WO2010029723A1 - Appareil et procédé d'évaporation-épaississement/condensation multi-étage - Google Patents

Appareil et procédé d'évaporation-épaississement/condensation multi-étage Download PDF

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Publication number
WO2010029723A1
WO2010029723A1 PCT/JP2009/004440 JP2009004440W WO2010029723A1 WO 2010029723 A1 WO2010029723 A1 WO 2010029723A1 JP 2009004440 W JP2009004440 W JP 2009004440W WO 2010029723 A1 WO2010029723 A1 WO 2010029723A1
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Prior art keywords
chamber
evaporation
condensation
condensing
liquid
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PCT/JP2009/004440
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English (en)
Japanese (ja)
Inventor
矢部孝
増田勇
島林洋吉
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日曹エンジニアリング株式会社
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Priority to JP2010528616A priority Critical patent/JP5555168B2/ja
Publication of WO2010029723A1 publication Critical patent/WO2010029723A1/fr

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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
    • B01D1/0088—Cascade evaporators
    • 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
    • B01D5/0078—Condensation of vapours; Recovering volatile solvents by condensation characterised by auxiliary systems or arrangements
    • B01D5/009—Collecting, removing and/or treatment of the condensate
    • 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
    • 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
    • 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
    • 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
    • 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
    • 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 applies evaporative concentration / condensation technology, for example, when producing fresh water from a stock solution such as seawater or rainwater, or condensing evaporated steam while concentrating the target stock solution in a food or other industrial production process.
  • the present invention relates to a multistage evaporative concentration / condensing apparatus and method suitable for the above.
  • Evaporative concentration / condensation technology is important not only in the industrial and agricultural fields, but also as a countermeasure against water shortages accompanying recent warming, particularly as a desalination technology.
  • a reverse osmosis membrane method for example, JP-A-2006-122787
  • an evaporation method for example, Patent Document 1
  • the evaporation method uses evaporation concentration / condensation technology.
  • an evaporation chamber in which a stock solution (seawater) flowing through the bottom of the apparatus is flushed under reduced pressure to generate water vapor, and its evaporation
  • a plurality of condensing heat transfer tubes are arranged above the chamber, and are composed of a condenser provided with a stock solution spraying device so as to face the heat transfer tubes from above.
  • steam is passed inside a several condensation heat exchanger tube, water vapor
  • the reverse osmosis membrane method has a problem that a large amount of electric power is consumed for pressurization and the maintenance cost is bulky.
  • the conventional evaporation method requires a large amount of energy, such as heating the stock solution (seawater) at a high temperature to evaporate, or reducing the pressure to increase the evaporation efficiency, and is used in countries and regions where energy resources are scarce. It becomes difficult.
  • the main parts of the evaporation chamber and the condenser are provided in multiple stages in order to increase the production amount, but the main part is arranged in a horizontal direction and requires a large installation area.
  • the present invention solves the above-described problems, and provides a multi-stage evaporative concentration / condensing apparatus and method that improve vaporization efficiency and condensation efficiency, and that are easy to improve in terms of energy saving, maintainability, and installation area.
  • the purpose is to do.
  • the multistage evaporative concentration / condensation apparatus of the present invention heats a raw solution, vaporizes a part of the solvent in the evaporation chamber and treats it to a concentrated solution, and converts the vaporized vapor into the condensation chamber.
  • an evaporation processing unit in which a plurality of the evaporation chambers are stacked one above the other, and each evaporation chamber provided to face the evaporation processing unit have predetermined dimensions.
  • a condensing processing section that stacks a plurality of the condensing chambers vertically and a demister provided so as to communicate the adjacent evaporation chamber and the condensing chamber. Evaporating chamber, adjacent condensing chamber, lower evaporating chamber, adjacent condensing chamber, and so on, a unidirectional gas flow from the uppermost evaporating chamber through the demister to the lowermost condensing chamber.
  • Airflow that circulates to the condensing chamber Means, a liquid-liquid heat exchanger that heats the stock solution by performing heat exchange between the stock solution and the condensate accumulated in the condensation chamber, and cools the condensate, and the stock solution, the concentrated solution, and the condensation Spraying means for making the liquid into droplets or spraying and bringing it into gas-liquid contact with the gas formed by the airflow forming means to promote vaporization in the evaporation chamber and condensation in the condensing chamber; It is characterized by being.
  • the evaporation processing unit has a plurality of evaporation chambers arranged vertically.
  • the condensation processing unit is provided opposite to the evaporation processing unit, and a plurality of condensing chambers are arranged above and below each of the evaporation chambers with a predetermined shift.
  • the demister only needs to separate the liquid and the gas and pass the gas in the gas flow exclusively.
  • the air flow forming means pumps a gas such as air as a gas flow at a predetermined flow rate and flow velocity, and also sends the gas in one direction via a connection pipe connecting the uppermost evaporation chamber and the lowermost condensation chamber. Transfer in circulation.
  • the present invention as described above is more preferably embodied as in claims 2-5. That is, (a) the spraying means is provided in the uppermost evaporation chamber and sprayed with the heated stock solution; and the spraying means is provided in an evaporation chamber other than the uppermost and accumulated in the upper evaporation chamber. A second spraying means for spraying the concentrated liquid in the lower evaporation chamber; and a third spraying means for spraying the condensate provided in each condensation chamber and accumulated in the corresponding condensation chamber in the corresponding condensation chamber. (Claim 2).
  • each spraying unit is installed so that the spraying direction intersects with the flow direction of a gas flow such as air formed by the airflow forming unit as much as possible, that is, exchanges.
  • the spraying means is a spray nozzle (Claim 3), or a rotary blade that makes the supplied liquid into droplets or sprays by the rotational force of a motor (Claim 4).
  • C A configuration in which the evaporation processing unit and the condensation processing unit are arranged to face each other in a state where a substantially cylindrical interior is divided through a vertical partition wall, and the demister is attached to the partition wall (Claim 5).
  • the evaporation processing unit and the condensing processing unit are arranged to face each other in a state where the inside of a rectangular tank or a rectangular tube is divided through a vertical partition wall, and the demister is attached to the partition wall. (Claim 6).
  • the multistage evaporation concentration / condensation method of the present invention heats the stock solution, evaporates a part of the solvent in the evaporation chamber, processes the concentrated solution, and condenses the vaporized vapor.
  • the evaporative concentration / condensation method which is led to a chamber and processed into a condensate, the raw solution heated by using the multistage evaporative concentration / condensation device according to any one of claims 1 to 6 is converted into the uppermost evaporating chamber.
  • the condensing chamber adjacent to the uppermost evaporation chamber through the demister by bringing the gas flow into contact with the gas flow formed by the airflow forming means and a part of the gas flow.
  • Spray the liquid and steam Are allowed, it is characterized in that to cool condensed by spraying condensate accumulated the the corresponding condensing chamber in each condensation chamber.
  • the gas flow forming means is used for air in a state where each evaporation chamber constituting the evaporation processing portion and each condensation chamber constituting the condensation processing portion are vertically arranged and shifted by a predetermined dimension.
  • Gas stream such as the uppermost evaporating chamber, the adjacent condensing chamber, the lower evaporating chamber, and the adjacent condensing chamber in one direction through a corresponding demister so that a droplet or Evaporation efficiency is improved by bringing the injected stock solution or concentrated liquid into contact with the gas in the gas stream, or droplets on the condensation chamber side or the condensed liquid to be injected in contact with the gas in the gas stream. Condensation efficiency can be improved.
  • the stock solution heated by the first injection means is injected in the uppermost evaporation chamber
  • the concentrated liquid accumulated in the upper evaporation chamber is injected by the second spraying means in the lower evaporation chamber
  • the third The condensate accumulated in the condensing chamber is sprayed by the spraying means in the corresponding condensing chamber so that the raw liquid, the concentrated liquid, and the condensate can be efficiently brought into gas-liquid contact with the gas in the gas flow.
  • the degree of freedom in design can be obtained by making it possible to select from known injection means provided in the evaporation chamber and the condensation chamber.
  • an evaporation concentration / condensation method in which the stock solution is heated, a part of the solvent is vaporized in the evaporation chamber and processed into a concentrated liquid, and the vaporized vapor is guided to the condensation chamber and processed into a condensed liquid.
  • the multistage evaporative concentration / condensing apparatus of a 1st form is shown, (a) is the model top view, (b) is a model longitudinal cross-sectional view.
  • the multistage evaporative concentration / condensing apparatus of a 2nd form is shown, (a) is the model top view, (b) is a model longitudinal cross-sectional view.
  • the multi-stage evaporative concentration / condensation apparatus shown in FIG. 1 has an evaporating unit 1 in which a main part stacks a plurality of evaporating chambers 10 to 13 and a plurality of condensing chambers 20 to 22 in an up and down direction.
  • Condensation processing unit 2 that is stacked, and demister 3 provided so as to communicate between the evaporation chambers 10 to 12 and the condensation chambers 20 to 22 that are adjacent to each other, and a gas such as air.
  • the blower 4 which is a gas forming means, the seawater a which is a stock solution, and the condensing chambers 20 to 22
  • the liquid-liquid heat exchanger 5 that heats the seawater a by performing heat exchange with the condensates 20a to 22a and cools the condensates 20a to 22a, seawater a that is a raw liquid, concentrated liquids 10a to 12a, condensate liquid Spraying means 6a to 20a to 22a in the form of droplets or sprays And a c.
  • the evaporation processing unit 1 and the condensing processing unit 2 are arranged to face each other in a state where the inner space of the substantially cylindrical tower 7 is divided through the partition wall 8 in the vertical direction.
  • the evaporation processing unit 1 provides a plurality of (two in this example) bottom walls 9a between the corresponding inner peripheral surface of the tower 7 and the partition wall 8 in parallel with a space therebetween, thereby evaporating chambers 10-12. Are stacked in a vertical direction.
  • the concentrated liquid 12a accumulated in the lowermost evaporation chamber 12 can be discharged as the most concentrated liquid (concentrated salt water).
  • the condensation processing unit 2 moves the condensation chambers 20 to 22 up and down by providing a plurality (two in this example) of bottom walls 9b parallel to each other between the corresponding inner peripheral surface of the tower 7 and the partition wall 8. It is formed in a laminated state.
  • the evaporation chambers 10 to 12 and the condensation chambers 20 to 22 are shifted up and down by a predetermined dimension.
  • the deviation dimension is between the uppermost evaporating chamber 10 and the uppermost condensing chamber 20, between the lower (middle) evaporating chamber 11 and the uppermost condensing chamber 20, and lower (middle).
  • With the condensing chamber 21, between the lowermost evaporating chamber 13 and the middle condensing chamber 21, and between the lowermost condensing chamber 22 with a predetermined large demister 3. is there.
  • each of the demisters 3 partitions the partition wall 8 that partitions the uppermost evaporating chamber 10 and the uppermost condensing chamber 20, and the middle evaporating chamber 11 and the uppermost condensing chamber 20.
  • a partition part partitioning the middle stage evaporation chamber 11 and the middle stage condensation chamber 21, a partition part partitioning the bottom stage evaporation chamber 13 and the middle stage condensation chamber 21, and a bottom stage evaporation chamber 13 Each is attached to a partition portion that partitions the lowermost condensing chamber 22.
  • the uppermost evaporating chamber 10 to the lowermost condensing chamber 22 are the uppermost evaporating chamber 10, the adjacent condensing chamber 20, the middle evaporating chamber 11, and the adjacent evaporating chamber 11.
  • the condensing chamber 21 can communicate with each other through the demisters 3.
  • the partition wall 8 is designed to equally divide the inside of the tower 7 into an evaporation processing section or evaporation chamber side and a condensation processing section or condensation chamber side, as shown in FIG. Instead, the evaporation processing unit or the evaporation chamber side may be made larger than the condensation processing unit or the condensation chamber side, or conversely, the condensation processing unit or the condensation chamber side may be made larger than the evaporation processing unit or the evaporation chamber side.
  • a rectangular tank or square tube-shaped tower 7A is divided, that is, the inside of the tower 7A is divided into a rectangular shape with the rectangular evaporation processing unit 1 or the evaporation chamber side via a partition wall 8.
  • Each demister 3 may be a known mist separator, and may be any of a mesh mist separator, a corrugated mist separator, and a fiber bed mist separator. The sizes and shapes of the demisters 3 may be changed on the upper side and the lower side, in addition to the same size and shape.
  • an inlet 1a for introducing gas is provided at a predetermined height position.
  • the lowermost condensing chamber 22 is provided with a gas outlet 2a at a predetermined height.
  • the inlet 1a and the outlet 2a are communicated with each other through a connection pipe (not shown).
  • a blower 4 as gas forming means is interposed in the connecting pipe, and gas is pumped from the blower 4 toward the inlet 1a.
  • the blower 4 only needs to be able to supply a gas such as air at a predetermined flow rate and flow velocity.
  • blower 4 since the blower 4 flows a gas flow to one direction, a single blower may be sufficient, and since it arrange
  • each outflow portion 9c is an overflow drain cylinder, and allows the condensate to be discharged to the lower condensing chamber side by overflow when the condensate accumulated in the condensing chamber reaches a predetermined height.
  • the spray means 6 includes a first spray means 6a that is provided in the uppermost evaporation chamber 10 and sprays the heated seawater a that is sent from the external raw solution heating section H via the pipe b1, and other than the uppermost stage.
  • the concentrated liquid 10a is provided in the evaporation chambers 11 and 12 and sent from the uppermost evaporation chamber 10 via the pump P and the piping b2, or sent from the middle evaporation chamber 11 via the pump P and the piping b2.
  • Each of the spraying means 6a to 6c uses a spray nozzle that sprays the target liquid in the form of droplets or sprays, and enables stable mist formation with the spray nozzle.
  • the spray nozzle is preferably a full-surface shower and a structure that does not easily cause clogging, for example, a nozzle type called “NOZZLES”.
  • the nozzle configuration is preferably a type in which the evaporation chamber side nozzle is less likely to be clogged because the possibility of clogging is high, but the condensation chamber side nozzle is preferably a nozzle type in which particles are finer than the evaporation chamber because of a low possibility of clogging.
  • the nozzle installation position may be a position where the spray liquid and the gas flow are in sufficient contact, and the nozzle spray direction may be parallel flow, counter flow, or alternating current with respect to the gas flow direction.
  • the undiluted seawater a is supplied to the undiluted solution heating section H via a pump P and a pipe b.
  • the liquid-liquid heat exchanger 5 includes a pipe b3 connecting the corresponding part of the pipe b, the third injection means 6c in the condensation chamber 20 and the lower side in the condensation chamber 20, and the first in the condensation chamber 21.
  • a pipe b3 connecting the third injection means 6c and the lower side in the condensation chamber 21; a pipe b3 connecting the third injection means 6c in the condensation chamber 22 and the lower side in the condensation chamber 22; Are intervened between each.
  • the liquid temperature gradually decreases in the order of the condensate 20a accumulated in the condensation chamber 20, the condensate 21a accumulated in the condensing chamber 21, and the condensate 22a accumulated in the condensing chamber 22.
  • Seawater a is supplied to the concentrate heating unit H via the pump P and the pipe b, and the liquid-liquid heat exchanger 5 is exchanged between the seawater a and the condensate 22a accumulated in the lowest condensation chamber 22 having the lowest liquid temperature. Is heated through the liquid-liquid heat exchanger 5 between the condensate 21a accumulated in the middle-stage condensing chamber 21 that is slightly higher than the previous liquid temperature, and finally the uppermost liquid having the highest liquid temperature.
  • stock solution heating part H is an example which heats the seawater a to predetermined temperature (for example, about 90 degreeC) using a solar heat, it may be other than a solar heat.
  • the undiluted solution is heated using a heater. From the viewpoint of energy saving, the undiluted solution is heated using low-temperature exhaust heat of about 120 to 150 ° C discharged from the factory.
  • the condensate 22a accumulated in the lowermost condensing chamber 22 can be discharged as a product (fresh water) from a part of the pipe b3 connected to the injection means 6c.
  • the above evaporation concentration / condensation apparatus heats seawater a, vaporizes a part of the solvent in the evaporation chamber and processes it into a concentrated liquid, and guides the vaporized vapor to the condensation chamber. It is suitable for the evaporative concentration / condensation method in which the condensed liquid is processed. That is, as the evaporation concentration / condensation method, seawater a is supplied to the stock solution heating unit H via the pump P and the pipe b. In this case, the seawater a passes through the plurality of liquid-liquid heat exchangers 5 provided outside the tower 7 corresponding to the respective condensation chambers 20 to 22 in the process of being supplied to the stock solution heating unit H as described above.
  • the condensate 20 a in the condensing chamber 22, the condensate 21 a in the condensing chamber 21, and the condensate 22 a in the condensing chamber 22 are heated to a predetermined temperature.
  • the seawater a heated to a predetermined temperature by the stock solution heating unit H is sent from the pipe b1 and injected from the first injection means 6a provided in the uppermost evaporation chamber 10.
  • the blower 4 is driven in advance.
  • generated gas flow is the uppermost condensation chamber 20 which adjoins via the demister 3 from the uppermost evaporation chamber 10, the middle-stage evaporation chamber 11 from the condensation chamber 20 via the demister 3, and its evaporation.
  • the heated seawater a When the heated seawater a is jetted in a liquid or spray form from the first jetting means 6a, it is brought into gas-liquid contact with the gas of the gas stream, and a part of water which is a solvent is vaporized. However, the remainder is stored as a concentrated liquid 10 a below the evaporation chamber 10.
  • the vaporized vapor is accompanied by the gas flow and is adjacent to the uppermost condensing chamber 20 from the uppermost evaporating chamber 10 via the demister 3, and the middle evaporating chamber from the condensing chamber 20 via the demister 3. 11.
  • the chamber 22 is discharged in one direction.
  • the concentrated liquid 10a accumulated in the upper evaporation chamber 10 in the middle evaporation chamber 11 is ejected from the second ejection means 6b in a liquid or spray form, it is brought into gas-liquid contact with the gas in the gas flow. While the portion vaporizes part of the water as a solvent, the remainder is stored as a concentrated liquid 11 a below the evaporation chamber 11.
  • the concentrated liquid 11a accumulated in the middle evaporation chamber 11 in the lowermost evaporation chamber 12 is jetted in a liquid or spray form from the second jetting means 6b, it comes into gas-liquid contact with the gas of the gas flow, and a part thereof While part of the water, which is the solvent, is vaporized, the remainder is stored as a concentrated liquid 12 a below the evaporation chamber 12.
  • the condensates 20a, 21a, and 22a accumulated in the corresponding condensing chambers are ejected from the third ejecting means 6c in a liquid or spray form in the respective condensing chambers 20, 21, and 22, respectively.
  • the liquid is brought into contact with each other, while a part of the water, which is a solvent, is vaporized, and the rest is stored as condensate 20a, 21a, 22a below the condensing chambers 20, 21, 22 respectively.
  • the condensate 22a collected in the lowermost condensing chamber 22 is the freshest pure water.
  • the multistage evaporative concentration / condensing apparatus shown in FIG. 2 is an example in which the first injection means 6a and the second injection means 6b and the related parts (the piping b2 and the pump P) in FIG. 1 are changed.
  • the injection means 60 is composed of rotating blades 61a and 61b that turn the heated seawater a and the concentrated liquids 10a and 11a supplied by being rotated by the motor M into droplets or sprays by centrifugal force.
  • the uppermost evaporation chamber 10 and the middle evaporation chamber 11 are communicated with each other via an outflow portion 9d provided on the bottom wall 9a of the evaporation chamber 10.
  • the middle evaporating chamber 11 and the lowermost evaporating chamber 12 communicate with each other via an outflow portion 9 d provided on the bottom wall 9 a of the evaporating chamber 11.
  • Each outflow portion 9d is an overflow drain tube provided on a coaxial line, and when the concentrated liquid accumulated in the evaporation chamber reaches a predetermined height, the concentrated liquid can be discharged to the lower evaporation chamber side by overflow. .
  • the motor M is installed on the upper wall of the tower 7 directly above the outflow part 9d, and rotates the shaft 62 connected to the output part.
  • the shaft 62 is inserted from the outflow portion 9 d of the evaporation chamber 10 to the lowermost evaporation chamber 12 through the outflow portion 9 d of the evaporation chamber 11.
  • the rotating blade 61 a in the evaporation chamber 10 that makes the heated seawater a sent from the stock solution heating part H through the pipe b 1 suitable for liquid or sprayed, and the outflow of the evaporation chamber 10
  • the rotary blade 61b in the evaporation chamber 11 that makes the concentrated liquid 10a discharged from the section 9d suitable or sprayed, and the evaporation that makes the concentrated liquid 11a discharged from the outflow part 9d of the evaporation chamber 11 liquid suitable or sprayed
  • a rotating blade 61b in the chamber 12 is mounted. In such a configuration, an optimum mist can be achieved by controlling the rotational speed of the rotor blades 61a and 61b via the motor M.
  • the above-described rotary blades only need to be able to mist the liquid by centrifugal force, and the blade shape, blade shape, etc. are arbitrary.
  • Modification 2 The multistage evaporative concentration / condensing apparatus shown in FIG. 3 increases the number of evaporation chambers constituting the evaporation processing unit 1 and the condensation processing unit 2 of FIG. This is an example in which the first injection means 6a, the second injection means 6b, the third injection means 6c, and the related parts (the piping b2 and the pump P) are changed in the same way as in the first modification.
  • the evaporation processing unit 1 is provided with a plurality of (three in this example) bottom walls 9a between the corresponding inner peripheral surface of the tower 7 and the partition wall 8 so as to be parallel to each other with a space therebetween. 13 is formed in a stacked state.
  • the concentrated liquid 13a accumulated in the lowest evaporation chamber 13 can be discharged as the most concentrated liquid (concentrated salt water).
  • the condensation processing unit 2 moves the condensation chambers 20 to 23 up and down by providing a plurality (three in this example) of bottom walls 9b parallel to each other between the corresponding inner peripheral surface of the tower 7 and the partition wall 8. It is formed in a laminated state. Also in this case, the evaporation chambers 10 to 13 and the condensation chambers 20 to 23 are shifted up and down by a predetermined dimension.
  • the jetting means 60A is composed of rotating blades 61a and 61b that turn the heated seawater a and the concentrated liquids 10a, 11a, and 12a supplied by being rotated by the motor M into droplets or sprays by centrifugal force.
  • the ejecting means 60B is composed of a rotating blade 61c that makes the condensate 20a, 21a, 22a, 23a rotated and supplied by the motor M into droplets or sprays by centrifugal force.
  • the uppermost evaporation chamber 10 and the third evaporation chamber 11 are communicated with each other via an outflow portion 9 d provided on the bottom wall 9 a of the evaporation chamber 10.
  • the third-stage evaporation chamber 11 and the second-stage evaporation chamber 12 communicate with each other via an outflow portion 9 d provided on the bottom wall 9 a of the evaporation chamber 11.
  • the second-stage evaporation chamber 12 and the lowermost evaporation chamber 13 are in communication with each other via an outflow portion 9 d provided on the bottom wall 9 a of the evaporation chamber 12.
  • Each outflow portion 9d is an overflow drain tube provided on a coaxial line, and when the concentrated liquid accumulated in the evaporation chamber reaches a predetermined height, the concentrated liquid can be discharged to the evaporation chamber side immediately below by overflow.
  • the motor M is installed on the upper wall of the tower 7 just above the outflow part 9d, and rotates the shaft 62 connected to the output part. The shaft 62 is inserted from the outflow portion 9 d of the evaporation chamber 10 to the lowermost evaporation chamber 13 through the outflow portion 9 d of the evaporation chamber 12.
  • the rotating blade 61 a in the evaporation chamber 10 that makes the heated seawater a sent from the stock solution heating part H through the pipe b 1 suitable for liquid or sprayed, and the outflow of the evaporation chamber 10
  • the rotary blade 61b in the evaporation chamber 11 that makes the concentrated liquid 10a discharged from the section 9d suitable or sprayed, and the evaporation that makes the concentrated liquid 11a discharged from the outflow part 9d of the evaporation chamber 11 liquid suitable or sprayed
  • a rotating blade 61b in the chamber 12 and a rotating blade 61b in the evaporation chamber 13 that makes the concentrated liquid 12a discharged from the outflow portion 9d of the evaporation chamber 12 suitable for liquid or spraying are mounted.
  • the uppermost condensing chamber 20 and the third condensing chamber 21 communicate with each other via an outflow portion 9e provided on the bottom wall 9b of the condensing chamber 20.
  • the third-stage condensing chamber 21 and the second-stage condensing chamber 22 communicate with each other via an outflow portion 9e provided on the bottom wall 9b of the condensing chamber 21.
  • the second-stage condensing chamber 22 and the lowermost condensing chamber 23 communicate with each other via an outflow portion 9 e provided on the bottom wall 9 e of the condensing chamber 22.
  • Each outflow portion 9e is an overflow drain tube provided on a coaxial line, and allows the condensate to be discharged into the condensing chamber directly below by overflow when the condensate accumulated in the condensing chamber reaches a predetermined height.
  • the motor M is installed on the upper wall of the tower 7 just above the outflow part 9e, and rotates the shaft 62 connected to the output part. The shaft 62 is inserted from the outflow portion 9e of the condensing chamber 20 through the outflow portion 9e of the condensing chamber 22 to the lowermost condensing chamber 23.
  • the rotating blade 61c in the condensing chamber 20 that makes the condensate 20a sent through the pump P and the pipe b3 suitable or sprayed, and the pump P and the pipe b3 are sent.
  • the inner rotor blade 61c and the rotor blade 61c in the condensing chamber 23 for making the condensate 23a sent through the pump P and the pipe b3 suitable for liquid or spraying are mounted. Although not shown, it is possible to provide a filler in the evaporation chamber or the condensation chamber.
  • the usefulness of the above multi-stage evaporative concentration / condensing device will be clarified by examples.
  • this embodiment as an evaporation concentration / condensation method in which the stock solution is heated, a part of the solvent is vaporized in the evaporation chamber and processed into a concentrated liquid, and the vaporized vapor is led to the condensation chamber and processed into the condensed liquid.
  • the stock solution as a simulated seawater for easy determination by visual inspection, a commercially available ink is added to tap water, and black ink having a concentration of 0.1 wt% is used. did. The black water was kept in a storage tank at a temperature of 17 ° C.
  • the tower 7A is a square tank made of heat-resistant PVC and having a size of 1 m in length, 1 m in width, and 2 m in height.
  • the stock solution heating unit H used a 30 kW electric heater made by Tobaden.
  • Each pump P was a 0.15 kW centrifugal pump manufactured by Sugawara.
  • the blower 4 was a 2.2 kW centrifugal blower manufactured by Muto Electric.
  • D As the spray nozzles (spraying means) 6a to 6c, the AJP series made by Ikeuchi was used as a type that is not easily clogged.
  • E As the heat exchanger 5, a plate heat exchanger manufactured by Hisaka Manufacturing Co., Ltd. was used (heat transfer area 2 m 2 ).
  • the black water in the storage tank is supplied at a flow rate of 15 L / min by the lowermost pump P in FIG. 4, heated by a heater, supplied as 89 ° C. black water, and the nozzle of the evaporation chamber 10.
  • an air flow was circulated from the blower 4.
  • the circulating air was set to 288 kg / day in the blower 4.
  • the lowermost evaporating chamber 12 flows out from the evaporating chamber 12 through the demister 3 to the lowermost condensing chamber 22 in one direction.
  • the nozzles 6b of the respective evaporation chambers 11 and 12 are evaporated by spraying the concentrated liquids 10a and 11a accumulated in the upper evaporation chamber 10 and 11, and the respective nozzles 6c are condensed in the condensing chambers 20-22.
  • the condensate accumulated in the chambers 20 to 22 is sprayed and condensed by cooling.
  • the supply liquid of the concentrated liquid 10a in the upper evaporation chamber 10 is supplied to the nozzle 6b in the middle evaporation chamber 11 so that the supply amount becomes 16.5 L / min.
  • the supply of the condensate 20a in the condensing chamber 21 was controlled so that the supply amount was 16.5 L / min.
  • the temperature of each chamber was stabilized at 56 ° C for the evaporation chamber 11, 46 ° C for the evaporation chamber 12, 65 ° C for the condensation chamber 20, and 57 ° C for the condensation chamber 21, respectively.
  • the quantity used as 1028L / day was taken as condensed water (fresh water). This amount was a yield of 5% based on the supplied water.
  • the condensed water was transparent so that the difference was not visually recognized compared with the tap water used for the stock solution, and there was no ink odor.
  • Evaporation processing part (1a is an inlet, 9a is a bottom wall, 10 to 13 are evaporation chambers) 2 ... Condensation processing part (2a is outlet, 9b is bottom wall, 20-23 is condensing chamber) 3 ... Demister 4 ... Blower (gas forming means) 5 ... Liquid-liquid heat exchanger 6 ... Injection means (6a to 6c are first to third injection means) 9c-9e ... Outflow part 10a-13a ... Concentrate 20a-23a ... Condensate b1-b3 ... Pipe 60, 60A, 60B ... Injection means (61a-61c are rotor blades) H ... Stock solution heating section

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)

Abstract

L'appareil d'évaporation-épaississement/condensation multi-étage ci-décrit permet notamment d'améliorer le rendement de gazéification, le rendement de condensation et d'économiser facilement de l'énergie. L'appareil chauffe une solution mère pour gazéifier ainsi une partie d'un solvant et obtenir un liquide épaissi dans une chambre d'évaporation et pour convertir la vapeur gazéifiée en liquide condensé dans une chambre de condensation. L'appareil est caractérisé en ce qu'il comprend : une unité de traitement d'évaporation (1) comprenant plusieurs chambres d'évaporation (11-12) empilées verticalement ; une unité de traitement de condensation (2) placée de manière à faire face à l'unité de traitement d'évaporation et comprenant plusieurs chambres de condensation (20-22) empilées verticalement de façon à être individuellement déplacées par des dimensions prédéterminées par rapport aux chambres d'évaporation individuelles ; des dispositifs antibuée (3) placés de manière à faire communiquer ensemble les chambres d'évaporation adjacentes et les chambres de condensation ; un moyen pour former un écoulement gazeux (4) pour faire circuler un écoulement gazeux par les dispositifs antibuée (3) depuis la chambre d'évaporation (10) à l'étage le plus élevé jusqu'à la chambre de condensation (22) à l'étage le plus bas ; des échangeurs thermiques liquide-liquide (5) pour échanger de la chaleur entre une solution mère (a) et le liquide condensé s'accumulant dans les chambres de condensation et chauffer ainsi la solution mère (a) ; et un moyen d'injection (6) pour convertir la solution mère, le liquide épaissi et le liquide condensé en gouttelettes liquides ou en brouillard.
PCT/JP2009/004440 2008-09-09 2009-09-08 Appareil et procédé d'évaporation-épaississement/condensation multi-étage WO2010029723A1 (fr)

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WO2011137149A1 (fr) * 2010-04-30 2011-11-03 Sunlight Photonics Inc. Système de dessalement solaire hybride
WO2013154011A1 (fr) 2012-04-10 2013-10-17 合同会社 矢部学術振興会 Dispositif de traitement de l'eau
WO2017069031A1 (fr) * 2015-10-23 2017-04-27 株式会社シーアイピーソフト Dispositif de traitement d'eau
CN109641762A (zh) * 2016-07-29 2019-04-16 西门子股份公司 用于从被污染的原水中分离产品水的设备和用于运行所述设备的方法
JP2019209249A (ja) * 2018-06-04 2019-12-12 オルガノ株式会社 発電設備用の蒸発濃縮装置及び方法ならびに発電設備

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JPS58124580A (ja) * 1982-01-20 1983-07-25 Hitachi Zosen Corp 造水方法
US5096543A (en) * 1990-09-27 1992-03-17 Kamyr, Inc. Carrier gas apparatus for evaporation and condensation

Patent Citations (2)

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Publication number Priority date Publication date Assignee Title
JPS58124580A (ja) * 1982-01-20 1983-07-25 Hitachi Zosen Corp 造水方法
US5096543A (en) * 1990-09-27 1992-03-17 Kamyr, Inc. Carrier gas apparatus for evaporation and condensation

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9834454B2 (en) 2010-04-30 2017-12-05 Sunlight Photonics Inc. Hybrid solar desalination system
US10538435B2 (en) 2010-04-30 2020-01-21 Sunlight Aerospace Inc. Solar desalination system employing a humidification-dehumidification process
US9834455B2 (en) 2010-04-30 2017-12-05 Sunlight Photonics Inc. Solar desalination system employing a humidification-dehumidification process
WO2011137149A1 (fr) * 2010-04-30 2011-11-03 Sunlight Photonics Inc. Système de dessalement solaire hybride
EP2837601A4 (fr) * 2012-04-10 2015-12-23 Yts Science Properties Pte Ltd Dispositif de traitement de l'eau
CN104245593A (zh) * 2012-04-10 2014-12-24 Yts科学财富私人有限公司 水处理装置
US10029923B2 (en) 2012-04-10 2018-07-24 Mgr Energy Llp Water treatment device
WO2013154011A1 (fr) 2012-04-10 2013-10-17 合同会社 矢部学術振興会 Dispositif de traitement de l'eau
JPWO2017069031A1 (ja) * 2015-10-23 2017-10-19 株式会社シーアイピーソフト 水処理装置
WO2017069031A1 (fr) * 2015-10-23 2017-04-27 株式会社シーアイピーソフト Dispositif de traitement d'eau
CN109641762A (zh) * 2016-07-29 2019-04-16 西门子股份公司 用于从被污染的原水中分离产品水的设备和用于运行所述设备的方法
JP2019209249A (ja) * 2018-06-04 2019-12-12 オルガノ株式会社 発電設備用の蒸発濃縮装置及び方法ならびに発電設備
JP7079151B2 (ja) 2018-06-04 2022-06-01 オルガノ株式会社 発電設備用の蒸発濃縮装置及び方法ならびに発電設備

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