Hydroformylation of lower olefins by reaction with carbon monoxide and hydrogen comprises two reaction steps in which fresh reactants are fed to the second reactor and partially reacted

摘要

Hydroformylation of 2-4C olefins by reaction with carbon monoxide and hydrogen in the presence of a catalyst (I) comprises two reaction steps (R1) and (R2) whereby an olefin containing feed, carbon monoxide, hydrogen and a liquid stream from (R1) is fed into (R2) and partially reacted. Hydroformylation of 2-4C olefins by reaction with carbon monoxide and hydrogen in the presence of a hydroformylation catalyst (I) comprises two reaction steps (R1) and (R2) whereby an olefin containing feed, carbon monoxide, hydrogen and a liquid stream from (R1) is fed into (R2) and partially reacted. A liquid feed is removed from (R2) and is separated into a catalyst containing fraction (F1), a product containing fraction (F2) and a non-reacted olefin fraction (F3); at least a portion of (F3) and optionally at least a fraction of (F1) as well as carbon monoxide and/or hydrogen are fed into R1 and reacted in the presence of a catalyst; and a liquid stream is removed from (R1) and fed to (R2).