Title:
METHOD FOR REPROCESSING AIRCRAFT DE-ICING AGENTS COMPRISING GLYCOL
Document Type and Number:
WIPO Patent Application WO/2010/072312
Kind Code:
A3
Abstract:
The invention relates to a method for reprocessing aircraft de-icing agents comprising glycol, wherein (1) the used aircraft de-icing agents are collected in a suitable device, (2) the used aircraft de-icing agent is subsequently brought to a propylene glycol content of between 55 and 75% by weight without prior separating of solid or suspended impurities by expelling water at increased temperature, (3) the concentrated used aircraft de-icing agent thus obtained is transported to a central reprocessing system, where the same is subjected to a fine distillation, and wherein (4) propylene glycol is produced as a distillate of the fine distillation.
Inventors:
STANKOWIAK ACHIM (DE)
JESCHKE INGO (DE)
BERGSTROEM THOMAS (DE)
JESCHKE INGO (DE)
BERGSTROEM THOMAS (DE)
Application Number:
PCT/EP2009/008584
Publication Date:
February 24, 2011
Filing Date:
December 02, 2009
Export Citation:
Assignee:
CLARIANT FINANCE BVI LTD
STANKOWIAK ACHIM (DE)
JESCHKE INGO (DE)
BERGSTROEM THOMAS (DE)
STANKOWIAK ACHIM (DE)
JESCHKE INGO (DE)
BERGSTROEM THOMAS (DE)
International Classes:
C09K3/18; B64F5/00; C07C29/88
Foreign References:
| CA2116827A1 | 1995-05-03 | |||
| EP0637620A2 | 1995-02-08 | |||
| DE19650682A1 | 1998-06-10 | |||
| EP1889658A2 | 2008-02-20 |
Attorney, Agent or Firm:
MIKULECKY, Klaus et al. (Patent ManagementAm Unisys-Park 1, Sulzbach, DE)
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