发明授权
- 专利标题: Vacuum or steam stripping aromatic oils from petroleum pitch
- 专利标题(中): 从石油沥青真空或蒸汽汽提芳香油
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申请号: US48507申请日: 1979-06-14
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公开(公告)号: US4219404A公开(公告)日: 1980-08-26
- 发明人: Ghazi Dickakian
- 申请人: Ghazi Dickakian
- 申请人地址: NJ Florham Park
- 专利权人: Exxon Research & Engineering Co.
- 当前专利权人: Exxon Research & Engineering Co.
- 当前专利权人地址: NJ Florham Park
- 主分类号: C10C3/02
- IPC分类号: C10C3/02 ; C10C3/00 ; C10C3/08 ; C10C3/10 ; D01F9/155
摘要:
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.degree. C. to about 450.degree. 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.degree. to about 450.degree. 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.
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