发明授权
US5225072A Processes for the separation of aromatic hydrocarbons from a hydrocarbon mixture 失效
从烃混合物中分离芳烃的方法

  • 专利标题: Processes for the separation of aromatic hydrocarbons from a hydrocarbon mixture
  • 专利标题(中): 从烃混合物中分离芳烃的方法
  • 申请号: US563138
    申请日: 1990-08-03
  • 公开(公告)号: US5225072A
    公开(公告)日: 1993-07-06
  • 发明人: Jose A. Vidueira
  • 申请人: Jose A. Vidueira
  • 申请人地址: IL Des Plaines
  • 专利权人: UOP
  • 当前专利权人: UOP
  • 当前专利权人地址: IL Des Plaines
  • 主分类号: B01D3/40
  • IPC分类号: B01D3/40 C07C7/08 C10G7/08
Processes for the separation of aromatic hydrocarbons from a hydrocarbon
mixture
摘要:
Processes are disclosed for the separation of aromatic hydrocarbons from feedstreams containing mixtures of aromatic and non-aromatic hydrocarbons using extractive distillation with an aromatic selective solvent in order to separate the aromatic hydrocarbons from the non-aromatic hydrocarbons. A rich solvent stream comprising the aromatic hydrocarbons and solvent is withdrawn from the extractive distillation column and passed to a steam stripping column to provide a regenerated lean solvent stream, a side-cut stream comprising the aromatic hydrocarbons and a stripper overhead stream comprising non-aromatic hydrocarbons which are passed as a reflux stream to the extractive distillation column. Various solvents are disclosed and an especially preferred solvent is sulfolane.
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