초록 ▼

A deicing fluid recovery system for aircraft deicing apparatus includes a storage tank from which a deicing fluid/water deicing mixture is pumped through a line heater to a deicing fluid distribution and collection zone for application to the wings and fuselage of aircraft. Expended deicing fluid is

A deicing fluid recovery system for aircraft deicing apparatus includes a storage tank from which a deicing fluid/water deicing mixture is pumped through a line heater to a deicing fluid distribution and collection zone for application to the wings and fuselage of aircraft. Expended deicing fluid is collected in a drainage system incorporated into a concrete or asphalt pad and directed to a sump. Upon accumulation of a sufficient quantity, the diluted used deicing fluid is pumped to a sludge tank. Solids and free water are separated by settling and filtration processes in the sludge tank. The filtered deicing fluid mixture is heated through sequential heat exchangers and directed to a regenerator. The deicing fluid mixture is leaned by a dehydration process in the regenerator in which the mixture is heated and compressed air is injected to exhaust water from a stripping column. The lean deicing fluid flows over an overflow weir into an accumulator. The heated and leaned deicing fluid mixture then is passed back through the sequential heat exchangers, as a heat source, and pumped back into the storage tank for subsequent reuse.

대표청구항 ▼

[ What is claimed is:] [1.] A deicing fluid recovery system especially adapted for aircraft deicing apparatus, comprising:storage means for storing and mixing a deicing fluid and water mixture;application means for applying said deicing fluid and water mixture to an aircraft for deicing;recovery mea

[ What is claimed is:] [1.] A deicing fluid recovery system especially adapted for aircraft deicing apparatus, comprising:storage means for storing and mixing a deicing fluid and water mixture;application means for applying said deicing fluid and water mixture to an aircraft for deicing;recovery means for recovering said deicing fluid and water mixture after said deicing application; anda regenerator for dehydrating said recovered deicing fluid and water mixture including:a reboiler tank for holding a quantity of said recovered deicing fluid and water mixture;heating means for heating said recovered deicing fluid and water mixture in said reboiler tank to a temperature above the boiling point of water;a stripping column in fluid communication with said reboiler tank;means operably associated with said stripping column for exhausting water;means for condensing deicing fluid vapor in said stripping column and returning said condensed deicing fluid to said reboiler; andmeans for returning dehydrated deicing fluid from said reboiler to said storage means;means for selectively returning at least some of said water exhausted from said stripping column to said storage means dependent upon a sensed deicing fluid concentration level in said storage means; andmake-up deicing fluid supply means for selectively adding deicing fluid to said storage means dependent upon a sensed deicing fluid concentration level in said storage means.