WO2022013748A1 - Système de traitement des fluides basé sur un humidificateur-déshumidificateur - Google Patents

Système de traitement des fluides basé sur un humidificateur-déshumidificateur Download PDF

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Publication number
WO2022013748A1
WO2022013748A1 PCT/IB2021/056305 IB2021056305W WO2022013748A1 WO 2022013748 A1 WO2022013748 A1 WO 2022013748A1 IB 2021056305 W IB2021056305 W IB 2021056305W WO 2022013748 A1 WO2022013748 A1 WO 2022013748A1
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WO
WIPO (PCT)
Prior art keywords
humidifier
treatment system
air
fluid treatment
based fluid
Prior art date
Application number
PCT/IB2021/056305
Other languages
English (en)
Inventor
Prakash Bhalekar
Anirudh Bhalekar
Original Assignee
Padmini Vna Mechatronics Pvt. Ltd.
Quadsun Solar Private Limited
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Padmini Vna Mechatronics Pvt. Ltd., Quadsun Solar Private Limited filed Critical Padmini Vna Mechatronics Pvt. Ltd.
Publication of WO2022013748A1 publication Critical patent/WO2022013748A1/fr

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Classifications

    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/0011—Heating features
    • B01D1/0029—Use of radiation
    • B01D1/0035—Solar energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/14—Evaporating with heated gases or vapours or liquids in contact with the liquid
    • 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
    • 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
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
    • 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
    • Y02W10/33—Wastewater or sewage treatment systems using renewable energies using wind energy
    • 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
    • Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy

Definitions

  • the present invention relates to a humidifier-dehumidifier based fluid treatment system. More particularly, the present invention relates to a humidifier-dehumidifier based fluid treatment system used for distilling pure water out of impure water.
  • the fluid treatment system has application in distilling any other pure liquid from dissolved impurities.
  • US3740959A teaches a humidifier-dehumidifier device that operates in combination with a water closet.
  • the device includes a housing with a fan mounted therein. The fan blows air through water transfer means and cooling fins positioned within the housing. Control means alteratively energize the water transfer means to humidify the air, or the cooling fins to dehumidify the air.
  • the water closet acts as a cycling water reservoir in the humidifying mode of operation and as a catch basin in the dehumidifying mode of operation.
  • the drawback of the invention is the limited application to small scale appliances. Further, the device utilizes water absorbent material which after a duration requires replacement.
  • US9643102B2 teaches a humidification-dehumidification desalination system includes a humidifier, a dehumidifier, and a carrier gas that is humidified in the humidifier and condensed in the dehumidifier to produce purified water.
  • the humidifier preferably includes multiple stages in a staircase configuration in which at least one stage has a perforated or porous plate and the carrier gas is bubbled through the bottom of the plate into the “liquid to be purified” atop the plate.
  • the dehumidifier may also include multiple stages in a staircase configuration in which at least one stage has a perforated or porous plate and the carrier gas is bubbled through the bottom of the plate into the purified liquid atop the plate.
  • the staircase arrangement used in invention is bulky and expensive.
  • the main object of the present invention is to provide a low temperature, high efficiency humidifier-dehumidifier based fluid treatment system comprising of an evaporator unit acting as humidifier and a condenser unit acting as dehumidifier that efficiently separates the dissolved contents from fluid used and produces the pure fluid.
  • the system uses air as a carrier gas which is humidified and dehumidified in a closed loop to purify brine streams.
  • Another object of the present invention is to provide a humidification and dehumidification based fluid treatment system designed to operate at a temperature between 5-20°C above ambient for humidification and at a temperature 5-20°C below ambient for dehumidification. This low temperature enables low energy consumption in the humidification-dehumidification (HDH) process.
  • HDH humidification-dehumidification
  • Another object of the present invention is to control the humidification-dehumidification (HDH) process in the humidifier-dehumidifier based fluid treatment system by regulating the relative humidity of the carrier gas by appropriate mixing of the carrier gas with fresh air and exhausting carrier gas to maintain humidity at the specified control limits.
  • HDH humidification-dehumidification
  • Yet another object of the present invention is to control the humidification- dehumidification (HDH) process in the humidifier-dehumidifier based fluid treatment system by regulating the effluent injection temperature into the evaporator unit.
  • HDH humidification- dehumidification
  • Yet another object of the present invention is to provide a humidifier-dehumidifier based fluid treatment system that utilizes solar energy, generic heat pumps, low lift heat pumps, vapor absorption machines or other methods of generating heat or cold.
  • the present invention provides a humidifier-dehumidifier based fluid treatment system comprising of an evaporator unit acting as humidifier and a condenser unit acting as dehumidifier with intelligently controlled inlet of air/gases and liquid to efficiently separate the dissolved contents from liquid used and produces the pure liquid.
  • the present invention provides a humidifier-dehumidifier based fluid treatment system comprising of an evaporator unit acting as humidifier and a condenser unit.
  • the evaporator unit powered by solar energy acts as humidifier consisting of a stack of specially designed pans that when injected with hot effluent and under an intelligent control of air flow maximizes the evaporation rates.
  • the output of this evaporator unit is humidified air and a flow of cold un evaporated effluent. The loss of heat from the fluid as it evaporates reduces its temperature to lower than ambient when the process is properly controlled. This cold fluid -flush is used in condenser unit to cool the humid air to help condense the fluid out.
  • the cold fluid flush reduces the cooling load and improves the efficiency of the system.
  • additional source of cooling is optionally employed to maximize the extraction of vapors from the air.
  • the system utilizes a control unit to intelligently control the induction of fresh air and outlet of humid air to manage the air psychometrics.
  • the humidifier-dehumidifier based fluid treatment system is a closed system with air circulation and the air is cyclical humidified and dehumidified to extract water.
  • This system utilizes a low lift heat pump and a temperature management unit to maximize the production of pure fluid.
  • the low lift heat pump cools the air to condense water and uses the heat from the air to heat effluent and it is specifically designed to increase and decrease temperatures by 5-10°C.
  • the present invention provides a humidifier-dehumidifier based fluid treatment system comprising of a closed housing having a structure including but not limited to an elliptical double walled structure or an elliptical structure, rectangular structure with a separator wall in the centre, at least one fan, injection lines, evaporator unit, condenser unit, at least two flush points, at least two humidity sensors connected with ground, data and live wires and plurality of pans.
  • the present invention provides an environment friendly humidifier dehumidifier- based fluid treatment system which is a closed system with maximized production of pure liquid.
  • Fig. 1(a) is a schematic diagram of the humidifier-dehumidifier based fluid treatment system according to an embodiment of the present invention.
  • Fig. 1(b) is a schematic diagram of the humidifier-dehumidifier based fluid treatment system according to an alternative embodiment of the present invention.
  • Fig. 2 is a top view of the hiimidifier-dehumidifier based fluid treatment system according to an alternative embodiment of the present invention.
  • Fig. 3 is a block diagram of working process of the humidifier-dehumidifier based fluid treatment system according to an alternative embodiment of the present invention.
  • Fig. 4(a) is a graphical representation of a top cross-section of pan, showing air flow and convectional currents with high air-flow rate.
  • Fig. 4(b) is a graphical representation of top cross-section of pan, showing instabilities and convectional currents with low air-flow rate.
  • Fig. 5 is a graphical representation of outputs of the simulations of the humidifier- dehumidifier based fluid treatment system.
  • Figs. 6(a) to 6(d) are graphical representation of high correlation in the humidifier- dehumidifier based fluid treatment system.
  • the present invention provides a humidifier-dehumidifier based fluid treatment system that combines use of a solar energy powered evaporator unit and a condenser unit with intelligently controlled inlet of air/gases and liquid which efficiently separates dissolved contents from fluid and maximizes the production of pure fluid.
  • the present invention provides a humidifier-dehumidifier based fluid treatment system comprising of an evaporator unit acting as humidifier and a condenser unit.
  • Said humidifier-dehumidifier based fluid treatment system comprises of a closed housing, at least one evaporator unit, a condenser unit, a plurality of fans, at least air/gas inlet, a plurality of fluid transmission lines, wherein said evaporator unit utilizes solar energy to heat the fluid for evaporation and said evaporator unit and condenser unit are installed in the closed housing forming a closed loop.
  • the evaporator unit comprises of a plurality of stands with stack of specially designed pans on each stand on which a heated effluent is sprayed through a plurality of injection lines and under an intelligent control of air flow the evaporation rate is maximized.
  • the injection lines are in connection with a liquid reservoir through a water pump and a heating apparatus which uses solar energy for heating the liquid.
  • a heating apparatus which uses solar energy for heating the liquid.
  • At the inlet end of the evaporator unit there is a supply of intelligently controlled air/gas through at least one fan.
  • the output of this evaporator is humidified air and a flow of cold unevaporated effluent.
  • the loss of heat from the fluid as it evaporates reduces its temperature to lower than ambient when the process is properly controlled.
  • the cold unevaporated effluent i.e., cold fluid -flush is used in condenser unit to cool the humid air to help condense the fluid out.
  • the condenser unit comprises of a plurality of cooling coils to cool down the humid gas coming out of the evaporator and provide dry gas and recover the pure liquid produced from condensation.
  • the cold fluid flush reduces the cooling load and improves the efficiency of the system by up to 5%.
  • additional source of cooling is optionally employed to maximize the extraction of vapors from the air.
  • the cold unevaporated effluent from evaporator unit is flowed to the condenser unit though a liquid transmission line to cool down the carrier gas flowing the cooling coils.
  • At least one fan installed at the extreme ends of the closed housing help in circulating air in the housing.
  • the system utilizes a control unit to intelligently control the induction of fresh air and outlet of humid air to manage the air psychometrics.
  • the humidifier-dehumidifier based fluid treatment system is a closed system with air circulation and the air is cyclical humidified and dehumidified to extract water.
  • This system utilizes a low lift heat pump and a temperature management unit to maximize the production of pure fluid.
  • the low lift heat pump is either electrically driven or heat driven by a vapour absorption chiller (VAM).
  • VAM vapour absorption chiller
  • the low lift heat pump cools the air to condense water and uses the heat from the air to heat effluent and it is specifically designed to increase and decrease temperatures by 5-10°C.
  • the humidifier- dehumidifier based fluid treatment system is designed to operate at a temperature between 5-20°C above ambient for humidification and at a temperature 5-20°C below ambient for dehumidification.
  • the humidification- dehumidification (HDH) process in the humidifier-dehumidifier based fluid treatment system is controlled by regulating the relative humidity of the carrier gas by appropriate mixing of the carrier gas with fresh air and exhausting carrier gas to maintain humidity at the specified control limits. Also, the humidification-dehumidification (HDH) process is controlled by regulating the effluent injection temperature into the evaporator unit.
  • the present invention provides a humidifier-dehumidifier based fluid treatment system with an evaporator unit and a condenser unit housed in a closed housing wherein the condenser unit optionally uses a cooling apparatus with an industrial refrigerant to maximize the performance and a fog catcher at the outlet of the condenser unit to maximize the condensation without use of any additional energy.
  • the humidifier-dehumidifier based fluid treatment system 10 comprises of a closed housing 11, at least one evaporator unit 12 acting as humidifier, a condenser unit 13 acting as dehumidifier, a plurality of fan 14, at least air/gas inlet 15, a plurality of liquid transmission lines 16, wherein said evaporator unit 12 utilizes solar energy to heat the liquid for evaporation and said evaporator unit 12 and condenser unit 13 are installed in the said closed housing 11 to form a closed loop to provide a humid gas out of evaporation and produce pure liquid out of condensation.
  • the evaporator unit 12 includes a fluid reservoir 17 and a heating apparatus 18.
  • the evaporator unit 12 has a plurality of injection lines 22 which draw heated fluid/effluent from the fluid reservoir 17 through heating apparatus 18 using a water pump 29.
  • the output from the evaporator unit 12 is humidified air and a flow of cold unevaporated effluent.
  • the cold unevaporated effluent i.e., cold fluid -flush from evaporator unit 12 is flown through liquid transmission line 16 for use in condenser unit 13 to cool the humid air to help condense the fluid out.
  • a fan 14 is installed at the extreme ends of the housing 11 help in circulating air in the closed housing 11.
  • the heating apparatus 18 comprises of a low lift heat pump 27 and a temperature management unit 28 that moves and cools the air to condense water and uses the heat from the air to heat the fluid/effluent.
  • the low lift heat pump 27 is specifically designed to increase and decrease temperatures by 5-10°C.
  • the closed housing is having a structure including but not limited to an elliptical double walled structure or an elliptical structure, rectangular structure with a separator wall in the centre.
  • the humidifier-dehumidifier based fluid treatment system 10 comprises of a closed housing 11, at least one evaporator unit 12 having a fluid reservoir 17 and a heating apparatus 18, a condenser unit 13, a plurality of fan 14, at least air/gas inlet 15, a plurality of liquid transmission lines 16.
  • the heating apparatus 18 utilizes solar energy to heat the liquid for evaporation.
  • the condenser unit 13 uses a cooling apparatus 19 with an industrial refrigerant to maximize the performance and a fog catcher 20 at the outlet end of the condenser unit 13 to maximize the condensation with use of any additional energy.
  • FIG. 2 a block diagram of working process of the humidifier-dehumidifier based fluid treatment system is illustrated.
  • Two fluid circuits are maintained to enable efficient heating of the effluent and further used in cooling.
  • One circuit maintains the controlled injection of the hot effluent into the evaporator unit 12 via an injection controller 30.
  • the fluid flows across the pans, evaporating and cooling in the process.
  • the effluent cool downs to ambient or lower even when pre-heated to 60°C or higher.
  • the cold flush is used to cool the moist air down to (or at least close to) the dew point required.
  • the flush is then recollected and heated to be injected again.
  • the refrigerant is cycled through the cold side of the heat pump 27 and is pumped through a condenser module. This happens after the cold flush has already cooled the saturated air. The refrigerant then works to remove the latent heat from the vapour and efficiently condense the water out. Additionally, the flow of refrigerant is controlled by a control unit 26. The fan 14 speed in the evaporator unit 12 is lowered to maximize the time die air spends cooling.
  • a top view of the humidifier- dehumidifier based fluid treatment system comprising of a closed housing 11 having a structure including but not limited to an elliptical double walled structure or an elliptical structure, rectangular structure with a separator wall 21 in the centre, at least one fan 14, injection lines 22, evaporator unit 12, condenser unit 13, at least two flush points 23, at least two humidity sensors 24 connected with ground, data and live wires and plurality of pans 25.
  • the humidifier-dehumidifier based fluid treatment system 10 was further test to showcase the increased efficiency.
  • the air flow inside the system 10 is analysed by computational fluid dynamics simulation methodology and the results of the simulation are presented in Fig. 4(a) and Fig. 4(b).
  • Fig. 4(a) shows a top cross-section of pan, showing air flow and convectional currents with high air-flow rate i.e., more than 5 m/s
  • Fig. 4(b) shows top cross-section of pan, showing instabilities and convectional currents with low air-flow rate i.e., less than 5 m/s.
  • currents due to turbulence aid in the process of evaporation.
  • a simulation was programmed to predict the behaviour of the system 10 for some sets of effluent and condenser temperatures that are presented in Table 2 and output of the simulation is presented in Table 3.
  • Fig. 5 represents a graphical representation of outputs of the simulations from which a noticeably good correlation factor between the simulated data and experimental data was observed. An average r-squared value of 0.98 is observed which indicates a high correlation as depicted in Figs. 6(a) to 6(d).
  • a range for the amount of water generated are in litre/hour/meter square where it refers to the area of pan utilized.
  • ambient RH 50%
  • ambient temperature 35°C
  • the liquid temperature 28.4376°C
  • the water evaporated 1.0596 LPH
  • the amount of water condensed is 0.64685 LPH.
  • ambient RH is 80%
  • ambient temperature is 25°C
  • water evaporated is 0.96836 LPH
  • after condensing process the amount of water condensed is 0.29432 LPH.
  • WAIV Wind Assisted Intensive evaporation
  • solar stills Two existing methods for testing high-efficiency evaporation include WAIV (Wind Assisted Intensive evaporation) systems and solar stills.
  • the advertised capacity for evaporation for WAIV1 systems ranges between 2000-5000 gallons a day per unit. Each unit has a wetted surface area of 1.4 acres or 5600 square m. Therefore, the evaporation rate is (at the higher end) 3.8 L/day/m 2 which amounts to 0.16 L/h/m 2 .
  • the system 10 achieves an evaporation rate of 0.31 L/h/m 2 (ambient temperature: 35°C; ambient humidity: 60%; no liquid preheating; fan speed at 2 m/s).
  • Solar stills tested in temperate regions report an average evaporation rate of 2.9 L/day /meter square. Again, the solar stills are a passive system but are useful in collecting distillate.
  • the present invention provides a humidifier-dehumidifier fluid treatment system with maximized evaporation and condensation to efficiently separate the dissolved contents from fluid used and maximize production of pure liquid using intelligently controlled inlet of gas/air and liquid in the system.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sustainable Energy (AREA)
  • Sustainable Development (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Drying Of Gases (AREA)

Abstract

La présente invention concerne un système de traitement de fluide basé sur un humidificateur-déshumidificateur comprenant un boîtier fermé (11), une unité d'évaporateur (12), une unité de condenseur (13), une pluralité de ventilateurs (14), une entrée air/gaz (15) et des conduites de transmission de liquide (16), ladite unité d'évaporation (12) utilisant une énergie renouvelable pour chauffer ledit fluide/effluent pour l'évaporation, et le taux d'évaporation étant maximisé sous une commande intelligente du flux d'air, ladite unité d'évaporateur (12) et l'unité de condenseur (13) sont installées dans ledit boîtier fermé (11) pour former une boucle fermée afin de réduire la consommation d'énergie, ledit appareil de chauffage (18) comprend une pompe à chaleur à basse pression (27) et une unité de gestion de la température (28), ledit système de traitement de fluide basé sur un humidificateur-déshumidificateur (10) comprenant au moins deux capteurs d'humidité (24) connectés à des fils de terre, de données et sous tension, et utilisant une unité de commande pour commander intelligemment l'entrée d'air frais et la sortie d'air humide afin de gérer les paramètres psychométriques de l'air.
PCT/IB2021/056305 2020-07-13 2021-07-13 Système de traitement des fluides basé sur un humidificateur-déshumidificateur WO2022013748A1 (fr)

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IN202011029763 2020-07-13

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104709953A (zh) * 2014-12-15 2015-06-17 北京理工大学 热能梯级利用的多级回热加湿除湿海水淡化装置
CN108840384A (zh) * 2018-07-23 2018-11-20 大连理工大学 小型模块式热法高盐废水脱盐系统及方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104709953A (zh) * 2014-12-15 2015-06-17 北京理工大学 热能梯级利用的多级回热加湿除湿海水淡化装置
CN108840384A (zh) * 2018-07-23 2018-11-20 大连理工大学 小型模块式热法高盐废水脱盐系统及方法

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