PROCESS OF CONTROLLING HEAVIES IN A RECYCLE CATALYST STREAM

摘要

A process for workin up a liquid output from a continuous hydroformylation of an olefin feedstock in the presence of a hydroformylation catalyst comprising a rhodium complex having at least one organophosphoric compound as ligand, containing unreacted olefins, alkanes, aldehyde, catalyst liquor and high-boiling by-products; which comprises stripping the liquid product phase with a stripping gas in a product phase stripper, thereby separating a vapor phase containing unreacted olefins, alkanes, aldehyde, from the catalyst residue and high-boiling by-products; recycling at least a part of the residue to the hydroformylation zone; cooling the vapor phase in a product condenser, thereby condensing unreacted olefins, alkanes, aldehyde at least partially out from the stripping gas; and recycling the stripping gas to the product phase stripper; wherein the product phase stripper and the product condenser are operated essentially isobarically.