Extraction of aromatics with ethyl acetoacetate
A liquid phase extraction process is described for the dearomatization of a mixed hydrocarbon feed containing aromatic and nonaromatic hydrocarbons consisting of: (a) contacting the mixed feed in an extraction zone with the solvent ethyl acetoacetate at an elevated temperature to provide an aromatic-rich ethyl acetoacetate solvent phase containing the aromatic hydrocarbons, and a raffinate containing primarily non-aromatic hydrocarbons; (b) recovering and cooling the aromatic-rich solvent phase to form an upper phase comprising an aromatic-rich extract containing solvent and aromatic hydrocarbons, and a lower solvent-rich phase containing primarily the ethyl acetoacetate, and residual hydrocarbons; and (c) recovering the aromatic hydrocarbons and the raffinate.
- Assignee:
- Sun Refining and Marketing Co., Philadelphia, PA
- Patent Number(s):
- US 4594148
- OSTI ID:
- 5371150
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400105 -- Separation Procedures
ACETOACETIC ACID ESTERS
AROMATICS
CARBOXYLIC ACID ESTERS
COOLING
ESTERS
EXTRACTION
HYDROCARBONS
ORGANIC COMPOUNDS
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENT PROPERTIES
SOLVENTS
TEMPERATURE DEPENDENCE