Formation of dl-limonene in used tire vacuum pyrolysis oils. [dipentene]
- Univ. Lavel, Sainte-Foy, Quebec (Canada)
- CANMET, Varennes, Quebec (Canada)
Tire recycling has become an important environmental issue recently due to the huge piles of tires that threaten the environment. Thermal decomposition of tire, a synthetic rubber material, enables the recovery of carbon black and liquid hydrocarbon oils. Both have potential economic values. Pyrolysis oils obtained under vacuum conditions contain a significant portion of a volatile, naptha-like fraction with an octane number similar to petroleum naphtha fraction, in addition, contains approximately 15% limonene. Potential applications of vacuum pyrolysis oil and carbon black have been investigated. However, the process economics is greatly influenced by the quality of the oil and carbon black products. This paper discusses limonene formation during used tire vacuum pyrolysis and its postulated reaction mechanism. The limonene separation method from pyrolysis oil, as well as its purification in laboratory scale, and structural characterization are discussed. Large-scale limonene separation and purification is under investigation.
- OSTI ID:
- 5379964
- Journal Information:
- Environmental Science and Technology; (United States), Vol. 25:9; ISSN 0013-936X
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
PENTENES
SYNTHESIS
PYROLYTIC OILS
SEPARATION PROCESSES
TIRES
PYROLYSIS
BENCH-SCALE EXPERIMENTS
BENZENE
BY-PRODUCTS
CARBON BLACK
ECONOMICS
FLOWSHEETS
TOLUENE
XYLENES
ALKENES
ALKYLATED AROMATICS
AROMATICS
CARBON
CHEMICAL REACTIONS
DECOMPOSITION
DIAGRAMS
ELEMENTS
FUELS
HYDROCARBONS
NONMETALS
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PYROLYSIS PRODUCTS
SYNTHETIC FUELS
THERMOCHEMICAL PROCESSES
100200* - Synthetic Fuels- Production- (1990-)
102000 - Synthetic Fuels- Products & By-Products- (1990-)