SATURATOR FOR SUGAR-CONTAINING SOLUTION

A saccharose solution is carbonated to produce sugar by continuous purification by a gas phase/liquid phase reaction, the saccharose solution being the liquid phase and CO2 being the gas phase, the CO2 gas as reaction gas being introduced into an elongate reaction vessel (1) disposed vertically, wherein in the upper third of the vessel (1) pretreated circulation liquid, pumped out of a lower part of the vessel (1) and constituting the liquid phase is introduced at a pressure of 150 to 300 kPa into a mixing device (6) contained in the upper third of the vessel (1) and reaction gas is introduced at a pressure of 30 to 50 kPa into the mixing device (6) to mix with the liquid, after which a twist is imparted to the resultant gas/liquid mixture which later is introduced into the lower third of the vessel (1) at a speed of 8 to 30 m/sec., so as to pass into a column of liquid constituting a main reaction zone (26), the direction of flow being deflected in a region below the zone (26) and large bubbles of gas being separated from the mixture, the rapid ascent of rising gas being braked by gas distribution grids (27) also serving to distribute the gas in the form of fine bubbles, a fresh solution of calcium hydroxide and saccharose and/or circulation liquid, as required, being added in the form of a wide jet, and in a tangential direction, to a rotating liquid reservoir level (16) in the upper third of the vessel (1).