METHOD FOR SEPARATING PRODUCTS OF PROPYLENE HYDROFORMYLATION Russian patent published in 2005 - IPC

FIELD: organic chemistry, chemical technology.

SUBSTANCE: technology for separation of hydroformylation products by naphthenate-evaporating schedule of oxo-synthesis. Separation of propylene hydroformylation products after its decolbatization is carried out by a single evaporation under atmosphere pressure with separation of distillate - fraction of butyric aldehydes from the vat residue - cobalt salts solution in high-boiling by-side products. Indicated evaporation with separation of vapor phase from liquid phase is carried out in separator device under atmosphere pressure, at temperature of liquid phase 90-115°C or 130-170°C with reinforced circulation of liquid phase through boiler at the circulation ratio = (3-30):1. Then the successive additional extraction aldehydes and alcohols from the vat residue are carried out by a single evaporation under vacuum. Method provides reducing loss of cobalt catalyst at the stage for separating products of oxidative decolbatization, and improved economic indices.

EFFECT: improved method for separating.

9 ex