METHOD OF PRODUCING SIGNIFICANTLY PURE MONOCHLOROACETIC ACID Russian patent published in 2012 - IPC C07C53/16 C07C51/377 

FIELD: chemistry.

SUBSTANCE: invention relates to use of a loop reactor, having gas and liquid recirculation systems which are connected through the combining nozzle of a reactor ejector, in which gas and liquid circulate in a parallel stream, and the combining nozzle is formed such that, mixing power of at least 50 W/l of the liquid phase can be imparted into the liquid phase, and in which the gas recirculation system has a device for continuous removal of gaseous HCl, formed during the process, from the recirculating gas and returning unreacted hydrogen gas into the mixing nozzle of the ejector of the loop reactor, for selective catalytic hydrogenation of the liquid dichloroacetic acid to monochloroacetic acid.

EFFECT: invention relates to a continuous or periodic method of producing monochloroacetic acid containing less than 0,1 wt % dichloroacetic acid from a liquid mixture of chloroacetic acid, containing monochloroacetic acid and dichloroacetic acid, in which the mixture is mixed with a suspended hydrogenation catalyst and mixed with hydrogen gas, wherein the formed mixture reacts in said loop reactor.

15 cl, 1 dwg, 4 ex