PROCESS FOR THE PRODUCTION OF ALDEHYDES BY HYDROFORMYLATION

摘要

PCT No. PCT/GB87/00408 Sec. 371 Date Nov. 21, 1988 Sec. 102(e) Date Nov. 21, 1988 PCT Filed Jun. 12, 1987 PCT Pub. No. WO88/00179 PCT Pub. Date Jan. 14, 1988.Continuous process for hydroformylation of olefins containing, typically, from 6 to 20 carbon atoms to produce the corresponding aldehydes. The rate of formation of high boiling aldehyde condensation products is minimized by use of a high boiling inert solvent whose boiling point, at the pressure prevailing in the product recovery zone, lies intermediate between that of the highest boiling aldehyde product produced in the hydroformylation reaction and that of the ligand, as well as by maintaining the concentration of product aldehyde at or below a predetermined minor amount. In this way the length of a production run can be significantly extended before it becomes necessary to shut down the plant due to accumulation of high boiling aldehyde condensation products.