发明授权
- 专利标题: Process for the recovery of solvent from solvent-containing cellulosic particles
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申请号: US17771348申请日: 2020-10-21
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公开(公告)号: US12070701B2公开(公告)日: 2024-08-27
- 发明人: Roland Feiner , Thi Huyen Trang Trinh , Christian Sperger
- 申请人: LENZING AKTIENGESELLSCHAFT
- 申请人地址: AT Lenzing
- 专利权人: Lenzing Aktiengesellschaft
- 当前专利权人: Lenzing Aktiengesellschaft
- 当前专利权人地址: AT Lenzing
- 代理机构: Venable LLP
- 优先权: EP 205226 2019.10.25
- 国际申请: PCT/EP2020/079559 2020.10.21
- 国际公布: WO2021/078767A 2021.04.29
- 进入国家日期: 2022-04-22
- 主分类号: B01D11/02
- IPC分类号: B01D11/02 ; D01F13/02
摘要:
A process (100) for the recovery of solvent (1) from solvent-containing cellulosic particles (2) is shown, the process comprising the steps: a) extracting the solvent (1) from the cellulosic particles (2) by means of a liquid extraction medium (3), thereby obtaining a solvent-enriched extraction medium (5), and b) obtaining the recovered solvent (6) from the solvent-enriched extraction medium (5). In order to improve the efficiency of the process, it is proposed that in step a) the solvent (1) is extracted from the cellulosic particles (2) in a continuous flow extraction reactor (4), wherein the extraction medium (3) continuously flows through the extraction reactor (4) to extract the solvent (1) from the cellulosic particles (2).
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