• US 20100081804A1
  • Filed: 10/16/2006
  • Published: 04/01/2010
  • Est. Priority Date: 10/17/2005
  • Status: Active Grant
First Claim
Patent Images

1. A process for continuously hydrogenating unsaturated compounds, in whicha) particles of a first hydrogenation catalyst are suspended in a liquid phase in which an unsaturated compound is dissolved,b) the liquid phase, in the presence of a hydrogenous gas at a first partial hydrogen pressure and at a first temperature, is conducted through a packed bubble column reactor in cocurrent counter to the direction of gravity,c) the effluent from the bubble column reactor is sent to a gas-liquid separation,d) the liquid phase from step c) is sent to a crossfiltration to obtain a retentate and a filtrate,e) the retentate is recycled into step b),f) the filtrate, in the presence of a hydrogenous gas at a second partial hydrogen pressure and at a second temperature, is passed over a bed of a second hydrogenation catalyst.

View all claims

    Thank you for your feedback