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EP0255022A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for removal of halogen cyanides and phosgene from waste gases

Assignee: Hoechst AG
•
Filing: 1987-07-21
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Granted: —
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Expires: 2007-07-21
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Abstract

Abstract Translated from German Halogencyane und/oder Phosgen werden aus Abgasen dadurch entfernt, daß man die Abgase in innigen Kontakt mit einer wäßrigen Lösung mindestens eines Amins der Formel NR3 bringt; in der Formel stellen 1 oder 2 der Reste R eine Alkanol- oder Alkylamingruppe mit jeweils 2 oder 3 C-Atomen dar, wobei an den Stickstoff der Amingruppe H und/oder C1-C2-Alkyl gebunden ist und die restlichen Gruppen R H oder C1-C4-Alkyl sind. Halogen cans and / or phosgene are removed from exhaust gases by bringing the exhaust gases into intimate contact with an aqueous solution of at least one amine of the formula NR3; in the formula, 1 or 2 of the radicals R represent an alkanol or alkylamine group each having 2 or 3 carbon atoms, H and / or C1-C2-alkyl being bonded to the nitrogen of the amine group and the remaining groups RH or C1- Are C4-alkyl.

Inventors

  • 👤 Richard Dr. Bicker
  • 👤 Manfred Dr. Schrod
  • 👤 Hans Dr. Militzer

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-01 15:29
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/34; B01D53/46; B01D53/68; B01D53/70

Claims Analysis

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References Cited (Backward Citations)

DE1934856B Cited
FR2317959A1 Cited
US4493818A Cited

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