IMPROVED MULTIPHASE LOW MIXING PROCESSES Russian patent published in 2019 - IPC C07C29/00 B01J8/22 C07H1/00 B01J25/02 

FIELD: chemistry.

SUBSTANCE: invention relates to methods for the continuous production of sugar-alcohol products, including sorbitol, and can be used in the chemical industry. Disclosed is a method for improving a continuous multiphase reaction system comprising a porous nickel catalyst, one or more reactants in the gaseous phase and one or more reagents in the liquid phase, comprising supplying the liquid-phase reactant to the reactor in a target concentration through an inlet and at one or more locations downstream along the reactor in the axial direction of the fluid flow, wherein hydrogen is a gas-phase reactant, and it is used for the hydrogenation of sugar to obtain a sugar-alcohol product, wherein the supply of liquid-phase reactant can be carried out in a concentration greater than the target concentration, provided that the downstream feed does not give a concentration of the liquid reactant in the reactor that exceeds the target concentration.

EFFECT: novel methods of obtaining valuable products, improved in relation to the formation of by-products, catalyst deactivation and yields of the required products are disclosed.

20 cl, 3 ex, 6 tbl, 3 dwg