Rectification device for refining crude phenol

The invention relates to the technical field of rectification devices, and provides a rectification device for refining crude phenol, which comprises a rectification tower, the rectification tower is provided with a tower cavity, the tower cavity is provided with a feed inlet, a liquid reflux inlet, a gas inlet, a tower top gas outlet and a tower bottom liquid outlet; the liquid flow guide pipe is arranged in the tower cavity, the liquid flow guide pipe is provided with an opening, and the two ends of the liquid flow guide pipe are communicated with the liquid reflux inlet and the tower bottom liquid outlet respectively; a plurality of upper tower plates and a plurality of lower tower plates, wherein the upper tower plates and the lower tower plates are alternately arranged on the liquid guide pipe. According to the technical scheme, the problems that in the prior art, a plate type rectifying tower and a filler type rectifying tower cannot meet the requirement for gas-liquid mass transfer needed by crude phen