CN109647206A - Deep-sea reverse osmosis desalination device and its method - Google Patents
Deep-sea reverse osmosis desalination device and its method Download PDFInfo
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- CN109647206A CN109647206A CN201910098873.3A CN201910098873A CN109647206A CN 109647206 A CN109647206 A CN 109647206A CN 201910098873 A CN201910098873 A CN 201910098873A CN 109647206 A CN109647206 A CN 109647206A
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- 238000001223 reverse osmosis Methods 0.000 title claims abstract description 57
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 53
- 238000000034 method Methods 0.000 title claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 199
- 239000013535 sea water Substances 0.000 claims abstract description 113
- 239000013505 freshwater Substances 0.000 claims abstract description 111
- 239000012528 membrane Substances 0.000 claims abstract description 47
- 238000004140 cleaning Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 13
- 238000012423 maintenance Methods 0.000 claims abstract description 10
- 238000003860 storage Methods 0.000 claims abstract description 10
- 238000012546 transfer Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims description 25
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 11
- 238000011033 desalting Methods 0.000 claims description 7
- 230000003204 osmotic effect Effects 0.000 claims description 6
- 239000003814 drug Substances 0.000 claims description 4
- 229940079593 drug Drugs 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 4
- 238000011084 recovery Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 230000002411 adverse Effects 0.000 claims description 2
- 238000004873 anchoring Methods 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 239000012535 impurity Substances 0.000 claims description 2
- 238000012806 monitoring device Methods 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000008439 repair process Effects 0.000 claims description 2
- 239000013589 supplement Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 7
- 238000005265 energy consumption Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 230000002829 reductive effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 208000035126 Facies Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001010 compromised effect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/12—Controlling or regulating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The present invention relates to a kind of deep-sea reverse osmosis desalination device, lifting device, freshwater storage water tank are placed on semi-submersible offshore platform；Device noumenon is placed in outline border, and outline border is connect by hoist cable with lifting device；Device noumenon submerges in the seawater with outline border, and can go up and down with hoist cable；The filter box of device noumenon is connected to seawater water inlet manifold road；Filter box, intake pump, heating device, reverse-osmosis membrane element are sequentially connected；Reverse-osmosis membrane element is divided into three branches, and the first branch is connected to fresh water tanks, and second branch is connected to concentrated seawater discharge tube, and third branch is connected to resorption water tank；Fresh water tanks are connect with air hose, and air hose is communicated with the atmosphere；Fresh water tanks also pass through high-pressure pump and fresh water transfer pipeline is connect with freshwater storage water tank.Solving device of the present invention places the difficult problem of deep-sea bring maintenance cleaning；It solves the problem of that seawater water temperature is low and bring low-yield water rate, high intake pressure demand and increases membrane component number and resulting increase cost.
Description
Technical field
The present invention relates to a kind of desalination plants, and in particular to a kind of deep-sea reverse osmosis desalination device.
Background technique
Deep-sea reverse osmosis desalination device is placed in deep-sea, makes seawater through reverse osmosis membrane using deep-sea nature hydrostatic pressing
Output fresh water, greatly reduces energy consumption.Simultaneously because deep sea water is very clean, filtering roughly can be needed without pretreatment or only i.e.
Production water can be carried out, the pollution that the cleaning of water inlet also reduces film may.Again because eliminating into high-pressure water pump, generated by its vibration
Pulsating pressure waves and the problem of reducing membranous system overall performance, service life, are also solved, and device is placed in deep-sea and is provided with
The advantages such as insulating noise are a kind of low energy consumption, environmentally protective desalination technology.
Existing deep-sea reverse osmosis desalination device has the following problems:
1) it is placed on the difficulty of deep-sea maintenance cleaning；
2) deep sea water temperature is low causes device capbility to reduce: in 500 meters or so of deep-sea depth, water temperature will be less than 10 DEG C,
And reverse osmosis membrane working performance and inflow temperature correlation are very big, in certain temperature range endomembrane system when other conditions are constant
Permeant flux is proportional to substantially with water temperature, therefore the low temperature of deep sea water will cause deep sea water under same water yield demand
Intake pressure needed for desalting plant, membrane component number increase, and then increase cost；
3) the high salinity concentrated seawater that deep-sea reverse osmosis unit is discharged under water may be influenced into water seawater flow field and be caused
Salinity of intaking increases, and then influences to produce water salt content and bring deleterious effect to the operation of device, while with deep sea water
Into reverse osmosis unit output fresh water, the pressure of strong brine can be lower than extraneous seawater at discharge outlet, thus needs concentrated water draining pump
Pressurization auxiliary concentrated water discharge, and be that the influence for preventing from draining to water inlet flow field needs to keep discharge outlet at a distance from water inlet,
If the increase of the two vertical distance will make discharge outlet in face of bigger extraneous water pressure, namely increase the energy to concentrated water draining pump
Consumption demand；
4) hyperbaric environment at deep-sea also proposes strict demand to the pressure-resistant performance of device materials, but manufactures and designs volume
Huge high-pressure-resistant vessel also greatly increases cost.
Summary of the invention
The object of the present invention is to provide a kind of deep-sea reverse osmosis desalination device, monitoring, the work of control desalination system
State guarantees that each operating parameter of membranous system is within the scope of service condition, meets highest recovery, flux peak, minimum concentrated water
Flow and the requirement of highest flow of inlet water, and avoid generating back pressure, it reduces dirt and blocks up, prevent membrane component mechanical failure；Solving device is put
Set the difficult problem of deep-sea bring maintenance cleaning；Solve deep-sea reverse osmosis desalination device face by deep sea water water temperature
The problem of low and bring low-yield water rate, high intake pressure demand and membrane component number needed for increasing and it is resulting at
The problem of this increase；Solve the problems, such as that desalting plant concentrated water discharge may will affect device seawater water inlet flow field；The row of solution
The vertical distance the big between the mouth of a river and water inlet more is conducive to exclude influence of the concentrated water to water inlet, but simultaneously can be due to discharge outlet outside
The contradiction for increasing and the energy requirements of concentrated water draining pump being unfavorable for reduction energy consumption that becomes larger of boundary's seawater pressure.
The present invention takes following technical scheme:
A kind of deep-sea reverse osmosis desalination device, lifting device 6, freshwater storage water tank 8 are placed in semi-submersible offshore platform
On；Device noumenon is placed in outline border 11, and outline border 11 is connect by hoist cable 9 with lifting device 6；Device noumenon is immersed in sea with outline border
In water, and it can be gone up and down with hoist cable 9；Described device ontology includes filter box 12, and filter box 12 is connected to seawater water inlet manifold road 24；Filter
Case 12, intake pump 18, heating device 28, reverse-osmosis membrane element 14 are sequentially connected；The reverse-osmosis membrane element 14 divides for three branches,
The first branch is connected to fresh water tanks 15, and second branch is connected to concentrated seawater discharge tube 10, third branch and resorption water tank 13
Connection；Fresh water tanks 15 are connect with air hose 21, and air hose 21 is communicated with the atmosphere；Fresh water tanks 15 are also by high-pressure pump 22 and light
Water transfer pipeline is connect with the freshwater storage water tank 8.
Further, desalination Membrane cleaning drug is added in the resorption water tank 13, resorption water is opened when intake pump 18 is shut down
The valve of 13 roads of case, and close and the valve 41 in the fresh water water production pipeline 40 of fresh water tanks 15 is led to by reverse osmosis membrane 14,
Fresh water in resorption water tank 13 will clean membrane component to reverse-osmosis membrane element 14 because natural osmosis flows back, and prevent
The problems such as reflux of production water brings air into membrane component and damages membrane component is stopped.
Further, heating device 28 is set on seawater inlet pipeline, and temperature sensor is set at heating device 28
29。
Further, concentrated seawater discharge tube 10 is that diagonally downward, direction is simultaneously on horizontal, vertical direction far from sea
The seawater water inlet in water water inlet manifold road 24,10 discharge outlet of concentrated seawater discharge tube in the vertical direction far from 10 meters of water inlet with
On, concentrated seawater discharge tube 10 gos deep into deep-sea in 60 ° of angle with vertical direction.
Further, described device ontology is divided into seawater inlet pipeline module, desalination film unit module, fresh water production water and defeated
Send module, fresh water resorption water tank module, concentrated seawater discharge module, seven part of control module and outline border module；The seawater into
Water lines module includes seawater water inlet manifold road 24 and the water inlet electronic flow valve 38 being arranged thereon, filter box 12, intake pump 18, into
First electronic pressure gage 25 of water pump front tube road setting, the second electronic pressure gage that intake pump rear tube road is set gradually
26, flowmeter a27, heating equipment 28 and water temperature sensor 29；The desalination film module includes the reverse osmosis that several groups are arranged in parallel
Permeable membrane unit 14；The fresh water production water and output module include on the fresh water production water outlet pipe road of every reverse osmosis membrane unit 14
Flowmeter b30, the valve 41 being respectively mounted, fresh water water production pipeline 40 and fresh water tanks connected to it 15, on fresh water tanks 15
Air hose 21, the pressure sensor 31 on fresh water tanks 15, and the fresh water water delivery high pressure pump module being connect with fresh water tanks 15；
Wherein fresh water water delivery high pressure pump module includes high-pressure pump 22, the third electronic pressure gage 33 of high-pressure pump front, high-pressure pump rear portion according to
The 4th electronic pressure gage 34, the check-valves 35 of secondary setting, and with by high-pressure pump with the freshwater storage water on the semisubmersible platform of top
The connected fresh water transfer pipeline 20 of case 8；The fresh water resorption tank module includes fresh water resorption water tank 13, before fresh water resorption water tank 13
The pressure sensor 32 of 13 rear end of valve 39 and fresh water resorption water tank at end；Concentrated seawater discharge module includes concentrated seawater pump 17,
Concentrated seawater pumps concentrated seawater pipeline flowmeter 38, the concentrated seawater flow control valve 37 that 17 front ends are set gradually, concentrated seawater discharge tube
10 and 10 end of concentrated seawater discharge tube concentrated water pipeline check-valves 36；Control module includes control cabinet 16 and is connected to
The cable 19 of power supply box on portion's platform；Outline border module includes outline border 11 and the hoist cable 9.
Further, power supply box 7 is additionally provided on semi-submersible offshore platform.
Further, cable 19, fresh water water-supply-pipe 20 and 21 3 pipeline of air hose extend into half in the form of umbilical cables
On submersible ocean platform.
Further, semisubmersible platform consists of three parts: Texas deck 1, column 2 and buoyancy tank 3, Texas deck 1 with
Buoyancy tank 3 is connected by column 2, and semisubmersible platform is fixed by being connected to 4 anchoring system of anchor chain in seabed.
Further, each module carried out high pressure resistant processing respectively, was repaired in device light maintenance using underwater robot
Replace the component in each module or module, described device ontology is raised on platform by when overhaul by lifting device.
The beneficial effects of the present invention are:
1) the problem of in view of deep-sea reverse osmosis desalination device in face of cleaning maintenance difficult, by desalting plant and ocean
Platform is combined by lifting device with hoist cable, realizes the liftable of desalting plant, is solved it by lifting and is cleaned maintenance difficult
The problem of.
2) by semi-submersible offshore platform in conjunction with the reverse osmosis desalination device of deep-sea, the offshore oil at the South Sea can be both realized
Exploitation is realized again to the South Sea depth of water and water temperature advantage using sea water desalination is carried out, and becomes sharp conducive to the development of resources of China South Sea
Sharp weapon.
3) it considers influence of the low water temperature in deep-sea to reverse-osmosis desalination device, and chooses specific reverse osmosis membrane and carry out research meter
It calculates, has probed into inflow temperature to required intake pressure namely the required shadow for placing water layer in conjunction with South Sea water temperature hydraulic pressure measured data
It rings, heating device and water temperature sensor is set in device water inlet, rationally improves inflow temperature, intake pressure demand can be reduced simultaneously
Producing water ratio is improved, while device can be run in more shallow water layer, and then the high pressure resistant requirement of device materials is reduced, is realized
Cost reduces.
4) branch is set in fresh water production water lines and connects fresh water resorption water tank, it is therefore prevented that when shutdown under naturally osmotic effect
It produces water and flows back into a series of problems, such as membrane component may bring air into and damage membrane component.
5) add cleaning drug in fresh water resorption water tank, can make the cleaning drug in water tank natural in system closedown
Membrane component is flowed under osmosis and realizes cleaning, conducive to reducing energy consumption and reducing the frequency cleaned by lifting device.
6) concentrated water discharge pipe design is at oblique form, and concentrated water discharge outlet is simultaneously far from seawater in vertical, horizontal direction
Water inlet, inclined drainage pipeline form can also reduce the discharge outlet and water inlet for preventing concentrated seawater from interfering with into satisfaction needed for water
Vertical distance, and then reduce concentrated water draining pump boost demand, concentrated water can be made to be discharged with lower energy consumption and prevent from draining
Water inlet flow field and water quality are had an impact.
7) desalting plant modularized design, device are divided into seawater inlet pipeline module, desalination film unit module, fresh water production water
And conveyor module, fresh water resorption water tank module, concentrated seawater discharge module, seven part of control module and outline border, to each section point
High pressure resistant processing is not carried out, and the construction of large volume pressure vessel is avoided to need and then is conducive to the reduction of construction cost.
8) modular to design the maintenance for being additionally favorable for device, underwater robot can be used in device light maintenance and repair replacement member
Device, without being promoted device onto upper brace, overhaul Shi Zeke passes through lifting device again and device is raised on platform.
Detailed description of the invention
Fig. 1 is 18.006 ° of South Sea N, the required intake pressures of 115.999 ° of E different depth water layer thermohaline conditions and water layer
Actual pressure schematic diagram.
Fig. 2 be with 18.006 ° of South Sea N, increase under 115.999 ° of E, the 510 meters of depth of water Variation of Salinity Condition inflow temperature to it is required into
The influence schematic diagram of water pressure.
Fig. 3 is reverse osmosis desalination device axonometric drawing in deep-sea of the present invention.
Fig. 4 is reverse osmosis desalination device main view in deep-sea of the present invention.
Fig. 5 is the schematic diagram of device noumenon.
Fig. 6 is the schematic diagram under another visual angle of device noumenon.
Fig. 7 is the main view of device noumenon.
Fig. 8 is the structure chart for the section components that device noumenon is set in outline border.
Fig. 9 is the schematic diagram of device noumenon part-structure.
Figure 10 is the schematic diagram of device noumenon part-structure.
Figure 11 is reverse osmosis desalination device schematic diagram in deep-sea of the present invention.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific examples.
Referring to Fig. 1-11, the present apparatus hangs on South Sea deep-sea by the connection of hoist cable 9 by the lifting device 6 on semisubmersible platform
At the about 500-550m depth of waters, this depth seawater pressure meets required anti-when the progress sea water desalination of reverse osmosis membrane unit 18
Osmotic pressure.
When the electromagnetic flow valve 38 and the opening of intake pump 18 on inlet pipeline 24, high pressure sea water is by seawater water inlet manifold road
It is simply pre-processed into filter box 12, filters out possible impurity, then again conveyed seawater by intake pump 18 and pipeline
To reverse osmosis membrane unit 14.Water pressure when two electronic pressure gages 25,26 monitor seawater into and out of intake pump respectively, and cooperate with
The water inlet for the production water pressure monitoring device that the electronic pressure gage of water producing pipe road is measured and the pressure difference for producing water.Water inlet start-stop and flow
Size controlled by water inlet electronic flow valve 38.Additionally by the heating equipment 28 and water temperature sensing on seawater inlet pipeline
The cooperation of device 29, the temperature for promoting water inlet seawater in a certain range guarantee the working efficiency of desalination film.
The high pressure sea water of desalination by reverse osmosis film unit 14 is delivered to by output fresh water after the desalination of desalination film and concentrated seawater is discharged.
Wherein fresh water is conveyed through such process: the fresh water production water flow of every reverse-osmosis membrane element can be by installing on pipeline
Flowmeter 30 is measured, and the fresh water production water of each branch membrane component imports total water producing pipe 40 and is transported in fresh-water tank 15.Fresh water tanks 15
It is connected with high-pressure pump 22, electronic pressure gage 33 is also equipped on connecting line, fresh water is conveyed by high-pressure pump along fresh water transfer pipeline 20
In freshwater storage water tank 8 on to semisubmersible platform.Check-valves 35 is equipped on fresh water transfer pipeline 20 to be prevented under fortuitous event
Fresh water reflux.Air hose 21 is connected on fresh water tanks 15, air hose is connected upwardly to platform upper, and system produces fresh water in water
Pressure keeps an atmospheric pressure in water tank 15.Pressure is by being mounted on the pressure sensor monitoring of water tank upper in fresh water tanks
31。
Valve 39 when device is shut down in fresh water resorption water tank module on pipeline is opened and the valve in fresh water production water lines
41 close, and the fresh water in resorption water tank 13 can flow into reverse-osmosis membrane element since naturally osmotic acts on, at this time in resorption water tank
Dosing fresh water can realize the cleaning to pipeline.Pressure sensor 32 for monitor and guarantee resorption water tank device will shut down with
Before be full water state, the valve first closed on fresh water line 41 is needed if being not full water state in resorption water tank and is opened light
Fresh water production water is introduced resorption water tank and supplements fresh water, shut down again after resorption water tank full water by the valve 39 of water resorption water tank branch road.
This operating process is also required to equally be switched on next time before by fresh water resorption water tank full of water.
It is not discharged through concentrated seawater pipeline then through the concentrated seawater of reverse osmosis membrane, concentrated seawater pipeline is equipped with flowmeter 38 and electricity
Magnetic current control valve 37, flowmeter 38 measure concentrated water total flow and need to meet the minimum concentrated water flow that membrane component is normally persistently run
Limitation, electromagnetic flow control valve 37 carries out flow adjusting and controls desalination system recycled in its entirety rate can be normal no more than desalination system
The highest recovery of operation.Concentrated seawater is discharged to extraneous ocean ring by 17 pressurization of concentrated seawater pump being arranged on concentrated seawater pipeline 10
In border, check-valves 36, which is arranged, in concentrated seawater pump discharge pipeline 17 prevents seawater adverse current.In addition concentrated seawater discharge of pipes outlet is deep into
On bottom of device vertical direction at about more than 10 meters of distance, 10 tilt angle of concentrated seawater pipeline is in substantially 60 ° of angles with vertical direction,
Concentrated water pipeline discharge outlet, far from seawater inlet pipeline 24, prevents the concentrated seawater of discharge from influencing device on horizontal vertical two direction
Influent quality.
The control of each electronic component is manipulated by control cabinet 12, power supply needed for package unit and the transmission of data all by
Cable 19 transmits, the connection of cable 19 and the electronic box 7 on platform.
The present invention combines reverse osmosis desalination device with semi-submersible offshore platform by lifting device and hoist cable, real
The liftable of existing device solves the maintenance cleaning difficult problem of device.At the same time, water temperature is high throughout the year at China South Sea and temperature
Change small, while the depth of water is big, and water temperature and depth condition are all fully compatible for setting for deep-sea reverse osmosis desalination device and put, by seawater
Desalting plant realizes sea water desalination while realizing the exploitation of offshore oil in conjunction with semi-submersible offshore platform again, to power-assisted I
The exploitation of state's South Sea resource has realistic meaning.
Fresh water resorption water tank is set in fresh water production water lines, it is ensured that system there will not be air to enter desalination when shutting down
The problems such as membranous system, instrument is compromised when fouling membrane caused by avoiding possibility therefore, diaphragm are dry and are switched on again.Simultaneously
By in resorption water tank dosing can realize membrane component naturally osmotic pressure effect under cleaning, be utilized naturally osmotic be pressed into and
Energy consumption is reduced, and is conducive to reduce the frequency for repairing device cleaning.
Concentrated seawater drainage pipeline is arranged to oblique form, discharge outlet can be on horizontal, vertical direction simultaneously far from seawater
Water inlet certain distance avoids concentrated water from draining the influence to flow field at seawater inlet port.Simultaneously and drainage pipeline is in the form of vertical
Go deep into pelagic facies ratio, the pipeline of oblique form makes that draining can be eliminated between discharge outlet and water inlet with smaller vertical distance
Influence to water inlet, it is meant that in face of smaller extraneous seawater pressure at discharge outlet, discharge concentrated seawater can be reduced, concentrated water is drained
The energy requirements of pump.
In view of influence of the low water temperature to device producing water ratio of deep sea water, water is set on the seawater inlet pipeline of device
Temperature sensor and heating device increase inflow temperature, solve the high intake pressure demand of low-yield water rate caused by low water temperature and increasing
The problem of blooming element number demand is to increase cost, simultaneously because required intake pressure reduces, device can be placed on phase
To more shallow water layer, the requirement to device materials voltage endurance capability can also be reduced, is also beneficial to reduce cost.
Influence about inflow temperature to device producing water ratio, to select Tao Shi sea water desalination membrane SW30HRLE-400i model
For, water temperature variation is provided to intake pressure needed for device, and to the water layer of required placement with Tao Shi film design software WAVE
Depth influence, as a result provided by Fig. 1, Fig. 2.Wherein water temperature and hydraulic pressure force data come from the Chinese Academy of Sciences, ocean, the South Sea in 2012
Section scientific investigation CTD thermohaline observes data set.The present apparatus can be verified by the way that heating device is arranged in seawater intake, promoted
Inflow temperature may make the operation of whole membranous system more efficient, while under the conditions of the fixed water yield fixed rate of recovery, water inlet
So that the intake pressure demand of device reduces, device is placed on a bit relatively more shallow water layer and can reach into water for the promotion of temperature
Pressure requirements.
It is the preferred embodiment of the present invention above, those skilled in the art can also carry out various on this basis
Transformation improves, under the premise of not departing from the present invention total design, these transformation or improve all should belong to the present invention claims
Within the scope of protection.
Claims (10)
1. a kind of deep-sea reverse osmosis desalination device, it is characterised in that:
Lifting device (6), freshwater storage water tank (8) are placed on semi-submersible offshore platform；
Device noumenon is placed in outline border (11), and outline border (11) is connect by hoist cable (9) with lifting device (6)；Device noumenon is with outer
Frame submerges in the seawater, and can go up and down with hoist cable (9)；
Described device ontology includes filter box (12), and filter box (12) is connected to seawater water inlet manifold road (24)；Filter box (12), intake pump
(18), heating device (28), reverse-osmosis membrane element (14) are sequentially connected；
The reverse-osmosis membrane element (14) is divided into three branches, and the first branch is connected to fresh water tanks (15), second branch and dense sea
Water discharge spout road (10) connection, third branch are connected to resorption water tank (13)；
Fresh water tanks (15) are connect with air hose (21), and air hose (21) is communicated with the atmosphere；Fresh water tanks (15) also pass through high pressure
Pump (22) and fresh water transfer pipeline are connect with the freshwater storage water tank (8).
2. deep-sea reverse osmosis desalination device as described in claim 1, it is characterised in that: add in the resorption water tank (13)
Enter to desalinate Membrane cleaning drug, the valve of resorption water tank (13) branch road is opened when intake pump (18) is shut down, and closes by reverse osmosis
Film (14) leads to the valve (41) in the fresh water water production pipeline (40) of fresh water tanks (15), the fresh water in resorption water tank (13) by because
Natural osmosis, which flows back, cleans membrane component to reverse-osmosis membrane element (14), and prevents and produce water reflux in membrane component
It inside brings air into and damages membrane component.
3. deep-sea reverse osmosis desalination device as described in claim 1, it is characterised in that: setting adds on seawater inlet pipeline
Thermal (28), and temperature sensor (29) are set at heating device (28).
4. deep-sea reverse osmosis desalination device as described in claim 1, it is characterised in that: concentrated seawater discharge tube (10) is
Diagonally downward, direction is simultaneously in horizontal, separate seawater water inlet manifold road (24) on vertical direction seawater water inlet, concentrated seawater
Discharge tube (10) discharge outlet is in the vertical direction far from 10 meters of water inlet or more, concentrated seawater discharge tube (10) and vertical direction
Angle in 60 ° gos deep into deep-sea.
5. deep-sea reverse osmosis desalination device as described in claim 1, it is characterised in that:
Described device ontology is divided into seawater inlet pipeline module, desalination film unit module, fresh water production water and conveyor module, fresh water and returns
Absorb water tank module, concentrated seawater discharge module, seven part of control module and outline border module；
The seawater inlet pipeline module includes seawater water inlet manifold road (24) and the water inlet electronic flow valve (38) being arranged thereon,
Filter box (12), intake pump (18), the first electronic pressure gage (25) of intake pump front tube road setting, intake pump rear tube road
The second electronic pressure gage (26), flowmeter a (27), heating equipment (28) and the water temperature sensor (29) set gradually；
The desalination film module includes the reverse osmosis membrane unit (14) that several groups are arranged in parallel；
Pacify the fresh water production water outlet pipe road that the fresh water production water and output module are included in every reverse osmosis membrane unit (14)
Flowmeter b (30), the valve (41) of dress, fresh water water production pipeline (40) and fresh water tanks connected to it (15), fresh water tanks
(15) air hose (21) on, the pressure sensor (31) on fresh water tanks (15), and connect with fresh water tanks (15) light
Water water delivery high pressure pump module；Wherein fresh water water delivery high pressure pump module includes high-pressure pump (22), the third electronics pressure of high-pressure pump front
Power table (33), the 4th electronic pressure gage (34), the check-valves (35) that high-pressure pump rear portion is set gradually, and with by high-pressure pump with top
The fresh water transfer pipeline (20) that freshwater storage water tank (8) on semisubmersible platform is connected；
The fresh water resorption tank module includes fresh water resorption water tank (13), the valve (39) of fresh water resorption water tank (13) front end, with
And the pressure sensor (32) of fresh water resorption water tank (13) rear end；
Concentrated seawater discharge module includes concentrated seawater pump (17), the concentrated seawater pipeline flowmeter that concentrated seawater pump (17) front end is set gradually
(38), the concentrated water pipe of concentrated seawater flow control valve (37), concentrated seawater discharge tube (10) and concentrated seawater discharge tube (10) end
Road check-valves (36)；
Control module includes control cabinet (16) and the cable (19) for being connected to power supply box on upper brace；
Outline border module includes outline border (11) and the hoist cable (9).
6. deep-sea reverse osmosis desalination device as described in claim 1, it is characterised in that: also set on semi-submersible offshore platform
There are power supply box (7).
7. deep-sea reverse osmosis desalination device as claimed in claim 6, it is characterised in that: cable (19), fresh water water-supply-pipe
(20) it is extend into the form of umbilical cables on semi-submersible offshore platform with (21) three pipeline of air hose.
8. deep-sea reverse osmosis desalination device as claimed in claim 7, it is characterised in that: semisubmersible platform is by three parts group
At: Texas deck (1), column (2) and buoyancy tank (3), Texas deck (1) are connect with buoyancy tank (3) by column (2), and semi-submersible type is flat
Platform is fixed by being connected to anchor chain (4) anchoring system in seabed.
9. deep-sea reverse osmosis desalination device as claimed in claim 5, it is characterised in that: each module carried out resistance to height respectively
Pressure processing, repairs the component replaced in each module or module in device light maintenance using underwater robot, and when overhaul passes through liter
Described device ontology is raised on platform by drop equipment.
10. a kind of method for desalting seawater of deep-sea reverse osmosis desalination device described in claim 1, it is characterised in that:
When the electromagnetic flow valve (38) and intake pump (18) opening on inlet pipeline (24), high pressure sea water is by seawater water inlet manifold
Road enters filter box (12) and is simply pre-processed, and filters out possible impurity, then again will be extra large by intake pump (18) and pipeline
Water is delivered to reverse osmosis membrane unit (14)；Hydraulic pressure when two electronic pressure gages (25,26) monitor seawater into and out of intake pump respectively
Power, and the water inlet for the production water pressure monitoring device for cooperateing with the electronic pressure gage of water producing pipe road to measure and the pressure difference for producing water；Water inlet
The size of start-stop and flow is controlled by water inlet electronic flow valve (38)；Pass through the heating equipment (28) on seawater inlet pipeline
With the cooperation of water temperature sensor (29), the temperature for promoting water inlet seawater guarantees the working efficiency of desalination film；
The high pressure sea water of desalination by reverse osmosis film unit (14) is delivered to by output fresh water after the desalination of desalination film and concentrated seawater is discharged.Its
Middle fresh water is conveyed through such process: the fresh water production water flow of every reverse-osmosis membrane element can be by the stream installed on pipeline
Meter (30) is measured, and the fresh water production water of each branch membrane component imports total water producing pipe (40) and is transported in fresh-water tank (15)；Fresh water water
Case (15) is connected with high-pressure pump (22), is also equipped on connecting line electronic pressure gage (33), and fresh water is conveyed by high-pressure pump along fresh water
Pipeline 20 is delivered in the freshwater storage water tank (8) on semisubmersible platform；Fresh water transfer pipeline is equipped with check-valves on (20)
(35) prevent the fresh water under fortuitous event from flowing back；Air hose (21) are connected on fresh water tanks (15), air hose is connected upwardly to
Platform upper, system produce the interior pressure of fresh water tanks (15) in water and keep an atmospheric pressure；Pressure is by being mounted in fresh water tanks
The pressure sensor monitoring (31) of water tank upper；
Valve (39) when device is shut down in fresh water resorption water tank module on pipeline is opened and the valve in fresh water production water lines
(41) it closes, the fresh water in resorption water tank (13) can flow into reverse-osmosis membrane element since naturally osmotic acts on, at this time resorption water tank
Interior dosing fresh water can realize the cleaning to pipeline；Pressure sensor (32) is for monitoring and guaranteeing that resorption water tank will in device
It is full water state before shutting down, the valve (41) for needing first to close on fresh water line if being not full water state in resorption water tank
And the valve (39) of fresh water resorption water tank branch road is opened, fresh water production water, which is introduced resorption water tank, supplements fresh water, and resorption water tank is full
It is shut down again after water；
It is not discharged through concentrated seawater pipeline then through the concentrated seawater of reverse osmosis membrane, concentrated seawater pipeline is equipped with flowmeter (38) and electromagnetism
Flow control valve (37), flowmeter (38) measurement concentrated water total flow need to meet the minimum concentrated stream that membrane component is normally persistently run
Amount limitation, electromagnetic flow control valve (37) carry out flow adjusting and control desalination system recycled in its entirety rate no more than desalination system energy
The highest recovery of normal operation.Concentrated seawater is discharged to outer by concentrated seawater pump (17) pressurization of the setting on concentrated seawater pipeline (10)
In boundary's marine environment, concentrated seawater pump discharge pipeline (17) setting check-valves (36) prevents seawater adverse current；Concentrated seawater discharge of pipes goes out
Mouth is deep on bottom of device vertical direction at set distance, and concentrated seawater pipeline (10) tilt angle is substantially in vertical direction
60 ° of angles, concentrated water pipeline discharge outlet, far from seawater inlet pipeline (24), prevent the concentrated seawater of discharge on horizontal vertical two direction
Influence the influent quality of device.
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