Alcohol synthesis process

Claim 1

IN A CARBONYLATION PROCESS WHEREIN OLEFINS, CARBON MONOXIDE AND HYROGEN ARE CONTACTED IN AN INITIAL CARBONYLATION ZONE WITH A COBALT CARBONYLATION CATALYST UNDER CONDITIONS TO PRODUCE OXYGENATED REACTION PRODUCTS COMPRISING ALDEHYDES, AND WHEREIN SAID REACTION PRODUCTS ARE FURTHER SUBJECTED TO A HYDROGENATION REACTION IN THE PRESENCE OF A HYDROGENATION CATALYST IN A HYDROGENATION ZONE TO PRODUCE ALCOHOLS HAVING ONE MORE CARBON ATOM THAN SAID OLEFINS, AND THE PRODUCTS FROM SAID HYDROGENATION ZONE ARE DISTILLED FROM HIGHER BOILING SECONDARY REACTION PRODUCTS FORMING A BOTTOMS PRODUCT AND SAID ALCOHOLS RECOVERED, THE IMPROVEMENT WHICH COMPRISES RECYCLING AT LEAST A PORTION OF SAID BOTTOMS PRODUCT TO SAID HYDROGENATION ZONE, BLENDING SAID RECYCLED BOTTOMS WITH EFFLUENT FROM SAID CARBONYLATION ZONE AND SUBJECTING SAID BLENDED MATERIAL TO A HYDROGENATION REACTION IN SAID ZONE WHEREBY THE OVERALL YIELD OF ALCOHOL PRODUCT CONTAINING ONE MORE CARBON ATOM THAN SAID OLEFINS IS INCREASED AND THE OVER-ALL YIELD OF BOTTOMS PRODUCT REDUCED.