Sugar juice neutralization reactor

The utility model provides a sugar juice neutralization reactor which comprises a sulfitator tail tube, a case, stirrers, lime adding tubes, a channel and an exhaust tube. At least one stirrer and at least one lime adding tube are arranged on the reactor case connected with the sulfitator tail tube, and the case is divided into at least two reaction spaces which are communicated mutually through the channel. Sugar juice flows into the reactor case through the sulfitator after being smoked with sulfur, and then reacts with sulfur dioxide sufficiently by the aid of the stirrers, lime milk is gradually added into the reactor in a staged manner and is stirred to react sufficiently, and finally sulfur dioxide reacts with the lime uniformly. Since the lime milk is added gradually in a staged manner, reaction efficiency of the lime milk and sulfur dioxide in the sugar juice is improved by means of high-speed stirring, the pH (potential of hydrogen) value of the sugar juice is stabilized, purifying efficiency is incr