FR2272706A1 - Fractional distillation of materials which sublime and/or congeal - by by azeotrope formation with lower boiling point solvent - Google Patents

Fractional distillation of materials which sublime and/or congeal - by by azeotrope formation with lower boiling point solvent

Info

Publication number
FR2272706A1
FR2272706A1 FR7504983A FR7504983A FR2272706A1 FR 2272706 A1 FR2272706 A1 FR 2272706A1 FR 7504983 A FR7504983 A FR 7504983A FR 7504983 A FR7504983 A FR 7504983A FR 2272706 A1 FR2272706 A1 FR 2272706A1
Authority
FR
France
Prior art keywords
congeal
sublime
materials
boiling point
distillation
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.)
Withdrawn
Application number
FR7504983A
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.)
Haltermann Et Co Johann GmbH
Original Assignee
Haltermann Et Co Johann GmbH
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 Haltermann Et Co Johann GmbH filed Critical Haltermann Et Co Johann GmbH
Publication of FR2272706A1 publication Critical patent/FR2272706A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
    • C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
    • C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
    • C07C37/74—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation
    • 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
    • B01D3/34—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C7/00—Purification; Separation; Use of additives
    • C07C7/04—Purification; Separation; Use of additives by distillation
    • C07C7/05—Purification; Separation; Use of additives by distillation with the aid of auxiliary compounds

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Analytical Chemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Water Supply & Treatment (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Process for distillation of products (I) which sublime and/or congeal comprises effecting the condensation of (I) in direct heat exchange with a material (II) which does not congeal, is chemically inert towards (I) under the distillation conditions and has a lower b. pt. than (I) or forms an azeotrope of lower b. pt. with (I), and withdrawing (I) below the condensation zone. Pref. (II) is miscible with (I) and is selected from (halogenated)aromatic hydrocarbons, glycols and paraffins, esp. iso-paraffins. Method prevents blockage of condenser tubing and vacuum lines. It is suitable e.g. for distillation of crude napththalene, using cumene as (II).
FR7504983A 1974-02-19 1975-02-18 Fractional distillation of materials which sublime and/or congeal - by by azeotrope formation with lower boiling point solvent Withdrawn FR2272706A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742407809 DE2407809B2 (en) 1974-02-19 1974-02-19 Process for column distillation of subliming and / or stagnant products

Publications (1)

Publication Number Publication Date
FR2272706A1 true FR2272706A1 (en) 1975-12-26

Family

ID=5907776

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7504983A Withdrawn FR2272706A1 (en) 1974-02-19 1975-02-18 Fractional distillation of materials which sublime and/or congeal - by by azeotrope formation with lower boiling point solvent

Country Status (4)

Country Link
JP (1) JPS50118967A (en)
BE (1) BE825349A (en)
DE (1) DE2407809B2 (en)
FR (1) FR2272706A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4929523B2 (en) * 2000-09-21 2012-05-09 三菱瓦斯化学株式会社 Method for producing isophthalonitrile
JP5950155B2 (en) * 2012-05-11 2016-07-13 東レ・ファインケミカル株式会社 Method for producing silicon compound

Also Published As

Publication number Publication date
BE825349A (en) 1975-05-29
DE2407809B2 (en) 1976-01-02
DE2407809A1 (en) 1975-08-21
JPS50118967A (en) 1975-09-18

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Legal Events

Date Code Title Description
RE Withdrawal of published application