EP3837031A1 - Solarbetriebener kontinuierlicher destillator mit effizienter wärmerückgewinnung - Google Patents

Solarbetriebener kontinuierlicher destillator mit effizienter wärmerückgewinnung

Info

Publication number
EP3837031A1
EP3837031A1 EP19798522.9A EP19798522A EP3837031A1 EP 3837031 A1 EP3837031 A1 EP 3837031A1 EP 19798522 A EP19798522 A EP 19798522A EP 3837031 A1 EP3837031 A1 EP 3837031A1
Authority
EP
European Patent Office
Prior art keywords
starting liquid
container
optionally
distillator
containers
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
EP19798522.9A
Other languages
German (de)
English (en)
French (fr)
Inventor
Matthias Budil
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Watertransformer GmbH
Original Assignee
Watertransformer GmbH
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 Watertransformer GmbH filed Critical Watertransformer GmbH
Publication of EP3837031A1 publication Critical patent/EP3837031A1/de
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/28Evaporating with vapour compression
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/0011Heating features
    • B01D1/0029Use of radiation
    • B01D1/0035Solar energy
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/28Evaporating with vapour compression
    • B01D1/284Special features relating to the compressed vapour
    • B01D1/2843The compressed vapour is divided in at least two streams
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/28Evaporating with vapour compression
    • B01D1/2881Compression specifications (e.g. pressure, temperature, processes)
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/28Evaporating with vapour compression
    • B01D1/2887The compressor is integrated in the evaporation apparatus
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/28Evaporating with vapour compression
    • B01D1/289Compressor features (e.g. constructions, details, cooling, lubrication, driving systems)
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/28Evaporating with vapour compression
    • B01D1/2896Control, regulation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/30Accessories for evaporators ; Constructional details thereof
    • B01D1/305Demister (vapour-liquid separation)
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D3/00Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/02Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping in boilers or stills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D3/00Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/10Vacuum distillation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D5/00Condensation of vapours; Recovering volatile solvents by condensation
    • B01D5/0057Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes
    • B01D5/006Condensation of vapours; Recovering volatile solvents by condensation in combination with other processes with evaporation or distillation
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/041Treatment of water, waste water, or sewage by heating by distillation or evaporation by means of vapour compression
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/14Treatment of water, waste water, or sewage by heating by distillation or evaporation using solar energy
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/28Treatment of water, waste water, or sewage by sorption
    • C02F1/283Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/34Treatment of water, waste water, or sewage with mechanical oscillations
    • C02F1/36Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/44Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/08Seawater, e.g. for desalination
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/20Prevention of biofouling
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00Specific treatment goals
    • C02F2303/22Eliminating or preventing deposits, scale removal, scale prevention
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/124Water desalination
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/212Solar-powered wastewater sewage treatment, e.g. spray evaporation
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse 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

Definitions

  • the invention relates to a distillator which uses a solar energy
  • Distillation is an effective way to remove or reduce the concentration of solutes in liquids.
  • An essential application is the extraction of fresh water from salt water and the production of bioethanol.
  • the liquid has to be evaporated and the resulting steam has to be condensed again.
  • the evaporation of liquids is a very energy-intensive process.
  • effective and inexpensive energy sources and heat recovery are essential in distillation applications.
  • Distillation plants are known which use solar energy for the evaporation process. Distillation plants are also known, in which heat pumps are used for heat recovery. Mechanical vapor compression compresses the vapor (vapor), which increases the condensation temperature so that this vapor condenses on a surface that is in thermal contact with the starting liquid and thus the enthalpy of vaporization contained therein is returned to the starting liquid. It must be taken into account that a liquid in which substances are dissolved has a higher boiling temperature than the pure liquid. Sea water boils at a temperature that is about 1 ° C higher than that of fresh water. It is essential that the container of the liquid to be distilled and the container containing the compressed vapor are in good thermal contact and the whole arrangement is thermally well insulated from the environment. For thermal insulation, double-walled vacuum-insulated borosilicate glass tubes have proven themselves millions of times and can be produced cheaply. They are used as solar collectors for hot water generation and withstand particularly harsh environmental conditions, e.g. Hailstorm.
  • the invention is based on the object of producing as much distillate as possible based on the power available and the systems invested.
  • the invention achieves this object in that a container which contains the starting liquid and a container in which the distillate collects are part of a distillator, these containers being in thermal contact and a compressor the steam generated by boiling the Starting liquid is created by concentration of solar energy and / or by suppressing, compressed in the distillate container so that this vapor condenses there and the evaporation enthalpy and thermal energy via the thermal contact to the
  • Starting liquid is recycled, which container a circular or a different, e.g. have oval, elliptical, triangular or polygonal, cross section and the surface of which is optionally corrugated and / or carries ribs around the
  • Fig. 1 Distill ator (1), which is irradiated by sunlight (2), in which a container (3) is present, which contains the starting liquid (4), there with a container (5) in
  • the distillate (6) collects, a compressor (7) compressing the steam which is produced by boiling the starting liquid (4) into the distillate container (5), and in which a feed line (8) and a discharge line (9) for the starting liquid and a discharge line for the distillate (10) are present, optionally a vacuum pump (11) being present which generates a negative pressure in the container (3) containing the starting liquid (4).
  • Fig. 2 Variant A of the distillator (1), in which a container (3) containing the starting liquid (4) is located in a container (5) containing the distillate (6) and the steam that by evaporation of the starting liquid (4) using the energy of sunlight (2) and compressed by a compressor (7), and in which a feed line (8) and a discharge line (9) for the starting liquid (4) and a discharge line (10) for the distillate (6) are present.
  • Fig. 3 Cross section of variant A through the starting liquid (4), which is in a container (3), which is irradiated by sunlight (2), and which is in the container (5) for the distillate.
  • Fig. 4 Variant B of the distillator (1), in which in the container (3), the
  • a container (5) which contains the distillate (6) and the steam, which by evaporation of the starting liquid (4) using the energy of
  • Sunlight (2) arises and is compressed by a compressor (7), and in which a feed line (8) and a discharge line (9) for the starting liquid (4) and a discharge line (10) for the distillate (6) are present.
  • Fig. 5 Cross section of variant B through the starting liquid (4), which is in a container
  • Fig. 6 Variant C of the distillator (1), in which there is a container (3) containing the starting liquid
  • (4) contains, via a membrane or contact surface (12), in thermal contact with a container (5) which contains the distillate (6) and the steam, which is produced by evaporation of the starting liquid (4) with the help of the energy of sunlight (2) arises and is compressed by a compressor (7), and in which a feed line (8) and a discharge line (9) for the starting liquid (4) and a discharge line (10) for the distillate (6) are present.
  • Contact surface (12) is in thermal contact with a container (5) for the distillate.
  • Fig. 8 The distiller (1) is located in a double-walled translucent evacuated tube (13), the outer tube (14) and the inner tube (15) are translucent and a sun radiation absorbing layer on the surface (16) or a part the surface (16) of the distillator (1) is present.
  • a heat exchanger (17) is located inside the double-walled evacuated tube (13).
  • Fig. 9 The distiller (1) in a double-walled evacuated tube (13), wherein the outer tube (14) is translucent and the inner tube (15) is translucent (variant A) or opaque (variants B and C), as Container for the starting liquid and / or the distillate is used and carries a layer absorbing solar radiation (variants B and C).
  • a heat exchanger (17) is located inside the double-walled evacuated tube (13).
  • Fig. 10 Distiller (1) with an electronic control (18) and control or signal lines (19), which is irradiated by sunlight (2), in which a container (3) is present, which contains the starting liquid (4) contains, there is in thermal contact with a container (5) in which the distillate (6) collects, a compressor (7) compressing the steam which is produced by boiling the starting liquid (4) into the distillate container (5) , and in which a feed line (8) and a discharge line (9) for the starting liquid and a discharge line (10) for the distillate are present. There is one in the container (3) for the starting liquid (4)
  • the electronic control unit (18) controls a pump (22) which conveys the starting liquid (4) into the container (3) and a valve (23) which controls the outflow of the starting liquid
  • Filter (24) removes or reduces the steam in the
  • a level measurement (25) is present in the container (5) for the distillate (6), and a valve (26) in the discharge line (10) is controlled so that the level of the liquid distillate (6) is above the discharge line (10 ) stands so that no steam can escape.
  • Fig. 11 The distillator (1), shown from the side, is inclined and oriented essentially normal to the sunlight.
  • the arrangement of the distillator (1) and parabolic trough mirror (27) is held in position by a frame (28), part of this frame (28) being formed by a tube (29) in a “D” shape.
  • Fig. 12 The distillator (1), shown from the front, is inclined and oriented essentially normal to the sun.
  • the arrangement of the distillator (1) and parabolic trough mirror (27) is held in position by a frame (28), part of this frame (28) being formed by a tube (29) in a “D” shape.
  • the distillator (1) is illuminated by the parabolic trough mirror (27) with solar radiation (2).
  • Fig. 13 A parabolic trough mirror (27), in the focal line of which is the distiller (1), is fastened horizontally and rotatably.
  • the distillator is bent upwards at one end (30) so that the starting liquid and the distillate do not flow into the compressor or into the turbine and bent downwards at the other end (31) so that the distillate can be drawn off there.
  • the distiller (1) is constructed as a solar tower (32) and surrounded by mirrors (33) which direct the solar radiation (2) onto the solar tower (32). Depending on the topography of the
  • Fig. 15 Variant A of the distillator (1) in cross section along the central axis, in which a container (3) containing the starting liquid (4) is located in a container (5) which contains the distillate (6) and contains the steam, which is generated by evaporation of the starting liquid (4) with the help of the energy of sunlight (2), with a radial compressor turbine (35), the steam (36, small arrows) being compressed from the inside out and into the area is passed above (37) and below (38) the compressor. Above the compressor (35) there is a radial turbine (39) which is driven by the steam (36, small arrows) and which drives the compressor (35) via an axis (40), the steam (36, small arrows) ) flows from outside to inside.
  • Fig. 16 Variant B of the distillator (1) in cross section along the central axis, in which there is a container (5) in the container (3) containing the starting liquid (4), which contains the distillate (6) and contains the steam, which is generated by evaporation of the starting liquid (4) with the help of the energy of sunlight (2), with an axial compressor turbine (41). Above the compressor (41) is a radial turbine (39) which is driven by the steam (36, small arrows) and which drives the compressor (41) via an axis (40), the steam (36, small arrows) ) flows from outside to inside.
  • a feed line (8) and a discharge line (9) for the starting liquid (4) and a discharge line (10) for the distillate (6) are provided.
  • Sunlight (2) arises with a root compressor (42).
  • the root compressor (42) is driven by an electric motor (43) and compresses the steam (36, small arrows) from the left container (3) into the right container (5).
  • a feed line (8) and a discharge line (9) for the starting liquid (4) and a discharge line (10) for the distillate (6) are provided.
  • Fig. 18 Variant C of the distiller (1) in cross-section through the root compressor (42) normal to the central axis.
  • the root compressor (42) compresses the steam (36, small arrows).
  • the light from the sun (2) hits the outer container (3) which contains the starting liquid.
  • a container (3), which contains the starting liquid (4) is in thermal contact with a container (5), which contains the distillate, via a membrane or contact surface (12) (6) and contains the steam, the steam being generated by evaporation of the starting liquid (4) with the aid of the energy of sunlight and being compressed by a compressor so that it condenses on the membrane or contact surface (12) and on the starting liquid container (3 ) the inherent thermal enthalpy of vaporization and thermal energy is transferred to the heat
  • Output liquid (4) attributable In this case, the radiation from the sun (2) hits the source liquid container, and the distillator (1) can be rotated so that only the source liquid container is illuminated, or both types of containers (3, 5) are hit, whereby the solar energy is transferred to the starting liquid container by heat conduction.
  • the starting liquid (4) is continuously fed (8) and discharged (9) in all three variants (1), and the inflow and outflow amount are regulated so that the level of the starting liquid (4) remains in a certain range and the Source liquid maintains liquid consistency.
  • the distillate (6) is continuously discharged (10) and the discharge amount is regulated so that the level of the distillate is above the discharge line (s) (10) so that no steam can escape.
  • the regulation can be done manually or automatically (e.g. electronically and / or mechanically).
  • Sight glasses can be provided to support the dog's regulation in order to make the level (s) (4, 6) visible.
  • sensors are available that transmit the level to the control in order to generate a control signal for valves and pumps.
  • Heat exchangers are present which allow the starting liquid to flow in as hotly as possible by supplying the heat of the outflowing starting liquid (9), the distillation residue and / or the outflowing distillate (10) to the starting liquid.
  • the solar energy (2) can be concentrated by using a parabolic trough mirror, a
  • Fresnel mirrors or a Fresnel lens in the focal line of which the distillator is located, or by a large number of mirrors, the distillator then being constructed as a tower, a so-called solar tower, and surrounded by these mirrors, which the
  • the solar energy can also be fed directly to the distillator, in which case a vacuum pump (11) preferably generates negative pressure or the device is operated at high altitudes in order to lower the boiling temperature.
  • the Containers of the distillator can also deviate from the circular cross section and have, for example, an oval, elliptical, triangular or polygonal cross section.
  • the surface can be corrugated and / or wear ribs to improve heat transfer and
  • the invention can be improved by the distillator (1) being surrounded by a double-walled tube (13) which is evacuated like a thermos bottle and at least the outer tube (14) is translucent.
  • both tubes (14, 15) must be translucent.
  • the outer tube (14) must be translucent and the inner tube can be translucent (15) or coated with a sun-ray-absorbing layer (e.g. TiNox), which then serves as a container for the starting liquid (Fig. 9).
  • a sun-ray-absorbing layer e.g. TiNox
  • the solar radiation absorbing layer is on the surface (16) or part of the surface (16) of the distillator (1).
  • the translucent tubes preferably have layers that reduce the reflection of solar radiation (2) and reflect the infrared radiation of the distillator. Outside the area where the sun's rays hit, the double-walled tube can be mirrored like a Dewar vessel, for the better
  • heat exchangers (17) which allow the starting liquid to flow in as hotly as possible, then it is essential that they are thermally well insulated from the environment. Heat exchangers (17) are isolated particularly efficiently if they are located within the double-walled evacuated tube, above and / or below the containers for the starting liquid and the distillate. In addition, one or more Peltier elements can also be present in the heat exchangers which, with the aid of the Seebeck effect, supply electrical current for the operation of the device according to the invention.
  • Corrosion-resistant metals and / or plastics are preferably used as the material of the distillator. These can also be surface treated to prevent delayed boiling or to promote condensation. Plastics are not as thermally conductive as metals. If, however, a double-walled evacuated outer tube is used, the distillator is largely thermally insulated from the surroundings, and a higher temperature gradient insignificantly lowers the efficiency. The advantage of plastics is that they are cheaper and lighter than metals.
  • a decisive advantage of the invention is that the distillator has a large diameter compared to other solar systems, which focus the sun rays much more on thinner tubes in which a liquid flows that dissipates the heat. The distillator (1) even needs a larger diameter, because otherwise the boiling starting liquid (4) would spray out of the container (3) for the starting liquid due to the steam generated. Due to the large diameter, less focusing is required compared to
  • the parabolic trough mirror does not have to have an exact parabolic shape and inflatable, foldable, open or collapsible mirrors can also be used.
  • Distillator diameters can also include filters, e.g. Activated carbon filters, microfilters, ultrafilters and / or nanofilters can be installed directly in the distillator, which remove or reduce unwanted impurities present in the vapor of the starting liquid.
  • filters e.g. Activated carbon filters, microfilters, ultrafilters and / or nanofilters can be installed directly in the distillator, which remove or reduce unwanted impurities present in the vapor of the starting liquid.
  • the compressor (7) which serves to compress the steam, can be a
  • Flow compressors e.g. an axial, radial or diagonal turbocompressor
  • Displacement compressors e.g. a rotary compressor, a roots compressor or a
  • Screw compressor a fan or a centrifugal fan.
  • the compressor is driven by a motor, e.g. an electric motor or a Stirling engine, or by a fluid machine, e.g. an axial, radial or diagonal turbine, or by a displacement machine, e.g. a rotary piston machine, which by the steam of the
  • a turbine powered by the vapor of the source liquid can also drive a generator, the electrical current of which then drives the motor of the compressor and for other applications, e.g. Mirror control, pump operation and valve control, is available.
  • a generator can also be driven, which is then used for other applications, e.g. Mirror control, pump operation and valve control, is available and can also be used as a motor, with the performance of the turbine being able to be varied by means of a throttle valve, a waste gate or by changing the geometry.
  • the compressor (7) and, if present, the turbine can also be present more than once and consist of plastic or partly of plastic in order to save production costs.
  • Excess electrical power can flow through heating elements of the source liquid be fed.
  • a gear can be arranged between all devices in order to adapt speeds. If a motor is available, the system can also be operated with negative pressure.
  • FIG. 10 shows the device (1) according to the invention with an electronic control (18) and control or signal lines (19). There is one in the container (3) for the starting liquid
  • Initial liquid gets into the compressor. Evaporation of liquids creates gas bubbles that are able to spray the liquid. The vapor stream can then transport the liquid droplets onward. If necessary, these droplets are protected by a splash guard (21), e.g. a labyrinth, sieve and / or wire mesh through which the steam flows are intercepted before they get into the compressor.
  • the fill level control controls one or more pumps (22) which deliver the starting liquid (4) into the container (3) of the starting liquid, and / or one or more valves (23) which control the outflow of the starting liquid (distillation residue).
  • the aim of the fill level control is to ensure that no liquid gets into the splash guard, an optionally available filter (24) and / or into the compressor and that the distillation residue remains liquid so that it can flow out of the distillator (1).
  • the container (5) for the distillate (6) is one
  • Level measurement (25) is available which, on the one hand, prevents the steam from escaping from the compressor and, on the other hand, that the level of the distillate remains as low as possible, so that the largest possible surface for the condensation of the steam is available.
  • one or more valves (26) in the discharge line or the discharge lines are controlled so that the level of the liquid distillate is above all the discharge lines. All pumps can be replaced by a container, which is located above the distillator and from which gravity and one or more control valves are used
  • the level measurement in both containers can be carried out, for example, with a float, by measuring the electrical conductivity, by capacitive measurement, by optical measurement, by ultrasound measurement or by measurement with microwaves or radar.
  • the level control can be done mechanically and / or electronically.
  • the pressure can be regulated by the power of the drive of the compressor (7). If there is a turbine for driving the compressor, the pressure control can be varied via the power of the turbine by means of a throttle valve, a waste gate or by changing the geometry become. If a filter (24) is installed in the system, it must be taken into account that a pressure drop occurs in the filter. Overpressure can be discharged through one or more pressure relief valves or reduced by swinging out the mirror.
  • Disinfectant and / or rinsing liquids are fed to the distillator.
  • scale can form in the tanks and in the supply and discharge lines
  • Layers e.g. Teflon coated or treated with nanotechnology (e.g. carbon nanotubes).
  • nanotechnology e.g. carbon nanotubes
  • the layers can also improve the corrosion behavior of the container materials.
  • physical methods for cleaning such as To use ultrasound and / or vibrations by using appropriate sound generators e.g.
  • Piezo crystals and / or vibrators are attached to the distillator and to the supply and discharge lines.
  • a so-called pig can be used, a device that is used in pipelines and moves through tubes or tubular containers and checks and cleans the walls.
  • the movement takes place e.g. over ropes and / or racks.
  • Photovoltaic cells the current of which can be used to drive the compressor and / or for other applications, e.g. Mirror control, pump operation and valve control, is available.
  • the advantage of this arrangement is that the efficiency of the photovoltaic cells plays an insignificant role because the waste heat from the photovoltaic cells can be used to evaporate the initial liquid.
  • mirrors concentrate the sun's rays, they work
  • Photovoltaic cells at high temperatures which reduces their efficiency but is increased by the concentrated sunlight.
  • photovoltaic cells can also be attached to other points of the device according to the invention.
  • the distillator (1) can be installed or set up differently for all three variants. These designs can be seen in Fig. 11, 12, 13 and 14 and are as CSP systems
  • the distiller (1) is inclined and oriented essentially normally to the sun's rays (FIGS. 11 and 12).
  • a parabolic trough mirror (27), in the focal line of which is the distiller (1), is rotatably attached.
  • the arrangement of the distillator (1) and parabolic trough mirror (27) is held in position by a frame (28), part of this frame (28) preferably being formed by a tube (29) in “D” shape and this tube optionally is rotated with the parabolic trough mirror.
  • the compressor of the distiller is operated with a turbine by the vapor of the starting liquid, this vapor can be passed into the tube (29) and condensed there, so that this distillate additionally collects there.
  • a condenser can be located in the tube (29) if the steam from the turbine does not completely condense on the tube walls.
  • the capacitor can with the
  • the parabolic trough mirror (27) is automatically or dog-wise adjusted by a drive so that the reflected and focused solar radiation (2) falls on the distiller (1). Furthermore, the parabolic trough mirror (27) is automatically or dog-wise adjusted by a drive so that the reflected and focused solar radiation (2) falls on the distiller (1). Furthermore, the parabolic trough mirror (27) is automatically or dog-wise adjusted by a drive so that the reflected and focused solar radiation (2) falls on the distiller (1). Furthermore, the
  • Elevation angle of the distiller (1) and the parabolic trough mirror (27) can be changed depending on the position of the sun.
  • This design is particularly suitable for detachable and portable versions with optional dog tracking of the mirror.
  • the device according to the invention is constructed modularly. The modular
  • Components are e.g. the distiller (1), the mirror (27), the tube (29) in "D" shape and the frame (28).
  • the mirror (27) can also be designed to be foldable, expandable and / or inflatable.
  • the tube (29) can be further divisible, e.g. to allow cleaning.
  • the frame (28) and the other modules are preferably held together by screw and / or quick fasteners. Due to the inclined arrangement of the distillator, this design is unsuitable for equatorial widths.
  • the distillator (1) is either arranged horizontally, sloping southward in the northern hemisphere of the earth, or sloping northward in the southern hemisphere of the earth (Fig. 13).
  • a parabolic trough mirror (27) in the focal line of which the center of the distiller (1) or the container (3) for the starting liquid is located, is rotatably attached.
  • the distillator is bent upwards at one end (30) so that the starting liquid and the distillate do not flow into the compressor or into the turbine and bent downwards at the other end (31) so that the distillate can be drawn off there.
  • the end (30) of the distiller, in which the compressor is located, which is in the northern hemisphere in the north and in the southern hemisphere in the south, is preferably arranged so that the steam in the distillator is lighter can escape and the solar radiation hits the distillator (1) more intensely than when it is arranged horizontally.
  • the tracking is carried out automatically depending on the time of day by a drive so that the reflected and focused solar radiation (2) falls on the distillator (1) or on the container (3) for the initial liquid.
  • This design can also be used for equatorial latitudes and is suitable for a solar farm power plant with a large number of distillers.
  • the distillator (1) is constructed as a solar tower (32) and surrounded by mirrors (33) (Fig. 14) which direct the sunlight onto the solar tower (32), with each mirror (33) having to be aligned daily and seasonally ,
  • the solar radiation (2) is preferably directed as uniformly as possible onto the tower-shaped distillator through these mirrors (33).
  • the device according to the invention is also suitable as an off-shore installation in one
  • Device according to the invention can be floating, in which case they are then either anchored at the bottom of the water and / or have their own drive to hold the position.
  • the device according to the invention or parts of the device according to the invention can also stand at the bottom of the water and reach over the water surface with the aid of a tower and / or a foundation, it also being possible for several or all parts to be mounted on one or more platforms.
  • the tower (32) can be in the water and / or in the tidal area and there can also be several or all mirrors (33) on land.
  • the invention will be explained in more detail using concrete examples.
  • Compressor turbine (35) the steam (36, small arrows) being compressed from the inside to the outside (outflow) and directed into the area above (37) and below (38) the compressor.
  • the compressed steam There is also the possibility of the compressed steam only in the area below (38) the
  • the axis (40) is made hollow so that this steam can reach the area above (37) of the compressor to drive the turbine (39).
  • the steam can also be passed laterally past the compressor via pipe connections.
  • the compressed vapor condenses on the outer surface of the inner container (3).
  • the arrangement is largely rotationally symmetrical, with the exception of the supply and discharge lines of the liquids.
  • the source liquid is pumped into the middle tank and drained through a valve.
  • the distillate collects in the outer container and is discharged via a valve.
  • Compressor turbine (41) Above the compressor (41) is a radial turbine (39) which is driven by the steam (36, small arrows) and which drives the compressor (41) via an axis (40), the steam (36, small arrows) ) flows from the outside in (inflow).
  • the compressed vapor condenses on the inner surface of the inner container (5).
  • the arrangement is largely rotationally symmetrical, with the exception of the supply and discharge lines of the liquids.
  • the source liquid is pumped into the outer container and drained through a valve.
  • the distillate collects in the middle container and is discharged via a valve.
  • Fig. 17 shows variant C in cross-section along the central axis with a root compressor (42).
  • this variant is normal in cross-section through the roots compressor (42)
  • the compressed steam condenses on the Partition surface (12) of the two containers.
  • the source liquid is pumped into the left tank and drained through a valve.
  • the distillate collects in the right container and is discharged via a valve.
  • the tracking of the mirror or mirrors can be computer-controlled because the position of the sun is well-defined at any point in time on the earth, or it can be done by photocells, e.g. find the brightest point in the sky by forming shadows. In the event of hail and other storms, the mirror can be controlled so that it serves as protection for the distiller.
  • the invention it is possible to build large plants, e.g. the design with horizontal distillator is created in multiple rows or the tower design is large and has many mirrors. If necessary, multiple distillation is also possible with the invention, e.g. for the production of bioethanol by arranging distillers one after the other and the respective distillation residue as
  • Delay in boiling often occurs in distillation processes. Particularly in the case of salt water desalination, smooth surfaces are required in the container (3) of the starting liquid (4) in order to prevent scale and biological deposits which favor the delay in boiling. Delay in boiling is particularly unfavorable in tubular containers because the sudden, uncontrolled boiling of the starting liquid (4) can spill and the system or the distillate can be contaminated.
  • One way of avoiding this is to use boiling stones and / or one or more boiling rods which are placed in the initial liquid container (3). Agitators that stir the starting liquid (4) have also proven their worth.
  • Delay in boiling can also be prevented and / or by introducing air, gas or steam into the starting liquid (4) by the container (3) for the starting liquid (4) made of quartz glass, on the upper or partial surface of which quartz granules are optionally melted.
  • Another method is to sonicate the source liquid container (3) with ultrasound, which not only prevents delayed boiling, but also counteracts scale and biological deposits.
  • the distillate can be treated physically to kill germs, for example by radiation sterilization with UV light, using mercury vapor lamps, light-emitting diodes, lasers and / or gas discharge lamps, which are preferably arranged in the container of the distillate.
  • Pressure and temperature measuring sensors are optionally installed in the device according to the invention, the measuring signal of which is preferably passed on to the electronic control (18) in order to be able to control the boiling of the starting liquid (4) more precisely.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Mechanical Engineering (AREA)
  • Nanotechnology (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
EP19798522.9A 2018-08-17 2019-08-14 Solarbetriebener kontinuierlicher destillator mit effizienter wärmerückgewinnung Pending EP3837031A1 (de)

Applications Claiming Priority (2)

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AT601252018A AT521595A1 (de) 2018-08-17 2018-08-17 Solarbetriebener kontinuierlicher Destillator mit effizienter Wärmerückgewinnung
PCT/AT2019/060258 WO2020033984A1 (de) 2018-08-17 2019-08-14 Solarbetriebener kontinuierlicher destillator mit effizienter wärmerückgewinnung

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AU2019321863B2 (en) 2024-08-15
CL2021000406A1 (es) 2021-09-03
AT521595A1 (de) 2020-03-15
IL280925A (en) 2021-04-29
AU2019321863A1 (en) 2021-04-15
PE20210690A1 (es) 2021-04-12
WO2020033984A4 (de) 2020-05-22
US20210206658A1 (en) 2021-07-08
EA202190549A1 (ru) 2021-04-27
CN112601594A (zh) 2021-04-02
WO2020033984A1 (de) 2020-02-20
MA53233A (fr) 2021-11-24
AT521595B1 (enrdf_load_stackoverflow) 2021-11-15
BR112021002891A2 (pt) 2021-05-11
US11820674B2 (en) 2023-11-21
GEP20227422B (en) 2022-10-10
IL280925B1 (en) 2025-06-01
MX2021001886A (es) 2021-07-16
JOP20210031A1 (ar) 2021-02-17

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