FIELD: technological processes.
SUBSTANCE: invention relates to a method and system for processing for secondary use of spent ethylene glycol or propylene glycol extracted from anti-icing solutions for aircraft. Regenerated spent ethylene glycol or propylene glycol contains water and other undesirable substances to be removed in order to obtain a solution, which does not contain said substances, which can be further processed to remove all contained water, and is mixed with additives required to certify a final solution of glycol to eliminate icing of aircraft. Method and system use a computer controller for continuous automatic portion treatment of spent glycol, including, in combination, filtration, distillation, mixing and testing in certain sequences.
EFFECT: improved quality of recycled glycol with purity of at least 99,5 % and preferably between 99,6 % and 99,9 % with respect to glycol concentration.
14 cl, 3 dwg
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