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US 9,469,586 B2Granted
Production of partially refined waste glycerol
AssigneeReg Life Sciences, LLC
InventorsMyong K. Ko, Perry Y. Liao, Simon Li, Fernando A. Sanchez-Riera
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Abstract
The disclosure relates to a novel glycerol purification process that produces partially refined waste glycerol for a variety of industrial applications. The disclosure encompasses a salt-containing partially refined glycerol composition that is suitable as a fermentation grade glycerol.
Claims28
A process of producing partially refined waste glycerol by refining crude glycerol containing organic impurities, said process comprising:
- deoiling using a hydrophobic solvent to extract organic impurities;
- dewatering by drying at an elevated temperature;
- and
- desalting using a polar solvent to precipitate salt.
1 more element
A process of producing partially refined waste glycerol by refining crude glycerol containing organic impurities, said process comprising:
- subjecting crude glycerol to a hydrophobic solvent to produce a mixture of crude glycerol and hydrophobic solvent;
- and
- separating the mixture of crude glycerol and hydrophobic solvent to produce a deoiled (DO) glycerol and a phase containing hydrophobic solvent and organic impurities.
Dependencies are inferred from the claim text.