GB647241A - Improvements in processes for recovering volatile substances from gases - Google Patents

Improvements in processes for recovering volatile substances from gases

Info

Publication number
GB647241A
GB647241A GB8860/45A GB886045A GB647241A GB 647241 A GB647241 A GB 647241A GB 8860/45 A GB8860/45 A GB 8860/45A GB 886045 A GB886045 A GB 886045A GB 647241 A GB647241 A GB 647241A
Authority
GB
United Kingdom
Prior art keywords
gases
distillation
recovered
volatile substances
substances
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
GB8860/45A
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.)
Lambiotte Freres Ets
Original Assignee
Lambiotte Freres Ets
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 Lambiotte Freres Ets filed Critical Lambiotte Freres Ets
Publication of GB647241A publication Critical patent/GB647241A/en
Expired 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
    • B01D53/14—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 by absorption
    • B01D53/1487—Removing organic compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Abstract

Volatile substances are recovered from gases by washing the gases, preferably continuously, with a countercurrent of an organic liquid which (i) is a good solvent for the volatile substances, (ii) does not combine therewith or enter into any other reaction; and (iii) has, under the same pressure conditions, a boiling point lower than that of the most volatile of the substances to be recovered, or forms with one of these an azeotropic mixture capable of being broken by known means, e.g. by distillation by countercurrent with an auxiliary liquid, and finally recovering the evaporated solvent from the gas, e.g. by scrubbing with water or high boiling point oils. There may be used as solvent, at least one of the volatile substances in the gas. Examples relate to the treatment of gases derived from the distillation of wood, the solvents being (i) a mixture containing acetone, methyl alcohol, methyl acetate, (ii) pure methyl alcohol, (iii) pure acetaldehyde, these solvents having been recovered previously from the distillation gases. Specification 389,145 is referred to.ALSO:Volatile substances are recovered from gases by washing the gases, preferably continuously, with a countercurrent of an organic liquid which (i) is a good solvent for the volatile substances; (ii) does not combine therewith or enter into any other reaction, and (iii) has, under the same pressure conditions, a boiling point lower than that of the most volatile of the substances to be recovered, or forms with one of these an azeotropic mixture capable of being broken by known means, e.g. by distillation by countercurrent with an auxiliary liquid, and finally recovering the evaporated solvent from the gas, e.g. by scrubbing with water or high boiling point oils. There may be used as solvent, at least one of the volatile substances in the gas. Examples relate to the treatment of gases derived from the distillation of wood, the solvents being (1) a mixture containing acetone, methyl alcohol, methyl acetate; (ii) pure methyl alcohol; (iii) pure acetaldehyde, these solvents having been recovered previously from the distillation gases. Specification 389,145, [Group IV], is referred to.
GB8860/45A 1942-03-03 1945-04-10 Improvements in processes for recovering volatile substances from gases Expired GB647241A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR647241X 1942-03-03

Publications (1)

Publication Number Publication Date
GB647241A true GB647241A (en) 1950-12-06

Family

ID=9001972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8860/45A Expired GB647241A (en) 1942-03-03 1945-04-10 Improvements in processes for recovering volatile substances from gases

Country Status (1)

Country Link
GB (1) GB647241A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2944368A1 (en) * 2014-05-13 2015-11-18 Scheuch GmbH Method and device for cleaning an exhaust gas flow

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2944368A1 (en) * 2014-05-13 2015-11-18 Scheuch GmbH Method and device for cleaning an exhaust gas flow

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