CN105366752A

CN105366752A - High-efficiency seawater desalination system

Info

Publication number: CN105366752A
Application number: CN201510925109.0A
Authority: CN
Inventors: 褚兴全; 褚校崧
Original assignee: SHANGHAI XINGQUAN POWER CO Ltd
Current assignee: Nantong Management Co., Ltd
Priority date: 2015-12-11
Filing date: 2015-12-11
Publication date: 2016-03-02
Anticipated expiration: 2035-12-11
Also published as: CN105366752B

Abstract

The invention discloses a high-efficiency seawater desalination system. The high-efficiency seawater desalination system comprises a condenser, a water pump, a solar energy heat collecting system, a spray system, a compressor system, an evaporator, an energy converter, a steam-water separator, an evaporation chamber, a bottom heater, and a plurality of valves; the valves comprise a seawater spraying regulating valve, an evaporator seawater heating inlet regulating valve, an evaporator bottom seawater heating inlet regulating valve, an evaporator seawater heating outlet control valve, an evaporator bottom seawater heating outlet control valve, a compressor inlet control valve, a first steam control valve, an evaporator steam channel outlet control valve, an evaporator bottom steam heating inlet regulating valve, a second steam control valve, an evaporator bottom steam heating outlet control valve, an evaporator inlet control valve, an evaporator outlet control valve, and a crystalline salt discharging control valve. The high-efficiency seawater desalination system is capable of increasing resource utilization ratio.

Description

Efficient sea water desalting system

Technical field

The invention belongs to seawater treatment technologies field, relate to a kind of brine disposal system, particularly relate to a kind of efficient sea water desalting system.

Background technology

Under the background that Freshwater resources are in short supply, as the increment technique of increasing income of Freshwater resources, and through the abundant confirmation of practice at home and abroad experience, sea water desaltination becomes the important channel solving global water resources scarcity.Therefore develop desalination technology, ask for the task of top priority that fresh water has become modern society to ocean, and become the new highlight of mankind's water resources development and utilization.Greatly develop desalination technology industry, the serial significant problems such as increasingly outstanding and environmental pollution is day by day serious to the contemporary shortage of water resources of alleviation, imbalance between supply and demand have far-reaching strategic importance.Sea water desaltination has become a kind of strategic choice that world many countries solution water shortage problem generally adopts, and its validity and reliability has obtained all over the world and admitted widely and apply.

Sea water desaltination is the dream that the mankind pursue; after eighties of last century the fifties; sea water desaltination develops rapidly along with the aggravation of water resources crisis, and in the multiple desalination techniques now developed, the scale of distillation method, electroosmose process, reverse osmosis method all reaches commercial production level.

Aforesaid method is faced with sea water preprocessing, fouling, frequent replacing filter membrane and the problem of strong brine discharge to eco-environmental impact.

Containing a large amount of microorganisms such as silt, algae in not treated seawater, and be dissolved with a certain amount of gas.Traditional method is after seawater is introduced coagulation basin, adds a certain amount of coagulant aids, coagulating agent and chlorine to carry out preliminary precipitation and sterilization and disinfection.But adding that dosage is too small can not thorough coagulation, makes microorganism growth and breeding in former pond, not only can reduce coagulation effect and also can cause corrosion to equipment; Or add that dosage is excessive pollutes water quality (chlorinity exceeds standard), part algae secretes the materials such as Algae toxins being killed in process, makes former water variable color or produces peculiar smell and then bring in product water, reducing the quality of product water simultaneously.

Due to high salinity, the high rigidity of seawater, desalinate on heat-transfer surface and easily fouling occurs in hot method desalination process, this has become one of major issue that sea water desaltination faces.Fouling not only can increase heat transmission resistance, reduce heat exchange wall heat transfer efficiency, can reduce the work-ing life of equipment simultaneously, increase maintenance cost, also have a strong impact on equipment fresh water yield.Fouling is a complex process, there is no method Accurate Prediction based on current theory.Method conventional at present reserves the heat interchanging area of 35% to alleviate the impact of fouling on equipment performance in the design phase, but this adds the volume of interchanger undoubtedly, improves production, manufactures and transportation cost.In hot method desalination technology, service temperature higher than 120 DEG C, otherwise must not can produce serious scale problems, blocking pipeline, and device cannot be run.Service temperature is low will have a strong impact on the quantity and efficiency that produce fresh water, and therefore, scale problems governs hot method sea water desalinating plant to the development of maximizing.

The corrosion with low in energy consumption, equipment and the low advantage of scaling degree although Reverse-osmosis Seawater Desalination Technology is in operation, but it is strict to pre-processing requirements, complex treatment process, influent quality is explicitly called for, the reverse osmosis membrane life-span is shorter, easy pollution, needs periodic replacement, also will do further process to product water quality in addition.

Seawater is after desalination techniques extracts fresh water, and the concentrated seawater salinity obtained is 1.5 ~ 2 times of normal seawater.The discharge of these high strong brines can cause discharge areas sea water salinity to increase, and discharge outlet salinity is poly-to be increased, and grow marine organism growth, physiological function has many-sided impact, finally brings loss to marine economy.The change of salinity can affect to aspects such as animal survival, growth and breeding, physiological metabolism process, metabolic control mechanisms, species distribution.When environment salinity suddenly raises, destroy the osmotic balance of body fluid and environment, some are in the animal in young stage and do not have the marine organisms somatocyte of osmoregulation mechanism to produce plasmolysis, cause Metabolic disorder even dead, finally cause the minimizing of biological species and quantity; The salt solution of high density can cause water turbidity to rise, and incident beam reduces, and the photosynthesis of the waterplant such as marine alga, sea grass is suppressed, and causes sea area productivity to decline.

Affect the large factor of bottleneck two of the light industrialized development of seawater, one is that cost is high, and two is concentrated seawater discharge environmental pollution problems.

Thoroughly to solve the Cost Problems of sea water desaltination, just should research and develop novel desalination technology and equipment further, reduce fresh water prepare energy consumption, find novel energy-saving material and approach, utilize nature green energy resource to carry out the preparation of fresh water, to adapt to the development in epoch.In addition from the operation of reality, a series of reasons such as cost, technology, policy are all the bottlenecks of Seawater Desalination Industry.

Existing desalination technology faces the problem how improving efficiency of energy utilization and unit producing water ratio, is also faced with difficulty and challenge greatly in industrialization and mass-producing.The present invention, by effective combination of novel sea water desalinization technology and traditional desalination technology, integrates various new heat transfer enhancement technology, develops a kind of novel seawater desalination system, for the mankind provide higher-quality service on traditional desalination basis.

In view of the impact of above condition, research and development novel energy-conserving, economic desalination technology will be favored, and are with a wide range of applications.

Summary of the invention

Technical problem to be solved by this invention is: provide a kind of efficient sea water desalting system, can improve the utilization ratio of resource.

For solving the problems of the technologies described above, the present invention adopts following technical scheme:

A kind of efficient sea water desalting system, described seawater desalination system comprises: condenser, water pump, solar thermal collection system, fog system, compressor assembly, vaporizer, transverter, steam separator, evaporator room, bottom heater, some valves;

Some valves comprise: seawater spraying variable valve, vaporizer heating of seawater inlet adjustment valve, base of evaporator heating of seawater inlet adjustment valve, vaporizer heating of seawater discharge control valve, base of evaporator heating of seawater discharge control valve, suction port of compressor control valve, first steam control valve, vaporizer vapour passage discharge control valve, base of evaporator steam heating inlet adjustment valve, second steam control valve, base of evaporator steam heating discharge control valve, evaporator inlet control valve, evaporator outlet control valve, crystal salt discharges control valve,

Described vaporizer is provided with vaporizer sea water passage, vaporizer vapour passage, vaporizer distilling path; Condenser is provided with seawater inlet, relief outlet, and condenser connects solar thermal collection system by water pump, and solar thermal collection system connects vaporizer sea water passage by vaporizer heating of seawater inlet adjustment valve;

The first end of described vaporizer sea water passage connects the first end of vaporizer vapour passage by evaporator inlet control valve; Second end of vaporizer sea water passage connects the second end of vaporizer vapour passage by evaporator outlet control valve;

The bottom of described vaporizer is provided with bottom heater, and bottom heater connects crystal salt and discharges control valve; Bottom heater is also provided with transverter; Vaporizer is arranged in evaporator room, and one end of evaporator room is provided with fog system, steam separator;

The first end of described bottom heater connects fog system by vaporizer heating of seawater discharge control valve, base of evaporator heating of seawater inlet adjustment valve, seawater spraying variable valve; Second end of bottom heater connects fog system, compressor assembly by base of evaporator steam heating inlet adjustment valve, the first steam control valve, is also provided with suction port of compressor control valve between the first steam control valve, compressor assembly; Compressor assembly connects vaporizer vapour passage;

Second end of vaporizer sea water passage is by the pipeline between vaporizer heating of seawater discharge control valve access condenser and water pump; Second end of vaporizer vapour passage is by the pipeline between vaporizer vapour passage discharge control valve access base of evaporator steam heating inlet adjustment valve, the first steam control valve;

Bottom heater is by the pipeline between base of evaporator heating of seawater discharge control valve access condenser and water pump; Bottom heater accesses the pipeline between the second steam control valve and condenser by base of evaporator steam heating discharge control valve;

Evaporation of seawater flow process comprises Three models:

The first process mode: solar thermal collection system and compressor assembly successively start, run simultaneously; By day when sunlight abundance, open solar thermal collection system and compressor assembly, water production rate is large simultaneously;

Each valve status: the valve being in closing condition has the first steam control valve, base of evaporator steam heating inlet adjustment valve, base of evaporator steam heating discharge control valve, evaporator inlet control valve, evaporator outlet control valve, and all the other valves are in open mode;

The heat that the bottom-heated of evaporator room is produced by solar thermal collection system completes, and the heat that compressor assembly is produced without the bottom heater of evaporator room, and is used to direct heating seawater;

First start solar thermal collection system, seawater carries out thermal exchange within the condenser through seawater inlet, by the heating of seawater entered, the preliminarily heated seawater of the device that is condensed enters solar thermal collection system absorption luminous energy through water pump pressurization and heats, then three tunnels are divided into, the first via enters evaporator room through seawater spraying variable valve, then is sprayed by the seawater heated through fog system, is heated and evaporate after droplet drops to vaporizer distilling path by vaporizer sea water passage; Second tunnel enters vaporizer sea water passage through evaporator heating of seawater inlet adjustment valve, to vaporizer heating, is then discharged to pump entrance through evaporator heating of seawater discharge control valve and circulates, make full use of the heat of heating seawater; 3rd tunnel enters bottom heater through base of evaporator heating of seawater inlet adjustment valve, by the further heating evaporation of crystal salt settled out;

The quantity of steam of indoor to be evaporated to a certain extent after, restart compressor assembly, steam in evaporator room enters compressor assembly through the separation of steam separator and recompresses, after vapor temperature is improved further, enter vaporizer vapour passage to heat to vaporizer, then enter condenser through evaporator vapour passage discharge control valve and the second steam control valve and seawater carries out condensing heat-exchange, the vapor condensation of desalination is become fresh water, discharges from relief outlet through finished product fresh water;

After solar thermal collection system and compressor assembly all normally start, observe crystal salt and discharge the state that control valve discharges crystal salt, by regulating seawater spraying variable valve, vaporizer heating of seawater inlet adjustment valve, base of evaporator heating of seawater inlet adjustment valve, different dry can be obtained and to wet the crystal salt of degree;

Scale removal problem: drop to crystal salt easily glutinous wall and the fouling bottom evaporator room, the water production rate of system or the normal operation of system can be had a strong impact on, in order to avoid the generation of this problem, the inwall of bottom heater has installed transverter, it can make the inwall of bottom heater produce the elastic oscillation of high frequency short arc, make wall produce shearing force thus there is the function of the anti-stick wall of efficient antiscale, ensure that and in system cloud gray model, keep clean state bottom evaporator room;

The second process mode: by day when luminous energy abundance, only open solar thermal collection system, close compressor system;

Each valve status: the valve being in closing condition has suction port of compressor control valve, vaporizer vapour passage discharge control valve, base of evaporator steam heating inlet adjustment valve, base of evaporator steam heating discharge control valve, excised from system by compressor assembly, all the other valves are in open mode;

Now evaporator inlet control valve, evaporator outlet control valve are opened, the heating seawater that vaporizer heating of seawater inlet adjustment valve comes is entered vaporizer sea water passage and vaporizer vapour passage heating fumigators simultaneously, and fog system is the same with the first process mode with bottom heater; Steam unlike evaporator room is directly entered after condenser carries out condensation heat transfer by the first steam control valve and the second steam control valve after steam separator discharges finished product fresh water from relief outlet;

The third process mode: at luminous energy when not enough or night, solar thermal collection system can not play a role, and only has compressor assembly work;

Each valve status: the valve being in closing condition has vaporizer heating of seawater inlet adjustment valve, base of evaporator heating of seawater inlet adjustment valve, base of evaporator heating of seawater discharge control valve, the second steam control valve, and all the other valves are in open mode;

After vaporizer heating of seawater inlet adjustment valve and base of evaporator heating of seawater inlet adjustment valve are closed, the seawater through condenser preheating directly enters fog system by solar thermal collection system, now evaporator inlet control valve, evaporator outlet control valve is opened, the high-temperature steam that compressor assembly produces enters vaporizer sea water passage simultaneously, vaporizer vapour passage, first after the seawater discharge in vaporizer sea water passage is clean, close vaporizer heating of seawater discharge control valve again, high-temperature steam in vaporizer is discharged through vaporizer sea water passage and vaporizer vapour passage and is entered bottom heater through vaporizer vapour passage discharge control valve and base of evaporator steam heating inlet adjustment valve, through base of evaporator steam heating discharge control valve steam entered after condenser carries out condensation heat transfer again and finished product fresh water is discharged from relief outlet,

By regulating seawater spraying variable valve, obtaining different dry and to wet the crystal salt of degree;

Described vaporizer is a spiral-plate heat exchanger with three passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by three layers rolls and forms; There is the pillar stiffener that several 5mm are high between three-ply metal, or extrude the high salient point of 5mm on a metal plate, keep the distance between three-ply metal to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness of vaporizer sea water passage and vaporizer distilling path lower edges place be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy; Be welded with transfer of ultrasonic energy block in the fixed position at vaporizer vapour passage lower edges place, all the other positions keep unimpeded up and down, so that seawater droplet passes through and evaporation; Be welded with the position installation transverter of transfer of ultrasonic energy block in addition at correspondence position, there is the function of antiscaling, descaling and enhanced heat exchange;

When the first process mode, solar thermal collection system and compressor assembly successively start, run simultaneously, and seawater enters vaporizer sea water passage, and compressed vapour enters vaporizer vapour passage, heats together to the vaporizer distilling path both sides of vaporizer; In the droplet descent of the seawater be preheated, absorb the heat part evaporation in evaporator room, be again heated rapidly when dropping to vaporizer distilling path and evaporate;

During the second process mode, only open solar thermal collection system, close compressor system, open evaporator inlet control valve, evaporator outlet control valve, make the seawater through solar thermal collection system heating enter vaporizer sea water passage, vaporizer vapour passage, be also heat the both sides of vaporizer distilling path simultaneously simultaneously.

During the third process mode, only has compressor assembly work, close solar thermal collection system, open evaporator inlet control valve, evaporator outlet control valve, make the steam through compressor assembly heating enter vaporizer sea water passage, vaporizer vapour passage, be also heat the both sides of vaporizer distilling path simultaneously simultaneously;

Described condenser is a spiral-plate heat exchanger with two passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by two layers rolls and forms; There is the pillar stiffener that several 5mm are high between two layers of metal sheet, or extrude the high salient point of 5mm on a metal plate, keep the distance between two layers of metal sheet to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness in lower edges place of two passages be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy; Ultrasonic transducer is welded with in addition in appropriate location, outside;

Described condenser comprises seawater inlet passage, steam outlet passage, seawer outlet passage, steam-in passage;

Described condenser working principle is: seawater enters condenser from seawater inlet passage, discharges from seawer outlet passage; Steam enters condenser from steam-in passage, discharges water of condensation from steam outlet passage; Discharge water of condensation for convenience, outlet is arranged on the lower end of condenser;

Described fog system comprises seawater admission passage, rotating mechanism, energy converter, spraying disc, edge spray holes, bottom spray hole;

Spraying disc is made up of elastomeric titanium alloy material, is processed with uniform edge spray holes, is processed with bottom spray hole, on it, is provided with energy converter in its bottom surface, be also provided with seawater admission passage and rotating mechanism in the above at its edge;

When the seawater of preheating enters into spraying disc central position through seawater admission passage, spraying disc produces high-frequency resonant under the effect of energy converter, low speed rotation is produced under the driving of rotating mechanism, sprayed along edge spray holes and bottom spray hole by the droplet that ultrasonic energy is atomized, be evenly distributed in evaporator room, wait to be evaporated.

A kind of efficient sea water desalting system, described seawater desalination system comprises: condenser, water pump, solar thermal collection system, fog system, compressor assembly, vaporizer, transverter, steam separator, evaporator room, bottom heater, some valves; ,

Described condenser connects solar thermal collection system by water pump; Solar thermal collection system connects vaporizer; Vaporizer is arranged in evaporator room,

The bottom of described vaporizer is provided with bottom heater, and bottom heater connects crystal salt and discharges control valve; Bottom heater is also provided with transverter; Vaporizer is arranged in evaporator room, and one end of evaporator room is provided with fog system, steam separator; Described bottom heater connects fog system, compressor assembly.

As a preferred embodiment of the present invention, some valves comprise: seawater spraying variable valve, vaporizer heating of seawater inlet adjustment valve, base of evaporator heating of seawater inlet adjustment valve, vaporizer heating of seawater discharge control valve, base of evaporator heating of seawater discharge control valve, suction port of compressor control valve, first steam control valve, vaporizer vapour passage discharge control valve, base of evaporator steam heating inlet adjustment valve, second steam control valve, base of evaporator steam heating discharge control valve, evaporator inlet control valve, evaporator outlet control valve, crystal salt discharges control valve,

Bottom heater is by the pipeline between base of evaporator heating of seawater discharge control valve access condenser and water pump; Bottom heater accesses the pipeline between the second steam control valve and condenser by base of evaporator steam heating discharge control valve.

As a preferred embodiment of the present invention, evaporation of seawater flow process comprises Three models:

In order to saves energy, the heat that the bottom-heated of evaporator room is produced by solar thermal collection system completes, and the heat that compressor assembly is produced without the bottom heater of evaporator room, and is used to direct heating seawater;

Drop to crystal salt easily glutinous wall and the fouling bottom evaporator room, the water production rate of system or the normal operation of system can be had a strong impact on, in order to avoid the generation of this problem, the inwall of bottom heater has installed transverter, it can make the inwall of bottom heater produce the elastic oscillation of high frequency short arc, make wall produce shearing force thus there is the function of the anti-stick wall of efficient antiscale, ensure that and in system cloud gray model, keep clean state bottom evaporator room;

By regulating seawater spraying variable valve, obtaining different dry and to wet the crystal salt of degree.

As a preferred embodiment of the present invention, described vaporizer is a spiral-plate heat exchanger with three passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by three layers rolls and forms; There is the pillar stiffener that several 5mm are high between three-ply metal, or extrude the high salient point of 5mm on a metal plate, keep the distance between three-ply metal to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness of vaporizer sea water passage and vaporizer distilling path lower edges place be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy; Be welded with transfer of ultrasonic energy block in the fixed position at vaporizer vapour passage lower edges place, all the other positions keep unimpeded up and down, so that seawater droplet passes through and evaporation; Be welded with the position installation transverter of transfer of ultrasonic energy block in addition at correspondence position, there is the function of antiscaling, descaling and enhanced heat exchange;

During the third process mode, only has compressor assembly work, close solar thermal collection system, open evaporator inlet control valve, evaporator outlet control valve, make the steam through compressor assembly heating enter vaporizer sea water passage, vaporizer vapour passage, be also heat the both sides of vaporizer distilling path simultaneously simultaneously.

As a preferred embodiment of the present invention, described condenser is a spiral-plate heat exchanger with two passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by two layers rolls and forms; There is the pillar stiffener that several 5mm are high between two layers of metal sheet, or extrude the high salient point of 5mm on a metal plate, keep the distance between two layers of metal sheet to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness in lower edges place of two passages be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy; Ultrasonic transducer is welded with in addition in appropriate location, outside;

Described condenser working principle is: seawater enters condenser from seawater inlet passage, discharges from seawer outlet passage; Steam enters condenser from steam-in passage, discharges water of condensation from steam outlet passage; Discharge water of condensation for convenience, outlet is arranged on the lower end of condenser.

As a preferred embodiment of the present invention, described fog system comprises seawater admission passage, rotating mechanism, energy converter, spraying disc, edge spray holes, bottom spray hole;

Beneficial effect of the present invention is: the efficient sea water desalting system that the present invention proposes, and can improve the utilization ratio of resource.

Solar heating technology and MVR mechanically compress technology are applied in a seawater desalination system by the present invention simultaneously, and the product of these two kinds of technology all comparative maturity, can bring application completely at present.

The present invention is according to the change of applied environment, and reasonably the running status of adjustment seawater desalination system, can have three kinds of process modes, thus utilize this green energy resource of luminous energy to greatest extent, can also ensure the continuous operation at night simultaneously.The first process mode---solar thermal collection system 4 and compressor assembly successively start, operation simultaneously (illustrate: by day when sunlight abundance, open solar thermal collection system 4 and compressor assembly, water production rate is large simultaneously).The second process mode---by day when luminous energy abundance, only open solar thermal collection system 4, close compressor system 8.The third process mode---at luminous energy 5 when not enough or night, solar thermal collection system 4 can not play a role, and only has compressor assembly 8 to work.

It is the slow-revving fog system of core that the present invention have employed with ultrasonic magnetostrictive in seawater atomization system, seawater can be atomized into micron-sized mist, improves heat exchange efficiency.

Present invention employs the vaporizer of non-scaling, thoroughly stopped the various problems because fouling brings, and just kinetic energy can be provided to droplet, there is the function of good rapid evaporation and enhanced heat exchange.

Present invention employs the condenser of non-scaling, thoroughly stopped the various problems because fouling brings, and can filmwise condensation have been changed into dropwise condensation, improve heat exchange efficiency.

The present invention is applied by above-mentioned technological synthesis, not only has that unit capacity fresh water yield is large and efficiency is high, the feature of good energy-conserving effect, solves the problem that sea water desaltination cost is high.A feature of giving prominence to very much is also had to be exactly that seawater is after vaporizer of the present invention distills out fresh water, what discharge is not strong brine, but dryer and comfortableer crystal salt, namely the seawater through process of the present invention does not have strong brine or residual substance to enter among sea again, solves concentrated seawater discharge environmental pollution problem; Crystal salt as industrial raw material extraction rare elements wherein, namely also can produce income to carry out sale.

Accompanying drawing explanation

Fig. 1 is the composition schematic diagram of efficient sea water desalting system of the present invention.

Fig. 2 is the structural representation of efficient sea water desalting system evaporator of the present invention.

Fig. 3 is the structural representation of efficient sea water desalting system condenser of the present invention.

Fig. 4 is the structural representation of efficient sea water desalting system fog system of the present invention.

Embodiment

The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.

Embodiment one

Refer to Fig. 1, present invention is disclosed a kind of efficient sea water desalting system, described seawater desalination system comprises: condenser 2, water pump 3, solar thermal collection system 4, fog system 7, compressor assembly 8, vaporizer 9, transverter 10, steam separator 13, evaporator room 14, bottom heater 15, some valves.

Some valves comprise: seawater spraying variable valve 6.1, vaporizer heating of seawater inlet adjustment valve 6.2, base of evaporator heating of seawater inlet adjustment valve 6.3, vaporizer heating of seawater discharge control valve 6.4, base of evaporator heating of seawater discharge control valve 6.5, suction port of compressor control valve 8.1, first steam control valve 8.2, vaporizer vapour passage discharge control valve 8.3, base of evaporator steam heating inlet adjustment valve 8.4, second steam control valve 8.5, base of evaporator steam heating discharge control valve 8.6, evaporator inlet control valve 9.4, evaporator outlet control valve 9.5, crystal salt discharges control valve 11.

Described vaporizer 9 is provided with vaporizer sea water passage 9.1, vaporizer vapour passage 9.2, vaporizer distilling path 9.3; Condenser 2 is provided with seawater inlet 1, relief outlet 12, and condenser 2 connects solar thermal collection system 4 by water pump 3, and solar thermal collection system 4 connects vaporizer sea water passage 9.1 by vaporizer heating of seawater inlet adjustment valve 6.2.

The first end of described vaporizer sea water passage 9.1 connects the first end of vaporizer vapour passage 9.2 by evaporator inlet control valve 9.4; Second end of vaporizer sea water passage 9.1 connects the second end of vaporizer vapour passage 9.2 by evaporator outlet control valve 9.5.

The bottom of described vaporizer 9 is provided with bottom heater 15, and bottom heater 15 connects crystal salt and discharges control valve 11; Bottom heater 15 is also provided with transverter 10; Vaporizer 9 is arranged in evaporator room 14, and one end of evaporator room 14 is provided with fog system 7, steam separator 13.

The first end of described bottom heater 15 connects fog system 7 by vaporizer heating of seawater discharge control valve 6.4, base of evaporator heating of seawater inlet adjustment valve 6.3, seawater spraying variable valve 6.1; Second end of bottom heater 15 is connected between fog system 7, compressor assembly 8, first steam control valve 8.2, compressor assembly 8 by base of evaporator steam heating inlet adjustment valve 8.4, first steam control valve 8.2 and is also provided with suction port of compressor control valve 8.1; Compressor assembly 8 connects vaporizer vapour passage 9.2.

Second end of vaporizer sea water passage 9.1 accesses the pipeline between condenser 2 and water pump 3 by vaporizer heating of seawater discharge control valve 6.4; Second end of vaporizer vapour passage 9.2 accesses the pipeline between base of evaporator steam heating inlet adjustment valve 8.4, first steam control valve 8.2 by vaporizer vapour passage discharge control valve 8.3.

Bottom heater 15 accesses the pipeline between condenser 2 and water pump 3 by base of evaporator heating of seawater discharge control valve 6.5; Bottom heater 15 accesses the pipeline between the second steam control valve 8.5 and condenser 2 by base of evaporator steam heating discharge control valve 8.6.

Evaporation of seawater flow process comprises Three models:

The first process mode: solar thermal collection system 4 and compressor assembly successively start, run simultaneously; By day when sunlight abundance, open solar thermal collection system 4 and compressor assembly, water production rate is large simultaneously;

Each valve status: the valve being in closing condition has the first steam control valve 8.2, base of evaporator steam heating inlet adjustment valve 8.4, base of evaporator steam heating discharge control valve 8.6, evaporator inlet control valve 9.4, evaporator outlet control valve 9.5, and all the other valves are in open mode.

Object is in order to saves energy, and the heat that the bottom-heated of evaporator room 14 is produced by solar thermal collection system 4 completes, and the heat that compressor assembly 8 is produced without the bottom heater 15 of evaporator room 14, and is used to direct heating seawater.

First start solar thermal collection system 4, seawater carries out thermal exchange through seawater inlet 1 in condenser 2, by the heating of seawater entered, the preliminarily heated seawater of device 2 that is condensed enters solar thermal collection system 4 through 3 water pumps pressurizations and absorbs luminous energy 5 and heat, then three tunnels are divided into, the first via enters evaporator room 14 through seawater spraying variable valve 6.1, sprayed by the seawater heated through fog system 7, droplet is heated by vaporizer sea water passage 9.1 after dropping to 9.3 vaporizer distilling paths and evaporates again; Second tunnel enters vaporizer sea water passage 9.1 through evaporator heating of seawater inlet adjustment valve 6.2, heat to vaporizer 9, then be discharged to 3 pump entrances through evaporator heating of seawater discharge control valve 6.4 to circulate again, make full use of the heat of heating seawater; 3rd tunnel enters bottom heater 15 through base of evaporator heating of seawater inlet adjustment valve 6.3, by the further heating evaporation of crystal salt settled out.

Quantity of steam in room 14 to be evaporated to a certain extent after, restart compressor assembly 8, steam in evaporator room 14 enters compressor assembly 8 through the separation of 13 steam separators and recompresses, after vapor temperature is improved further, enter vaporizer vapour passage 9.2 to heat to vaporizer 9, then through evaporator vapour passage discharge control valve 8.3 with the second steam control valve 8.5 enters condenser 2 and seawater carries out condensing heat-exchange, the vapor condensation of desalination is become fresh water, discharges from relief outlet 12 through finished product fresh water.

After solar thermal collection system 4 and all normal startup of compressor assembly 8, observe crystal salt and discharge the state that control valve 11 discharges crystal salt, by regulating seawater spraying variable valve 6.1, vaporizer heating of seawater inlet adjustment valve 6.2, base of evaporator heating of seawater inlet adjustment valve 6.3, different dry can be obtained and to wet the crystal salt of degree.

Scale removal problem: drop to crystal salt easily glutinous wall and the fouling bottom evaporator room 14, the water production rate of system or the normal operation of system can be had a strong impact on, in order to avoid the generation of this problem, the inwall of bottom heater 15 has been installed transverter 10, it can make the inwall of bottom heater 15 produce the elastic oscillation of high frequency short arc, make wall produce shearing force thus there is the function of the anti-stick wall of efficient antiscale, ensure that and in system cloud gray model, keep clean state bottom evaporator room 14.

The second process mode: by day when luminous energy 5 abundance, only opens solar thermal collection system 4, close compressor system 8.

Each valve status: the valve being in closing condition has suction port of compressor control valve 8.1, vaporizer vapour passage discharge control valve 8.3, base of evaporator steam heating inlet adjustment valve 8.4, base of evaporator steam heating discharge control valve 8.6, excised from system by compressor assembly 8, all the other valves are in open mode.

Now evaporator inlet control valve 9.4, evaporator outlet control valve 9.5 are opened, the heating seawater of vaporizer heating of seawater inlet adjustment valve 6.2 is entered simultaneously vaporizer sea water passage 9.1 and vaporizer vapour passage 9.2 heating fumigators 9, sea water spray mist system is the same with the first process mode with floor heating system; Steam unlike evaporator room 14 is directly entered after condenser 2 carries out condensation heat transfer by the first steam control valve 8.2 and the second steam control valve 8.5 after 13 steam separators discharges finished product fresh water from relief outlet 12.

The third process mode: at luminous energy 5 when not enough or night, solar thermal collection system 4 can not play a role, and only has compressor assembly 8 to work.

Each valve status: the valve being in closing condition has vaporizer heating of seawater inlet adjustment valve 6.2, base of evaporator heating of seawater inlet adjustment valve 6.3, base of evaporator heating of seawater discharge control valve 6.5, second steam control valve 8.5, and all the other valves are in open mode.

After vaporizer heating of seawater inlet adjustment valve 6.2 and base of evaporator heating of seawater inlet adjustment valve 6.3 are closed, the seawater through condenser 2 preheating directly enters fog system 7 by solar thermal collection system 4, now evaporator inlet control valve 9.4, evaporator outlet control valve 9.5 is opened, the high-temperature steam that compressor assembly 8 produces enters vaporizer sea water passage 9.1 simultaneously, vaporizer vapour passage 9.2, first after the seawater discharge in vaporizer sea water passage 9.1 is clean, close vaporizer heating of seawater discharge control valve 6.4 again, high-temperature steam in vaporizer 9 is discharged through vaporizer sea water passage 9.1 and vaporizer vapour passage 9.2 and is entered bottom heater 15 through vaporizer vapour passage discharge control valve 8.3 and base of evaporator steam heating inlet adjustment valve 8.4, through base of evaporator steam heating discharge control valve 8.6 steam entered after condenser 2 carries out condensation heat transfer again and finished product fresh water is discharged from relief outlet 12.

By regulating seawater spraying variable valve 6.1, obtaining different dry and to wet the crystal salt of degree.

[vaporizer]

Refer to Fig. 2, described vaporizer 9 is spiral-plate heat exchangers with three passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by three layers rolls and forms; There is the pillar stiffener that several 5mm are high between three-ply metal, or extrude the high salient point of 5mm on a metal plate, keep the distance between three-ply metal to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness of vaporizer sea water passage 9.1 and vaporizer distilling path 9.3 lower edges place be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy; Be welded with transfer of ultrasonic energy block in the fixed position at vaporizer vapour passage 9.2 lower edges place, all the other positions keep unimpeded up and down, so that seawater droplet passes through and evaporation.The current same heat interchanging area of efficiency ratio of the making processing of this vaporizer or the interchanger of heat exchange power exceed more than 40%, and production cost is low by more than 20%; Be welded with the position installation transverter 10 of transfer of ultrasonic energy block in addition at correspondence position, there is the function of antiscaling, descaling and enhanced heat exchange.

The principle of work of vaporizer 9: when the first process mode, solar thermal collection system 4 and compressor assembly successively start, run simultaneously, seawater enters vaporizer sea water passage 9.1, compressed vapour enters vaporizer vapour passage 9.2, heats together to vaporizer distilling path 9.3 both sides of vaporizer 9; In the droplet descent of the seawater be preheated, absorb the heat part evaporation in evaporator room 14, be again heated rapidly when dropping to vaporizer distilling path 9.3 and evaporate.

During the second process mode, only open solar thermal collection system 4, close compressor system 8, open evaporator inlet control valve 9.4, evaporator outlet control valve 9.5, make the seawater heated through solar thermal collection system 4 enter vaporizer sea water passage 9.1, vaporizer vapour passage 9.2, be also heat the both sides of vaporizer distilling path 9.3 simultaneously simultaneously.

During the third process mode, compressor assembly 8 is only had to work, close solar thermal collection system 4, open evaporator inlet control valve 9.4, evaporator outlet control valve 9.5, make the steam heated through compressor assembly 8 enter vaporizer sea water passage 9.1, vaporizer vapour passage 9.2, be also heat the both sides of vaporizer distilling path 9.3 simultaneously simultaneously.

Vaporizer 9 vaporization efficiency: the vaporization efficiency of this evaporative process is very high, conservative reckoning, higher than more than 30% of general evaporator operation efficiency, this is because: the first, the Heating temperature of 9.1 vaporizer sea water passage and 9.2 vaporizer vapour passages is not less than 120 DEG C; The second, the particle on each heat exchange wall of 9 vaporizers is under the effect of 10 transverters, remain high speed elliptic motion, under the prerequisite ensureing vaporizer non-scaling, kinetic energy is provided again by the droplet evaporated, share when only having heat energy to the kinetic energy that droplet produces, be beneficial to the evaporation of droplet, so when seawater drops to after in 9.3 vaporizer distilling paths can be rapidly evaporated with the form of mist.

Vaporizer 9 Principle of Scale Prevention: the vaporizer used in the present invention is the interchanger with non-scaling or efficient anti-tartar function that particular design and special processing process make.First the sheet metal selected, on the basis ensureing seawater corrosion resistance, uses the material of good springiness; The two ends up and down of its secondary evaporator adopt wide metallic seal bar to carry out isolating passage, and adopt the technique of soldering integral solder, make to be formed up and down a closely knit tip plate configurations; Finally at the appropriate location of tip plate configurations welding transverter, the mechanical energy of the high frequency short arc of transverter is effectively delivered on each heat-transfer surface of vaporizer, make the particle of heat-transfer surface be in high speed elliptic motion state all the time, thus there is efficient antiscaling, descaling and enhancement of heat transfer function.And the vaporizer of other structure efficiently cannot transmit the energy of transverter, huge power loss can be caused, also just cannot realize the object of antiscaling, descaling and enhancement of heat transfer.

Vaporizer antiscaling, descaling principle of the present invention changes traditional character by changing heat-exchange working medium, sticks wall to be reduced to dirty material and to realize the passive method of antiscaling, descaling object.Vaporizer antiscaling, descaling principle of the present invention is the principle adopting initiatively antiscaling, descaling, namely the high speed elliptic motion of heat exchange wall particle is remained, cause the one-tenth of heat-exchange working medium dirt material cannot cohere on heat exchange wall, keep efficient antiscaling, descaling function, stop because the impact that the reason of fouling is brought is conducted heat, increased all problems such as corrosion, but also for being provided just kinetic energy by the material evaporated, the demand to hot kinetic energy can be reduced, thus improve vaporization efficiency further.

[condenser]

Refer to Fig. 3, described condenser 2 is spiral-plate heat exchangers with two passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by two layers rolls and forms; There is the pillar stiffener that several 5mm are high between two layers of metal sheet, or extrude the high salient point of 5mm on a metal plate, keep the distance between two layers of metal sheet to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness in lower edges place of two passages be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy.The current same heat interchanging area of efficiency ratio of the making processing of this condenser or the interchanger of heat exchange power exceed more than 40%, and production cost is low by more than 20%; Ultrasonic transducer 10 is welded with in addition in appropriate location, outside.

Described condenser 2 comprises seawater inlet passage 2.1, steam outlet passage 2.2, seawer outlet passage 2.3, steam-in passage 2.4.

Described condenser 2 principle of work is: seawater enters condenser 2 from seawater inlet passage 2.1, discharges from seawer outlet passage 2.3; Steam enters condenser 2 from steam-in passage 2.4, discharges water of condensation from steam outlet passage 2.2; Discharge water of condensation for convenience, outlet is arranged on the lower end of condenser.

Condenser 2 efficiency: this condenser 2 heat exchange efficiency is very high, this is because: the first, the material of wall-type heat exchange is less than the thick metal sheet of 1mm to roll and form, and the distance between two layers of metal sheet is 5mm, and the heat interchanging area of unit volume is large; The second, countercurrent heat exchange method is adopted to strengthen heat exchange efficiency; Three, the particle on each heat exchange wall of condenser, under the effect of 10 transverters, remains high speed elliptic motion, and under the prerequisite ensureing vaporizer non-scaling, the retention layer destroying again seawater side enhances exchange capability of heat; Filmwise condensation can be transformed into dropwise condensation at steam side.Theoretical according to phase-change heat transfer, during dropwise condensation, drip downwards because the condensation water on tube surface forms rapidly liquid pearl, the coefficient of heat transfer can improve nearly 40%, and heat exchange difference can control at 1 DEG C ~ about 2 DEG C.

Condenser 2 Principle of Scale Prevention: the condenser used in the present invention is the interchanger with non-scaling or efficient anti-tartar function that particular design and special processing process make.First the sheet metal selected, on the basis ensureing seawater corrosion resistance, uses the material of good springiness; Secondly the two ends up and down of condenser adopt wide metallic seal bar to carry out isolating passage, and adopt the technique of soldering integral solder, make to be formed up and down a closely knit tip plate configurations; Finally at the appropriate location of tip plate configurations welding transverter, the mechanical energy of the high frequency short arc of transverter is effectively delivered on each heat-transfer surface of condenser, make the particle of heat-transfer surface be in high speed elliptic motion state all the time, thus there is efficient antiscaling, descaling and enhancement of heat transfer function.And the condenser of other structure efficiently cannot transmit the energy of transverter, huge power loss can be caused, also just cannot realize the object of antiscaling, descaling and enhancement of heat transfer.

Condenser antiscaling, descaling principle of the present invention changes traditional character by changing heat-exchange working medium, sticks wall to be reduced to dirty material and to realize the passive method of antiscaling, descaling object; Condenser antiscaling, descaling principle of the present invention is the principle adopting initiatively antiscaling, descaling, namely the high speed elliptic motion of heat exchange wall particle is remained, cause the one-tenth of heat-exchange working medium dirt material cannot cohere on heat exchange wall, keep efficient antiscaling, descaling function, stop because the impact that the reason of fouling is brought is conducted heat, increased all problems such as corrosion.

[fog system]

Refer to Fig. 4, described fog system 7 comprises seawater admission passage 7.1, rotating mechanism 7.2, energy converter 7.3, spraying disc 7.4, edge spray holes 7.5, bottom spray hole 7.6.

Spraying disc 7.4 is made up of elastomeric titanium alloy material, uniform edge spray holes 7.5 is processed with at its edge, be processed with bottom spray hole 7.6 in its bottom surface, energy converter 7.3 is installed on it, seawater admission passage 7.1 and rotating mechanism 7.2 are also installed in the above.

When the seawater of preheating enters into spraying disc 7.4 central position through seawater admission passage 7.1, spraying disc 7.4 produces high-frequency resonant under the effect of energy converter 7.3, low speed rotation is produced under the driving of rotating mechanism 7.2, sprayed along edge spray holes 7.5 and bottom spray hole 7.6 by the droplet that ultrasonic energy is atomized, be evenly distributed in evaporator room 14, wait to be evaporated.

Principle of work: the droplet of seawater is more tiny in evaporator room, the effect of heat exchange is better, is easilier become steam by 9 evaporator heat exchange at short notice, and forms crystal salt below.The kind of current spraying gun has rotary atomizer, pneumatic atomizer, pressure atomizer and acoustic energy spraying gun, wherein the acoustic energy spraying gun mainly siren formula of air stream drives and zufolo formula spraying gun.Shortcoming system complex, the power consumption of above-mentioned spraying gun are comparatively large, work-ing life is not long, atomizing droplet is tiny not, also even not.7 fog systems in the present invention are the rotatable atomization techniques of ultrasonic rotary of 7.3 energy converters taking magnetostriction materials as core, and this technology has the advantages such as system is simple, control is convenient, atomizing effect is stable, long service life.This technology is when the rotating speed of 7.4 spraying discs is very low, also brine disposal can be become very tiny droplet, the main energetic of its atomization comes from 7.3 energy converters, the diameter range of the atomizing droplet of 7 fog systems just can be controlled easily by debugging output frequency, general adjustable between 5 microns to 100 microns, its advantage is that seawater is atomized into micron order drop, greatly reduces the size of seawater, adds the contact area of seawater and interchanger; And atomizing droplet size uniform, can get at micron order, be conducive to the carrying out of heat and mass, thus improves the heat exchange efficiency of 9 vaporizers.Because the circumferential speed of 7.4 spraying discs can control at below 10m/s, not high to the technical requirements of rotating mechanism.

Embodiment two

A kind of efficient sea water desalting system, described seawater desalination system comprises: condenser, water pump, solar thermal collection system, fog system, compressor assembly, vaporizer, transverter, steam separator, evaporator room, bottom heater, some valves.

Some valves comprise: seawater spraying variable valve, vaporizer heating of seawater inlet adjustment valve, base of evaporator heating of seawater inlet adjustment valve, vaporizer heating of seawater discharge control valve, base of evaporator heating of seawater discharge control valve, suction port of compressor control valve, first steam control valve, vaporizer vapour passage discharge control valve, base of evaporator steam heating inlet adjustment valve, second steam control valve, base of evaporator steam heating discharge control valve, evaporator inlet control valve, evaporator outlet control valve, crystal salt discharges control valve.

Described vaporizer is provided with vaporizer sea water passage, vaporizer vapour passage, vaporizer distilling path; Condenser is provided with seawater inlet, relief outlet, and condenser connects solar thermal collection system by water pump, and solar thermal collection system connects vaporizer sea water passage by vaporizer heating of seawater inlet adjustment valve.

The first end of described vaporizer sea water passage connects the first end of vaporizer vapour passage by evaporator inlet control valve; Second end of vaporizer sea water passage connects the second end of vaporizer vapour passage by evaporator outlet control valve.

The bottom of described vaporizer is provided with bottom heater, and bottom heater connects crystal salt and discharges control valve; Bottom heater is also provided with transverter; Vaporizer is arranged in evaporator room, and one end of evaporator room is provided with fog system, steam separator.

The first end of described bottom heater connects fog system by vaporizer heating of seawater discharge control valve, base of evaporator heating of seawater inlet adjustment valve, seawater spraying variable valve; Second end of bottom heater connects fog system, compressor assembly by base of evaporator steam heating inlet adjustment valve, the first steam control valve, is also provided with suction port of compressor control valve between the first steam control valve, compressor assembly; Compressor assembly connects vaporizer vapour passage.

Second end of vaporizer sea water passage is by the pipeline between vaporizer heating of seawater discharge control valve access condenser and water pump; Second end of vaporizer vapour passage is by the pipeline between vaporizer vapour passage discharge control valve access base of evaporator steam heating inlet adjustment valve, the first steam control valve.

In sum, the efficient sea water desalting system that the present invention proposes, can improve the utilization ratio of resource.

Here description of the invention and application is illustrative, not wants by scope restriction of the present invention in the above-described embodiments.Distortion and the change of embodiment disclosed are here possible, are known for the replacement of embodiment those those of ordinary skill in the art and the various parts of equivalence.Those skilled in the art are noted that when not departing from spirit of the present invention or essential characteristic, the present invention can in other forms, structure, layout, ratio, and to realize with other assembly, material and parts.When not departing from the scope of the invention and spirit, can other distortion be carried out here to disclosed embodiment and change.

Claims

1. an efficient sea water desalting system, it is characterized in that, described seawater desalination system comprises: condenser (2), water pump (3), solar thermal collection system (4), fog system (7), compressor assembly (8), vaporizer (9), transverter (10), steam separator (13), evaporator room (14), bottom heater (15), some valves;

Some valves comprise: seawater spraying variable valve (6.1), vaporizer heating of seawater inlet adjustment valve (6.2), base of evaporator heating of seawater inlet adjustment valve (6.3), vaporizer heating of seawater discharge control valve (6.4), base of evaporator heating of seawater discharge control valve (6.5), suction port of compressor control valve (8.1), first steam control valve (8.2), vaporizer vapour passage discharge control valve (8.3), base of evaporator steam heating inlet adjustment valve (8.4), second steam control valve (8.5), base of evaporator steam heating discharge control valve (8.6), evaporator inlet control valve (9.4), evaporator outlet control valve (9.5), crystal salt discharges control valve (11),

Described vaporizer (9) is provided with vaporizer sea water passage (9.1), vaporizer vapour passage (9.2), vaporizer distilling path (9.3); Condenser (2) is provided with seawater inlet (1), relief outlet (12), condenser (2) connects solar thermal collection system (4) by water pump (3), and solar thermal collection system (4) connects vaporizer sea water passage (9.1) by vaporizer heating of seawater inlet adjustment valve (6.2);

The first end of described vaporizer sea water passage (9.1) connects the first end of vaporizer vapour passage (9.2) by evaporator inlet control valve (9.4); Second end of vaporizer sea water passage (9.1) connects the second end of vaporizer vapour passage (9.2) by evaporator outlet control valve (9.5);

The bottom of described vaporizer (9) is provided with bottom heater (15), and bottom heater (15) connects crystal salt and discharges control valve (11); Bottom heater (15) is also provided with transverter (10); Vaporizer (9) is arranged in evaporator room (14), and one end of evaporator room (14) is provided with fog system (7), steam separator (13);

The first end of described bottom heater (15) connects fog system (7) by vaporizer heating of seawater discharge control valve (6.4), base of evaporator heating of seawater inlet adjustment valve (6.3), seawater spraying variable valve (6.1); Second end of bottom heater (15) connects fog system (7), compressor assembly (8) by base of evaporator steam heating inlet adjustment valve (8.4), the first steam control valve (8.2), is also provided with suction port of compressor control valve (8.1) between the first steam control valve (8.2), compressor assembly (8); Compressor assembly (8) connects vaporizer vapour passage (9.2);

Second end of vaporizer sea water passage (9.1) is by the pipeline between vaporizer heating of seawater discharge control valve (6.4) access condenser (2) and water pump (3); Second end of vaporizer vapour passage (9.2) is by the pipeline between vaporizer vapour passage discharge control valve (8.3) access base of evaporator steam heating inlet adjustment valve (8.4), the first steam control valve (8.2);

Bottom heater (15) is by the pipeline between base of evaporator heating of seawater discharge control valve (6.5) access condenser (2) and water pump (3); Bottom heater (15) accesses the pipeline between the second steam control valve (8.5) and condenser (2) by base of evaporator steam heating discharge control valve (8.6);

Evaporation of seawater flow process comprises Three models:

The first process mode: solar thermal collection system (4) and compressor assembly successively start, run simultaneously; By day when sunlight abundance, open solar thermal collection system (4) and compressor assembly (8), water production rate is large simultaneously;

Each valve status: the valve being in closing condition has the first steam control valve (8.2), base of evaporator steam heating inlet adjustment valve (8.4), base of evaporator steam heating discharge control valve (8.6), evaporator inlet control valve (9.4), evaporator outlet control valve (9.5), and all the other valves are in open mode;

The heat that the bottom-heated of evaporator room (14) is produced by solar thermal collection system (4) completes, the heat that compressor assembly (8) is produced without the bottom heater (15) of evaporator room (14), and is used to direct heating seawater;

First start solar thermal collection system (4), seawater carries out thermal exchange through seawater inlet (1) in condenser (2), by the heating of seawater entered, device (2) the preliminarily heated seawater that is condensed enters solar thermal collection system (4) absorption luminous energy (5) through water pump (3) pressurization and heats, then three tunnels are divided into, the first via enters evaporator room (14) through seawater spraying variable valve (6.1), through fog system (7), the seawater heated is sprayed again, evaporated by vaporizer sea water passage (9.1) heating after droplet drops to (9.3) vaporizer distilling path, second tunnel enters vaporizer sea water passage (9.1) through evaporator heating of seawater inlet adjustment valve (6.2), heat to vaporizer (9), then be discharged to water pump (3) entrance through evaporator heating of seawater discharge control valve (6.4) to circulate again, make full use of the heat of heating seawater, 3rd tunnel enters bottom heater (15) through base of evaporator heating of seawater inlet adjustment valve (6.3), by the further heating evaporation of crystal salt settled out,

Quantity of steam in room to be evaporated (14) to a certain extent after, restart compressor assembly (8), steam in evaporator room (14) enters compressor assembly (8) through the separation of steam separator (13) and recompresses, after vapor temperature is improved further, enter vaporizer vapour passage (9.2) to heat to vaporizer (9), then condenser (2) is entered through evaporator vapour passage discharge control valve (8.3) and the second steam control valve (8.5) and seawater carries out condensing heat-exchange, the vapor condensation of desalination is become fresh water, discharge from relief outlet (12) through finished product fresh water,

After solar thermal collection system (4) and all normal startup of compressor assembly (8), observe crystal salt and discharge the state that control valve (11) discharges crystal salt, by regulating seawater spraying variable valve (6.1), vaporizer heating of seawater inlet adjustment valve (6.2), base of evaporator heating of seawater inlet adjustment valve (6.3), different dry can be obtained and to wet the crystal salt of degree;

Scale removal problem: crystal salt easily glutinous wall and the fouling dropping to evaporator room (14) bottom, the water production rate of system or the normal operation of system can be had a strong impact on, in order to avoid the generation of this problem, the inwall of bottom heater (15) has been installed transverter (10), it can make the inwall of bottom heater (15) produce the elastic oscillation of high frequency short arc, make wall produce shearing force thus there is the function of the anti-stick wall of efficient antiscale, ensure that evaporator room (14) bottom keeps clean state in system cloud gray model;

The second process mode: time luminous energy (5) is sufficient by day, only open solar thermal collection system (4), close compressor system (8);

Each valve status: the valve being in closing condition has suction port of compressor control valve (8.1), vaporizer vapour passage discharge control valve (8.3), base of evaporator steam heating inlet adjustment valve (8.4), base of evaporator steam heating discharge control valve (8.6), excised from system by compressor assembly (8), all the other valves are in open mode;

Now evaporator inlet control valve (9.4), evaporator outlet control valve (9.5) are opened, the heating seawater that vaporizer heating of seawater inlet adjustment valve (6.2) comes is entered vaporizer sea water passage (9.1) and vaporizer vapour passage (9.2) heating fumigators (9) simultaneously, and fog system (7) is the same with the first process mode with bottom heater (15); Steam unlike evaporator room (14) is directly entered after condenser (2) carries out condensation heat transfer by the first steam control valve (8.2) and the second steam control valve (8.5) after steam separator (13) discharges finished product fresh water from relief outlet (12);

The third process mode: at luminous energy (5) when not enough or night, solar thermal collection system (4) can not play a role, and only has compressor assembly (8) to work;

Each valve status: the valve being in closing condition has vaporizer heating of seawater inlet adjustment valve (6.2), base of evaporator heating of seawater inlet adjustment valve (6.3), base of evaporator heating of seawater discharge control valve (6.5), the second steam control valve (8.5), and all the other valves are in open mode;

After vaporizer heating of seawater inlet adjustment valve (6.2) and base of evaporator heating of seawater inlet adjustment valve (6.3) are closed, the seawater through condenser (2) preheating directly enters fog system (7) by solar thermal collection system (4), now evaporator inlet control valve (9.4), evaporator outlet control valve (9.5) is opened, the high-temperature steam that compressor assembly (8) produces enters vaporizer sea water passage (9.1) simultaneously, vaporizer vapour passage (9.2), first after the seawater discharge in vaporizer sea water passage (9.1) is clean, close vaporizer heating of seawater discharge control valve (6.4) again, high-temperature steam in vaporizer (9) is discharged through vaporizer sea water passage (9.1) and vaporizer vapour passage (9.2) and is entered bottom heater (15) through vaporizer vapour passage discharge control valve (8.3) and base of evaporator steam heating inlet adjustment valve (8.4), through base of evaporator steam heating discharge control valve (8.6) steam entered after condenser (2) carries out condensation heat transfer again and finished product fresh water is discharged from relief outlet (12),

By regulating seawater spraying variable valve (6.1), obtaining different dry and to wet the crystal salt of degree;

Described vaporizer (9) is a spiral-plate heat exchanger with three passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by three layers rolls and forms; There is the pillar stiffener that several 5mm are high between three-ply metal, or extrude the high salient point of 5mm on a metal plate, keep the distance between three-ply metal to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness of vaporizer sea water passage (9.1) and vaporizer distilling path (9.3) lower edges place be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy; Be welded with transfer of ultrasonic energy block in the fixed position at vaporizer vapour passage (9.2) lower edges place, all the other positions keep unimpeded up and down, so that seawater droplet passes through and evaporation; Be welded with position installation transverter (10) of transfer of ultrasonic energy block in addition at correspondence position, there is the function of antiscaling, descaling and enhanced heat exchange;

When the first process mode, solar thermal collection system (4) and compressor assembly successively start, run simultaneously, seawater enters vaporizer sea water passage (9.1), compressed vapour enters vaporizer vapour passage (9.2), heats together to vaporizer distilling path (9.3) both sides of vaporizer (9); In the droplet descent of the seawater be preheated, absorb the heat part evaporation in evaporator room (14), be again heated rapidly when dropping to vaporizer distilling path (9.3) and evaporate;

During the second process mode, only open solar thermal collection system (4), close compressor system (8), open evaporator inlet control valve (9.4), evaporator outlet control valve (9.5), make the seawater heated through solar thermal collection system (4) enter vaporizer sea water passage (9.1), vaporizer vapour passage (9.2), be also heat the both sides of vaporizer distilling path (9.3) simultaneously simultaneously.

During the third process mode, compressor assembly (8) is only had to work, close solar thermal collection system (4), open evaporator inlet control valve (9.4), evaporator outlet control valve (9.5), make the steam heated through compressor assembly (8) enter vaporizer sea water passage (9.1), vaporizer vapour passage (9.2), be also heat the both sides of vaporizer distilling path (9.3) simultaneously simultaneously;

Described condenser (2) is a spiral-plate heat exchanger with two passages, and the metal sheet being less than the thick seawater corrosion resistance of 1mm by two layers rolls and forms; There is the pillar stiffener that several 5mm are high between two layers of metal sheet, or extrude the high salient point of 5mm on a metal plate, keep the distance between two layers of metal sheet to be 5mm, also ensure that the overall compressive strength of interchanger simultaneously; In coiling process, the direct throat thickness in lower edges place of two passages be 5mm, width is not less than the metal strip of the corrosion-resistant of 20mm and good springiness, play sealing and transmit the effect of ultrasonic energy; Ultrasonic transducer (10) is welded with in addition in appropriate location, outside;

Described condenser (2) comprises seawater inlet passage (2.1), steam outlet passage (2.2), seawer outlet passage (2.3), steam-in passage (2.4);

Described condenser (2) principle of work is: seawater enters condenser (2) from seawater inlet passage (2.1), discharges from seawer outlet passage (2.3); Steam enters condenser (2) from steam-in passage (2.4), discharges water of condensation from steam outlet passage (2.2); Discharge water of condensation for convenience, outlet is arranged on the lower end of condenser;

Described fog system (7) comprises seawater admission passage (7.1), rotating mechanism (7.2), energy converter (7.3), spraying disc (7.4), edge spray holes (7.5), bottom spray hole (7.6);

Spraying disc (7.4) is made up of elastomeric titanium alloy material, uniform edge spray holes (7.5) is processed with at its edge, bottom spray hole (7.6) is processed with in its bottom surface, energy converter (7.3) is installed on it, seawater admission passage (7.1) and rotating mechanism (7.2) are also installed in the above;

When the seawater of preheating enters into spraying disc (7.4) central position through seawater admission passage (7.1), spraying disc (7.4) produces high-frequency resonant under the effect of energy converter (7.3), low speed rotation is produced under the driving of rotating mechanism (7.2), sprayed along edge spray holes (7.5) and bottom spray hole (7.6) by the droplet that ultrasonic energy is atomized, be evenly distributed in evaporator room (14), wait to be evaporated.

2. an efficient sea water desalting system, it is characterized in that, described seawater desalination system comprises: condenser (2), water pump (3), solar thermal collection system (4), fog system (7), compressor assembly (8), vaporizer (9), transverter (10), steam separator (13), evaporator room (14), bottom heater (15), some valves;

Described condenser (2) connects solar thermal collection system (4) by water pump (3); Solar thermal collection system (4) connects vaporizer (9); Vaporizer (9) is arranged in evaporator room (14),

The bottom of described vaporizer (9) is provided with bottom heater (15), and bottom heater (15) connects crystal salt and discharges control valve (11); Bottom heater (15) is also provided with transverter (10); Vaporizer (9) is arranged in evaporator room (14), and one end of evaporator room (14) is provided with fog system (7), steam separator (13); Described bottom heater (15) connects fog system (7), compressor assembly (8).

3. efficient sea water desalting system according to claim 2, is characterized in that:

Described vaporizer (9) is provided with vaporizer sea water passage (9.1), vaporizer vapour passage (9.2), vaporizer distilling path (9.3);

Described condenser (2) is provided with seawater inlet (1), relief outlet (12), condenser (2) connects solar thermal collection system (4) by water pump (3), and solar thermal collection system (4) connects vaporizer sea water passage (9.1) by vaporizer heating of seawater inlet adjustment valve (6.2);

Bottom heater (15) is by the pipeline between base of evaporator heating of seawater discharge control valve (6.5) access condenser (2) and water pump (3); Bottom heater (15) accesses the pipeline between the second steam control valve (8.5) and condenser (2) by base of evaporator steam heating discharge control valve (8.6).

4. efficient sea water desalting system according to claim 2, is characterized in that:

Evaporation of seawater flow process comprises Three models:

Drop to crystal salt easily glutinous wall and the fouling of evaporator room (14) bottom, the water production rate of system or the normal operation of system can be had a strong impact on, in order to avoid the generation of this problem, the inwall of bottom heater (15) has been installed transverter (10), it can make the inwall of bottom heater (15) produce the elastic oscillation of high frequency short arc, make wall produce shearing force thus there is the function of the anti-stick wall of efficient antiscale, ensure that evaporator room (14) bottom keeps clean state in system cloud gray model;

By regulating seawater spraying variable valve (6.1), obtaining different dry and to wet the crystal salt of degree.

5. efficient sea water desalting system according to claim 2, is characterized in that:

During the third process mode, compressor assembly (8) is only had to work, close solar thermal collection system (4), open evaporator inlet control valve (9.4), evaporator outlet control valve (9.5), make the steam heated through compressor assembly (8) enter vaporizer sea water passage (9.1), vaporizer vapour passage (9.2), be also heat the both sides of vaporizer distilling path (9.3) simultaneously simultaneously.

6. efficient sea water desalting system according to claim 2, is characterized in that:

Described condenser (2) principle of work is: seawater enters condenser (2) from seawater inlet passage (2.1), discharges from seawer outlet passage (2.3); Steam enters condenser (2) from steam-in passage (2.4), discharges water of condensation from steam outlet passage (2.2); Discharge water of condensation for convenience, outlet is arranged on the lower end of condenser.

7. efficient sea water desalting system according to claim 2, is characterized in that: