METHOD OF PRODUCING BUTYL ALDEHYDES IN PRESENCE OF UNMODIFIED COBALT CATALYST Russian patent published in 2010 - IPC C07C47/02 C07C45/50 

FIELD: chemistry.

SUBSTANCE: invention relates to production of butyl aldehydes via hydroformylation of propylene in the presence of unmodified cobalt catalyst at high temperature and pressure with incomplete conversion of propylene, separation of unreacted propylene from the reaction products and recycling it into the process. The hydroformylation products are cooled to 45-50°C at pressure of 20-30 MPa. Unreacted propylene is extracted from the said products through after-cooling into volume-gravity action separator with propylene residence time of not less than 4 minutes at pressure of 0.1-0.2 MPa, with subsequent extraction of unreacted propylene from the gaseous phase of the separation products through compression, cooling and condensation.

EFFECT: method reduces propylene consumption, increases reactor output, simplifies and reduces cost of process engineering.

3 cl, 4 ex