Method for removal of acid from compressor oil
AssigneeMainstream Engineering Corporation
InventorsRobert Peter Scaringe, Nidal Abdul Samad, Lawrence Robert Grzyll
Life of this patent
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Abstract
An alcohol, specifically ethanol, methanol and isopropanol, is used to remove acid from a refrigeration system, a heat pump or an air conditioner. The alcohol vaporizes acid, primarily inorganic acid, in the system and, in the filter/dryer, reacts with surfaces or is adsorbed. The alcohol, the quantity of which is determined from the capacity of the filter/dryer, is introduced into the compressor oil sump for thorough mixing with the oil during compressor lubrication.
Claims15
A method of removing inorganic acid, to the extent present, from oil in a vapor compression system comprising the steps of
- introducing an alcohol-containing composition into the system, which composition is a solvent for the inorganic acid but not for the oil,
- separating the composition containing the acid from the oil, and
- removing the separated acid-containing composition from the system.
A method of using alcohol-containing composition to remove inorganic acid from oil in a vapor compression system comprising the steps of introducing the alcohol-containing composition into a vapor compression system, and separating and removing the inorganic acid from the oil.
Dependencies are inferred from the claim text.