发明授权
US4162956A Coal deashing process having improved solvent recovery techniques 失效
具有改进的溶剂回收技术的煤脱屑工艺

  • 专利标题: Coal deashing process having improved solvent recovery techniques
  • 专利标题(中): 具有改进的溶剂回收技术的煤脱屑工艺
  • 申请号: US887866
    申请日: 1978-03-20
  • 公开(公告)号: US4162956A
    公开(公告)日: 1979-07-31
  • 发明人: Donald E. Rhodes
  • 申请人: Donald E. Rhodes
  • 申请人地址: OK Oklahoma City
  • 专利权人: Kerr-McGee Corporation
  • 当前专利权人: Kerr-McGee Corporation
  • 当前专利权人地址: OK Oklahoma City
  • 主分类号: C10G1/00
  • IPC分类号: C10G1/00 C10G1/04
Coal deashing process having improved solvent recovery techniques
摘要:
An improved coal deashing process wherein coal is mixed with a coal liquefaction process solvent, solubilized and flashed to provide a prepared mixture and the prepared mixture is mixed with a deashing solvent to produce a feed mixture. Thereafter, the feed mixture is separated in a first separation zone into a first heavy fraction comprising insoluble coal products and a first light fraction comprising soluble coal products and solvents. The first light fraction is recovered and a second portion of the deashing solvent is mixed with the first light fraction prior to introduction into a second separation zone wherein an improved separation occurs to produce a second light fraction comprising the solvents and a second heavy fraction comprising the soluble coal products which is recovered. The second light fraction is withdrawn and separated in a third separation zone into a third heavy fraction comprising the liquefaction process solvent for recycle to aid in solubilization of the coal and a third light fraction comprising the deashing solvent for recycle to aid in the production of the feed mixture.
公开/授权文献
信息查询
0/0