WO1997020606A1 - Procede et dispositif pour purifier l'eau - Google Patents

Procede et dispositif pour purifier l'eau Download PDF

Info

Publication number
WO1997020606A1
WO1997020606A1 PCT/EP1996/005385 EP9605385W WO9720606A1 WO 1997020606 A1 WO1997020606 A1 WO 1997020606A1 EP 9605385 W EP9605385 W EP 9605385W WO 9720606 A1 WO9720606 A1 WO 9720606A1
Authority
WO
WIPO (PCT)
Prior art keywords
steam
water
heat exchanger
liquid phase
concentrated liquid
Prior art date
Application number
PCT/EP1996/005385
Other languages
English (en)
Inventor
Sergio Slossel
Original Assignee
C.I.T. S.R.L.
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 C.I.T. S.R.L. filed Critical C.I.T. S.R.L.
Priority to AU11751/97A priority Critical patent/AU1175197A/en
Publication of WO1997020606A1 publication Critical patent/WO1997020606A1/fr

Links

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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/0082—Regulation; Control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/06—Evaporators with vertical tubes
    • B01D1/12—Evaporators with vertical tubes and forced circulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/28—Evaporating with vapour compression
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/30—Accessories for evaporators ; Constructional details thereof
    • B01D1/305—Demister (vapour-liquid separation)
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D19/00—Degasification of liquids
    • B01D19/02—Foam dispersion or prevention
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
    • B01D3/06—Flash distillation
    • 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
    • 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

Definitions

  • the present invention relates in general to the purification of water and, m particular, relates to the purification of water contained in percolates originating from solid urban waste or from the desalination of sea- water, or of water originating from industrial processes.
  • the object of the present invention is to provide means for purifying the aforementioned waters cheaply and very efficiently.
  • the present invention provides such means by virtue of a method and a device having the specific characteristics recited in the following claims.
  • the invention enables a concentrate and a distillate suitable for advantageous re-use to be produced from the water to be processed.
  • the concentrate can be handled easily whereas the distillate can be discharged into the surface waters after simple treatment by means of an activated-carbon filter or other simple chemico/physical or biological after-treatment.
  • Figure 1 is a schematic view of the structure of a device for purifying water according to the invention.
  • Figure 2 shows a detail indicated II in Figure 1 , on an enlarged scale.
  • the water to be treated is sent to a self-cleaning filter 1 for removing any coarse solids from the water.
  • the water leaving from the filter 1 is sent, by means of pumps 2 and 3, to first and second heat exchangers 4 and 5 which have the function of pre-heating it for introduction into the main circuit of the device.
  • the water thus passes through the cold sides of the heat exchangers 4 and 5, through the hot sides of which the condensate and the concentrate produced by the purification pass, respectively, as will be seen below.
  • the heat exchangers 4 and 5 are usually constituted by plate-type exchangers .
  • the preheated water to be treated is sent through a pipe
  • the pipe 8 connects the upper portion of a heat exchanger 9 to a chamber (drum) 10 in which the at least partial transformation of the water to be treated is completed with the formation of a liquid condensate phase.
  • the heat exchanger 9 may advantageously be of the plate type.
  • the pipe 8 thus feeds both the preheated water to be treated and a fraction of concentrate coming from the heat exchanger 9 to the chamber 10, as will be explained below.
  • the aforementioned mixture emerges from the pipe
  • the vapour phase formed inside the chamber 10 tends to come out of the upper end of the chamber 10, to which a demister element 12, also of known type, is connected.
  • the function of the element 12 is to prevent the steam emerging from the chamber 10 from entraining liquid particles towards a compression stage for mechanically compressing the steam, raising its temperature.
  • the stage in question comprises a compressor 13 which may be a positive-displacement, side-duct, or centrifugal compressor, according to the flow-rates involved and to the characteristics of the fluid treated in the plant.
  • a compressor 13 which may be a positive-displacement, side-duct, or centrifugal compressor, according to the flow-rates involved and to the characteristics of the fluid treated in the plant.
  • the steam compressed by the pump 13 gives up its latent heat to the water circulating on the cold side, and condenses.
  • the condensate is discharged into a discharge device 18 m order to be sent, by means of a pump 19, towards the distillate output line 20 after passing through the hot side of the heat exchanger 4.
  • the condensate coming from the discharger 18 gives up its considerable heat to the water pumped by the pump 2 helping to preheat it before it is introduced into the pipe 7, as already described above.
  • a fraction of the condensate is retained in an auxiliary tank (not shown) to enable the plant to be started up as will be described further below.
  • the concentrated liquid phase which collects in the lower portion of the chamber 10 leaves it through a pipe 21 which branches into two pipes 22 and 23, sending respective portions to the heat exchanger 9 by means of a pump 16 and a pipe 24, and to the hot side of the heat exchanger 5 by means of a pump 25.
  • the pump 25 can draw off the purification concentrate selectively (that is, with a certain flow-rate).
  • a further pipe 27 with a refractometer 29 which continuously monitors the concentration of the product being processed.
  • the refractometer 29 controls the flow-rates of the pumps 25 and 3 by known means, not shown for simplicity, ensuring a modulated discharge of the concentrate and optimal recovery of heat for the incoming product.
  • the desired degree of concentration is adjustable; extraction of the concentrate starts only when a pre-set concentration value is exceeded.
  • the concentrate drawn off by the pump 25 passes into the hot side of the heat exchanger 5 and is sent to the collection zone 30.
  • a small boiler of the instantaneous coil type 40 which sends steam, for example of superheated water, upstream of the heat exchanger 9 until the plant has been brought up to the working temperature (over 100°C).
  • the burner of the boiler 40 may be supplied with, for example, gas oil.
  • the steam is produced with a small portion of the distilled water generated, the boiler being turned off when the running temperature is reached.
  • the plant as a whole can be controlled by a computer and is therefore fully automated.

Landscapes

  • 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)
  • Dispersion Chemistry (AREA)
  • Heat Treatment Of Water, Waste Water Or Sewage (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

L'eau à purifier est envoyée dans un évaporateur (10), où elle est chauffée et transformée au moins partielle en vapeur, ce qui a pour conséquence la concentration de la phase liquide. La vapeur est ensuite comprimée (13) et envoyée à un échangeur thermique (9), de façon qu'elle rende sa chaleur latente à l'eau entrante, ce qui a pour conséquence la condensation de la vapeur. La phase liquide concentrée (30) et la vapeur condensée (20) sont extraites (25, 19) en vue d'une réutilisation ultérieure.
PCT/EP1996/005385 1995-12-06 1996-12-04 Procede et dispositif pour purifier l'eau WO1997020606A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU11751/97A AU1175197A (en) 1995-12-06 1996-12-04 A method and a device for purifying water

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95TO000974A IT1281057B1 (it) 1995-12-06 1995-12-06 Procedimento e dispositivo per la depurazione di acque.
ITTO95A000974 1995-12-06

Publications (1)

Publication Number Publication Date
WO1997020606A1 true WO1997020606A1 (fr) 1997-06-12

Family

ID=11414005

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1996/005385 WO1997020606A1 (fr) 1995-12-06 1996-12-04 Procede et dispositif pour purifier l'eau

Country Status (3)

Country Link
AU (1) AU1175197A (fr)
IT (1) IT1281057B1 (fr)
WO (1) WO1997020606A1 (fr)

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029387A1 (fr) * 1997-12-05 1999-06-17 Inland Technologies Inc. Procede et appareil pour extraction d'eau a partir d'un melange liquide aqueux
EP0933331A2 (fr) * 1998-01-28 1999-08-04 Mitsubishi Heavy Industries, Ltd. Dispositif d'évaporation pour la concentration des eaux usées
EP0995472A1 (fr) * 1998-10-23 2000-04-26 Bionorica Arzneimittel GmbH Installation de destillation sous vide et son utilisation pour la concentration des mélanges de solvants organiques et aqueuses
WO2000024488A1 (fr) * 1998-10-23 2000-05-04 Bionorica Arzneimittel Gmbh Installation de distillation sous vide et son utilisationour concentrer des melanges de solvants organiques aqueux
US6120651A (en) * 1998-01-07 2000-09-19 Inland Technologies Inc. Method for removing water from an aqueous fluid mixture
WO2006094437A1 (fr) * 2005-02-03 2006-09-14 Depei Liu Procede et evaporation a effets multiples des eaux residuaires d’oxydes d'alkylene
US7291250B1 (en) 1999-10-20 2007-11-06 Bionorica Ag Vacuum distillation system and use thereof for concentrating organic-aqueous solvent mixtures
WO2009033209A1 (fr) * 2007-09-11 2009-03-19 John Francis Urch Appareil de distillation
FR2928276A1 (fr) * 2008-03-10 2009-09-11 Ridel Soc Par Actions Simplifi Evaporateur a compression mecanique de vapeur comportant un dispositif de detente en entree de separateur
CN103041608A (zh) * 2012-12-06 2013-04-17 温州市日中轻工机械有限公司 蒸发器出料闪冷装置及其使用方法
CN103387306A (zh) * 2013-07-30 2013-11-13 大连广泰源环保科技有限公司 一种垃圾渗滤液的处理系统及其处理工艺
WO2013152308A3 (fr) * 2012-04-06 2014-03-13 Deka Products Limited Partnership Appareil, procédé et système de distillation de vapeur d'eau
US8888963B2 (en) 2008-08-15 2014-11-18 Deka Products Limited Partnership Water vending apparatus
US9610518B2 (en) 2011-07-15 2017-04-04 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US11325845B2 (en) 2018-10-15 2022-05-10 Deka Products Limited Partnership Water distillation apparatus, method and system
US11352267B2 (en) 2011-07-15 2022-06-07 Deka Products Limited Partnership Water distillation apparatus, method and system
US11939237B2 (en) 2011-07-15 2024-03-26 Deka Products Limited Partnership Water vapor distillation apparatus, method and systems

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020084630A1 (fr) 2018-10-22 2020-04-30 Ethical Energy Petrochem Strategies Pvt. Ltd, Système de récupération simultanée d'eau purifiée et de solides dissous à partir d'eau impure à teneur élevée en mdt

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0142251A2 (fr) * 1983-09-28 1985-05-22 Oy-Finn-Aqua Ltd., Procédé d'élimination de fluctuations de température d'un liquide devant alimenter un appareil de distillation
US4551198A (en) * 1982-03-30 1985-11-05 Kamyr, Inc. Method of flashing black liquor
DE7216268U (fr) * 1972-04-28 1986-06-19 Feld & Hahn Gmbh, 5413 Bendorf, De
WO1992010264A1 (fr) * 1990-12-14 1992-06-25 Aquamax Oy Appareil de distillation
WO1993024198A1 (fr) * 1992-06-04 1993-12-09 Transferon Wäschereimaschinen Gmbh Procede et dispositif de traitement de solvants contamines a haut point d'ebullition

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7216268U (fr) * 1972-04-28 1986-06-19 Feld & Hahn Gmbh, 5413 Bendorf, De
US4551198A (en) * 1982-03-30 1985-11-05 Kamyr, Inc. Method of flashing black liquor
EP0142251A2 (fr) * 1983-09-28 1985-05-22 Oy-Finn-Aqua Ltd., Procédé d'élimination de fluctuations de température d'un liquide devant alimenter un appareil de distillation
WO1992010264A1 (fr) * 1990-12-14 1992-06-25 Aquamax Oy Appareil de distillation
WO1993024198A1 (fr) * 1992-06-04 1993-12-09 Transferon Wäschereimaschinen Gmbh Procede et dispositif de traitement de solvants contamines a haut point d'ebullition

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1999029387A1 (fr) * 1997-12-05 1999-06-17 Inland Technologies Inc. Procede et appareil pour extraction d'eau a partir d'un melange liquide aqueux
US6120651A (en) * 1998-01-07 2000-09-19 Inland Technologies Inc. Method for removing water from an aqueous fluid mixture
EP0933331A2 (fr) * 1998-01-28 1999-08-04 Mitsubishi Heavy Industries, Ltd. Dispositif d'évaporation pour la concentration des eaux usées
EP0933331A3 (fr) * 1998-01-28 1999-12-15 Mitsubishi Heavy Industries, Ltd. Dispositif d'évaporation pour la concentration des eaux usées
US6076369A (en) * 1998-01-28 2000-06-20 Mitsubishi Heavy Industries, Ltd. Evaporative concentration apparatus for waste water
EP0995472A1 (fr) * 1998-10-23 2000-04-26 Bionorica Arzneimittel GmbH Installation de destillation sous vide et son utilisation pour la concentration des mélanges de solvants organiques et aqueuses
WO2000024488A1 (fr) * 1998-10-23 2000-05-04 Bionorica Arzneimittel Gmbh Installation de distillation sous vide et son utilisationour concentrer des melanges de solvants organiques aqueux
US7291250B1 (en) 1999-10-20 2007-11-06 Bionorica Ag Vacuum distillation system and use thereof for concentrating organic-aqueous solvent mixtures
WO2006094437A1 (fr) * 2005-02-03 2006-09-14 Depei Liu Procede et evaporation a effets multiples des eaux residuaires d’oxydes d'alkylene
WO2009033209A1 (fr) * 2007-09-11 2009-03-19 John Francis Urch Appareil de distillation
FR2928276A1 (fr) * 2008-03-10 2009-09-11 Ridel Soc Par Actions Simplifi Evaporateur a compression mecanique de vapeur comportant un dispositif de detente en entree de separateur
WO2009112451A1 (fr) * 2008-03-10 2009-09-17 Ridel Evaporateur a compression mecanique de vapeur comportant un dispositif de detente en entree de separateur
US8888963B2 (en) 2008-08-15 2014-11-18 Deka Products Limited Partnership Water vending apparatus
US9610518B2 (en) 2011-07-15 2017-04-04 Deka Products Limited Partnership Water vapor distillation apparatus, method and system
US11352267B2 (en) 2011-07-15 2022-06-07 Deka Products Limited Partnership Water distillation apparatus, method and system
US11939237B2 (en) 2011-07-15 2024-03-26 Deka Products Limited Partnership Water vapor distillation apparatus, method and systems
WO2013152308A3 (fr) * 2012-04-06 2014-03-13 Deka Products Limited Partnership Appareil, procédé et système de distillation de vapeur d'eau
CN103041608A (zh) * 2012-12-06 2013-04-17 温州市日中轻工机械有限公司 蒸发器出料闪冷装置及其使用方法
CN103041608B (zh) * 2012-12-06 2015-01-07 温州市日中轻工机械有限公司 蒸发器出料闪冷装置及其使用方法
CN103387306A (zh) * 2013-07-30 2013-11-13 大连广泰源环保科技有限公司 一种垃圾渗滤液的处理系统及其处理工艺
US11325845B2 (en) 2018-10-15 2022-05-10 Deka Products Limited Partnership Water distillation apparatus, method and system

Also Published As

Publication number Publication date
IT1281057B1 (it) 1998-02-11
AU1175197A (en) 1997-06-27
ITTO950974A0 (fr) 1995-12-06
ITTO950974A1 (it) 1997-06-06

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