WO2021033935A1 - 다중효용증발장치를 이용한 흡착식 해수담수화 시스템 - Google Patents
다중효용증발장치를 이용한 흡착식 해수담수화 시스템 Download PDFInfo
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- WO2021033935A1 WO2021033935A1 PCT/KR2020/009872 KR2020009872W WO2021033935A1 WO 2021033935 A1 WO2021033935 A1 WO 2021033935A1 KR 2020009872 W KR2020009872 W KR 2020009872W WO 2021033935 A1 WO2021033935 A1 WO 2021033935A1
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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
- C02F1/043—Details
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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
- C02F1/06—Flash evaporation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/26—Multiple-effect evaporating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
- B01D1/305—Demister (vapour-liquid separation)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D5/00—Condensation of vapours; Recovering volatile solvents by condensation
- B01D5/0057—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
- B01D5/006—Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/26—Drying gases or vapours
- B01D53/261—Drying gases or vapours by adsorption
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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
- C02F1/008—Control or steering systems not provided for elsewhere in subclass C02F
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
-
- 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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/004—Seals, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/002—Construction details of the apparatus
- C02F2201/005—Valves
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
Definitions
- the present invention relates to an adsorption-type seawater desalination system for desalination of seawater, and more specifically, an adsorption type using a multi-effect evaporation device capable of maximizing freshwater production from seawater and additionally producing cold water for local and residential cooling. It relates to a seawater desalination system.
- the adsorption-type seawater desalination system evaporates and separates water from seawater through an evaporator, then adsorbs water vapor to the surface of silica gel in the adsorption process, desorbs water vapor from the surface of silica gel in the desorption process, and then removes the desorbed water vapor. It is a system that recovers fresh water by supplying it to a condenser and condensing it into a liquid state.
- the adsorption-type seawater desalination system requires cooling water to cool heat generated during adsorption in adsorbing water vapor to silica gel in the adsorption process, and hot water is required to desorb water vapor from silica gel in the desorption process.
- the conventional AD (adsorption desalination) system is equipped with a heat exchange tube 4 equipped with a hydrophilic adsorbent 3 in the adsorption and desorption bed, and the evaporator and condenser are the adsorption and desorption bed and steam line. It is connected through (5,6).
- the seawater degassed from the degassing tank 15 is supplied through a pipe 14 to a falling-film evaporator 11 equipped with a nozzle-type seawater distributor, and the seawater passes through the pipe 12. Cycle through.
- the evaporator 11 is connected to the adsorption bed 2 used in the adsorption process through the operation of a valve installed in the steam line 5, and the adsorbent in the adsorption bed 2 adsorbs water vapor evaporated from seawater in the evaporator. .
- the driving force of the adsorbent for water vapor adsorption is due to physisorption based on van der Waals force and weak electrostatic force.
- cold water 13 is produced from the evaporator due to the latent heat of evaporation of seawater, which can be used for residential or local cooling.
- heat generated when the adsorbent absorbs water vapor is removed by the cooling water 9 supplied to the heat exchange tube in the adsorption bed.
- the desorption bed (1) used in the desorption process is connected to the condenser (7) through a valve installed in the steam line (6), and hot water (8) is supplied to the heat exchange tube in the desorption bed.
- the water vapor adsorbed on the adsorbent is desorbed.
- the desorbed water vapor moves to a condenser to which cooling water is supplied and is condensed, and the produced fresh water is stored in the storage tank 10.
- the adsorption and desorption beds (2,1) mentioned above are alternately desorption and adsorption processes after a predetermined period of time (half cycle) and a switching time for preheating and precooling, respectively. It is switched on the way, thereby completing one cycle of the conventional AD system.
- the above conventional AD system has a disadvantage of low freshwater production and efficiency because it is composed of one evaporator and a pair of adsorption and desorption beds and is based on the mass of the adsorbent used and the physical properties of the adsorbent.
- the present invention provides a multi-effect evaporator for producing and providing high-temperature steam and low-temperature steam through a first evaporator and a second evaporator including a plurality of continuous evaporators, It is a configuration that includes an AD system with three adsorption and desorption beds, and it can complement the coefficient of performance (COP) and maximize freshwater production, and additionally through each of the first and second evaporators. It is an object of the present invention to provide an adsorption-type seawater desalination system using a multi-effect evaporation system that can utilize cold water produced as a water for district cooling and residential cooling.
- COP coefficient of performance
- the adsorption-type seawater desalination system using a multi-effect evaporation apparatus includes a multi-effect evaporation apparatus 100 for producing high-temperature steam and low-temperature steam, and a high-temperature steam or low-temperature steam produced by the multi-effect evaporation apparatus 100.
- a valve control unit for controlling the operation of the valve is included.
- the reaction unit 200 is composed of bed A (200a), bed B (200b) and bed C (200c) each including the adsorbent 220 and heat exchange tube 210, the bed A, bed B and Bed C is selectively supplied with high-temperature steam or low-temperature steam generated in the multi-effect evaporation device 100 through the control of the valve control unit, respectively, and a low-temperature adsorption process by selectively supplying cooling water or hot water through the cold/hot water line,
- the high temperature adsorption process, the preheating process, the desorption process, and the precooling process may be sequentially performed.
- any one of the beds A, B, and C When any one of the beds A, B, and C performs a low temperature adsorption process, the other may perform a high temperature adsorption process, and the other may perform a desorption process.
- the multi-effect evaporator 100 includes a first evaporator 110 including a plurality of continuous evaporators and a high-pressure evaporator 130a for discharging high-temperature steam, and a low-pressure evaporator for discharging a plurality of continuous evaporators and final low-temperature steam. It may include a second evaporation unit 120 including (130b).
- the first evaporation unit 110 and the second evaporation unit 120 are connected to each other, and from the evaporator A1 of the first evaporation unit 110 to the low pressure evaporator 130b of the second evaporation unit 120
- the condensed water generated in can move sequentially to produce fresh water.
- the evaporator 130 is provided on a heat dissipation tube body 132 accommodating a gas, a spray nozzle 133 for spraying seawater on the surface of the heat dissipation tube 132 and an upper portion of the spray nozzle 133, and evaporation of seawater It may include a demister 134 separating the droplets from the water vapor according to the spray nozzle 133, a heat dissipation tube body 132, and a housing 131 accommodating the demister 134.
- COP coefficient of performance
- freshwater production and district cooling and residence additionally produced cooling water through a multi-effect evaporator. It can be used as water for residual cooling, and condensed water generated by latent heat exchange between seawater and steam through a multi-effect method can be additionally used as fresh water.
- FIG. 1 is a block diagram showing a conventional adsorption type seawater desalination system.
- Figure 2 is a table of operation logic applied to the existing adsorption type seawater desalination system.
- FIG. 3 is a block diagram showing an adsorption-type seawater desalination system using a multi-effect evaporation device according to the present invention.
- Figure 4 is a table showing a detailed process of the adsorption-type seawater desalination system using the multi-effect evaporation device according to the present invention.
- 5 to 10 are operational state diagrams for each detailed process of the adsorption type seawater desalination system using the multi-effect evaporation device according to the present invention.
- FIG. 11 is a table showing the operation sequence of bed A, bed B, and bed C through the operation logic applied to the adsorption-type seawater desalination system using the multi-effect evaporation device according to the present invention.
- FIG. 12 is a graph showing the performance of the adsorption-type seawater desalination system using the multi-effect evaporation device according to the present invention.
- the existing adsorption desalination system (adsorption desalination; hereinafter,'AD system') alternately performs adsorption and desorption of the evaporator that generates water vapor by evaporating seawater, and the water vapor delivered from the evaporator to the adsorbent. It has two reaction units, a cold/hot water line for selectively supplying cooling water and hot water for adsorption or desorption to the reaction unit, and a condenser to provide fresh water by condensing water vapor discharged from the reaction unit.
- the adsorption type seawater desalination system using a multi-effect evaporation device is a multiplex system capable of simultaneously providing high-temperature steam and low-temperature steam instead of an evaporator in the existing AD system, as shown in FIGS. 3 to 11. It is characterized in that the utility evaporation device 100 is applied and three or more reaction units 200 are applied.
- High-temperature steam and low-temperature steam can be selectively supplied through the multi-effect evaporation device 100, and local and residential cooling can be performed by a multiple effect method (Multiple Effect Distillation).
- the desalination performance can be improved by implementing the effective equilibrium adsorption amount of the adsorbent and the optimum cycle for the desorption process through the 2-evaporator and 3-bed AD process of the multi-effect evaporator.
- FIG. 3 is a block diagram showing an adsorption-type seawater desalination system using a multiple-effect evaporation device according to an embodiment of the present invention
- FIG. 4 is a diagram illustrating each step of an adsorption-type seawater desalination process using a multiple-effect evaporation device according to an embodiment of the present invention. Is shown.
- the multi-effect evaporation apparatus 100 may include a first evaporation unit 110 and a second evaporation unit 120 each having a plurality of evaporators 130. Each of the first evaporation unit 110 and the second evaporation unit 120 may evaporate supplied seawater to generate high-temperature steam and low-temperature steam.
- the multiple-effect evaporation apparatus 100 includes a first evaporation unit 110 and a second evaporation unit 120 each having a plurality of evaporation units as described above.
- the water vapor generated by the first evaporation unit 110 may be higher temperature and high pressure water vapor than the water vapor generated by the second evaporation unit 120.
- the first evaporator 110 may include a continuous evaporator A1 to an evaporator AN, and may discharge high temperature and high pressure water vapor.
- the second evaporator 120 may include continuous evaporators B1 to BN, and may discharge water vapor having a relatively low temperature and low pressure compared to the evaporators A1 to AN of the first evaporator 110.
- the first evaporation unit 110 and the second evaporation unit 120 may be connected to each other.
- the first evaporation unit 110 is provided with steam for the first time to the evaporator A1 through a combined heat and power compressor (TVC; Thermo-Vapor Compressor), and generated by latent heat exchange with seawater supplied and injected to each evaporator 130.
- TVC combined heat and power compressor
- the final high-temperature steam is produced by a multiple-effect method that is sequentially provided to the evaporator AN, and supplied to the above-described reaction part 200 through the high-temperature steam line 111.
- the hot water vapor can be sent back to the TVC.
- the second evaporator 120 is provided with steam for the first time to the evaporator B1 through TVC, and uses the seawater supplied and injected to each evaporator 130 and the water vapor generated by latent heat exchange as a heat source for the next evaporator 130.
- the final low-temperature steam is produced by a multiple-effect method sequentially provided to the evaporator BN, and is supplied to the reaction unit 200 through the low-temperature steam line 121, and the excess high-temperature steam can be sent back to the TVC.
- Each of the evaporators 130 is provided on a heat dissipation tube body 132 for receiving water vapor, a spray nozzle 133 for spraying seawater on the surface of the heat dissipation tube 132, and on the top of the spray nozzle 133 Including a demister 134 that separates droplets from water vapor generated by latent heat evaporation caused by contact with seawater on the surface of 132, the spray nozzle 133, a heat dissipation tube body 132 and a demister 134
- it may include a housing 131 for accommodating seawater sprayed to the spray nozzle 133.
- Fresh water may be produced by sequentially collecting the condensed water generated inside the radiating tube 132 from the evaporator A1 to the evaporator Bn through latent heat exchange according to the contact of seawater on the surface of the radiating tube 132.
- reaction unit 200 and the condenser 300 of the present invention will be described in more detail.
- the reaction unit 200 includes an adsorbent (220 in FIGS. 5 to 10) for adsorption or desorption by receiving high-temperature steam or low-temperature steam produced in the multi-effect evaporation device 100, and the reaction A heat exchange tube through which cold or hot water moves so that heat generated when the adsorbent 220 absorbs moisture from the unit 200 and supplies heat to the reaction unit 200 during desorption (210 of FIGS. 5 to 10) ), including bed A (200a), bed B (200b), bed C (200c) may be configured respectively.
- the number of beds is illustrative and is not necessarily limited to three, and four or more beds may be applied according to embodiments.
- the reaction unit 200 may be divided into bed A (200a), bed B (200b) and bed C (200c), and each bed 200a, 200b, and
- the high-temperature steam and low-temperature steam generated by the multi-effect evaporation device 100 and cooling water and hot water provided through the cold/hot water line 400 can be selectively supplied to 200c), and low temperature adsorption, high temperature adsorption, preheating, desorption, precooling
- Each process can be carried out organically.
- the valve control unit (not shown) includes valves provided in the steam line connecting the multi-effect evaporation device 100 and the reaction unit 200, the reaction unit 200 and the condenser 300, respectively, and the cold/hot water line 400 ), the operation (opening and closing) of a valve for selectively supplying cooling water and hot water provided to the heat exchange tube 210 of the reaction unit 200 may be controlled.
- the condenser 300 receives and condenses the water vapor desorbed from the adsorbent 220 of the reaction unit 200, and the condensed water is recovered as fresh water and stored in a freshwater storage tank 310 or used as industrial water or household water. have.
- a discharge line 230 may be connected to supply water vapor discharged from the reaction unit 200 to the condenser 300.
- the cold and hot water line 400 may selectively supply cooling water and hot water to the heat exchange tube 210 of the reaction unit 200.
- the high-temperature steam line 111 of the first evaporation unit 110 and the low-temperature steam line 121 of the second evaporation unit 120 are connected to each of the reaction units 200 through the final inlet pipe 140. I can.
- the adsorption-type seawater desalination system using a multi-effect evaporation device can desalize seawater through a detailed process of six steps. Hereinafter, each detailed process will be described in more detail together with the drawings.
- the adsorption-type seawater desalination using a multi-effect evaporation device consists of detailed processes of cycle #1, replacement #1, cycle #2, replacement #2, cycle #3, and replacement #3.
- the adsorption-type seawater desalination system using the multi-effect evaporation device according to an embodiment of the present invention can desalize seawater by repeatedly performing the above-described six detailed processes.
- valve 4 is a summary of a process performed by each of bed A, bed B, and bed C in each detailed process and the opening and closing state of the valve.
- the valve is controlled by the valve control unit so that beds A to C in each detailed process can be opened and closed to perform any one of a high pressure adsorption process, a low pressure adsorption process, a desorption process, a preheating process, and a precooling process.
- Bed A can perform a low-temperature adsorption process
- Bed B can perform a high-temperature adsorption process
- Bed C can perform a desorption process.
- Process Bed C performs a precooling process, in the case of Cycle #2, Bed A performs a high temperature adsorption process, Bed B performs a desorption process, Bed C performs a low temperature adsorption process, and in case of Replacement #2, Bed A performs a preheating process, Bed B performs a pre-cooling process, Bed C performs a low temperature adsorption process, in the case of Cycle #3
- Bed A performs a desorption process
- Bed B performs a low temperature adsorption process
- Bed C performs a high temperature adsorption process.
- Bed A may perform a precooling process
- Bed B may perform a low temperature adsorption process
- Bed C may perform a preheating process.
- detailed processes of Cycle #1-Replacement #1-Cycle #2-Replacement #2-Cycle #3-Replacement #3 may be sequentially repeated.
- valve (GV-01) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is closed, and the second evaporation unit
- the valve (GV-02) of the low-temperature steam line 121 connected to 120 is opened, and the valve (GV-07) of the discharge line 230 connected to the condenser 300 is closed to accommodate low-temperature steam
- Valves (AV-02) and valves (AV-04) of the hot and cold water line 400 are opened by the valve control unit, and valves (AV-01) and valves (AV-03) are closed to transfer cooling water to the heat exchange tube 210 ), and the moisture contained in the low-temperature steam is adsorbed to the adsorbent 220, and a low-temperature adsorption process is performed.
- the valve (GV-03) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is opened, and the low-temperature steam connected to the second evaporation unit 120
- the valve (GV-04) of the line 121 is closed, the valve (GV-08) of the discharge line 230 connected to the condenser 300 is closed to receive the hot water vapor, and the cold/hot water line (
- the valve (AV-06) and valve (AV-08) of the 400) are opened, and the valve (AV-05) and the valve (AV-07) are closed to provide cooling water to the heat exchange tube 210 to provide high temperature steam.
- a high-temperature adsorption process in which the contained moisture is adsorbed on the adsorbent 220 is performed.
- cooling water is supplied to the beds A 200a and B 200b to reduce or remove heat due to the adsorption of moisture to the adsorbent 220 through the cooling water.
- the valve (GV-06) is closed, the valve (GV-09) of the discharge line 230 connected to the condenser 300 is opened, the valve (AV-09) and the valve ( AV-11) is open and valve AV-10 and valve AV-12 are closed.
- Hot water is supplied to the heat exchange tube 210 by the opening and closing operation of the valves described above to desorb moisture from the adsorbent 220 and supply water vapor to the condenser 300 through the discharge line 230 connected to the condenser 300 The desorption process is carried out.
- valve (GV-01) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is closed, and the second evaporation unit
- the valve (GV-02) of the low-temperature steam line 121 connected to 120 is opened, and the valve (GV-07) of the discharge line 230 connected to the condenser 300 is closed to accommodate low-temperature steam
- Valves (AV-02) and valves (AV-04) of the hot and cold water line 400 are opened by the valve control unit, and valves (AV-01) and valves (AV-03) are closed to transfer cooling water to the heat exchange tube 210 )
- To adsorb moisture contained in the low-temperature steam to the adsorbent 220 is performed.
- the valve (GV-01) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is opened, and the second evaporation unit
- the valve (GV-02) of the low-temperature steam line 121 connected to 120 is closed, and the valve (GV-07) of the discharge line 230 connected to the condenser 300 is closed to receive the high-temperature steam
- the valve (AV-02) and the valve (AV-04) of the hot and cold water line 400 are opened by the valve control unit, and the valve (AV-01) and the valve (AV-03) are closed to transfer coolant to the heat exchange tube (210).
- the valve (GV-04) is closed
- the valve (GV-08) of the discharge line 230 connected to the condenser (300) is opened
- the valve (AV-05) and the valve ( AV-07 is opened
- the valve AV-06 and the valve AV-08 are closed to provide hot water to the heat exchange tube 210 to desorb moisture adsorbed on the adsorbent 220 to the condenser 300
- a desorption process of supplying water vapor to the condenser 300 through the discharge line 230 connected to is performed.
- the valve (GV-05) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is closed, and the low-temperature steam connected to the second evaporation unit 120
- the valve (GV-06) of the line 121 is opened, and the valve (GV-09) of the discharge line 230 connected to the condenser 300 is closed to receive the low temperature steam, and the cold/hot water line (
- the valve (AV-10) and the valve (AV-12) of 400) are opened, and the valve (AV-09) and the valve (AV-11) are closed to provide cooling water to the heat exchange tube 210 to provide low-temperature steam.
- a low-temperature adsorption process in which moisture contained is adsorbed to the adsorbent 220 is performed.
- the valve (GV-02) of the low-temperature steam line 121 and the valve (GV-07) of the discharge line 230 connected to each other are closed, and the valve (AV-01) and the valve (AV) of the cold/hot water line 400 are closed.
- -03) is opened, and the valve AV-02 and the valve AV-04 are closed to provide hot water to the heat exchange tube 210 to perform a preheating process.
- the valve (GV-05) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is closed, and the low-temperature steam connected to the second evaporation unit 120
- the valve (GV-06) of the line 121 is opened, and the valve (GV-09) of the discharge line 230 connected to the condenser 300 is closed to receive the low temperature steam, and the cold/hot water line (
- the valve (AV-10) and the valve (AV-12) of 400) are opened, and the valve (AV-09) and the valve (AV-11) are closed to provide cooling water to the heat exchange tube 210 to provide low-temperature steam.
- a low-temperature adsorption process in which moisture contained is adsorbed to the adsorbent 220 is performed.
- valve (GV-01) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit and the second evaporation unit 120 The valve (GV-02) of the low-temperature steam line 121 connected to) is closed, the valve (GV-07) of the discharge line 230 connected to the condenser 300 is opened, and the valve of the cold/hot water line 400 (AV-01) and valve (AV-03) are open and valve (AV-02) and valve (AV-04) are closed to provide hot water to the heat exchange tube 210 to desorb moisture from the adsorbent 220
- a desorption process of supplying water vapor to the condenser 300 through the discharge line 230 connected to the condenser 300 is performed.
- the valve (GV-03) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is closed, and the low-temperature steam connected to the second evaporation unit 120
- the valve (GV-04) of the line 121 is opened, and the valve (GV-08) of the discharge line 230 connected to the condenser 300 is closed to receive the low-temperature steam, and the cold/hot water line (
- the valve (AV-06) and the valve (AV-08) of 400) are opened, and the valve (AV-05) and the valve (AV-07) are closed to provide cooling water to the heat exchange tube 210 to provide low temperature steam.
- a low-temperature adsorption process in which the contained moisture is adsorbed on the adsorbent 220 is performed.
- the valve (GV-05) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is opened, and the low-temperature steam connected to the second evaporation unit 120
- the valve (GV-06) of the line 121 is closed, and the valve (GV-09) of the discharge line 230 connected to the condenser 300 is closed to receive hot water vapor, and a cold or hot water line (
- the valve (AV-10) and the valve (AV-12) of 400) are opened, and the valve (AV-09) and the valve (AV-11) are closed to provide cooling water to the heat exchange tube 210 to provide high temperature steam.
- a high-temperature adsorption process is performed in which the contained moisture is adsorbed to the adsorbent 220.
- the valve (GV-02) of the steam line (121) and the valve (GV-07) of the discharge line (230) are all closed, and the valve (AV-02) and valve (AV-04) of the hot and cold water line 400 Is opened, and the valve AV-01 and the valve AV-03 are closed to provide cooling water to the heat exchange tube 210 to perform a precooling process.
- the valve (GV-03) of the high-temperature steam line 111 connected to the first evaporation unit 110 by a valve control unit is closed, and the low-temperature steam connected to the second evaporation unit 120
- the valve (GV-04) of the line 121 is opened, and the valve (GV-08) of the discharge line 230 connected to the condenser 300 is closed to receive the low-temperature steam, and the cold/hot water line (
- the valve (AV-06) and the valve (AV-08) of 400) are opened, and the valve (AV-05) and the valve (AV-07) are closed to provide cooling water to the heat exchange tube 210 to provide low temperature steam.
- a low-temperature adsorption process in which moisture contained is adsorbed to the adsorbent 220 is performed.
- the valve (GV-05) of the high-temperature steam line 111 connected to the first evaporation unit 110, the valve of the low-temperature steam line 121 connected to the second evaporation unit 120 Both the GV-06 and the valve GV-09 of the discharge line 230 are closed, the valve AV-09 and the valve AV-11 of the cold/hot water line 400 are opened, and the valve AV- 10) and the valve AV-12 are closed to perform a preheating process of preheating as hot water is provided to the heat exchange tube 210.
- cycle #1, replacement #1, cycle #2, replacement #2, cycle #3, and replacement #3 may be sequentially and repeatedly performed.
- water in the condenser 300 can be prevented from moving to the reaction unit 200 through preheating and precooling processes, the pressure can be adjusted, and energy can be saved.
- the uptake capacity of the adsorbent for a specific adsorbent can be obtained from adsorption isotherm data indicating the amount of adsorption in equilibrium for an infinitely long time.
- the COP used as the figure of merit of the AD system is defined as the ratio of the latent heat of evaporation to the heat of desorption of the adsorbate.
- a method of improving the ratio of the volume or the installation area to the capacity of the conventional AD system is to apply a cycle having an improved net uptake capacity.
- the higher adsorption amount of the adsorbent results in a high adsorption rate and a low heat of adsorption close to the latent heat of the adsorbate at relative pressure.
- Most of the conventional AD systems operate under an operating condition with an adsorption rate of about 02, and accordingly, the COP of the conventional AD system can be improved by about 015 or more than before by increasing the effective equilibrium adsorption amount.
- FIG. 12 is a graph showing the performance of the adsorption-type seawater desalination system using the multi-effect evaporation device according to the present invention.
- the present invention configured as described above, it is possible to supplement the coefficient of performance (COP) and maximize the freshwater production, and the cold water busted through each of the first evaporation unit and the second evaporation unit is localized. It can be used as water for district cooling and residential cooling, and it has the effect of using condensed water generated by latent heat exchange between seawater and steam through a multi-utility method as fresh water.
- COP coefficient of performance
- Valves (AV-01, AV-02, AV-03, AV-04, AV-05, AV-06, AV-07, AV-08, AV-09, AV-10, AV-11, AV-12)
- the present invention relates to an adsorption desalination (AD) system for desalination of seawater, a multi-effect evaporation apparatus 100 for producing high-temperature steam and low-temperature steam, and a high-temperature steam produced in the multi-effect evaporation apparatus 100
- a plurality of reaction units 200 including an adsorbent 220 for adsorbing or desorbing moisture by receiving low temperature steam and a heat exchange tube 210 capable of transferring heat to the adsorbent 220 through cooling water or hot water, and the Cooling water or hot water is selectively selected in the condenser 300 and the heat exchange tube 210 of the reaction unit 200 to condense the water vapor containing moisture desorbed from the adsorbent 220 of the reaction unit 200 to recover as fresh water.
- AD adsorption desalination
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- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Sorption Type Refrigeration Machines (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
Abstract
Description
Claims (6)
- 고온수증기 및 저온수증기를 생산하는 다중효용증발장치(100)와;상기 다중효용증발장치(100)에서 생산된 고온수증기 또는 저온수증기를 받아 수분을 흡착 또는 탈착하는 흡착제(220) 및 냉각수나 온수를 통해 상기 흡착제(220)로 열을 전달 가능한 열교환튜브(210)를 포함하는 포함하는 복수의 반응부(200)와;상기 반응부(200)의 흡착제(220)에서 탈착된 수분이 함유된 수증기를 담수로 회수할 수 있도록 응축시키는 응축기(300)와;상기 반응부(200)의 열교환튜브(210)에 냉각수 또는 온수를 선택적으로 공급하는 냉온수라인(400)과;상기 다중효용증발장치(100)와 상기 반응부(220) 및 상기 반응부(220)와 상기 응축기(300)를 각각 연결하는 수증기라인, 상기 수증기라인에 구비된 밸브, 상기 냉온수라인(400)에서 상기 열교환튜브(210)로 제공되는 냉각수 또는 온수를 선택적으로 공급을 위하여 상기 밸브의 작동을 제어하는 밸브제어부;를 포함하는 것을 특징으로 하는 다중효용증발장치를 이용한 흡착식 해수담수화 시스템.
- 청구항 1에 있어서,상기 반응부(200)는,상기 흡착제(220) 및 열교환튜브(210)를 각각 포함하는 베드A(200a), 베드B(200b) 및 베드C(200c)로 구성되며,상기 베드A(200a), 베드B(200b) 및 베드C(200c)는 각각 상기 밸브제어부의 제어를 통해 상기 다중효용증발장치(100)에서 생성된 고온수증기 또는 저온수증기를 선택적으로 공급받고, 상기 냉온수라인을 통해서 냉각수 또는 온수를 선택적으로 공급받아 저온흡착공정, 고온흡착공정, 예열공정, 탈착공정, 예냉공정을 순차적으로 수행하는 것을 특징으로 하는 다중효용증발장치를 이용한 흡착식 해수담수화 시스템.
- 청구항 2에 있어서,상기 베드A(200a), 베드B(200b) 및 베드C(200c) 중 어느 하나는 저온흡착공정을 수행할 때, 다른 하나는 고온흡착공정을 수행하고, 나머지 하나는 탈착공정을 수행하는 것을 특징으로 하는 다중효용증발장치를 이용한 흡착식 해수담수화 시스템.
- 청구항 1에 있어서,상기 다중효용증발장치(100)는,복수의 연속된 증발기 및 고온수증기를 배출하는 고압증발기(130a)를 포함하는 제1 증발부(110); 및복수의 연속된 증발기 및 최종 저온수증기를 배출하는 저압증발기(130b)를 포함하는 제2 증발부(120);를 포함하는 것을 특징으로 하는 다중효용증발장치를 이용한 흡착식 해수담수화 시스템.
- 청구항 4에 있어서,상기 제1 증발부(110)와 상기 제2 증발부(120)는 서로 연결되며, 상기 제1 증발부(110)의 증발기A1부터 상기 제2 증발부(120)의 저압증발기(130b)까지 내부에서 생성된 응축수가 순차적으로 이동하여 담수를 생산하는 것을 특징으로 하는 다중효용증발장치를 이용한 흡착식 해수담수화 시스템.
- 청구항 4에 있어서,상기 증발기(130)는,기체를 수용하는 방열관체(132)와;상기 방열관체(132)의 표면에 해수를 분사하는 분사노즐(133)과;상기 분사노즐(133)의 상부에 구비되며, 해수의 증발에 따른 수증기에서 액적을 분리하는 데미스터(134)와;상기 분사노즐(133), 방열관체(132) 및 데미스터(134)를 수용하는 하우징(131)을 포함하는 것을 특징으로 하는 다중효용증발장치를 이용한 흡착식 해수담수화 시스템.
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CN113651384A (zh) * | 2021-08-19 | 2021-11-16 | 东北电力大学 | 一种耦合吸附装置的多级喷射闪蒸海水淡化系统 |
CN114835184B (zh) * | 2022-05-13 | 2023-02-28 | 大连理工大学 | 一种基于水合物水蒸气吸附法的污水处理方法及装置 |
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