FR2132912A5 - Vacuum evaporation tower - in which radiant energy maintains uniform soln droplets at nearly constant temp - Google Patents

Vacuum evaporation tower - in which radiant energy maintains uniform soln droplets at nearly constant temp

Info

Publication number
FR2132912A5
FR2132912A5 FR7111448A FR7111448A FR2132912A5 FR 2132912 A5 FR2132912 A5 FR 2132912A5 FR 7111448 A FR7111448 A FR 7111448A FR 7111448 A FR7111448 A FR 7111448A FR 2132912 A5 FR2132912 A5 FR 2132912A5
Authority
FR
France
Prior art keywords
droplets
soln
nearly constant
radiant energy
vacuum evaporation
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.)
Expired
Application number
FR7111448A
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.)
Air Liquide SA
Original Assignee
Air Liquide SA
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 Air Liquide SA filed Critical Air Liquide SA
Priority to FR7111448A priority Critical patent/FR2132912A5/en
Application granted granted Critical
Publication of FR2132912A5 publication Critical patent/FR2132912A5/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0446—Juxtaposition of mixers-settlers
    • B01D11/0473—Jet mixers, venturi mixers

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Relatively volatile solvent is stripped by vacuum when soln. falls, as fairly uniform droplets of dia. about 1 mm. through a tower heated by IR or microwave radiation, which holds temp. of droplets nearly constant during solvent evaporation. Droplets may be produced by electrical vibration of one or more inlet capillaries opening downwards. Vacuum may be maintained by liquid NH2 diffusion pump backed up by rotary pump, and solvent recovered via barometric leg. Appts. may be used for heat sensitive products, e.g. recovery of pharmaceutical amino-acids from ethanol soln.
FR7111448A 1971-04-01 1971-04-01 Vacuum evaporation tower - in which radiant energy maintains uniform soln droplets at nearly constant temp Expired FR2132912A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7111448A FR2132912A5 (en) 1971-04-01 1971-04-01 Vacuum evaporation tower - in which radiant energy maintains uniform soln droplets at nearly constant temp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7111448A FR2132912A5 (en) 1971-04-01 1971-04-01 Vacuum evaporation tower - in which radiant energy maintains uniform soln droplets at nearly constant temp

Publications (1)

Publication Number Publication Date
FR2132912A5 true FR2132912A5 (en) 1972-11-24

Family

ID=9074550

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7111448A Expired FR2132912A5 (en) 1971-04-01 1971-04-01 Vacuum evaporation tower - in which radiant energy maintains uniform soln droplets at nearly constant temp

Country Status (1)

Country Link
FR (1) FR2132912A5 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203863A (en) * 1977-05-24 1980-05-20 Nukem Gmbh Process for the production of solid particles
US4472179A (en) * 1980-12-18 1984-09-18 Steag Ag Method of, and device for, drying flowing gases
US5232550A (en) * 1987-04-27 1993-08-03 Ohkawara Kakohki Co., Ltd. Vacuum drying method
DE10049856A1 (en) * 2000-10-09 2002-03-07 Siemens Ag Device for continuously vaporizing small amounts of liquid in heated vaporizing chamber comprises capillary which introduces liquid slowly into vaporizing chamber, and device for exciting free end of capillary

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4203863A (en) * 1977-05-24 1980-05-20 Nukem Gmbh Process for the production of solid particles
US4472179A (en) * 1980-12-18 1984-09-18 Steag Ag Method of, and device for, drying flowing gases
US5232550A (en) * 1987-04-27 1993-08-03 Ohkawara Kakohki Co., Ltd. Vacuum drying method
DE10049856A1 (en) * 2000-10-09 2002-03-07 Siemens Ag Device for continuously vaporizing small amounts of liquid in heated vaporizing chamber comprises capillary which introduces liquid slowly into vaporizing chamber, and device for exciting free end of capillary

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Legal Events

Date Code Title Description
ST Notification of lapse