CN110217849A - A kind of low temperature heat seawater desalination system and method - Google Patents
A kind of low temperature heat seawater desalination system and method Download PDFInfo
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- CN110217849A CN110217849A CN201910631811.4A CN201910631811A CN110217849A CN 110217849 A CN110217849 A CN 110217849A CN 201910631811 A CN201910631811 A CN 201910631811A CN 110217849 A CN110217849 A CN 110217849A
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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
- C02F1/16—Treatment of water, waste water, or sewage by heating by distillation or evaporation using waste heat from other processes
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
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Abstract
The invention discloses a kind of low temperature heat seawater desalination system and methods, including diesel residual heat to utilize system, and the humidification dehumidifying seawater desalination system connecting with diesel engine system；The humidification dehumidifying seawater desalination system includes evaporator, and the heat exchange unit being connect with evaporator its water inlet, and the solar air heat collection unit being connect with evaporator its air inlet, and the condenser being connect with evaporator its steam (vapor) outlet, and the strong brine bucket being connect with evaporator its water outlet；The evaporator is connect by air delivering pipeline with exhaust emissions mechanism；The heat exchange unit is connect with cooling water circulation；The waste heat of low temperature heat seawater desalination system of the invention and method, the waste gas residual heat generated at work using diesel engine and its steel bushing cooling water provides heat source for humidification dehumidifying seawater desalination system, improves energy utilization rate, reduces sea water desalination cost；Meanwhile being aided with solar air heat collection unit heating, improve evaporation rate and making water.
Description
Technical field
The present invention relates to a kind of low temperature heat seawater desalination system and methods, belong to field of sea water desalting technology.
Background technique
There is largely available waste heat on ship, including diesel engine exhaust waste heat and cooling water heat；In order to prevent
The oxide etch diesel engine of sulfur-bearing in exhaust gas is generally discharged into the exhaust gas temperature in atmosphere not less than 150 DEG C；And cylinder cold water
Water water temperature is 60 ~ 85 DEG C；Above-mentioned waste heat can be recycled, and be applied to exhaust boiler power generation, sea water desalination, fuel oil tank
Heating and air-conditioning etc.；Water is the important leverage of all life existence as one of substance most common on the earth, human body
70% is made of water；The marine sea water desalination device device is the important equipment of marine ship, the fine or not direct relation of energy saving
To the whole energy of ship；Therefore, the waste heat of moral character different on ship is applied in seawater desalination system, sea can be substantially reduced
The cost and boat diesel engine gross efficiency is greatly improved that water is desalinated, realize the energy-efficient of desalting process.
Summary of the invention
To solve the above problems, utilizing bavin the invention proposes a kind of low temperature heat seawater desalination system and method
The waste heat of waste gas residual heat and its steel bushing cooling water that oil machine generates at work provides heat source for humidification dehumidifying seawater desalination system；
It is aided with solar air heat collection unit heating simultaneously, improve evaporation rate and makes water.
Low temperature heat seawater desalination system of the invention, including diesel residual heat utilize system, and with diesel engine system
The humidification dehumidifying seawater desalination system of system connection, and system and humidification dehumidifying seawater desalination system are utilized with diesel residual heat respectively
The power control cabinet electricly connected；The diesel residual heat includes exhaust emissions mechanism and cooling water circulation using system；Former sea
Water is delivered to cooling water circulation and humidification dehumidifying seawater desalination system through seawater transfer pipeline by sea water pump；The humidification
The seawater desalination system that dehumidifies includes evaporator, and the heat exchange unit connecting with evaporator its water inlet, and with its air inlet of evaporator
The solar air heat collection unit of mouthful connection, and condenser connect with evaporator its steam (vapor) outlet, and it is discharged with evaporator
The strong brine bucket of mouth connection；The evaporator is connect by air delivering pipeline with exhaust emissions mechanism；The heat exchange unit and cooling
Water circulation mechanism connection；The waste heat of the waste gas residual heat and its steel bushing cooling water that are generated at work using diesel engine is humidification dehumidifying
Seawater desalination system provides heat source, improves energy utilization rate, reduces thermal loss, reduces sea water desalination cost；Meanwhile being aided with too
Positive energy air heat-collecting unit heating, improves evaporation rate and makes water；
The heat exchange unit includes heat exchanger, and the constant temperature sea with water temperature sensor connecting with its water outlet of heat exchanger
Bucket；Its heat-exchange end of the heat exchanger is connect with cooling water circulation；Its water inlet end of the heat exchanger and seawater transfer pipeline
Connection；By inlet pipeline, its water inlet is connect its water outlet of the constant temperature seawater bucket with evaporator, and is installed on inlet pipeline
There is metering pump, heat exchanger is connect with cooling water circulation, so that cooling water and former seawater carry out heat exchange in heat exchanger,
Former seawater is preheated, and the seawater after preheating is stored into constant temperature seawater bucket, is steamed for the spray in subsequent evaporation device
Hair improves evaporation efficiency；
The solar air heat collection unit includes solar thermal collector, and the frequency conversion connecting with solar thermal collector its inlet end
Blower；Through air inlet pipeline, its air inlet is connect its outlet side of the solar thermal collector with evaporator；Utilize solar thermal collector
Convert the solar into thermal energy, extraneous cold dry air heated, hot-air is obtained, for the seawater to make heat exchange after preheating,
Moisture in seawater is sufficiently evaporated, and evaporation efficiency is high, wherein it is existing equipment to solar thermal collector, is
With the air collector of the non-medium of air, when solar thermal collector work, cold air enters solar energy heating through frequency conversion fan
In device, solar radiation is projected on absorber plate through transparent cover plate, is converted to thermal energy by the energy that absorber plate absorbs, then will absorb
Thermal energy be transferred to cold air so that air temperature increase, and through its outlet side of solar thermal collector export；
Its water outlet of the condenser, which is connected with, is condensed out water pipe；It is described to be condensed out water pipe and be connected to light salt brine through outlet three way valve
Bucket and fresh-water cask；Described be condensed out at water pipe is equipped with salinity meter, and salinity meter and outlet three way valve pass through power control cabinet communication link
It connecing, condensed water body is condensed out water pipe output, and detects water body salinity by salinity meter, if salinity value is more than preset value,
The outlet three way threshold switch for being condensed out water pipe Yu light salt brine bucket is then opened, the water body that salinity is more than preset value is delivered to light salt brine
It is stored in bucket, can be used for subsequent distillation desalination again, can also used to other not high occasions of water quality requirement；If salinity meter is examined
The salinity value of survey is less than or equal to preset value, then opens the outlet three way threshold switch for being condensed out water pipe and fresh-water cask, salinity is fitted
Suitable water body, which is delivered in fresh-water cask, to be stored, and drinking water etc. is used as；Condensed water body is separated by the detection of salinity meter
Conveying, avoids polluting the water body desalinated because part water body salinity is excessively high, improves the Water quality of desalination；The condenser its
Condensation water inlet end is connect by inlet triplet for water valve with seawater transfer pipeline.
Further, the evaporator includes outer housing, and runs through along outer housing length direction and be installed on inside outer housing
Heating tube bundle, and be arranged in parallel in the spray head above heating tube bundle；Its water inlet of the evaporator and steam (vapor) outlet difference
It is set at the top of outer housing；Its water outlet of the evaporator and air inlet are respectively arranged at outer housing bottom；The evaporator its
Bubbler is installed at air inlet；Described spray head the upper end is connected with spray tube；The spray tube is vertically installed in outer housing
Inside, and its water inlet is connect with evaporator for spray tube the upper end；The heating tube bundle is by end cap, and is fixedly connected in end cap
More single u-shaped heat transfer tube groups at；The end cap is formed with inlet chamber and outlet chamber every setting by partition, and inlet chamber and outlet chamber front end
It is respectively arranged with exhaust gas inlet and waste gas outlet；Each described its inlet end of U-shaped heat-transfer pipe and outlet side respectively with end cap into
Air cavity and outlet chamber connection；The exhaust gas inlet is connect by air delivering pipeline with the flue of exhaust emissions mechanism；The exhaust gas goes out
Mouth is connect through air delivering pipeline with air purifier, and the exhaust gas of diesel emission enters end cap by exhaust gas inlet by air delivering pipeline
Inlet chamber, and be sent into multiple U-shaped heat-transfer pipes simultaneously, meanwhile, seawater is fed through steaming through inlet pipeline by metering pump after preheating
The water inlet of device is sent out, and is from top to bottom sprayed to pre- hot sea water on heating tube bundle by spray tube and spray head, when preheating sea
When water and U-shaped heat transfer pipe contacts, violent heat exchange reaction occurs；At the same time, frequency conversion fan will be heated by solar thermal collector
Air afterwards is delivered in evaporator through the air inlet of evaporator, and generates air bubble by bubbler, and hot air bubble is floating
It is moved upwards under power effect, vigorous agitation is carried out to the seawater after heating by air bubble, so that hot-air and seawater carry out heat
Amount exchange, waste heat make the boiling sea water in evaporator, and the humid air after humidification enters in condenser through steam (vapor) outlet.
As preferred embodiment, its air inlet of the frequency conversion fan is equipped with filter screen, in the air inlet of frequency conversion fan
Mouthful place installation filter screen, can by air granule foreign and dust remove, prevent in air impurity entrance and occluding device,
Equipment operational safety and Water quality are improved, is avoided because of the impurity polluted-water in air；Its air outlet of the frequency conversion fan is logical
Air hose is crossed to connect with solar thermal collector；Air temperature sensor and air three-way valve are installed, and empty on the air inlet pipeline
Gas temperature sensor and air three-way valve are communicated to connect by power control cabinet；Its other end of the air three-way valve passes through circulation line
It is connected on the air hose between frequency conversion fan and solar thermal collector, installation is for detecting through solar energy heating on air inlet pipeline
The air temperature sensor of air temperature value after device heating, by air temperature sensor to be delivered to the temperature of evaporator into
Row detection opens the air three-way valve of air inlet pipeline and circulation line if being lower than preset temperature, so that lower than preset temperature
The inlet end that air can be delivered to again solar thermal collector by circulation line heats again；If the air themperature after heating
Reach preset temperature, then open the air three-way valve at air inlet pipeline both ends, the air after heating is enabled to pass through admission line
It is delivered in evaporator.
Further, its outlet end is connect its heat exchange liquid feeding end of the heat exchanger with cooling water circulation, and heat exchanger
Flow control valve is installed on its pipeline to exchange heat between liquid feeding end and cooling water circulation its outlet end；The heat exchanger its
Exchanging heat, its liquid feeding end is connect outlet end with cooling water circulation.
As preferred embodiment, the condenser its be condensed out water end (W.E.) by condensation cycle pump through circulating condensing pipe with
The seawater transfer pipeline of its water inlet end of heat exchanger connects, and the steam of evaporator output carries out hot friendship with former seawater within the condenser
It changes, is heated to obtain just hot sea water to former seawater while steam condenses, then the initial heat sea exported after condenser can exchanging heat
Water is delivered to heat exchanger and carries out reheating, and exports through heat exchanger into constant temperature seawater bucket and store.
Further, dish type heat exchanger tube is provided with inside the heat exchanger and condenser.
The method of low temperature heat seawater desalination system of the invention, the described method comprises the following steps:
The first step opens the inlet triplet for water valve access on the seawater transfer pipeline that connect with heat exchanger, enable original seawater through
Seawater delivery pipe is fed through in heat exchanger；At the same time, its steel bushing cooling water of diesel engine is fed through the heat-exchange end of heat exchanger, so that
Former seawater and cooling water carry out heat exchange in heat exchanger, the seawater preheated, and the seawater of preheating is stored to constant temperature sea
In bucket；
Second step opens metering pump, the seawater preheated in constant temperature seawater bucket is pumped to the water inlet of evaporator by inlet pipeline
At mouthful, and pre- hot sea water is from top to bottom sprayed on heating tube bundle by spray tube and spray head；Meanwhile exhaust emissions mechanism
Tail gas be delivered in the heating tube bundle of evaporator by air delivering pipeline, when the seawater of preheating and when U-shaped heat transfer pipe contacts, occur
Violent heat exchange reaction；Later, frequency conversion fan conveys the air after being heated by solar thermal collector through the air inlet of evaporator
Air bubble is generated into evaporator, and by bubbler, hot air bubble moves upwards under buoyancy, passes through air bubble pair
Seawater after heating carries out vigorous agitation, exchanges so that hot-air carries out heat with seawater, waste heat makes the seawater in evaporator
It boils, the humid air after humidification enters in condenser through steam (vapor) outlet；The strong brine of base of evaporator then dispatch to strong brine
In bucket；
Third step opens the inlet triplet for water valve access on the seawater transfer pipeline connecting with condenser, so that former Mare Frigoris water is by sea
Water pump is sent into condenser, and vapor is condensed into water droplet to the cold, and falls under its own gravity, and pass through condensation of water
Pipe output；
4th step, the water body by being condensed out water pipe output detects water body salinity by salinity meter, if salinity value is more than preset value,
The outlet three way threshold switch for being condensed out water pipe Yu light salt brine bucket is opened, the water body that salinity is more than preset value is delivered to light salt brine bucket
Middle storage can be used for subsequent distillation desalination again, can also use to other not high occasions of water quality requirement；If salinity meter detects
Salinity value be less than or equal to preset value, then open and be condensed out the outlet three way threshold switch of water pipe and fresh-water cask, be suitable for by salinity
Water body be delivered in fresh-water cask and store, stored as drinking water.
Compared with prior art, low temperature heat seawater desalination system of the invention and method utilize bavin to the present invention
The waste heat of waste gas residual heat and its steel bushing cooling water that oil machine generates at work provides heat source for humidification dehumidifying seawater desalination system,
Energy utilization rate is improved, thermal loss is reduced, reduces sea water desalination cost；Meanwhile being aided with solar air heat collection unit heating,
It improves evaporation rate and makes water.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is evaporation structure schematic diagram of the invention.
Each component mark in attached drawing are as follows: 1- sea water pump, 2- seawater transfer pipeline, 3- evaporator, 31- outer housing, 32- heating
Tube bank, 321- end cap, 322-U type heat-transfer pipe, 323- inlet chamber, 324- outlet chamber, 325- exhaust gas inlet, 326- waste gas outlet,
33- spray head, its water inlet of 34- evaporator, its steam (vapor) outlet of 35- evaporator, its water outlet of 36- evaporator, 37- evaporator its
Air inlet, 38- spray tube, 4- heat exchange unit, 41- heat exchanger, 42- constant temperature seawater bucket, 5- solar air heat collection unit, 51-
Solar thermal collector, 52- frequency conversion fan, 6- condenser, 7- strong brine bucket, 8- air delivering pipeline, 9- inlet pipeline, 10- metering pump,
11- air inlet pipeline, 12- are condensed out water pipe, 13- outlet three way valve, 14- light salt brine bucket, 15- fresh-water cask, 16- salinity meter, 17- into
Water triple valve, 18- exhaust emissions mechanism, 19- cooling water circulation, 20- air purifier, 21- filter screen, 22- air hose,
23- air temperature sensor, 24- air three-way valve, 25- circulation line, 26- flow control valve, 27- condensation cycle pump, 28- are followed
Ring condenser pipe, 29- dish type heat exchanger tube, 30- bubbler.
Specific embodiment
Low temperature heat seawater desalination system as depicted in figs. 1 and 2, including diesel residual heat utilize system, and with
The humidification dehumidifying seawater desalination system of diesel engine system connection, and system and humidification dehumidifying seawater are utilized with diesel residual heat respectively
The power control cabinet (not shown) that desalination system electricly connects；The diesel residual heat using system includes exhaust emissions mechanism 18 and cold
But water circulation mechanism 19；Former seawater is delivered to cooling water circulation 19 through seawater transfer pipeline 2 by sea water pump 1 and humidification removes
Mare Humorum water desalination system；Humidification dehumidifying seawater desalination system includes evaporator 3, and connect with evaporator 3 its water inlet
Heat exchange unit 4, and the solar air heat collection unit 5 being connect with evaporator 3 its air inlet, and with its steam (vapor) outlet of evaporator 3
The condenser 6 of connection, and the strong brine bucket 7 being connect with evaporator 3 its water outlet；The evaporator 3 passes through air delivering pipeline 8 and tail
Gas discharging mechanism 18 connects；The heat exchange unit 4 is connect with cooling water circulation 19；The heat exchange unit 4 includes heat exchanger
41, and the constant temperature seawater bucket 42 with water temperature sensor being connect with its water outlet of heat exchanger 41；The heat exchanger 41 its
Heat-exchange end is connect with cooling water circulation 19；Described its water inlet end of heat exchanger 41 is connect with seawater transfer pipeline 2；The constant temperature
By inlet pipeline 9, its water inlet is connect its water outlet of seawater bucket 42 with evaporator 3, and is equipped with metering pump on inlet pipeline 9
10；The solar air heat collection unit 5 includes solar thermal collector 51, and connect with solar thermal collector 51 its inlet end
Frequency conversion fan 52；Through air inlet pipeline 11, its air inlet is connect with evaporator 3 for described its outlet side of solar thermal collector 51；It is described cold
Its water outlet of condenser 6, which is connected with, is condensed out water pipe 12；It is described to be condensed out water pipe 12 and be connected to light salt brine bucket through outlet three way valve 13
14 and fresh-water cask 15；Described be condensed out at water pipe 12 is equipped with salinity meter 16, and salinity meter 16 and outlet three way valve 13 pass through electricity
Control cabinet communication connection；Its condensation water inlet end of the condenser 6 is connect by inlet triplet for water valve 17 with seawater transfer pipeline 2.
The evaporator 3 includes outer housing 31, and runs through along 31 length direction of outer housing and be installed on inside outer housing 31
Heating tube bundle 32, and it is arranged in parallel in the spray head 33 of 32 top of heating tube bundle；Its water inlet 34 of the evaporator and steam go out
Mouth 35 is respectively arranged at 31 top of outer housing；Its water outlet 36 of the evaporator and air inlet 37 are respectively arranged at 31 bottom of outer housing
Portion；Bubbler 30 is installed at its air inlet 37 of the evaporator；Described 33 the upper end of spray head is connected with spray tube 38；It is described
Spray tube 38 is vertically installed in inside outer housing 31, and its water inlet 34 is connect 31 the upper end of spray tube with evaporator；It is described to add
Heat pipe bundle 32 is by end cap 321, and more single u-shaped heat-transfer pipes 322 composition being fixedly connected in end cap 321；The end cap 321 is by partition
It is formed with inlet chamber 323 and outlet chamber 324 every setting, and inlet chamber 233 and 324 front end of outlet chamber are respectively arranged with exhaust gas inlet
325 and waste gas outlet 326；Each described U-shaped its inlet end of heat-transfer pipe 232 and outlet side respectively with the inlet chamber of end cap 323 and
324 connection of outlet chamber；The exhaust gas inlet 325 is connect by air delivering pipeline 8 with the flue of exhaust emissions mechanism 18；The exhaust gas
Outlet 326 is connect through air delivering pipeline 8 with air purifier 20.
Described its air inlet of frequency conversion fan 52 is equipped with filter screen 21；Described its air outlet of frequency conversion fan 52 passes through air hose 22
It is connect with solar thermal collector 51；Air temperature sensor 23 and air three-way valve 24 are installed on the air inlet pipeline 11, and
Air temperature sensor 23 and air three-way valve 24 are communicated to connect by power control cabinet；Described its other end of air three-way valve 24 passes through
Circulation line 25 is connected on the air hose 22 between frequency conversion fan 52 and solar thermal collector 51.
The heat exchanger 41 its exchange heat liquid feeding end its outlet end is connect with cooling water circulation 19, and heat exchanger 41 its change
Flow control valve 26 is installed on pipeline between hot liquid feeding end and cooling water circulation 19 its outlet end；The heat exchanger 41
It exchanges heat, and its liquid feeding end is connect outlet end with cooling water circulation 19.
The condenser 6 its be condensed out water end (W.E.) by condensation cycle pump 17 through its water inlet of circulating condensing pipe 28 and heat exchanger 41
The seawater transfer pipeline 2 at end connects.
Dish type heat exchanger tube 29 is provided with inside the heat exchanger 41 and condenser 6.
The method of low temperature heat seawater desalination system of the invention, the described method comprises the following steps:
The first step, the first step open the inlet triplet for water valve access on the seawater transfer pipeline connecting with heat exchanger, so that former seawater
It can be fed through in heat exchanger through seawater delivery pipe；At the same time, its steel bushing cooling water of diesel engine is fed through the heat exchange of heat exchanger
End so that former seawater and cooling water carry out heat exchange in heat exchanger, the seawater preheated, and by the seawater of preheating store to
In constant temperature seawater bucket；
Second step opens metering pump, the seawater preheated in constant temperature seawater bucket is pumped to the water inlet of evaporator by inlet pipeline
At mouthful, and pre- hot sea water is from top to bottom sprayed on heating tube bundle by spray tube and spray head；Meanwhile exhaust emissions mechanism
Tail gas be delivered in the heating tube bundle of evaporator by air delivering pipeline, when the seawater of preheating and when U-shaped heat transfer pipe contacts, occur
Violent heat exchange reaction；Later, frequency conversion fan conveys the air after being heated by solar thermal collector through the air inlet of evaporator
Air bubble is generated into evaporator, and by bubbler, hot air bubble moves upwards under buoyancy, passes through air bubble pair
Seawater after heating carries out vigorous agitation, exchanges so that hot-air carries out heat with seawater, waste heat makes the seawater in evaporator
It boils, the humid air after humidification enters in condenser through steam (vapor) outlet；The strong brine of base of evaporator then dispatch to strong brine
In bucket；
Third step opens the inlet triplet for water valve access on the seawater transfer pipeline connecting with condenser, so that former Mare Frigoris water is by sea
Water pump is sent into condenser, and vapor is condensed into water droplet to the cold, and falls under its own gravity, and pass through condensation of water
Pipe output；
4th step, the water body by being condensed out water pipe output detects water body salinity by salinity meter, if salinity value is more than preset value,
The outlet three way threshold switch for being condensed out water pipe Yu light salt brine bucket is opened, the water body that salinity is more than preset value is delivered to light salt brine bucket
Middle storage can be used for subsequent distillation desalination again, can also use to other not high occasions of water quality requirement；If salinity meter detects
Salinity value be less than or equal to preset value, then open and be condensed out the outlet three way threshold switch of water pipe and fresh-water cask, be suitable for by salinity
Water body be delivered in fresh-water cask and store, stored as drinking water.
Low temperature heat seawater desalination system of the invention and method, more than the exhaust gas generated at work using diesel engine
The waste heat of heat and its steel bushing cooling water provides heat source for humidification dehumidifying seawater desalination system, improves energy utilization rate, reduces heat
Loss reduces sea water desalination cost；Meanwhile being aided with solar air heat collection unit heating, improve evaporation rate and making water.
Above-described embodiment is only better embodiment of the invention, therefore all according to structure described in present patent application range
It makes, the equivalent change or modification that feature and principle are done, is included in the scope of the patent application of the present invention.
Claims (7)
1. a kind of low temperature heat seawater desalination system, including diesel residual heat utilize system, and connect with diesel engine system
Humidification dehumidify seawater desalination system, and respectively with diesel residual heat using system and humidification dehumidify the automatically controlled company of seawater desalination system
The power control cabinet connect；The diesel residual heat includes exhaust emissions mechanism and cooling water circulation using system；Former seawater passes through
Sea water pump is delivered to cooling water circulation and humidification dehumidifying seawater desalination system through seawater transfer pipeline；It is characterized in that, institute
Stating humidification dehumidifying seawater desalination system includes evaporator, and the heat exchange unit connecting with evaporator its water inlet, and and evaporator
The solar air heat collection unit of its air inlet connection, and the condenser being connect with evaporator its steam (vapor) outlet, and and evaporator
The strong brine bucket of its water outlet connection；The evaporator is connect by air delivering pipeline with exhaust emissions mechanism；The heat exchange unit
It is connect with cooling water circulation；
The heat exchange unit includes heat exchanger, and the constant temperature sea with water temperature sensor connecting with its water outlet of heat exchanger
Bucket；Its heat-exchange end of the heat exchanger is connect with cooling water circulation；Its water inlet end of the heat exchanger and seawater transfer pipeline
Connection；By inlet pipeline, its water inlet is connect its water outlet of the constant temperature seawater bucket with evaporator, and is installed on inlet pipeline
There is metering pump；
The solar air heat collection unit includes solar thermal collector, and the frequency conversion connecting with solar thermal collector its inlet end
Blower；Through air inlet pipeline, its air inlet is connect its outlet side of the solar thermal collector with evaporator；
Its water outlet of the condenser, which is connected with, is condensed out water pipe；It is described to be condensed out water pipe and be connected to light salt brine through outlet three way valve
Bucket and fresh-water cask；Described be condensed out at water pipe is equipped with salinity meter, and salinity meter and outlet three way valve pass through power control cabinet communication link
It connects；Its condensation water inlet end of the condenser is connect by inlet triplet for water valve with seawater transfer pipeline.
2. low temperature heat seawater desalination system according to claim 1, which is characterized in that the evaporator includes outer
Shell, and run through the heating tube bundle being installed on inside outer housing along outer housing length direction, and be arranged in parallel on heating tube bundle
The spray head of side；Its water inlet of the evaporator and steam (vapor) outlet are respectively arranged at the top of outer housing；Its water outlet of the evaporator
Mouth and air inlet are respectively arranged at outer housing bottom；Bubbler is installed at its air inlet of the evaporator；The spray head its
Upper end is connected with spray tube；The spray tube is vertically installed in inside outer housing, and its water inlet of spray tube the upper end and evaporator
Mouth connection；The heating tube bundle by end cap, and more single u-shaped heat transfer tube groups for being fixedly connected in end cap at；The end cap is by partition
It is formed with inlet chamber and outlet chamber every setting, and inlet chamber and outlet chamber front end are respectively arranged with exhaust gas inlet and waste gas outlet；Often
One described its inlet end of U-shaped heat-transfer pipe and outlet side respectively with the inlet chamber of end cap and outlet chamber connection；The exhaust gas inlet is logical
Air delivering pipeline is crossed to connect with the flue of exhaust emissions mechanism；The waste gas outlet is connect through air delivering pipeline with air purifier.
3. low temperature heat seawater desalination system according to claim 1, which is characterized in that the frequency conversion fan its into
Air port is equipped with filter screen；Its air outlet of the frequency conversion fan is connect by air hose with solar thermal collector；The air inlet pipeline
On air temperature sensor and air three-way valve are installed, and air temperature sensor is communicated with air three-way valve by power control cabinet
Connection；Its other end of the air three-way valve is connected to the air hose between frequency conversion fan and solar thermal collector by circulation line
On.
4. low temperature heat seawater desalination system according to claim 1, which is characterized in that its heat exchange of the heat exchanger
Liquid feeding end is connect with its outlet end of cooling water circulation, and heat exchanger its exchange heat liquid feeding end and cooling water circulation its go out liquid
Flow control valve is installed on pipeline between end；The heat exchanger its exchange heat outlet end and its liquid feeding end of cooling water circulation
Connection.
5. low temperature heat seawater desalination system according to claim 1, which is characterized in that its condensation of the condenser
Water outlet pumps the seawater transfer pipeline through circulating condensing pipe with heat exchanger its water inlet end by condensation cycle and connect.
6. low temperature heat seawater desalination system according to claim 1, which is characterized in that the heat exchanger and condensation
Dish type heat exchanger tube is provided with inside device.
7. a kind of method of low temperature heat seawater desalination system, which is characterized in that the described method comprises the following steps:
The first step opens the inlet triplet for water valve access on the seawater transfer pipeline that connect with heat exchanger, enable original seawater through
Seawater delivery pipe is fed through in heat exchanger；At the same time, its steel bushing cooling water of diesel engine is fed through the heat-exchange end of heat exchanger, so that
Former seawater and cooling water carry out heat exchange in heat exchanger, the seawater preheated, and the seawater of preheating is stored to constant temperature sea
In bucket；
Second step opens metering pump, the seawater preheated in constant temperature seawater bucket is pumped to the water inlet of evaporator by inlet pipeline
At mouthful, and pre- hot sea water is from top to bottom sprayed on heating tube bundle by spray tube and spray head；Meanwhile exhaust emissions mechanism
Tail gas be delivered in the heating tube bundle of evaporator by air delivering pipeline, when the seawater of preheating and when U-shaped heat transfer pipe contacts, occur
Violent heat exchange reaction；Later, frequency conversion fan conveys the air after being heated by solar thermal collector through the air inlet of evaporator
Air bubble is generated into evaporator, and by bubbler, hot air bubble moves upwards under buoyancy, passes through air bubble pair
Seawater after heating carries out vigorous agitation, exchanges so that hot-air carries out heat with seawater, waste heat makes the seawater in evaporator
It boils, the humid air after humidification enters in condenser through steam (vapor) outlet；The strong brine of base of evaporator then dispatch to strong brine
In bucket；
Third step opens the inlet triplet for water valve access on the seawater transfer pipeline connecting with condenser, so that former Mare Frigoris water is by sea
Water pump is sent into condenser, and vapor is condensed into water droplet to the cold, and falls under its own gravity, and pass through condensation of water
Pipe output；
4th step, the water body by being condensed out water pipe output detects water body salinity by salinity meter, if salinity value is more than preset value,
The outlet three way threshold switch for being condensed out water pipe Yu light salt brine bucket is opened, the water body that salinity is more than preset value is delivered to light salt brine bucket
Middle storage can be used for subsequent distillation desalination again, can also use to other not high occasions of water quality requirement；If salinity meter detects
Salinity value be less than or equal to preset value, then open and be condensed out the outlet three way threshold switch of water pipe and fresh-water cask, be suitable for by salinity
Water body be delivered in fresh-water cask and store, stored as drinking water.
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| CN114409005A (en) * | 2022-01-26 | 2022-04-29 | 吉林大学 | Seawater desalination and solar power generation integrated device with waste heat utilization function |
| WO2022160366A1 (en) * | 2021-02-01 | 2022-08-04 | 房盼盼 | Star circulation system for ocean thermal energy conversion apparatus |
| CN114988155A (en) * | 2022-05-24 | 2022-09-02 | 铜陵有色兴铜机电制造有限公司 | Dust suppression cooling humidifying device |
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