Refining device for phenolic compounds in medium and low temperature coal tar

The utility model discloses a refining device for phenolic compounds in medium and low temperature coal tar, which comprises a dehydrating tower, a light component and slag removal tower, a light component and slag removal tower slag discharge tank, a phenol tower, an o-cresol tower, a 2, 6-xylenol tower, a m-p-cresol tower, a 2, 5-xylenol tower, a 3, 5-xylenol tower and a 3, 5-xylenol tower slag discharge tank. The device can obtain high-purity phenol, o-cresol, 2, 6-xylenol, m-cresol, p-cresol and other products, realizes the separation of mixed 2, 5-xylenol and mixed 3, 5-xylenol, and solves the problems of large product purity fluctuation, more rectifying tower equipment, high operation cost, frequent blockage of a tower kettle and a reboiler and the like in the existing process. 本实用新型公开了一种中低温煤焦油中酚类化合物的精制装置，包括脱水塔、脱轻脱渣塔、脱轻脱渣塔排渣罐、苯酚塔、邻甲酚塔、2,6-二甲酚塔、间对甲酚塔、2,5-二甲酚塔、3,5-二甲酚塔和3,5-二甲酚塔排渣罐。本装置能够获得高纯度苯酚、邻甲酚、2,6-二甲酚和间对甲酚等产品，实现了混合2,5-二甲酚与混合3,5-二甲酚的分离，解决了现有工艺产品纯度波动大、精馏塔设备多、运行成本高、塔釜及再沸器频繁堵塞等问题。