METHOD TO PRODUCE ISOPROPANOL BY LIQUID-PHASE HYDROGENATION Russian patent published in 2013 - IPC C07C31/10 C07C29/145 C07C29/80 C07C39/04 C07C37/08 C07C49/08 C07C45/53 

FIELD: explosives.

SUBSTANCE: method to produce isopropanol is carried out in process of at least two reaction stages of hydrogenation, at the same time each reaction stage includes a reaction zone of hydrogenation, where the hydrogenation product released from the reaction zone of the first reaction stage contains a non-reacted acetone, and a flow of products containing acetone and isopropanol is supplied into the reaction zone of the next reaction stage, at the same time the specified flow of products at the inlet to the reaction zone of the specified next stage has temperature from 60 to 100°C. At the same time the temperature of the flow of products released from the reaction zone of the specified next reaction stage, at the outlet of the specified reaction zone is at least by 40°C higher than the temperature of the flow of products arriving into the specified reaction zone at the inlet to the specified reaction zone, and the temperature in the specified next reaction zone does not exceed 125°C.

EFFECT: method makes it possible to produce isopropanol of high degree of purity.

23 cl, 2 ex, 1 tbl, 1 dwg