FR2386650A1 - Recovery of atmospheric moisture - by passing cooled night air through silica adsorbent and desorbing water with hot day time air - Google Patents

Recovery of atmospheric moisture - by passing cooled night air through silica adsorbent and desorbing water with hot day time air

Info

Publication number
FR2386650A1
FR2386650A1 FR7710077A FR7710077A FR2386650A1 FR 2386650 A1 FR2386650 A1 FR 2386650A1 FR 7710077 A FR7710077 A FR 7710077A FR 7710077 A FR7710077 A FR 7710077A FR 2386650 A1 FR2386650 A1 FR 2386650A1
Authority
FR
France
Prior art keywords
air
water
layer
night
silica gel
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
FR7710077A
Other languages
French (fr)
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.)
MITTEX ANSTALT
Original Assignee
MITTEX ANSTALT
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 MITTEX ANSTALT filed Critical MITTEX ANSTALT
Priority to FR7710077A priority Critical patent/FR2386650A1/en
Priority to OA56137A priority patent/OA05632A/en
Publication of FR2386650A1 publication Critical patent/FR2386650A1/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/26—Drying gases or vapours
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/14—Colloidal silica, e.g. dispersions, gels, sols
    • C01B33/152—Preparation of hydrogels
    • C01B33/154—Preparation of hydrogels by acidic treatment of aqueous silicate solutions
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/113—Silicon oxides; Hydrates thereof
    • C01B33/12—Silica; Hydrates thereof, e.g. lepidoic silicic acid
    • C01B33/16—Preparation of silica xerogels
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B33/00—Silicon; Compounds thereof
    • C01B33/20—Silicates
    • C01B33/32—Alkali metal silicates
    • 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
    • C02F1/18—Transportable devices to obtain potable water
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
    • E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
    • E03B3/28—Methods or installations for obtaining or collecting drinking water or tap water from humid air
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Dispersion Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Water Supply & Treatment (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Drying Of Gases (AREA)

Abstract

Process of recovering water from air involves alternate utilisation of the cool night air for cooling and dehumidifying the air by adsorption, and of the warm day-time air for desorption with condensation of the water removed by adsorption from the night air. The improvement comprises passing the night air first through a layer of a substantially non-absorbing material so as to cool the non-adsorbing material, and thereafter through a layer of coarsely grained, shaped slica gel so as to adsorb the moisture content of the night air, conducting the hot day-time air in reverse direction first through the layer of silica gel so as to remove the water adsorbed in the layer of silica gel, and thereafter through the layer of non-absorbing material cooled by the cooler night air so as to condense the water removed from the layer of silica gel on the cooled non-adsorbent material and draining off the condensed water from the non-adsorbent material. The silica gel permits water adsorption within the temp. range of 0-40 degrees C and water desorption within the temp. 30-70 degrees C.
FR7710077A 1977-04-04 1977-04-04 Recovery of atmospheric moisture - by passing cooled night air through silica adsorbent and desorbing water with hot day time air Pending FR2386650A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7710077A FR2386650A1 (en) 1977-04-04 1977-04-04 Recovery of atmospheric moisture - by passing cooled night air through silica adsorbent and desorbing water with hot day time air
OA56137A OA05632A (en) 1977-04-04 1977-04-07 Process and installation for obtaining water from air and for making the necessary silica gels.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7710077A FR2386650A1 (en) 1977-04-04 1977-04-04 Recovery of atmospheric moisture - by passing cooled night air through silica adsorbent and desorbing water with hot day time air

Publications (1)

Publication Number Publication Date
FR2386650A1 true FR2386650A1 (en) 1978-11-03

Family

ID=9188971

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7710077A Pending FR2386650A1 (en) 1977-04-04 1977-04-04 Recovery of atmospheric moisture - by passing cooled night air through silica adsorbent and desorbing water with hot day time air

Country Status (2)

Country Link
FR (1) FR2386650A1 (en)
OA (1) OA05632A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444644A1 (en) * 1978-12-21 1980-07-18 Mittex Ag PROCESS AND DEVICE FOR THE PRODUCTION OF SILICA GEL
EP0014895A1 (en) * 1979-02-15 1980-09-03 Mitsubishi Denki Kabushiki Kaisha A process for producing liquid water
EP0019143A1 (en) * 1979-05-09 1980-11-26 Mitsubishi Denki Kabushiki Kaisha Water producing apparatus
FR2458034A1 (en) * 1979-06-01 1980-12-26 Rca Corp DESICCATOR USING SOLAR ENERGY, PARTICULARLY FOR SOLAR GROUND SENSOR
EP0363197A2 (en) * 1988-10-06 1990-04-11 Unilever Plc Preparation of sodium silicate

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE663920C (en) * 1933-09-29 1939-02-10 E H Edmund Altenkirch Dr Ing Method and device for obtaining water from atmospheric air
FR891276A (en) * 1943-02-17 1944-03-02 Process for extracting atmospheric water in countries with a dry climate.
FR1482288A (en) * 1965-05-21 1967-05-26 Spectra International Improved method and device for obtaining water from the atmosphere

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE663920C (en) * 1933-09-29 1939-02-10 E H Edmund Altenkirch Dr Ing Method and device for obtaining water from atmospheric air
FR891276A (en) * 1943-02-17 1944-03-02 Process for extracting atmospheric water in countries with a dry climate.
FR1482288A (en) * 1965-05-21 1967-05-26 Spectra International Improved method and device for obtaining water from the atmosphere

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2444644A1 (en) * 1978-12-21 1980-07-18 Mittex Ag PROCESS AND DEVICE FOR THE PRODUCTION OF SILICA GEL
EP0014895A1 (en) * 1979-02-15 1980-09-03 Mitsubishi Denki Kabushiki Kaisha A process for producing liquid water
EP0019143A1 (en) * 1979-05-09 1980-11-26 Mitsubishi Denki Kabushiki Kaisha Water producing apparatus
FR2458034A1 (en) * 1979-06-01 1980-12-26 Rca Corp DESICCATOR USING SOLAR ENERGY, PARTICULARLY FOR SOLAR GROUND SENSOR
EP0363197A2 (en) * 1988-10-06 1990-04-11 Unilever Plc Preparation of sodium silicate
EP0363197A3 (en) * 1988-10-06 1990-07-11 Unilever Plc Preparation of sodium silicate

Also Published As

Publication number Publication date
OA05632A (en) 1981-04-30

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