• 专利标题: Process for purifying alkanesulfonic anhydride and process for producing alkanesulfonic acid using the purified alkanesulfonic anhydride
  • 申请号: US16605973
    申请日: 2018-04-18
  • 公开(公告)号: US10730827B2
    公开(公告)日: 2020-08-04
  • 发明人: Juergen WortmannJan SpielmannKatharina FederselFeelly Ruether
  • 申请人: BASF SE
  • 申请人地址: DE Ludwigshafen am Rhein
  • 专利权人: BASF SE
  • 当前专利权人: BASF SE
  • 当前专利权人地址: DE Ludwigshafen am Rhein
  • 代理机构: Oblon, McClelland, Maier & Neustadt, L.L.P.
  • 优先权: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@5a66bee4
  • 国际申请: PCT/EP2018/059864 WO 20180418
  • 国际公布: WO2018/192954 WO 20181025
  • 主分类号: C07C303/44
  • IPC分类号: C07C303/44 C07C303/06
Process for purifying alkanesulfonic anhydride and process for producing alkanesulfonic acid using the purified alkanesulfonic anhydride
摘要:
A process for purifying alkanesulfonic anhydride that includes feeding a stream containing alkanesulfonic anhydride, sulfuric acid, high boilers and residual low boilers into a melt crystallization to form crystals of the alkanesulfonic anhydride suspended in mother liquor, and solid-liquid separation to remove the crystals from the mother liquor.
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