CN105967258A - Solar energy and geothermal energy combined drive adsorption type seawater desalination system - Google Patents
Solar energy and geothermal energy combined drive adsorption type seawater desalination system Download PDFInfo
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- CN105967258A CN105967258A CN201610351470.1A CN201610351470A CN105967258A CN 105967258 A CN105967258 A CN 105967258A CN 201610351470 A CN201610351470 A CN 201610351470A CN 105967258 A CN105967258 A CN 105967258A
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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
- C02F1/14—Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
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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
- C02F1/08—Thin film evaporation
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/138—Water desalination using renewable energy
- Y02A20/142—Solar thermal; Photovoltaics
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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
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
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- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Sorption Type Refrigeration Machines (AREA)
Abstract
The invention discloses a solar energy and geothermal energy combined drive adsorption type seawater desalination system which comprises a hot water system, a cooling water system, a seawater supply device, a fresh water collection device, a strong brine collection device, a first adsorption-desorption device and a second adsorption-desorption device, wherein the seawater supply device comprises a seawater tank, and the seawater after degassing and pretreatment enters the seawater tank; a water outlet of a heat exchange pipe of the second adsorption-desorption device is communicated with a water inlet of a heat exchange pipe of the first adsorption-desorption device through a return heat water pipe; and a water outlet of the heat exchange pipe of the first adsorption-desorption device is communicated with a water inlet of the heat exchange pipe of the second adsorption-desorption device through a return heat water pipe. By adopting the method, 24-hour continuous operation of equipment can be realized, and relatively high efficiency is kept.
Description
Technical field
The present invention relates to field of sea water desalting technology, be specifically related to adsorption-type field of sea water desalting technology.
Background technology
Along with growth and the worsening shortages of water resource of population, desalinization causes the most attention of countries in the world.But, pass
Desalination technology infrastructure investment and the operating cost of system are the highest.At present, the most business-like desalination technology includes
Reverse osmosis, multistage flash evaporation and multi-effect distilling.Multi-stage flash evaporation technology and American-European countries that the West Asia countries such as Saudi Arabia use are wide
The system of unit water consumption of the reverse osmosis technology of general employing is all far above the energy consumption with surface water and groundwater as water source.Utilize tradition energy
Source carries out desalinization can consume substantial amounts of resource, increases the discharge of greenhouse gases.The emerging energies such as solar energy, wind energy and underground heat
Due to characteristics such as its renewable and green non-pollutions, it will be the developing direction that desalinization driving force is new.
Solar energy is utilized to carry out desalinization, mainly by heat effect and the photo effect of solar energy.Heat effect is to directly utilize too
Sun can carry out sea water by distillation as thermal source heating；Photo effect is to utilize solar electrical energy generation to drive seawater desalination process.Solar energy sea water
One distinct disadvantage of desalination system is that it provides heat energy input, if desalter needs even when can only have sunlight by day
Continuous uninterrupted operation, then need substantial amounts of thermal source deposit；The desalination technology that wind energy drives has in coastal high wind energy sector very well
Application prospect.But wind energy is the same with solar energy, it may have intermittent feature, it is difficult to support the lasting fortune of sea water desalting equipment
OK；Comparing solar energy and wind energy, the advantage of underground heat is can to provide the energy incessantly with 24 hours.The continuous firing of geothermal system
Depend on reasonably design.Solar energy is combined with underground heat, is possible not only to solve the energy reserves problem at night, the most favorably
Recovery in geothermal energy.
Bio-sil has a strongest affinity to steam, and can desorbing is adsorbed at relatively low temperature steam.Porous
Water vapor adsorption/desorption technique (adsorption desalination technology) that this feature of silica gel makes low-temperature heat source drive desalinizes seawater, and become can
Energy.Another advantage of adsorption desalination technology is owing to evaporating temperature is relatively low, reduces accordingly with the hydrogen halide of bittern evaporation,
Thus output water has higher purity.
In terms of adsorption-type desalinization research, document " new adsorption type solar desalination technology " proposes a kind of sun
Energy adsorption-type seawater desalination system, and describe single-action, the difference of many effect techniques, but not for commonly used single-action system
Measure in terms of increasing adsorption/desorption amount and improving efficiency of energy utilization is proposed.
Patent " a kind of solar energy sea water desalination apparatus and operational approach thereof " discloses a kind of solar energy sea water desalination apparatus and behaviour thereof
Making method, this device is based on adsorption air water-intaking equipment and saturated air humidification dehumidification formula solar energy distillation device, by heat sea
Water humidifying air, then by Mare Frigoris water dehumidification air, it is achieved saturated air produces fresh water in big temperature range, simultaneously by inhaling
Attached, desorption process, it is achieved cold air produces fresh water in little temperature range.But this kind of method utilizes air to carry out desalinization,
Efficiency is the lowest, and the prospect of large-scale promotion causes anxiety.
Patent " a kind of band backheat returns the adsorption-type solar sea water desalinating unit that matter circulates " discloses a kind of band backheat and returns matter circulation
Adsorption-type solar sea water desalinating unit, but owing to thermal source is only with solar energy, it is impossible to ensure that the continuous high-efficient of system runs,
Adaptability in different regions is poor.
Summary of the invention
It is an object of the invention to overcome the shortcoming of prior art, it is provided that a kind of by rational allocation solar energy with the use of geothermal energy,
Utilize low temperature regenerative resource to greatest extent, while putting forward high yield water efficiency, ensure the utilization that system can be run for continuous 24 hours
The adsorption-type seawater desalination system that solar energy and geothermal energy united drive.
The technical solution adopted in the present invention is:
The present invention utilizes solar energy and the adsorption-type seawater desalination system of geothermal energy united driving, and it includes hot-water heating system, described
Hot-water heating system include underground heat water supply well and underground heat back water well, watering cycle pipeline be sequentially connected with described underground heat water supply well, first
The level water inlet of vaporizer side of source pump, the outlet of vaporizer side of first order source pump and underground heat back water well are low
Warm water circulation pipeline is sequentially connected with the outlet of condenser side of described first order source pump, Low Temperature Thermal water tank and the first order
The water inlet of the condenser side of source pump, the water inlet of solar thermal collector, outlet are respectively by pipeline and described low temperature
First outlet and first water inlet of boiler are connected；The water inlet of the vaporizer side of second level source pump, outlet divide
It is not connected with the second outlet and second water inlet of described Low Temperature Thermal water tank by pipeline, the condensation of second level source pump
The water inlet of device side, outlet are connected with the first outlet and first water inlet of high-temperature hot water tank by pipeline respectively；It is also
Including:
Cooling water system, described cooling water system includes cooling water tank, and described cooling water tank is by equipped with cooling water water pump
Pipeline be connected with the water inlet of cooling tower；
Sea water water supply installation, described sea water water supply installation includes sea water tank, and sea water degassed, pretreated enters sea water tank,
Described sea water tank passes through the spray of the pipeline equipped with sea water water supply pipe valve and sea water feed pump and the shell side atop part of falling film evaporator
Shower device is connected；
Fresh water collecting device, described fresh water collecting device includes fresh water collecting case, and described fresh water collecting case is by equipped with fresh water
The tube side section bottom of the pipeline and falling film evaporator of collecting pipe valve exports and is connected, vacuum pump and the tube side part of falling film evaporator
Top is connected；
Strong brine collection device, described strong brine collection device includes that strong brine collecting box, described strong brine collecting box pass through
Export be connected equipped with the pipeline of strong brine collection pipe valve and the shell side section bottom of falling film evaporator；
First absorption-desorption device and the second absorption-desorption device, two absorption-desorption devices all include closed shell, described
Closed shell in be separately installed with absorption-desorption bed, described absorption-desorption bed includes silica gel and the heat exchange being coiled in silica gel
Pipe, the steam openings on the closed shell of two absorption-desorption devices is respectively by equipped with the first steam pipework automatic valve, the 5th steaming
The arm of vapor pipeline automatic valve is connected with the first jet chimney equipped with the 4th steam pipework automatic valve jointly, the first described steaming
The outlet in steam pipe road is connected with the tube side part of falling film evaporator, and the shell side part of described falling film evaporator passes through the second steam
Pipeline and a steam (vapor) outlet arm equipped with the second steam pipework automatic valve and equipped with another of the 3rd steam pipework automatic valve
Steam (vapor) outlet arm is connected, the outlet of two described steam (vapor) outlet arms respectively with an absorption-desorption device being correspondingly arranged
Closed shell on import be connected；After second outlet of high-temperature hot water tank connects hot-water circulating pump by hot water feeding pipe
Being divided into two-way, wherein a road is sequentially connected with the water inlet of heat exchanger tube of the 9th water lines automatic valve and the first absorption-desorption device,
Another road is sequentially connected with the water inlet of the heat exchanger tube of the second water lines automatic valve and the second absorption-desorption device；The water outlet of cooling tower
Mouthful being connected after cooling water circulation water pump by cooling water supply pipe is two-way, wherein a road be sequentially connected with the tenth water lines automatic valve with
And first water inlet of heat exchanger tube of absorption-desorption device, another road be sequentially connected with the first water lines automatic valve and the second absorption-
The water inlet of the heat exchanger tube of desorption apparatus；The water inlet of high-temperature hot water tank is divided into two-way after connecting hot water return pipe, and wherein a road depends on
The outlet of the heat exchanger tube of secondary connection the 8th water lines automatic valve and the first absorption-desorption device, another road is sequentially connected with the 3rd water
The outlet of the heat exchanger tube of pipeline automatic valve and the second absorption-desorption device；The water inlet of cooling water tank connects CWR
After be divided into two-way, wherein a road is sequentially connected with the water outlet of heat exchanger tube of the 7th water lines automatic valve and the first absorption-desorption device
Mouthful, another road is sequentially connected with the outlet of the heat exchanger tube of the 4th water lines automatic valve and the second absorption-desorption device；
The outlet of the heat exchanger tube of the second described absorption-desorption device is by being sequentially arranged with the 5th water lines automatic valve, backheat water tank
It is connected with the water inlet of the backheat water pipe of extraction cycle water pump and the heat exchanger tube of the first absorption-desorption device；The first described absorption
The outlet of the heat exchanger tube of-desorption apparatus passes through the backheat water lines equipped with the 6th water lines automatic valve and the second absorption-desorption device
The water inlet of heat exchanger tube be connected；
Described the first water lines automatic valve to the tenth water lines automatic valve, the first steam pipework automatic valve to the 5th steam pipework from
Dynamic valve is automatic valve and is connected with control system, described sea water water supply pipe valve, fresh water collecting pipe valve, strong brine collecting pipe
Valve is manually-operated gate or automatic valve, when described sea water water supply pipe valve, fresh water collecting pipe valve, strong brine collection pipe valve are certainly
During movable valve, described sea water water supply pipe valve, fresh water collecting pipe valve, strong brine are collected pipe valve and are connected with control system, above-mentioned
Each water pump and vacuum pump are all connected with control system.
The invention has the beneficial effects as follows: use solar energy and geothermal energy as the energy, have renewable, environment friendly and pollution-free feature；
By rational allocation solar energy and the use of geothermal energy, it is possible to achieve equipment runs for 24 hours continuously, keeps higher efficiency；Adopt
With water vapor adsorption/desorbing desalination technology, have that moving component is few, operating temperature is low compared to other desalination technology,
Primary energy consumes low feature, and beneficially the safe operation of equipment, saves energy and reduce the cost simultaneously；At adsorption-type desalination technology base
On plinth, use backheat to return matter circulation, by increasing capacitance it is possible to increase adsorption/desorption amount, improve efficiency of energy utilization, increase the fresh water of unit energy consumption
Yield.
Accompanying drawing explanation
Fig. 1 is the principle schematic of the adsorption-type seawater desalination system utilizing solar energy and geothermal energy united to drive of the present invention；
Fig. 2 is the principle schematic of the control system of the present invention.
Detailed description of the invention
With specific embodiment, the present invention is illustrated below in conjunction with the accompanying drawings.
The present invention as shown in Figure 1 utilizes solar energy and the adsorption-type seawater desalination system of geothermal energy united driving,
It includes:
Hot-water heating system, described hot-water heating system includes underground heat water supply well 2 and underground heat back water well 1, and watering cycle pipeline is sequentially connected with
Described underground heat water supply well, the water inlet of vaporizer side of first order source pump 3, the vaporizer side of first order source pump 3
Outlet and underground heat back water well, water at low temperature circulation line is sequentially connected with the condenser side of described first order source pump 3
The water inlet of the condenser side of outlet, Low Temperature Thermal water tank 5 and first order source pump 3, the water inlet of solar thermal collector 4
Mouth, outlet are connected with the first outlet and first water inlet of described Low Temperature Thermal water tank 5 by pipeline respectively；The second level
The water inlet of the vaporizer side of source pump 6, outlet are respectively by the second outlet of pipeline with described Low Temperature Thermal water tank 5
Being connected with the second water inlet, the water inlet of the condenser side of second level source pump 6, outlet are respectively by pipeline and high temperature
First outlet and first water inlet of boiler 51 are connected,
Cooling water system, described cooling water system includes cooling water tank 50, and described cooling water tank is by equipped with cooling water water
The pipeline of pump 49 is connected with the water inlet of cooling tower 47；
Sea water water supply installation, described sea water water supply installation includes sea water tank 32, and sea water degassed, pretreated enters sea water
Case 32, described sea water tank 32 passes through the pipeline equipped with sea water water supply pipe valve 33 and sea water feed pump 34 and falling film evaporator 30
The spray equipment of shell side atop part be connected；Described falling film evaporator 30 is evaporation-condensation device, and described falling liquid film steams
The shell side part sending out device 30 plays vaporizer effect, and tube side part plays condenser effect, and described falling film evaporator 30 can use phase
The vaporizer of same-action, condenser, heat exchange coil etc. replace；
Fresh water collecting device, described fresh water collecting device includes fresh water collecting case 36, and described fresh water collecting case 36 is by dress
Have the pipeline of fresh water collecting pipe valve to export with the tube side section bottom of falling film evaporator 30 to be connected, vacuum pump 26 and falling film evaporation
The tube side atop part of device 30 is connected；Described vacuum pump 26 is connected to form with the tube side atop part of falling film evaporator 30
Incoagulable gas tapping equipment；
Strong brine collection device, described strong brine collection device includes strong brine collecting box 38, described strong brine collecting box 38
The shell side section bottom of pipeline with falling film evaporator 30 by collecting pipe valve 39 equipped with strong brine exports and is connected；
First absorption-desorption device and the second absorption-desorption device, two absorption-desorption devices all include closed shell, such as figure point
It is not the closed shell 46 of closed shell 27, second absorption-desorption device of the first absorption-desorption device, at described closed housing
The internal absorption-desorption bed that is provided with, the absorption-desorption bed 28 of the respectively first absorption-desorption device, the second absorption-desorption device
Absorption-desorption bed 45, described absorption-desorption bed includes silica gel and the heat exchanger tube being coiled in silica gel, the respectively first absorption
The heat exchanger tube 29 of-desorption apparatus, the heat exchanger tube 44 of the second absorption-desorption device, on the closed shell of two absorption-desorption devices
Steam openings respectively by common with dress equipped with the arm of the first steam pipework automatic valve the 24, the 5th steam pipework automatic valve 43
The first jet chimney 40 having the 4th steam pipework automatic valve 42 is connected, the outlet of the first described jet chimney 40 and falling liquid film
The tube side part of vaporizer 30 is connected, the shell side part of described falling film evaporator 30 by the second jet chimney 25 with equipped with
One steam (vapor) outlet arm of the second steam pipework automatic valve 31 and another steam equipped with the 3rd steam pipework automatic valve 41
Outlet stool is connected, the outlet of two described steam (vapor) outlet arms close with an absorption-desorption device being correspondingly arranged respectively
Import on closed shell body is connected；
Second outlet of high-temperature hot water tank 51 is divided into two-way, wherein after connecting hot-water circulating pump 52 by hot water feeding pipe 8
One tunnel is sequentially connected with the water inlet of the heat exchanger tube of the 9th water lines automatic valve 22 and the first absorption-desorption device, and another road is successively
Connect the water inlet of the heat exchanger tube of the second water lines automatic valve 12 and the second absorption-desorption device；The outlet of cooling tower passes through
Cooling water supply pipe 7 is two-way after connecting cooling water circulation water pump 48, and wherein a road is sequentially connected with the tenth water lines automatic valve 23
And first water inlet of heat exchanger tube of absorption-desorption device, another road is sequentially connected with the first water lines automatic valve 11 and second
The water inlet of the heat exchanger tube of absorption-desorption device；The water inlet of high-temperature hot water tank is divided into two-way, wherein after connecting hot water return pipe 9
One tunnel is sequentially connected with the outlet of the heat exchanger tube of the 8th water lines automatic valve 21 and the first absorption-desorption device, and another road is successively
Connect the outlet of the heat exchanger tube of the 3rd water lines automatic valve 13 and the second absorption-desorption device；The water inlet of cooling water tank is even
Being divided into two-way after connecing CWR 10, wherein a road is sequentially connected with the 7th water lines automatic valve 20 and the first absorption-desorption
The outlet of the heat exchanger tube of device, another road is sequentially connected with changing of the 4th water lines automatic valve 14 and the second absorption-desorption device
The outlet of heat pipe；
The outlet of the heat exchanger tube 44 of the second described absorption-desorption device is by being sequentially arranged with the 5th water lines automatic valve 15, returning
Boiler 17 is connected with the water inlet of the heat exchanger tube of the first absorption-desorption device with the backheat water pipe 16 of extraction cycle water pump 18；
The outlet of the heat exchanger tube 29 of the first described absorption-desorption device is by the backheat water lines equipped with the 6th water lines automatic valve 19
Being connected with the water inlet of the heat exchanger tube of the second absorption-desorption device, backheat water tank contributes to the system during stable extraction cycle
Pressure oscillation；Described backheat water tank 17 is arranged in backheat water lines 16, constitutes back hot-water heating system.
Described Low Temperature Thermal water tank 5 includes but not limited to common water tank, the water tank etc. that will separate for backwater with high-temperature hot water tank 51；
The shell side part of falling film evaporator 30 plays vaporizer effect, and tube side part plays condenser effect；
Falling film evaporator 30 can replace with the vaporizer of phase same-action, condenser, heat exchange coil etc.；
First water lines automatic valve the 11, second water lines automatic valve the 12, the 3rd water lines automatic valve the 13, the 4th water lines is automatic
Valve the 14, the 5th water lines automatic valve the 15, the 6th water lines automatic valve the 19, the 7th water lines automatic valve the 20, the 8th water lines is certainly
Dynamic valve the 21, the 9th water lines automatic valve the 22, the tenth water lines automatic valve the 23, first steam pipework automatic valve the 24, second steam
Pipeline automatic valve the 31, the 3rd steam pipework automatic valve the 41, the 4th steam pipework automatic valve the 42, the 5th steam pipework automatic valve 43
Being connected for automatic valve and with control system, pipe valve 39 collected by sea water water supply pipe valve 33, fresh water collecting pipe valve 37, strong brine
Manually-operated gate can be used, it is possible to use automatic valve and be connected with control system.
Each water pump (extraction cycle water pump 18, sea water feed pump 34, cooling tower water supply pump 49, cooling water circulation water pump 48,
Hot-water circulating pump 52) and vacuum pump 26 be all connected with control system.
First absorption-desorption bed the used adsorbing material of the 28, second absorption-desorption bed 45 is silica gel.
Preferably on the closed shell 46 of closed shell 27, the second absorption-desorption bed of the first described absorption-desorption bed,
On falling film evaporator 30, hot water feeding pipe 8, hot water return pipe 9, backheat water pipe the 16, second jet chimney the 25, first steam
Pipeline 40 and the pipeline of heat source system, be all coated with insulation material.
The work process of present system is as follows:
When sunny daytime, the solar thermal collector 4 being connected with described Low Temperature Thermal water tank 5 (about 40 DEG C) works.According to too
Sun radiant intensity situation, if described solar thermal collector 4 is produced the low-temperature water heating of about 40 DEG C, by second level source pump
After 6,80 DEG C of hot water amounts of generation disclosure satisfy that driving first absorption-desorption bed the 28, second absorption-desorption bed 45 desorbing operating mode
Required hot water amount, then underground heat water supply well 2, underground heat back water well 1 and described first order source pump 3 are not run, described too
Sun energy heat collector 4 duty obtains the hot water of about 40 DEG C；If described solar thermal collector 4 is produced the low-temperature water heating of about 40 DEG C,
After second level source pump 6,80 DEG C of hot water amounts of generation can not meet driving the first absorption-desorption bed 28, second and inhale
Hot water amount needed for attached-desorbing bed 45 desorbing operating mode, then described underground heat water supply well 2, underground heat back water well 1 and the described first order
Source pump 3 is opened and is run, and obtains the hot water of about 40 DEG C to Low Temperature Thermal water tank with described solar thermal collector 4 duty simultaneously
In 5.At night and overcast and rainy time, described underground heat water supply well 2, underground heat back water well 1 and described first order source pump 3 are transported
OK, in the Low Temperature Thermal water tank 5 that the hot water of prepared about 40 DEG C is the most described.About 40 DEG C hot water in described Low Temperature Thermal water tank 5
The vaporizer side of described second level source pump 6 it is delivered to by circulation line, through described second level source pump 6, will
After condenser side hot water is warming up to 80 DEG C, it is delivered to described high-temperature hot water tank 51 by circulation line.Described high-temperature hot water tank
Hot water (about 80 DEG C) in 51, through hot water circulating pipeline, changing of the first absorption-desorption bed 28 being delivered under desorption state
In heat pipe 29, in the heat exchanger tube 44 of the second absorption-desorption bed 45, the adsorbent in heating desorption bed makes steam be desorbed, with
Drive system is run.
When a complete adsorption-desorption cycle starts, the first absorption-desorption bed 28 is in absorption saturation, the second absorption
-desorbing bed 45 is in desorbing completion status；The first, the 4th steam pipework automatic valve 24,42 is opened, and the 5th steam pipework is automatic
Valve 43 cuts out, and closed shell 27 is connected with the tube side of falling film evaporator 30, the nine, the 8th water lines automatic valves 22,21
Opening, the ten, the 7th water lines automatic valves 23,20 are closed, and the hot water in high-temperature hot water tank 51 enters through hot water feeding pipe 8
Heat exchanger tube 29, with the first absorption-desorption bed 28 heat exchange, now the first absorption-desorption bed 28 starts desorbing, the water desorbed
Steam enters inside the heat exchanger tube of falling film evaporator 30 due to differential pressure action；Meanwhile, in sea water tank 32, process deaerates, in advance
The sea water processed is transported into the shell side part of falling film evaporator 30, forms water droplet through spray equipment, is sprayed at falling film evaporator
On the heat exchanger tube outer wall of 30, in the moisture absorption heat exchanger tube in sea water water vapour the heat of condensation and at the outer vaporization of heat exchanger tube, dense
Saline by discharge of pipes to strong brine collecting box 38, through sea water feed pump 34 after a part of strong brine and the sea water mixing supplemented
It is again introduced into falling film evaporator evaporation；Now the 3rd steam pipework automatic valve 41 is opened, and the second steam pipework automatic valve 31 is closed,
The shell side of falling film evaporator 30 is connected with closed shell 46, and the first, the 4th water lines automatic valve 11,14 is opened, second,
3rd water lines automatic valve 12,13 is closed, and the cooling water cooled water feed pipe 7 that cooling tower 47 produces enters heat exchanger tube 44,
With the second absorption-desorption bed 45 heat exchange, now the second absorption-desorption bed 45 starts absorption, and the steam of heat enters closed shell
It is adsorbed by adsorbent after 46 and gradually cools down, under steam pressure difference drives, the water in sea water outside falling film evaporator 30 heat exchanger tube
Divide and evaporate into closed shell 46 continuously and be adsorbed；The steam that first absorption-desorption bed 28 desorbs is at falling liquid film
Condense under the cooling of the outer Mare Frigoris water of the heat exchanger tube of vaporizer 30, enter fresh water collecting case 36, it is achieved desalinization；
When the desorption process of described first absorption-desorption bed 28 and the adsorption process of described second absorption-desorption bed 45 close on end
Time, first, second, third, fourth, the seven, the eight, the nine, the tenth water lines automatic valves 11,12,13,14,20,
21,22,23 close, stop hot water and cooling water circulation, second, third, the 4th steam pipework automatic valve 31,41,42
Closing, the five, the first steam pipework automatic valves 43,24 are opened, and closed shell 27 is connected with closed shell 46, closed housing
Water vapour in body 27 can flow to rapidly in closed shell 46 under bigger differential pressure action, the first absorption-desorption bed 28 desorbing
The water vapour gone out flows into the second absorption-desorption bed 45, is adsorbed by adsorbent, thus realizes the secondary of the first absorption-desorption bed 28
Desorption process and the second adsorption process of the second absorption-desorption bed 45, described second adsorption-desorption process is referred to as back matter circulation
Process, returning matter circulation can increase circulation absorption amount and the desorption quantity of absorption-desorption bed；
When the pressure of closed shell 27 and closed shell 46 is close to balance, the three, the first steam pipework automatic valves 41,24 close
Closing, second, the five, the 4th steam pipework automatic valves 31,43,42 are opened, and return matter cyclic process and terminate；Five, the 6th water
Pipeline automatic valve 15,19 is opened, and extraction cycle water pump 18 starts, and the hot water in heat exchanger tube 29 enters heat exchanger tube 44, and changes
Cooling water in heat pipe 44 enters heat exchanger tube 29 after backheat water tank 17, it is achieved the first absorption-desorption bed 28 and the second absorption
Extraction cycle process between-desorbing bed 45, the sensible heat of the first absorption-desorption bed 28 being in high temperature is mainly led to by its effect
Cross extraction cycle water and take to be in the second absorption-desorption bed 45 of low temperature, thus reclaimed the sensible heat of a part, also eliminate
The thermal loss that brings because of cold water resident in heat exchanger tube 44 during the next one and because of hot water resident in heat exchanger tube 29 bring cold
Amount loss, it is possible to save a part of hot water and cooling water amount, improves the energy utilization efficiency of system, and this process can be regarded as
It is to try to utilize sensible heat to the pre-cooling of the first absorption-desorption bed 28 and the preheating to the second absorption-desorption bed 45；
When the water temperature in backheat water tank is basicly stable, extraction cycle water pump 18 is out of service, the five, the 6th water lines automatic valves
15,19 closing, extraction cycle process terminates；Now second, third, the ten, the 7th automatic valve 12,13,23,20 dozens
Opening, first, the four, the nine, the 8th automatic valves 11,14,22,21 are closed, and the recirculated water in heat exchanger tube 44 transfers hot water to,
Recirculated water in heat exchanger tube 29 transfers cold water to, and the second absorption-desorption bed 45 starts desorption process, and the first absorption-desorption bed 28 is opened
Beginning adsorption process；
Until next time matter cyclic process and extraction cycle process terminate, this is a complete adsorption-desorption cycle.
And then, repeat above-mentioned absorption-desorption, Hui Zhi, heat recovery process, start next adsorption-desorption cycle.
By rational allocation solar energy and the use of geothermal energy, adsorption-desorption cycle is the most uninterruptedly carried out, it is achieved system 24 is little
Shi Lianxu runs.
According to the accumulation situation of incoagulable gas in system, when in system, incoagulable gas is accumulated to a certain extent, vacuum pump 26
Open and run, the incoagulable gas accumulated in extracting system out.
Claims (2)
1. utilizing the adsorption-type seawater desalination system that solar energy and geothermal energy united drive, it includes hot-water heating system, described
Hot-water heating system includes underground heat water supply well and underground heat back water well, watering cycle pipeline be sequentially connected with described underground heat water supply well, first
The level water inlet of vaporizer side of source pump, the outlet of vaporizer side of first order source pump and underground heat back water well,
Water at low temperature circulation line is sequentially connected with the outlet of condenser side of described first order source pump, Low Temperature Thermal water tank and
The water inlet of the condenser side of one-level source pump, the water inlet of solar thermal collector, outlet pass through pipeline respectively with described
The first outlet of Low Temperature Thermal water tank and the first water inlet be connected；The water inlet of the vaporizer side of second level source pump,
Outlet is connected with the second outlet and second water inlet of described Low Temperature Thermal water tank by pipeline respectively, second level heat pump
The water inlet of the condenser side of unit, outlet are respectively by pipeline and the first outlet of high-temperature hot water tank and the first water inlet
It is connected, it is characterised in that it also includes:
Cooling water system, described cooling water system includes cooling water tank, and described cooling water tank is by equipped with cooling water
The pipeline of water pump is connected with the water inlet of cooling tower；
Sea water water supply installation, described sea water water supply installation includes sea water tank, and sea water degassed, pretreated enters sea water
Case, described sea water tank passes through the shell side part top of the pipeline equipped with sea water water supply pipe valve and sea water feed pump and falling film evaporator
The spray equipment in portion is connected；
Fresh water collecting device, described fresh water collecting device includes fresh water collecting case, and described fresh water collecting case is by equipped with light
The pipeline of water collection pipe valve exports with the tube side section bottom of falling film evaporator and is connected, vacuum pump and the tube side of falling film evaporator
Atop part is connected；
Strong brine collection device, described strong brine collection device includes strong brine collecting box, and described strong brine collecting box leads to
The shell side section bottom outlet crossing the pipeline equipped with strong brine collection pipe valve and falling film evaporator is connected；
First absorption-desorption device and the second absorption-desorption device, two absorption-desorption devices all include closed shell,
Being separately installed with absorption-desorption bed in described closed shell, described absorption-desorption bed includes silica gel and is coiled in silica gel
Heat exchanger tube, the steam openings on the closed shell of two absorption-desorption devices respectively by equipped with the first steam pipework automatic
Valve, the arm of the 5th steam pipework automatic valve are connected with the first jet chimney equipped with the 4th steam pipework automatic valve jointly,
The outlet of the first described jet chimney is connected with the tube side part of falling film evaporator, the shell side portion of described falling film evaporator
Divide by the second jet chimney and equipped with a steam (vapor) outlet arm of the second steam pipework automatic valve and equipped with the 3rd steam
Another steam (vapor) outlet arm of pipeline automatic valve is connected, and the outlet of two described steam (vapor) outlet arms is right with one respectively
Import on the closed shell of the absorption-desorption device that should arrange is connected；Second outlet of high-temperature hot water tank passes through hot water
Feed pipe is divided into two-way after connecting hot-water circulating pump, and wherein a road is sequentially connected with the 9th water lines automatic valve and the first absorption
The water inlet of the heat exchanger tube of-desorption apparatus, another road is sequentially connected with the second water lines automatic valve and the second absorption-desorption device
The water inlet of heat exchanger tube；The outlet of cooling tower is two-way after connecting cooling water circulation water pump by cooling water supply pipe, its
In a road be sequentially connected with the water inlet of heat exchanger tube of the tenth water lines automatic valve and the first absorption-desorption device, another road depends on
The water inlet of the heat exchanger tube of secondary connection the first water lines automatic valve and the second absorption-desorption device；The water inlet of high-temperature hot water tank
Mouth is divided into two-way after connecting hot water return pipe, and wherein a road is sequentially connected with the 8th water lines automatic valve and the first absorption-desorption
The outlet of the heat exchanger tube of device, another road is sequentially connected with changing of the 3rd water lines automatic valve and the second absorption-desorption device
The outlet of heat pipe；The water inlet of cooling water tank is divided into two-way after connecting CWR, and wherein a road is sequentially connected with the 7th
The outlet of the heat exchanger tube of water lines automatic valve and the first absorption-desorption device, another road is sequentially connected with the 4th water lines certainly
The outlet of the heat exchanger tube of dynamic valve and the second absorption-desorption device；
The outlet of the heat exchanger tube of the second described absorption-desorption device is by being sequentially arranged with the 5th water lines automatic valve, backheat
The water inlet of the backheat water pipe of water tank and extraction cycle water pump and the heat exchanger tube of the first absorption-desorption device is connected；Described
The outlet of the heat exchanger tube of the first absorption-desorption device is inhaled with second by the backheat water lines equipped with the 6th water lines automatic valve
The water inlet of the heat exchanger tube of attached-desorption apparatus is connected；
Described the first water lines automatic valve to the tenth water lines automatic valve, the first steam pipework automatic valve are to the 5th steam pipework
Automatic valve is automatic valve and is connected with control system, and described sea water water supply pipe valve, fresh water collecting pipe valve, strong brine are received
Integrate pipe valve as manually-operated gate or automatic valve, when described sea water water supply pipe valve, fresh water collecting pipe valve, strong brine collecting pipe
When valve is automatic valve, described sea water water supply pipe valve, fresh water collecting pipe valve, strong brine are collected pipe valve and are connected with control system
Connecing, above-mentioned each water pump and vacuum pump are all connected with control system.
The adsorption-type seawater desalination system utilizing solar energy and geothermal energy united to drive the most according to claim 1, its
It is characterised by: on the closed shell of the first described absorption-desorption bed, on the closed shell of the second absorption-desorption bed, fall
On film evaporator, hot water feeding pipe, hot water return pipe, backheat water pipe, the second jet chimney, the first jet chimney and heat
The pipeline of origin system is all coated with insulation material.
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| CN201610351470.1A CN105967258A (en) | 2016-05-24 | 2016-05-24 | Solar energy and geothermal energy combined drive adsorption type seawater desalination system |
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| CN201610351470.1A CN105967258A (en) | 2016-05-24 | 2016-05-24 | Solar energy and geothermal energy combined drive adsorption type seawater desalination system |
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| CN106966452A (en) * | 2017-04-18 | 2017-07-21 | 天津大学 | The desalinization operating method of matter circulation absorption bed is returned with backheat |
| CN108285184A (en) * | 2018-03-29 | 2018-07-17 | 天津大学 | A kind of absorption type seawater desalination system with higher stability |
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Application publication date: 20160928 |