Hydroformylation process

In a hydroformylation process comprising the steps of:

• (1) conducting in a reaction zone a hydroformylation reaction employing a reaction fluid comprising (a) a phosphorus acidic compound, (b) a metal-organophosphorus ligand complex catalyst that comprises a metal of Group 8, 9 or 10 complexed with an organophosphorous ligand, and, optionally, (c) free organophosphorus ligand;
• (2) contacting at least a portion of the reaction fluid with a aqueous extraction fluid to remove at least a portion of the phosphorus acidic impurities;
• (3) at least partially separating in at least one extraction zone at least some of phosphorus acidic compounds from the reaction fluid;
• and (4) removing the phosphorus acidic compound from the at least one extraction zone via an extraction zone aqueous effluent stream;
• the improvement comprising:
• using recycled water from the hydroformylation system or a subsequent processing step in an aldehyde production process wherein the water stream to be recycled contains the product aldehyde which has been subjected to at least one distillation process followed by at least one water/aldehyde phase separation process to produce the aqueous extraction fluid to form at least a portion of the aqueous extraction fluid in step (2).