IMPROVED METHOD FOR HYDROFORMYLATION Russian patent published in 2017 - IPC C07C45/50 C07C47/02 

FIELD: chemistry.

SUBSTANCE: present invention relates to at least a two-step method of exothermic hydroformylation. Method includes following stages: (a) reacting hydroformylation reactants exothermically in a first reaction stage in a fluid reaction mixture to form a reaction product; (b) transferring a process stream of fluid reaction mixture from a reaction stage to one or more later and separate reaction stages for further exothermic, product-forming reaction and then to product recovery unit operations; (c) transferring a heat transfer stream of reaction mixture from a reaction stage to an external heat exchanger where it is cooled and dividing cooled stream into multiple cooled reaction mixture streams; (d) transferring a cooled reaction mixture stream from step (c) back into same reaction stage from which it was removed to cool reaction mixture in that reaction stage; (e) transferring at least one cooled reaction mixture stream from step (c) into and through heat exchange means that cool a different reaction stage, and returning it to same reaction stage from which it is removed; and (f) separating and recovering a reaction product from reaction mixture and optionally recycling at least some reaction mixture components to reaction mixture in a reaction stage.

EFFECT: disclosed method enables to optimise control of process temperature and minimise pollution of reaction mixture due to cooling medium leakage.

15 cl, 4 dwg, 1 ex