发明申请
- 专利标题: MESOPHASE PITCH FOR CARBON FIBER PRODUCTION USING SUPERCRITICAL CARBON DIOXIDE
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申请号: US16532334申请日: 2019-08-05
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公开(公告)号: US20200299588A1公开(公告)日: 2020-09-24
- 发明人: Benjamin L. Goodrich , Pyoungchung Kim , Matthew Targett , Joshua C. Walter
- 申请人: TerraPower, LLC
- 申请人地址: US WA Bellevue
- 专利权人: TerraPower, LLC
- 当前专利权人: TerraPower, LLC
- 当前专利权人地址: US WA Bellevue
- 主分类号: C10C3/08
- IPC分类号: C10C3/08 ; C01B32/05 ; D01F9/15
摘要:
Embodiments of methods for improving mesophase pitch for carbon fiber production using supercritical carbon dioxide are described. The methods improve the relative amount and quality of mesophase pitch in feedstocks, such as coal tar, already having at least some mesophase pitch. One particular method includes performing a sCO2/toluene extraction on the coal tar to obtain a toluene insoluble fraction of the coal tar; mixing the toluene insoluble fraction with sCO2 to obtain a sCO2/toluene insoluble fraction mixture; and extruding the sCO2/toluene insoluble fraction mixture, thereby separating the sCO2 from the toluene insoluble fraction to obtain fibers of mesophase pitch.