CN107720862A - A kind of compact distillation sea water desalting device - Google Patents
A kind of compact distillation sea water desalting device Download PDFInfo
- Publication number
- CN107720862A CN107720862A CN201711134017.6A CN201711134017A CN107720862A CN 107720862 A CN107720862 A CN 107720862A CN 201711134017 A CN201711134017 A CN 201711134017A CN 107720862 A CN107720862 A CN 107720862A
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- water
- feed
- evaporator
- pump
- tank
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- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
-
- 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/043—Details
-
- 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
-
- 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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
It is an object of the invention to provide a kind of compact distillation sea water desalting device, including feed-tank, feed pump, evaporator, condenser, condensation tank, condensate pump；Feed-tank takes over connection feed pump by entrance of water-supplying pump, feed pump connects feedwater piping by feed pump discharge connection, feedwater piping connects evaporator by evaporator feedwater entrance sleeve, vapor inlet connecting pipe is set on evaporator, evaporator takes over connection cryophorus by indirect steam, condensation tank connects cryophorus, condensate pump connects condensation tank by fresh water conveyance conduit, condensate pump connects condensate pump discharge connection, condensate pump discharge connection connects qualified water exit conduit and unqualified water exit conduit in a manner of threeway, and magnetic valve is set at threeway.Present invention eliminates vacuum ejector and dredge pump, is simplified system architecture, and operation, attended operation are more simple and convenient, not only reduces sea water desalinating unit volume, meanwhile, the reliability of device greatly improves.
Description
Technical field
The present invention relates to a kind of sea water desalting equipment.
Background technology
Water resources in china relative shortage and skewness, per capita fresh water occupancy volume be only world occupancy volume per person four/
One, one of 13 Ge Pin lands that abounds in rivers and lakes are classified as by the United Nations.Center of gravity of the coastal area as Chinese population aggregation and economic development, Ye Shishui
The most short area of resource.In addition, ship navigates by water on ocean, and it is long-term away from land and harbour, by itself lifting capacity and sky
Between limitation, power set moisturizing and crewman's daily life water are very limited.Recently as desalination technology not
Disconnected development, fresh water is extracted from seawater has turned into the effective way of solution water resource deficiency.
At present, the desalination technology of comparative maturity includes multi-effect distilling, multistage flash evaporation, pressure steam distillation and hyperfiltration.
Multi-effect distilling and multistage flash evaporation efficiently solve the problems, such as conventional high-temperature distillation fouling of heat-transfer surface corrosion, have very high heat transfer
Efficiency and security.But multi-effect distilling and multistage flash distillation device are complicated, operating difficulties.Press steam distillation method desalinization skill
Art water generation ratio can reach more than 10 in theory, have very high economy, but system needs placement of mechanical compressor, unit scale
The limitation of compressed machine capacity.Hyperfiltration desalination technology does not need steam, and energy consumption is low, device systems modularization, installation
Easily, but the clean and maintenance of reverse osmosis membrane is costly, and the pre-processing requirements of seawater are tightened up.Also have in terms of desalination technology
Many outstanding designs, such as publication number 101985369A, in the patent of invention file of entitled plate type sea water desalinating device
Disclose a kind of sea water desalinating unit, including sea water pump, plate-type evaporator, plate-type condenser, salt solution-air ejector, fresh water
Pump and for mounting plate type evaporator and the housing of plate-type condenser.The purpose is to the product structure using optimization, efficiently change
Hot device, make apparatus structure compact, simple to operate, assembly and disassembly, maintenance are convenient, but the sea water desalinating unit control system of this structure is answered
Miscellaneous, stability is not high.
For daily production and life water and Ship Power Equipment water, sea water desalinating unit except consider economy and
Outside cycle efficieny, size limitation, antijamming capability, stability and security are the problem of focusing more on.
The content of the invention
It is an object of the invention to provide for the marine sea water desalination device device capacity usage ratio it is not high, it is complicated, operation
Cumbersome, device volume is big and a kind of compact distillation sea water desalting device of the outstanding problem such as the easy fouling of heat exchange surface.
The object of the present invention is achieved like this：
A kind of compact distillation sea water desalting device of the present invention, it is characterized in that：Including frames and installed in branch
Feed-water preheating system, vapo(u)rization system and the condenser system in frame are supportted, feed-water preheating system includes feed-tank, feed pump, evaporation
System includes evaporator, and condenser system includes condenser, condensation tank, condensate pump；Feed-tank is taken over by entrance of water-supplying pump and connected
Feed pump, feed pump connect feedwater piping by feed pump discharge connection, and feedwater piping is connected by evaporator feedwater entrance sleeve
Evaporator is connect, vapor inlet connecting pipe is set on evaporator, evaporator takes over connection cryophorus, condensation tank connection by indirect steam
Cryophorus, condensate pump connect condensation tank, condensate pump connection condensate pump discharge connection by fresh water conveyance conduit, and condensate pump discharge connects
Pipe connects qualified water exit conduit and unqualified water exit conduit in a manner of threeway, and magnetic valve is set at threeway.
The present invention can also include：
1st, blow-off line is installed between entrance of water-supplying pump adapter and feedwater piping, evaporation is installed between evaporator and feed-tank
Device water delivery is taken over, and the first regulating valve is set between feedwater piping and evaporator feedwater entrance sleeve.
2nd, feed pump discharge connection bypass has relief pipeline, and the second regulating valve is set on relief pipeline.
3rd, built-in heat exchanger tube of the interlaced arrangement into W-shape up and down in feed-tank.
Advantage of the invention is that：The present invention is shortened between condenser and evaporator by the structure design of integration
Connecting pipe, improve plant running security and compactedness；Sea water desalinating unit is evaporated and condensed under atmospheric pressure state, with
Common low temperature multiple-effect distillation sea water desalting device is compared, and eliminates vacuum ejector and dredge pump, enables system architecture letter
To change, operation, attended operation are more simple and convenient, not only reduce sea water desalinating unit volume, meanwhile, the reliability of device carries significantly
It is high；The present invention is reduced using plate-type evaporator, feed-tank built-in heat exchanger and the blowdown water circulation system of high-efficiency compact and added
The consumption of vapours, improve the economic performance of sea water desalinating unit.
Brief description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the fundamental diagram of the present invention；
Fig. 3 a are that feed-water preheating system schematic a, Fig. 3 b are feed-water preheating system schematic b；
Fig. 4 is data collecting system schematic diagram of the present invention.
Embodiment
Illustrate below in conjunction with the accompanying drawings and the present invention is described in more detail：
With reference to Fig. 1~4, the present invention provides a kind of compact sea water desalinating unit, including：Feed-water preheating system, evaporation system
System, condenser system, data collecting system and frames.Feed-water preheating system includes feed pump 16, feed-tank 20, feed pump
Inlet connection 17 and evaporator drain nozzle 18.The bottom connecting plate of feed-tank 20 is bolted on the bottom plate of frames 35
On, feed-tank outlet is connected to feed pump by entrance of water-supplying pump adapter 17, and the built-in heat exchanger entrance of feed-tank 20 passes through
Evaporator drain nozzle 18 is connected with evaporator, and under sea water desalinating unit accidental conditions, the steam drainage of evaporator 9 flows through
The seawater that drain nozzle 18 enters in the built-in heat exchanger of feed-tank 20 heating feed-tank 20, seawater are defeated by feed pump after being preheated
Deliver to evaporator 9.Vapo(u)rization system includes plate-type evaporator 9, heats steam connection 13, feedwater piping 32.The casing of evaporator 9 is placed
Fastened on the angle steel platform of the support of frame 35 or so and by the dormant bolts of both sides, its also include by box flange,
Pad is connected evaporator bonnet with casing.During system operation, the steam from power set boiler or steam turbine is steamed by heating
Vapour adapter 13 enters the steam channel of evaporator 9, and pre-warmed seawater in feed-tank 20 is passed through feedwater piping 32 by feed pump 16
It is delivered to the water supply connecting tube 14 of evaporator.Condenser system includes shell-and-tube cooler 1, condensation tank 8, indirect steam adapter 3, cooling
Water inlet adapter 6, coolant outlet adapter 5, fresh water pipeline 29 and condensate pump 21.Condenser base 7 is welded in frame 35
Support plate, indirect steam adapter 3 are connected to condenser 1 and evaporator 9 by square flange.The housing both sides of condenser 1 are inside and outside respectively
Tube sheet, end cap flange and left and right end socket.Set end socket dividing plate that end socket space is divided into two parts independent up and down in right end socket,
It is respectively communicated with cooling water inlet adapter 6 and discharge connection 5.Data collecting system includes data collecting plate card, computer, device
During operation, data collecting card receives the measurement signal that temperature, pressure and flow sensor on each pipeline are changed and sent, and passes through
Graphical programming software transfers data to computer and carries out visualization processing and analysis.
The workflow of the sea water desalinating unit nominal situation operation of the present invention is as follows：Raw material seawater warp in feed-tank 20
After improving temperature by the steam drainage preheating of evaporator 9, by entrance of water-supplying pump pipeline 17, feedwater under the driving of feed pump 16
Pipeline 32, evaporator feedwater adapter 14 give aquaporin into evaporator 9, with coming from power set in the steam channel of evaporator 9
The steam of boiler or steam turbine carries out heat exchange, and evaporation becomes secondary initial steam；Initial steam flows through connection condenser 1 and evaporation
The quadrate secondary steam connection 3 of device 9 enters condenser 1, and the horizontal heat exchange of transversal flow condenser 1 is restrained, the cooling of condenser 1
The initial steam that water is entered outside heat-exchanging tube bundle, with heat exchanger tube by cooling water inlet adapter 6 is connect after heat exchange amount by coolant outlet
Pipe 5 flows out condenser 1；Initial steam is cooled to condense into fresh water and flows into condensation tank 8, and under the driving of condensate pump, fresh water flows through light
Water conveyance conduit 29, condensate pump discharge connection 23 enter fresh water tank as power set water and personnel's domestic water.
A kind of foregoing compact sea water desalinating unit, condensate pump discharge connection 23 arrange magnetic valve 25, online electrical conductivity
Monitor 28, in seawater desalination system running, magnetic valve is in closure state, and fresh water is flowed into by qualified water discharge connection 26
Fresh water tank, online monitored conductivity instrument 28 continuously measures the electrical conductivity for producing fresh water, if system causes fresh water due to transient state accident
Salt content is exceeded, and online monitored conductivity instrument measures triggering magnetic valve 25 when fresh water electrical conductivity exceeds setting value and opened, qualified water
Motor-driven valve 27 on outlet conduit 26 is closed, and fresh water is discharged by unqualified water out adapter 24, avoids fresh water in fresh water tank dirty
Dye, improve sea water desalinating unit fresh water quality.
Sea water desalinating unit of the present invention, the waste of evaporator bottom plate are pumped into by blow-off line 31 with feedwater
Mouth adapter 17 is connected, and seawater desalination system keeps water cleaning in evaporator casing by continuous blowdown in the process of running,
The sewer for being discharged evaporator 9 imports entrance of water-supplying pump adapter 17 and fed water the disappearing of not only reduction raw material seawater as evaporator 9
Consumption, energy recycling efficiency is improved, the shakiness of heat transfer process is reduced simultaneously also by the outlet liquid holdup for improving evaporator 9
It is qualitative.
The technical scheme that further limits of the present invention is：Condenser 1 is shell-and-tube cooler, uses two-tube harden structure with true
Protect steam side and cooling water side is completely separated, cooling water flows through tube side, and shell-side fluid is indirect steam, and heat exchanger tube uses iron white copper
Drawn tube, housing centre installation deflection plate.Indirect steam flows into condenser 1 by steam connection 3 from the circular hole of steam baffle, passes through
Deflection plate bottom arc notch washes away horizontal heat-exchanging tube bundle and is condensed upwards, and condensate is collected by condensation tank 8.The front of condensation tank 8 is set
Peephole is put to monitor cistern water level in real time.
A kind of compact sea water desalinating unit of the present invention, feed pump discharge connection 34 arrange by-pass line 33, lead to
The feedwater flow for crossing reasonable adjusting by-pass line 33 and feedwater piping 32 is required with meeting that sea water desalinating unit feeds water.
Present invention additionally comprises the water level controller inside evaporator 9, when the water level of evaporator 9 is too high, water level controller hair
Go out signal control waste pipe motor-driven valve to open, sewer is discharged out of my cabin by feed pump 16 via waste pipe 31.
A kind of compact sea water desalinating unit of the present invention, secondary initial steam caused by evaporator 9 carry a certain amount of
Seawater droplet, if fresh water salt content can be increased and make sea water desalinating unit fresh water quality variation by being directly entered condenser 1 and condensing, because
This, the present invention sets efficient silk screen separator to remove the saliferous droplet in initial steam in the bonnet of evaporator 9, improves steam quality
With fresh water quality.
A kind of compact distillation sea water desalting device of the present invention, including：Feed-water preheating system, vapo(u)rization system, condensed system
System, data collecting system and frames.As shown in figure 1, device includes shell-and-tube cooler 1, thermometer 2,10, secondary steaming
Vapour adapter 3, pressure gauge 4,12, coolant outlet adapter 5, cooling water inlet adapter 6, condenser base 7, condensation tank 8, evaporator
9th, regulating valve 11,15,19,27, vapor inlet connecting pipe 13, evaporator feedwater entrance sleeve 14, feed pump 16, entrance of water-supplying pump connect
Pipe 17, evaporator drain nozzle 18, feed-tank 20, condensate pump 21, condensate pump inlet connection 22, condensate pump discharge connection 23, no
Qualified water exit conduit 24, magnetic valve 25, qualified water exit conduit 26, online monitored conductivity instrument 28, fresh water conveyance conduit 29,
Safety valve 30, blow-off line 31, feedwater piping 32, relief pipeline 33, feed pump discharge connection 34, frames 35.
Blow-off line one end connects evaporator casing, and one end is connected to feed pump entrance sleeve.During blowdown, feed pump is closed
Stop valve on entrance sleeve and supply line, the strong brine of demister trapping is bypassed under the driving of feed pump by casing to be arranged
Walk.
The heat exchange element of evaporator uses titanium herringbone corrugated plating, and turbulent flow can be occurred under extremely low flow velocity by feeding water
Flowing, due to the disturbance effect of fluid, dirt caused by evaporation without being adhered to heat exchange plate surface, in addition, turbulent perturbation increases
The coefficient of heat transfer, not only improves the thermal efficiency, also reduces plant bulk, system is compacter.
As shown in Fig. 2 workflow：Seawater by pretreatment, via feed-tank, is feeding water under the driving of feed pump
Evaporator is flowed into by supply line after the heat temperature raising of pre-heating system.At the same time, the high temperature from Steam Power Equipment steams
Vapour flows into evaporator by jet chimney, and the surface of heat exchange plate is flowed through with seawater alternate.It is secondary that seawater is heated evaporation generation
Steam flows to baffle bottom in the decline passway that steam baffle and heat exchange plate are formed, then flows through demister from the bottom to top, drops
The steam of high-quality is obtained after low humidity.Steam enters condenser via indirect steam adapter, is downward through from condenser overhead
Heat exchanger tube, low-temperature cooling water are flowed to condense indirect steam under the driving of circulating pump in heat exchanger tube.Condensation tank is collected secondary
The condensate of steam, fresh water is delivered to by fresh-water tank by fresh water line.
As shown in figure 3, in feed-water preheating system, U-shaped steam drainage takes over upper and lower interlaced arrangement into W-shape.Evaporator steams
Vapour is hydrophobic will to discharge outboard in feed-tank via drain water piping inflow feed-tank heat exchanging pipe after raw water preheating.
As shown in figure 4, the data-signal measured by flowmeter in the present invention, thermometer, salinometer and differential pressure transmitter,
Gathered by data collecting plate card, transferring data to computer using LabVIEW graphical programming softwares carries out visualization processing
And analysis.
Feed-water preheating system includes feed pump, feed-tank, feed-tank inner-heating tube；Vapo(u)rization system includes plate evaporation
Device, demister, steam pipeline (trace), feedwater piping；Condenser system includes shell-and-tube cooler, cooling tower, condensation tank, secondary steaming
Vapour is taken over, fresh water pipeline and condensate pump；Data collecting system includes data collecting plate card, computer, it is characterised in that：Storage
Raw water in feed-tank 20 is pressurized by the pumping over of feedwater piping 32 to evaporator 9 through feed pump 16, by from power boiler
Steam heating evaporation, initial steam baffling remove the saliferous droplet carried upwardly through high-efficiency foam remover, and the steam after dehumidifying flows through
Condenser 1 is condensed to condensation tank 8, fresh water by low temperature seawater and pumped by condensate pump 21 to fresh-water tank.
Feed-water preheating system is arranged on below evaporator casing, is bolted on the base of frame 35, and pass through evaporation
Device drain nozzle 18 is connected with evaporator 9.
Feed-tank 20 is included to water entrance adapter, the adapter of steam drainage inlet and outlet and inner-heating tube, the heat exchange
Pipe connects with hydrophobic inlet and outlet adapter.
In feed-tank 20 inner-heating tube up and down interlaced arrangement into W-shape.
The heat exchange element of evaporator 9 uses herringbone corrugated plating group, is titanium plate at regular intervals by gasket seal
And composition is fixed by clamping screw and guide rod.
Evaporator 9 is fixed on the left and right support of frame 35, and it also includes the evaporator bonnet connected by end cap flange.
Arrangement demister, moist steam caused by evaporator 9 pass through demister from the bottom to top in evaporator bonnet.
Evaporator bottom half is provided with blow-off line 31 and valve, and blow-off pipe 31 communicates with entrance of water-supplying pump adapter 17, leads to
Cross feed pump 16 to discharge, realize urgent excretion and interrupted blow down.
Condenser 1 is fixed on the upper panel surface of frame 35 by support base, and passes through indirect steam adapter 3 and bottom evaporator
9 connections.
Condenser 1 is shell-and-tube cooler, and heat exchanger tube uses iron white copper drawn tube, and left and right tube plate expanded-connecting, internal tube plate with
Case weld is integrated, and is connected by flange, pad and link bolt with end cap.
The top of condenser 1 is provided with bronze right angle safety valve 2 and unidirectional gas check valve, and bottom is collected light provided with condensation tank 8
Water.
Condensate pump outlet conduit 23 installs salinometer and magnetic valve, monitors in real time and controls fresh water salt content.
Condenser is fixed on above evaporator casing by sea water desalinating unit using the structure design of integration, condenser
Steam inlet connects with evaporator outlet, eliminates long pipeline connection, on the one hand reduces the flow resistance of initial steam, on the other hand
So that pipeline has both improved sea water desalinating unit fortune because rupture occurs for operation transient accident, the possibility of damage substantially reduces
Row stability reduces plant bulk again；Secondly, compared with the low temperature distillation that existing sea water desalinating unit uses, air-distillation sea
Water desalination technology need not be established and maintain vacuum, and sea water desalinating unit has cast out vacuum ejector and dredge pump, condenser and
Evaporator is run under pressure-fired operating mode, has both simplified apparatus structure and Operation and Maintenance process, and it is stable to improve plant running again
Property.
Claims (5)
1. a kind of compact distillation sea water desalting device, it is characterized in that：Including frames and in frames
Feed-water preheating system, vapo(u)rization system and condenser system, feed-water preheating system includes feed-tank, feed pump, and vapo(u)rization system includes
Evaporator, condenser system include condenser, condensation tank, condensate pump；Feed-tank takes over connection feed pump by entrance of water-supplying pump, gives
Water pump connects feedwater piping by feed pump discharge connection, and feedwater piping connects evaporator by evaporator feedwater entrance sleeve,
Vapor inlet connecting pipe is set on evaporator, and evaporator is taken over connection cryophorus by indirect steam, condensation tank connection cryophorus, coagulated
Water pump connects condensation tank by fresh water conveyance conduit, and condensate pump connection condensate pump discharge connection, condensate pump discharge connection is with threeway
Mode connect qualified water exit conduit and unqualified water exit conduit, at threeway set magnetic valve.
2. a kind of compact distillation sea water desalting device according to claim 1, it is characterized in that：Entrance of water-supplying pump is taken over
Blow-off line is installed between feedwater piping, evaporator water delivery adapter, feedwater piping and steaming are installed between evaporator and feed-tank
The first regulating valve is set between hair device feed-water inlet nozzle.
3. a kind of compact distillation sea water desalting device according to claim 1 or 2, it is characterized in that：Feed water pump discharge
Adapter bypass has relief pipeline, and the second regulating valve is set on relief pipeline.
4. a kind of compact distillation sea water desalting device according to claim 1 or 2, it is characterized in that：In in feed-tank
Upper and lower interlaced arrangement is put into the heat exchanger tube of W-shape.
5. a kind of compact distillation sea water desalting device according to claim 3, it is characterized in that：On built in feed-tank
Heat exchanger tube of the lower interlaced arrangement into W-shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711134017.6A CN107720862A (en) | 2017-11-16 | 2017-11-16 | A kind of compact distillation sea water desalting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711134017.6A CN107720862A (en) | 2017-11-16 | 2017-11-16 | A kind of compact distillation sea water desalting device |
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| Publication Number | Publication Date |
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| CN107720862A true CN107720862A (en) | 2018-02-23 |
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| CN201711134017.6A Pending CN107720862A (en) | 2017-11-16 | 2017-11-16 | A kind of compact distillation sea water desalting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111233062A (en) * | 2020-03-14 | 2020-06-05 | 北京结力能源科技有限公司 | Solar photo-thermal seawater desalination integrated system and method |
| CN113371771A (en) * | 2020-02-25 | 2021-09-10 | 笹仓机械工程有限公司 | Control device, control method, and recording medium for recording control program for controlling vacuum evaporation type water producing device |
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| CN113371771A (en) * | 2020-02-25 | 2021-09-10 | 笹仓机械工程有限公司 | Control device, control method, and recording medium for recording control program for controlling vacuum evaporation type water producing device |
| CN111233062A (en) * | 2020-03-14 | 2020-06-05 | 北京结力能源科技有限公司 | Solar photo-thermal seawater desalination integrated system and method |
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