Refrigeration – Processes – Separating or preventing formation of undesirables
Patent
1994-04-14
1995-06-20
Sollecito, John M.
Refrigeration
Processes
Separating or preventing formation of undesirables
62 18, 95119, 95142, F25B 4700
Patent
active
054252423
ABSTRACT:
A process and apparatus for the recovery and purification of a contaminated refrigerant withdrawn from a refrigeration or refrigerant recovery system which employs a compressor and an adsorbent selective for the adsorption of halogenated hydrocarbons. The adsorbent is selected from the group consisting of silicalite, faujasites, steamed and rare earth exchanged zeolite Y, mordenite, ZSM-5 and mixtures thereof, and more particularly the group consisting of a low cerium rare earth exchanged zeolite Y-84, a low cerium rare earth exchanged zeolite LZ-210, Breck Structure Six, ECR-32, and mixtures thereof. A significant increase in the capacity of these adsorbents over conventional adsorbents combined with the use of novel process steps to recover, purify and return a purified refrigerant to the refrigeration system result in significant cost savings at reduced risk of release of halogenated hydrocarbons to the environment.
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Cohen Alan P.
Dunne Stephen R.
Staniulis Mark T.
McBride Thomas K.
Silverman Richard P.
Sollecito John M.
Tolomei John G.
UOP
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