Organic compounds -- part of the class 532-570 series – Organic compounds – Heavy metal containing
Patent
1986-11-06
1987-07-07
Terapane, John F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Heavy metal containing
556145, 102291, 55 68, B01D 4600
Patent
active
H00003050
ABSTRACT:
An effective method to recover the catalyst material, ferrocene or its deatives, from high burn rate propellants comprises the method which uses compressed gas in the form of a near critical liquid to extract, remove, and recover the specific catalyst material directly from rocket motors or from chunks of cut propellant.
The method comprises introducing compressed carbon dioxide into a pressure vessel containing the propellant from which the catalyst material is to be recovered. The carbon dioxide as a near critical liquid (NCL) is circulated within the pressure vessel where extraction of ferrocene or its derivatives directly from the propellant takes place. The NCL with extractibles is transported to a warming and recovery zone where the extractibles are recovered after the carbon dioxide is volatilized and returned for recycling, compressing, and further extracting after being adjusted to a near critical liquid.
Analytical data indicates that from 99.8% to 100% of ferrocence or its derivatives is readily recoverable from propellant which is undergoing demilitarization after it is determined to have burning rate, sensitivity, or other measureable changes to be out of system specification. After recovery of the high dollar value catalyst material, the propellant can be safely handled for removal using conventional water jet apparatus to cut and remove the propellant for reclamation of any of the propellant ingredients.
REFERENCES:
"J & W High Pressure Soxhlet Extractor", Feb. 2, 1984.
"Supercritical Extraction" by Air Products and Chemicals, Inc.
Melvin William S.
Mitchell Porter H.
Bush Freddie M.
Garvin, Jr. John C.
Jorgensen Eric
Terapane John F.
The United States of America as represented by the Secretary of
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