高纯度苯酚精制工艺述评

The Purifying Processes for Production of High Purity Phenol

介绍了近年来国内外3个工业化的苯酚精制工艺——共沸精馏、萃取精馏和离子交换树脂法,并对进一步提高苯酚质量的几种途径进行了评述。为生产高纯度苯酚可采取共沸精馏与萃取或与加胺法的结合,而应用新型酸性催化剂改进苯酚生产和精制工艺应是发展趋势。

Three industrial processes for purifying phenol were introduced, i. e. methods of azeotropic distillation, extractive distillation and ion exchange resin. The approaches for further increasing the purity of phenol were also reviewed. In order to obtain high purity phenol, it may combine the method of azeotropic distillation with extraction or chemical treatment by amine. The developing trend in phenol production and purification are employing some new type of acidic catalysts.