WO2008148376A3 - Verfahren zur gewinnung von phthalsäureanhydrid aus reaktionsgasen - Google Patents

Verfahren zur gewinnung von phthalsäureanhydrid aus reaktionsgasen Download PDF

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Publication number
WO2008148376A3
WO2008148376A3 PCT/DE2008/000920 DE2008000920W WO2008148376A3 WO 2008148376 A3 WO2008148376 A3 WO 2008148376A3 DE 2008000920 W DE2008000920 W DE 2008000920W WO 2008148376 A3 WO2008148376 A3 WO 2008148376A3
Authority
WO
WIPO (PCT)
Prior art keywords
phthalic anhydride
reaction gases
producing phthalic
desublimation
producing
Prior art date
Application number
PCT/DE2008/000920
Other languages
English (en)
French (fr)
Other versions
WO2008148376A2 (de
Inventor
Gerhard Keunecke
Original Assignee
Chemieanlagenbau Chemnitz Gmbh
Gerhard Keunecke
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 Chemieanlagenbau Chemnitz Gmbh, Gerhard Keunecke filed Critical Chemieanlagenbau Chemnitz Gmbh
Publication of WO2008148376A2 publication Critical patent/WO2008148376A2/de
Publication of WO2008148376A3 publication Critical patent/WO2008148376A3/de

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
    • C07D307/77—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom ortho- or peri-condensed with carbocyclic rings or ring systems
    • C07D307/78—Benzo [b] furans; Hydrogenated benzo [b] furans
    • C07D307/82—Benzo [b] furans; Hydrogenated benzo [b] furans with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the hetero ring
    • C07D307/83—Oxygen atoms

Landscapes

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

Abstract

Verfahren zur partiellen fraktionierten Desublimation von Phthalsäureanhydrid aus Reaktionsgasen mit anschließender Aufarbeitung zu reinem Phthalsäureanhydrid durch Destillation mit integrierter Phtalsäurespaltung und Rückführung des dabei gewonnenen Phthalsäureanhydrids zur Desublimationsstufe.
PCT/DE2008/000920 2007-06-06 2008-06-05 Verfahren zur gewinnung von phthalsäureanhydrid aus reaktionsgasen WO2008148376A2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007026360.2 2007-06-06
DE200710026360 DE102007026360A1 (de) 2007-06-06 2007-06-06 Verfahren zur Gewinnung von Phthalsäureanhydrid aus Reaktionsgasen

Publications (2)

Publication Number Publication Date
WO2008148376A2 WO2008148376A2 (de) 2008-12-11
WO2008148376A3 true WO2008148376A3 (de) 2009-02-19

Family

ID=39929717

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000920 WO2008148376A2 (de) 2007-06-06 2008-06-05 Verfahren zur gewinnung von phthalsäureanhydrid aus reaktionsgasen

Country Status (2)

Country Link
DE (1) DE102007026360A1 (de)
WO (1) WO2008148376A2 (de)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537639A1 (de) * 1975-08-23 1977-02-24 Deggendorfer Werft Eisenbau Apparat zum abschneiden von sublimierenden stoffen aus dampf-gas-gemischen

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2537639A1 (de) * 1975-08-23 1977-02-24 Deggendorfer Werft Eisenbau Apparat zum abschneiden von sublimierenden stoffen aus dampf-gas-gemischen

Also Published As

Publication number Publication date
DE102007026360A1 (de) 2008-12-11
WO2008148376A2 (de) 2008-12-11

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