanical compress evaporation concentration system is connected with the strong brine delivery outlet, for being concentrated to strong brine；Institute
Salt manufacturing is stated to be used to prepare refined salt and salt chemical product using the strong brine after concentration with salt chemical engineering system.
Preferably, in said system, the pretreatment system includes coagulative precipitation device, heat exchanger and ultrafiltration apparatus；Its
In, the coagulative precipitation device is used to carry out coagulating sedimentation to seawater, and the heat exchanger and the ultrafiltration apparatus are connected in turn
The outlet of the coagulative precipitation device；The heat exchanger be used for realization it is described first desalination waterpipe in desalination water with through overmulling
The seawater to make heat exchange that retrogradation is formed sediment；The ultrafiltration apparatus is used to implement hyperfiltration treatment to the seawater after heat exchange.
Preferably, in said system, the pretreatment system further includes ultrafiltration cold water tank and ultrafiltration hot-water cylinder, the ultrafiltration
Cold water tank and the ultrafiltration hot-water cylinder are connected in turn between the heat exchanger and the ultrafiltration apparatus, the ultrafiltration cold water tank with
Water pipeline between the ultrafiltration hot-water cylinder exchanges heat with the salt manufacturing and indirect steam caused by salt chemical engineering system.
Preferably, in said system, the integration seawater resources utilization system further includes deionized water system, institute
State deionized water system to be connected by the second desalination waterpipe with the desalination water output, the second desalination waterpipe and institute
State the parallel connection of the first desalination waterpipe；The deionized water system is used to carry out the desalination water of the described second desalination waterpipe discharge
Deionization is handled to obtain deionized water.
Preferably, in said system, the deionized water system includes the second counter-infiltration system and continuous electric desalination system,
Wherein, second counter-infiltration system and continuous electric desalination the system cloth successively in the water (flow) direction of the described second desalination waterpipe
Put.
Preferably, in said system, the mechanical compress that the salt manufacturing includes being sequentially connected with salt chemical engineering system evaporates salt manufacturing
System, multiple-effect evaporation potassium chloride system, bromine system and evaporation magnesium chloride system；The mechanical compress evaporates salt making system
It is connected with the mechanical compress evaporation concentration system, and for producing purified salt and calcium sulfate；The multiple-effect evaporation potassium chloride
System is used to produce potassium chloride and magnesium sulfate；The bromine system is used to produce bromine, and the evaporation magnesium chloride system processed is used for
Produce magnesium chloride；
Mechanical compress evaporation salt making system, the multiple-effect evaporation potassium chloride system, the bromine system and described
The indirect steam of evaporation magnesium chloride system processed respectively enters respective heat exchanger, and with it is pretreated through the pretreatment system
Seawater to make heat exchange, the condensed water after heat exchange import the condensing water conduit of the salt manufacturing and salt chemical engineering system；
Mechanical compress evaporation salt making system, the multiple-effect evaporation potassium chloride system, the bromine system and described
The condensation-water drain of evaporation magnesium chloride system processed connects the condensing water conduit of the salt manufacturing and salt chemical engineering system.
Preferably, in said system, the salt manufacturing and the condensing water conduit of salt chemical engineering system are steamed through the mechanical compress
Concentration systems are sent out to exchange heat, the condensing water conduit is connected with second counter-infiltration system, for by the condensed water
Input the deionized water system.
Preferably, in said system, mechanical compress evaporation salt making system include heat-exchanger rig, evaporator, flash vessel,
Centrifuge, settler, compressor, pump and aeration tower；Wherein, the heat-exchanger rig is used to change with the strong brine Jing Guo concentration
Heat；The evaporator is connected with the mechanical compress evaporation concentration system, for receiving after exchanging heat with the heat-exchanger rig
The strong brine；The evaporator is used to be evaporated with precipitated sodium chloride crystal the strong brine；The centrifuge leads to
Cross the pump with the evaporator to be connected, to receive the sodium chloride salt slurry of the evaporator generation, and sodium chloride salt slurry is carried out
Centrifugal dehydration, obtains refined product salt；
The settler is connected with the evaporator, for receiving the bittern containing calcium sulfate of the evaporator discharge,
And calcium sulfate is isolated, and obtain clarified solution；The flash tank is connected with the settler, for being analysed from the clarified solution
Go out sodium chloride crystal；The flash tank is connected with the centrifuge, and the centrifuge, which is used to separate, prepares refined product salt.
Above-mentioned at least one technical solution that the application uses can reach following beneficial effect：
Integration seawater resources utilization system disclosed in the present application at work, locate in advance by pretreatment system by seawater
Entered after reason in the first counter-infiltration system, the first counter-infiltration system implements reverse-osmosis treated to seawater, obtains strong brine and light
Change water, desalination water can by the first desalination water pipeline to user, by the desalination coolant-temperature gage that reverse-osmosis treated obtains compared with
Height, first desalination waterpipe to pass through pretreatment system, and with after the seawater to make heat exchange in pretreatment system, after heat exchange, in advance
Ocean temperature rise in processing system, and then pretreating effect can be improved, while realize making full use of for desalination water energy.System
Salt and salt chemical engineering system can carry out preparing refined salt and salinization using the strong brine after the concentration of mechanical compress evaporation concentration system
Chemical product.As it can be seen that disclosed system can realize sea water desalination, at the same can also make full use of the accessory substance of sea water desalination into
The preparation of row refined salt and salt chemical product, whole processing procedure can realize the comprehensive utilization of seawater, reach and make full use of
The purpose of seawater resources, and basically reach zero-emission.Therefore, integrated seawater resources comprehensive utilization system disclosed in the present application
System, can solve current sea water desalination and can influence ocean there are the strong brine that resource utilization is relatively low and sea water desalination is discharged to give birth to
The problem of state.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen
Schematic description and description please is used to explain the application, does not form the improper restriction to the application.In the accompanying drawings：
Fig. 1 is the structure diagram of integrated seawater resources utilization system disclosed in the embodiment of the present application；
Fig. 2 is the structure diagram of pretreatment system disclosed in the embodiment of the present application.
The reference numerals are as follows：
10- pretreatment systems, 11- coagulative precipitation devices, 12- heat exchangers, 13- ultrafiltration apparatus, 14- ultrafiltration cold water tank, 15-
Ultrafiltration hot-water cylinder, the first counter-infiltration systems of 20-, 21- first desalinate waterpipe, 22- second desalinates waterpipe, 30- mechanical compress
Evaporation concentration system, 40- salt manufacturing and salt chemical engineering system, 41- mechanical compress evaporation salt making system, 42- multiple-effect evaporation potassium chloride
System, 43- bromines system, 44- evaporate magnesium chloride system processed, 45- pipelines, 46- condensing water conduits, 50- deionized waters system,
The second counter-infiltration systems of 51-, 52- continuous electric desalination systems.
Embodiment
To make the purpose, technical scheme and advantage of the application clearer, below in conjunction with the application specific embodiment and
Technical scheme is clearly and completely described in corresponding attached drawing.Obviously, described embodiment is only the application one
Section Example, instead of all the embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not doing
Go out all other embodiments obtained under the premise of creative work, shall fall in the protection scope of this application.
Below in conjunction with attached drawing, the technical solution that each embodiment of the application provides is described in detail.
Please refer to Fig.1, the embodiment of the present application discloses a kind of integrated seawater resources utilization system, disclosed system
Including pretreatment system 10, the first counter-infiltration system 20 and mechanical compress evaporation concentration system 30 and salt manufacturing and salt chemical engineering system
40。
Pretreatment system 10 is used to pre-process seawater so that seawater disclosure satisfy that the processing requirement of system.Pre- place
Reason includes the filter operation to seawater, to reduce the impurity in seawater.In a kind of specific embodiment, pretreatment system 10 can
With including coagulation and filtration system, ultrafiltration membrane system, backwashing system, medicine system, air supply system, chemical cleaning system and automatic control system
System.In general, colloid, suspended matter etc. are removed through precipitation into seawater during pretreatment operation after addition coagulant.
First counter-infiltration system 20 is connected with pretreatment system 10, and the first counter-infiltration system 20 is used for by pretreatment
Seawater implements reverse-osmosis treated, and then obtains desalination water and strong brine.In the embodiment of the present application, the first counter-infiltration system 20 can be with
For level-one two-part counter-infiltration system, its Water Sproading rate is up to 65%.In a kind of specific embodiment, the first counter-infiltration system
20 can include cartridge filter, high-pressure pump, first-stage reverse osmosis membrane module, energy recycle device, medicine system, flushing cleaning system
System, blind controller system etc..
In the application, the first counter-infiltration system 20 has desalination water output and strong brine delivery outlet.Desalinate water output
Be connected with the first desalination waterpipe 21, the first desalination waterpipe 21 passes through pretreatment system 10, and can with pretreatment system 10
Seawater to make heat exchange.
Mechanical compress evaporation concentration system 30 is connected with strong brine delivery outlet, for being concentrated to strong brine.Salt manufacturing and
Salt chemical engineering system 40 is connected with mechanical compress evaporation concentration system 30, for preparing refined salt and salinization using the strong brine after concentrating
Chemical product.
At work, seawater is integrated seawater resources utilization system disclosed in the embodiment of the present application by pretreatment
Entered after the pretreatment of system 10 in the first counter-infiltration system 20, the first counter-infiltration system 20 implements reverse-osmosis treated to seawater, obtains
To strong brine and desalination water, desalination water can be conveyed to user by the first desalination waterpipe 21, be obtained by reverse-osmosis treated
Desalination coolant-temperature gage it is higher, first desalination waterpipe 21 can to pass through pretreatment system 10, and with the sea in pretreatment system 10
After water heat exchange, after heat exchange, the ocean temperature rise in pretreatment system 10, and then improve ultrafiltration and follow-up counter-infiltration system
Operational efficiency, while realize making full use of for desalination water energy.Salt manufacturing and salt chemical engineering system 40 can be utilized through mechanical compress
Strong brine after evaporation concentration system 30 concentrates carries out preparing refined salt and salt chemical product.As it can be seen that disclosed in the embodiment of the present application
System can realize sea water desalination, while the accessory substance of sea water desalination can also be made full use of to carry out the system of refined salt and salt chemical product
Standby, whole processing procedure can realize the comprehensive utilization of seawater, achieve the purpose that to make full use of seawater resources, and substantially
Reach zero-emission.Therefore, integrated seawater resources utilization system disclosed in the embodiment of the present application, can solve current seawater
Desalinate the problem of influencing marine ecology there are the strong brine that resource utilization is relatively low and sea water desalination is discharged.
As described above, pretreatment includes filter operation, and correspondingly, pretreatment system 10 includes filtration apparatus, filtering dress
It can be the various common filters suitable for sea water filter to put.Pretreatment can also include other handling seawater
Operation, such as coagulation operation, sterilizing operation etc..Please refer to Fig.2, the embodiment of the present application discloses a kind of pretreatment system of concrete structure
System 10, pretreatment system 10 can include coagulative precipitation device 11, heat exchanger 12 and ultrafiltration apparatus 13.Coagulative precipitation device 11 is used
In carrying out coagulating sedimentation to seawater, heat exchanger 12 and ultrafiltration apparatus 13 are connected to the outlet of coagulative precipitation device 11 in turn.Heat exchange
The desalination water and the seawater to make heat exchange by coagulating sedimentation, ultrafiltration apparatus 13 that device 12 is used for realization in the first desalination waterpipe 21 are used for
Hyperfiltration treatment is implemented to the seawater after heat exchange.
Heat exchanger 12 can be by the thermal energy conduction of the desalination water in the first desalination waterpipe 21 to the sea of pretreatment system 10
In water, and then the operational efficiency of 13 and first counter-infiltration system 20 of ultrafiltration apparatus can be improved, reduce the energy consumption of whole system.One
In kind application scenarios, temperature can lift 13 DEG C after the seawater to make heat exchange in pretreatment system 10.
Ultrafiltration apparatus 13 can prevent to be more than 0.01 μm of inorganic or organic impurities by ultrafiltration membrane using physical method, can
For removing the suspended particulates in seawater, colloid, microorganism etc..Hydrone and small-molecule substance can be saturating under the action of hydraulic pressure
Cross ultrafiltration membrane, suspended particulates, colloid, microorganism in seawater etc. are then trapped within the inner surface of ultrafiltration membrane.Ultrafiltration apparatus 13 has
Have and efficiently separate performance, the security performance of height, reliability, therefore apply more and more widely in reverse osmosis pretreatment.Adopt
By the use of ultrafiltration as reverse osmosis pretreatment, traditional multistage filtering technique can be acted on behalf of, and then reverse osmosis pollution pressure can be mitigated
Power.
In preferable scheme, pretreatment system 10 can also include ultrafiltration cold water tank 14 and ultrafiltration hot-water cylinder 15, and ultrafiltration is cold
Water pot 14 and ultrafiltration hot-water cylinder 15 are connected in turn between heat exchanger 12 and ultrafiltration apparatus 13, ultrafiltration cold water tank 14 and ultrafiltration hot water
Water pipeline between tank 15 can exchange heat with salt manufacturing and salt chemical engineering system 40.Salt manufacturing and salt making system 40 are during work
Indirect steam can be produced, which further heats pre- place using the indirect steam that salt manufacturing and salt chemical engineering system 40 generate
Seawater in reason system 10, and then the operational efficiency of 10 and first counter-infiltration system 20 of pretreatment system can be further improved, together
When can also further improve making full use of for the energy.
Integrated seawater resources utilization system can also include deionized water system 50 disclosed in the embodiment of the present application,
Deionized water system 50 is connected with desalination water output by the second desalination waterpipe 22, the second desalination waterpipe 22 and first light
It is in parallel to change waterpipe 21.Deionized water system 50 is used to carry out at deionization the desalination water that the second desalination waterpipe 22 is discharged
Reason, and then obtain deionized water.As it can be seen that the desalination water part that the first counter-infiltration system 20 produces can pass through the first desalination water
After pipeline 21 is exchanged heat with pretreatment system 10, user is delivered directly to.Another part can pass through the second desalination waterpipe
22 obtain deionized water after the processing of deionized water system 50.
A kind of specific embodiment is：Deionized water system 50 can include the second counter-infiltration system 51 and continuous electricity removes
Salt system 52, as shown in Figure 1.Second counter-infiltration system 51 and continuous electric desalination system 52 are in the second current for desalinating waterpipe 22
It is sequentially arranged on direction.In the application, the second counter-infiltration system 51 can use level-one three-stage counter-infiltration system, Water Sproading rate
Up to more than 95%.Example is largely removed in the desalination water handled by the second counter-infiltration system 51, and the water of generation reaches
The inflow requirement of continuous electric desalination system 52.
Continuous electric desalination system 52 uses continuous electric desalination technology, and continuous electric desalination technology is a kind of by ion exchange skill
The pure water manufacturing technology that art, ion exchange membrane technology and ion electromigration techniques are combined, it is cleverly by electrodialysis and ion
Switching technology is combined, and moves band ion in water using two end electrodes high pressure, and coordinate exchanger resin and selective membrane to add
Fast ion movement removes, so as to achieve the purpose that water purifies.During continuous electric desalination, ion under electric field action by from
Proton exchange is eliminated.Meanwhile hydrone produces hydrogen ion and hydroxide ion under electric field action, these ion pair ions are handed over
Change resin to regenerate into Line Continuity, so that ion exchange resin keeps optimum state.The desalination rate of continuous electric desalination system 52 can
To be up to more than 99%, just one-step desalting is carried out to water using reverse osmosis equipment before the processing of continuous electric desalination system 52, then through even
Continuous 52 desalination of electrodeionization can produce resistivity up into the ultra-pure water of more than 18M.cm.
Referring again to Fig. 1, in system disclosed in the embodiment of the present application, salt manufacturing and salt chemical engineering system 40 can include and machine
30 sequentially connected mechanical compress of tool Compression Evaporation concentration systems evaporation salt making system 41, multiple-effect evaporation potassium chloride system 42,
Bromine system 43 and evaporation magnesium chloride system 44.
Mechanical compress evaporation concentration system (i.e. MVR systems) 30 is used to be compressed evaporation process to strong brine, using machine
Tool vapor recompression technique, it is therefore an objective to strong brine is further concentrated, in a kind of application scenarios, mechanical compress evaporation concentration system
The strong brine (being referred to as bittern) of 8.9 ° of B é is concentrated into the strong brine of 25 ° of B é by 30, and then is supplied to mechanical compress to evaporate
Salt making system 41.Mechanical compress evaporation concentration system 30 can use downward film evaporator, and be recycled by mechanical vapor-compression
Heat.Specifically, mechanical compress evaporation concentration system 30 can include heat-exchanger rig, degassing tower, compressor, circulating pump, waterpower
The equipment such as cyclone.MVR systems before being initiated, can add calcium sulfate crystal seed to entering in bittern therein, the purpose is to
To ensure that a controllable calcium sulphate crystal separates out environment, prevent crystal in scaling of heat transfer pipe.During operation, Ke Yili
Controlled with hydrocyclone inside evaporator in a stable TSS level, ensure that MVR systems can transport steadily in the long term
OK.
Mechanical compress evaporation salt making system 41 is connected with mechanical compress evaporation concentration system 30, for producing calcium sulfate and essence
Salt manufacturing.The strong brine handled by mechanical compress evaporation concentration system 30 enters in mechanical compress evaporation salt making system 41, uses
Mechanical compress evaporation, crystallization processes prepare purified salt, obtain refined salt, isolate calcium sulfate, obtain the bittern of concentration higher.It is a kind of
In application scenarios, the bittern of 25 ° of B é that mechanical compress evaporation salt making system 41 produces mechanical compress evaporation concentration system 30 into
Row processing, obtains purified salt and calcium sulfate, and the strong brine (being properly termed as bittern) of 31.5 ° of B é of output is to be transported to multiple-effect evaporation
In potassium chloride system 42 processed.
Mechanical compress evaporation salt making system 41 includes heat-exchanger rig, evaporator, flash tank, centrifuge, settler, centrifugation
Machine, compressor, pump and aeration tower.Heat-exchanger rig is used to exchange heat with the strong brine Jing Guo concentration, 25 ° after concentration
The bittern (strong brine) of B é exchanges heat to boiling temperature by heat-exchanger rig with time condensation water, into evaporator.Evaporator with
Mechanical compress evaporation concentration system connects, for receiving the strong brine after exchanging heat with heat-exchanger rig；Evaporator is used for dense
Brine is evaporated with precipitated sodium chloride crystal；Centrifuge is connected by pumping with evaporator, to receive the chlorination of evaporator generation
Sodium salt is starched, and sodium chloride salt slurry is carried out centrifugal dehydration, obtains refined product salt；Settler is connected with evaporator, for receiving
The bittern containing calcium sulfate of evaporator discharge, and calcium sulfate is isolated, and obtain clarified solution；Flash tank and settler phase
Even, for the precipitated sodium chloride crystal from clarified solution；Flash tank is connected with the centrifuge, and centrifuge, which is used to separate to prepare, to be refined
Product salt.
Flash 31.5 ° of obtained B é bitterns and enter follow-up multiple-effect evaporation potassium chloride system.The steam produced from evaporator
The bittern drop of entrainment is removed into gas washing tower apparatus, subsequently into compressor, the steam after compressor compresses enters
In evaporator.The indirect steam that evaporator produces provides heat by compressor compresses Posterior circle to evaporator, so as to reduce
Mechanical compress evaporates demand of the salt making system 41 to extra power.
Multiple-effect evaporation potassium chloride system 42 uses adding halogen method and triple effect evaporation technique preparing potassium chloride, while by-product sulfuric acid
Magnesium.The carnallite mother solution of high content of magnesium chloride is mixed in bittern, the Mixed bittern than being clarified is mixed by control, into three
Vaporising device is imitated, large quantity of moisture is evaporated under high-boiling state, sodium chloride is fully separated out with magnesium sulfate, through centrifugation apparatus
Isolated sodium chloride and magnesium sulfate.Clarified solution further separates out carnallite (KClMgCl through cooling and crystallizing process2·6H2O),
Carnallite hydrolyzable obtains product potassium chloride.
Bromine system 43 is used to produce bromine, specifically, bromine system 43 can use Air blowing alkaline process by bromine and dense
Thick halogen separation.Contain a certain amount of bromide ion in dense halogen, can be by obtaining bromine simple substance after being acidified, aoxidizing.After acidifying, oxidation
Dense halogen obtain certain density absorption rich in dissolubility bromide through stripping tower and complete liquid, enter destilling tower afterwards and acid react
Obtain bromine simple substance, by condensing, separating, rectifying can finally obtain the preferable bromine simple substance of quality, separate dense after bromine simple substance
Halogen is delivered in evaporation magnesium chloride system 44 as mother liquid of magnesium processed by pump.
Evaporation magnesium chloride system 44 processed is used to produce magnesium chloride, and the mother liquid of magnesium processed from bromine system 43 is undersaturated
MgCl2Solution.The disclosed evaporation magnesium chloride system 44 processed of the embodiment of the present application carries out magnesium chloride using single-action negative pressure evaporation technique
Preparation, evaporation complete after enter pelletizer prepare magnesium chloride product.
In the embodiment of the present application, mechanical compress evaporation salt making system 41, multiple-effect evaporation potassium chloride system 42, bromine system
43 and to evaporate magnesium chloride system 44 processed be main salt chemical engineering equipment, mechanical compress evaporation salt making system 41, multiple-effect evaporation chlorine
Change potassium system 42, bromine system 43 and evaporation magnesium chloride system 44 due to working mechanism, two can be produced during work
Secondary steam, these indirect steams are respectively enterd in the above-mentioned respective heat exchanger of each system, and with passing through pretreatment system 10
Seawater to make heat exchange, the condensed water after heat exchange are imported in the condensing water conduit 46 of salt manufacturing and salt chemical engineering system 40.Above-mentioned indirect steam
The heat exchange with the former seawater in pretreatment system 10 is realized under the guiding of pipeline 45.
Mechanical compress evaporation salt making system 41, multiple-effect evaporation potassium chloride system 42, bromine system 43 and evaporation chlorination
The condensation-water drain of magnesium system 44 connects the condensing water conduit 46 of salt manufacturing and salt chemical engineering system 40.
Pipeline 45 can exchange heat to pass through pretreatment system 10 with it, be connected after heat exchange with condensing water conduit 46, condensate pipe
Road 46 exchanges heat with mechanical compress evaporation concentration system 30, and condensing water conduit 46 is connected with the second counter-infiltration system 51, is used for
Condensed water after heat exchange is input in deionized water system 50.Pipeline 45 exchanges heat through pretreatment system 10, Jin Erneng
The ocean temperature in pretreatment system 10 is improved, improves pretreating effect.
The condensed water that pipeline 45 generates after exchanging heat with pretreatment system 10 can also be by condensing water conduit 46 and machinery pressure
Contracting evaporation concentration system 30 exchanges heat, and then the bittern at the charging of heated mechanical Compression Evaporation concentration systems 30, Jin Erti
The efficiency of high mechanical compress evaporation concentration system 30 so that the heat of indirect steam and each system condensing water out in pipeline 45
Derived condensed water heat is fully used.Condensed water after above-mentioned heat exchange can enter in the second counter-infiltration system 51 with for
Prepare deionized water.The condensate pipe of itself of mechanical compress evaporation concentration system 30 can also be connected with deionized water system 50,
The condensed water that mechanical compress evaporation concentration system 30 produces can be also inputted in deionized water system 50.This can improve whole one again
Change the Water Sproading rate of seawater resources utilization system.In the preferred solution, the desalination water source of deionized water system 50 can be with
The condensed water of part desalination water, mechanical compress evaporation concentration system 30 for the first counter-infiltration system 20, and salt chemical engineering system
Pipeline 45 by heat exchange generation condensed water.
Integrated seawater resources utilization system can realize the zero-emission of sea water desalination disclosed in the embodiment of the present application,
It can not only solve the problems, such as influence of the sea water desalination to environment, but also there is quite high economic benefit.
Herein, only emphasis describes difference with other preferred solutions, each preferred solution to each preferred solution
As long as not conflicting, it can be combined, the embodiment formed after combination also within category disclosed in this specification, is examined
Consider that text is succinct, herein with regard to no longer individually being described to combining formed embodiment.
The foregoing is merely embodiments herein, is not limited to the application.For those skilled in the art
For, the application can have various modifications and variations.All any modifications made within spirit herein and principle, be equal
Replace, improve etc., it should be included within the scope of claims hereof.
Claims (8)
1. integrated seawater resources utilization system, it is characterised in that including pretreatment system, the first counter-infiltration system, machine
Tool Compression Evaporation concentration systems and salt manufacturing and salt chemical engineering system, wherein, the pretreatment system is used to pre-process seawater,
First counter-infiltration system is connected with the pretreatment system, and first counter-infiltration system is used for by pretreatment
Seawater implements reverse-osmosis treated to obtain desalination water and strong brine；First counter-infiltration system has desalination water output and dense
Salt water output, the desalination water output are connected with the first desalination waterpipe, and the first desalination waterpipe passes through described pre-
Processing system, and can be with the seawater to make heat exchange in the pretreatment system；The mechanical compress evaporation concentration system and the salt manufacturing
It is connected with salt chemical engineering system, the mechanical compress evaporation concentration system is connected with the strong brine delivery outlet, for strong brine
Concentrated；The salt manufacturing is used to prepare refined salt and salt chemical product using the strong brine after concentration with salt chemical engineering system.
2. system according to claim 1, it is characterised in that the pretreatment system includes coagulative precipitation device, heat exchange
Device and ultrafiltration apparatus；Wherein, the coagulative precipitation device is used to carry out coagulating sedimentation, the heat exchanger and the ultrafiltration to seawater
Device is connected to the outlet of the coagulative precipitation device in turn；The heat exchanger is used for realization in the first desalination waterpipe
Desalination water and the seawater to make heat exchange by coagulating sedimentation；The ultrafiltration apparatus is used to implement at ultrafiltration the seawater after heat exchange
Reason.
3. system according to claim 2, it is characterised in that the pretreatment system further includes ultrafiltration cold water tank and ultrafiltration
Hot-water cylinder, the ultrafiltration cold water tank and the ultrafiltration hot-water cylinder are connected in turn between the heat exchanger and the ultrafiltration apparatus,
Two caused by water pipeline and the salt manufacturing and salt chemical engineering system between the ultrafiltration cold water tank and the ultrafiltration hot-water cylinder
Secondary steam heat-exchanging.
4. system according to claim 3, it is characterised in that the integration seawater resources utilization system further includes
Deionized water system, the deionized water system are connected with the desalination water output by the second desalination waterpipe, and described the
Two desalination waterpipes are in parallel with the described first desalination waterpipe；The deionized water system is used for the described second desalination waterpipe
The desalination water of discharge carries out deionization processing to obtain deionized water.
5. system according to claim 4, it is characterised in that the deionized water system include the second counter-infiltration system and
Continuous electric desalination system, wherein, second counter-infiltration system and continuous electric desalination system are in the described second desalination waterpipe
It is sequentially arranged in water (flow) direction.
6. system according to claim 5, it is characterised in that the salt manufacturing and salt chemical engineering system include the machine being sequentially connected
Tool Compression Evaporation salt making system, multiple-effect evaporation potassium chloride system, bromine system and evaporation magnesium chloride system；The machinery pressure
Contracting evaporation salt making system is connected with the mechanical compress evaporation concentration system, and for producing purified salt and calcium sulfate；It is described more
Effect evaporation potassium chloride system is used to produce potassium chloride and magnesium sulfate；The bromine system is used to produce bromine, the evaporation system
Magnesium chloride system is used to produce magnesium chloride；
Mechanical compress evaporation salt making system, the multiple-effect evaporation potassium chloride system, the bromine system and the evaporation
The indirect steam of magnesium chloride system processed respectively enters respective heat exchanger, and with through the pretreated seawater of the pretreatment system
Heat exchange, the condensed water after heat exchange import the condensing water conduit of the salt manufacturing and salt chemical engineering system；
Mechanical compress evaporation salt making system, the multiple-effect evaporation potassium chloride system, the bromine system and the evaporation
The condensation-water drain of magnesium chloride system processed connects the condensing water conduit of the salt manufacturing and salt chemical engineering system.
7. system according to claim 6, it is characterised in that the salt manufacturing and the condensing water conduit of salt chemical engineering system pass through
To exchange heat, the condensing water conduit connects the mechanical compress evaporation concentration system with second counter-infiltration system, uses
In the condensed water is inputted the deionized water system.
8. system according to claim 6, it is characterised in that the mechanical compress evaporation salt making system includes heat exchange and fills
Put, evaporator, flash tank, centrifuge, settler, compressor, pump and aeration tower；Wherein, the heat-exchanger rig is used for and process
The strong brine heat exchange of concentration；The evaporator is connected with the mechanical compress evaporation concentration system, for receive by with
The strong brine after the heat-exchanger rig heat exchange；The evaporator is used to be evaporated with precipitated sodium chloride the strong brine
Crystal；The centrifuge is connected by the pump with the evaporator, to receive the sodium chloride salt slurry of the evaporator generation, and
Sodium chloride salt slurry is subjected to centrifugal dehydration, obtains refined product salt；
The settler is connected with the evaporator, for receiving the bittern containing calcium sulfate of the evaporator discharge, and divides
Calcium sulfate is separated out, and obtains clarified solution；The flash tank is connected with the settler, for separating out chlorine from the clarified solution
Change sodium crystal；The flash tank is connected with the centrifuge, and the centrifuge, which is used to separate, prepares refined product salt.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534568A (en) * | 2017-09-22 | 2019-03-29 | 金達行有限公司 | Integrated seawater resources utilization system |
| CN111747568A (en) * | 2020-07-06 | 2020-10-09 | 金盛海洋科技有限公司 | Large-scale continuous seawater salt manufacturing bittern refining system |
-
2017
- 2017-09-22 CN CN201721231135.4U patent/CN207259308U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109534568A (en) * | 2017-09-22 | 2019-03-29 | 金達行有限公司 | Integrated seawater resources utilization system |
| CN111747568A (en) * | 2020-07-06 | 2020-10-09 | 金盛海洋科技有限公司 | Large-scale continuous seawater salt manufacturing bittern refining system |
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