Vacuum or steam stripping aromatic oils from petroleum pitch
Patent
·
OSTI ID:6813620
The present invention contemplates a process for preparing a feedstock for carbon artifact manufacture comprising treating a carbonaceous pitch, which has at least a portion of the polycondensed aromatic oils normally present in the pitch removed , at temperatures in the range generally of from about 350/sup 0/C to about 450/sup 0/C and for times ranging from several minutes to about 10 hours. Optionally an isotropic carbonaceous pitch is heated at temperatures in the range of about 350/sup 0/ to about 450/sup 0/C while simultaneously vacuum stripping the pitch to remove at least a portion and generally greater than 40% of the aromatic oils in the pitch thereby simultaneously removing the aromatic oils from the pitch while conducting the heat treatment.
- Assignee:
- Exxon Research And Engineering Co
- Patent Number(s):
- US 4219404
- OSTI ID:
- 6813620
- Country of Publication:
- United States
- Language:
- English
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