Process for the reclamation of used glycolic aircraft deicing co

Details Process for the reclamation of used glycolic aircraft deicing co Process for the reclamation of used glycolic aircraft deicing co

1994-08-04

1995-05-02

Spear, Frank

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 210259, B01D 6116

Patent

active

054116686

ABSTRACT:
In the described process, the used aircraft deicing fluid is subjected first to a conventional filtration to remove undissolved substances and subsequently to an ultrafiltration to remove, in particular, the polymeric thickeners. The permeate from the ultrafiltration is then treated with ion exchangers, and the resulting eluate, essentially composed of glycol and water, is subsequently distilled to remove water and thus the glycol content is brought to the required value. The glycol/water solution obtained in this way can be used to prepare a new aircraft deicing composition by mixing the other components required in the glycol/water solution.

REFERENCES:
patent: 4358389 (1982-11-01), Konig-Lumer et al.
patent: 4744913 (1988-05-01), Salvador et al.
patent: 5034134 (1991-07-01), George et al.

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