FR2387068A1 - Multistage evaporator for desalination of seawater - in which throughput can be halved without alteration of press. and temp. - Google Patents

Multistage evaporator for desalination of seawater - in which throughput can be halved without alteration of press. and temp.

Info

Publication number
FR2387068A1
FR2387068A1 FR7710894A FR7710894A FR2387068A1 FR 2387068 A1 FR2387068 A1 FR 2387068A1 FR 7710894 A FR7710894 A FR 7710894A FR 7710894 A FR7710894 A FR 7710894A FR 2387068 A1 FR2387068 A1 FR 2387068A1
Authority
FR
France
Prior art keywords
vapour
unit
stage
throughput
press
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.)
Granted
Application number
FR7710894A
Other languages
French (fr)
Other versions
FR2387068B1 (en
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.)
Cojafex BV
Original Assignee
Cojafex BV
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 Cojafex BV filed Critical Cojafex BV
Priority to FR7710894A priority Critical patent/FR2387068A1/en
Publication of FR2387068A1 publication Critical patent/FR2387068A1/en
Application granted granted Critical
Publication of FR2387068B1 publication Critical patent/FR2387068B1/fr
Granted legal-status Critical Current

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
    • C02F1/043—Details
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/06—Flash evaporation
    • 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

Landscapes

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

Abstract

In a multistage flash evaporator, a channel in the form of a crevice connects the feed point of a stage to the vapour offtake point. The stage has two sections. One has a cross-section rsembling that of a snail shell and evaporation occurs here. The other is sack-shaped and is primarily a transport zone for concentrated liquor. The evaporator is esp. used for deslination of sea water. The throughput of the unit can be reduced by 50% of the design rate without variation of stage pressures and temps. No mechanical regulation of flow in the unit is necessary. Vapour is produced differentially so that no disentrainment equipment is needed and the press. drop in the vapour offtake line is minimal. The residence time in the unit is short.
FR7710894A 1977-04-12 1977-04-12 Multistage evaporator for desalination of seawater - in which throughput can be halved without alteration of press. and temp. Granted FR2387068A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7710894A FR2387068A1 (en) 1977-04-12 1977-04-12 Multistage evaporator for desalination of seawater - in which throughput can be halved without alteration of press. and temp.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7710894A FR2387068A1 (en) 1977-04-12 1977-04-12 Multistage evaporator for desalination of seawater - in which throughput can be halved without alteration of press. and temp.

Publications (2)

Publication Number Publication Date
FR2387068A1 true FR2387068A1 (en) 1978-11-10
FR2387068B1 FR2387068B1 (en) 1983-06-10

Family

ID=9189283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7710894A Granted FR2387068A1 (en) 1977-04-12 1977-04-12 Multistage evaporator for desalination of seawater - in which throughput can be halved without alteration of press. and temp.

Country Status (1)

Country Link
FR (1) FR2387068A1 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1552475A (en) * 1967-01-25 1969-01-03 Westinghouse Electric Corp
FR1568954A (en) * 1968-03-04 1969-05-30
FR2135338A1 (en) * 1971-05-06 1972-12-15 Hitachi Ltd
GB1339328A (en) * 1971-04-01 1973-12-05 Aluminum Co Of America Method and apparatus for evaporation
US3791934A (en) * 1971-08-09 1974-02-12 Us Interior Helical multistage flash distillation unit
DE2542146A1 (en) * 1975-09-22 1977-03-31 Bernhard Dipl Ing Kunst Pressure reducer for flash evaporators - having pair of consecutive serrated baffles with V notches

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1552475A (en) * 1967-01-25 1969-01-03 Westinghouse Electric Corp
FR1568954A (en) * 1968-03-04 1969-05-30
GB1339328A (en) * 1971-04-01 1973-12-05 Aluminum Co Of America Method and apparatus for evaporation
FR2135338A1 (en) * 1971-05-06 1972-12-15 Hitachi Ltd
US3791934A (en) * 1971-08-09 1974-02-12 Us Interior Helical multistage flash distillation unit
DE2542146A1 (en) * 1975-09-22 1977-03-31 Bernhard Dipl Ing Kunst Pressure reducer for flash evaporators - having pair of consecutive serrated baffles with V notches

Also Published As

Publication number Publication date
FR2387068B1 (en) 1983-06-10

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse