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Filtering or dewaxing is the process of recovering waxy compounds from the production of hydrocarbon-based oils. By removing waxy compounds from oils, it improves its quality and desirability. Liquid ring vacuum pumps are pulling vacuum on continuously rotating disc or drum type filters that may contain inert nitrogen gas with chilled Methyl Iso-Butyl Ketone [MIBK] solvent. If higher vacuum levels are required, then a combination of a mechanical blower and liquid ring vacuum pumps is selected for this application. NASH liquid ring vacuum pumps provide reliable, low maintenance operation for solvent dewaxing applications, and can utilize different seal liquids which handle carryover.
