Process for removing halogenated aliphatic and aromatic compounds from petroleum products. [Polychlorinated biphenyls; methylene chloride; perchloroethylene; trichlorofluoroethane; trichloroethylene; chlorobenzene]
A process for removing halogenated aliphatic and aromatic compounds, e.g., polychlorinated biphenyls, from petroleum products by solvent extraction. The halogenated aliphatic and aromatic compounds are extracted from a petroleum product into a polar solvent by contracting the petroleum product with the polar solvent. The polar solvent is characterized by a high solubility for the extracted halogenated aliphatic and aromatic compounds, a low solubility for the petroleum product and considerable solvent power for polyhydroxy compound. The preferred polar solvent is dimethylformamide. A miscible polyhydroxy compound, such as, water, is added to the polar extraction solvent to increase the polarity of the polar extraction solvent. The halogenated aliphatic and aromatic compounds are extracted from the highly-polarized mixture of polyhydroxy compound and polar extraction solvent into a low polar or nonpolar solvent by contacting the polyhydroxy compound-polar solvent mixture with the low polar or nonpolar solvent. The halogenated aliphatic and aromatic compounds in the low polar or nonpolar solvent by physical means, e.g., vacuum evaporation. The polar and nonpolar solvents are recovered for recycling. The process can easily be designed for continuous operation. Advantages of the process include that the polar solvent and a major portion of the nonpolar solvent can be recycled, the petroleum products are reclaimable and the cost for disposing of waste containing polychlorinated biphenyls is significantly reduced. 2 tables.
- DOE Contract Number:
- W-7405-ENG-26
- Assignee:
- EDB-83-050947; ERA-08-018329
- Patent Number(s):
- None
- Application Number:
- ON: DE83006886
- OSTI ID:
- 6498153
- Country of Publication:
- United States
- Language:
- English
Similar Records
Process for removing halogenated aliphatic and aromatic compounds from petroleum products
Process for removing polychlorinated biphenyls from soil
Related Subjects
400105* -- Separation Procedures
AMIDES
AROMATICS
CHLORINATED ALIPHATIC HYDROCARBONS
CHLOROFORM
DATA
DIAGRAMS
EXPERIMENTAL DATA
EXTRACTION
FLOWSHEETS
HALOGENATED ALIPHATIC HYDROCARBONS
HALOGENATED AROMATIC HYDROCARBONS
INFORMATION
NUMERICAL DATA
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PETROLEUM PRODUCTS
POLAR COMPOUNDS
RECOVERY
RECYCLING
SEPARATION PROCESSES
SOLVENT EXTRACTION
SOLVENTS