吸附剂的改性及脱除乙二醇中微量杂质

化工进展

吸附剂的改性及脱除乙二醇中微量杂质

徐涛，刘晓勤，刘定华，姚虎卿

南京工业大学化学化工学院

出版日期:2006-10-25 发布日期:2006-10-25

Modification of adsorbents and their adsorption for micro-amount impurities in ethylene glycol

XU Tao，LIU Xiaoqin，LIU Dinghua，YAO Huqing

College of Chemistry and Chemical Engineering，Nanjing University of Technology

Online:2006-10-25 Published:2006-10-25

摘要/Abstract

摘要： 采用不同类型的吸附剂液相吸附处理乙二醇产品中微量杂质以提高其紫外透光率。实验结果表明采用活性炭进行吸附的效果优于凹凸棒石黏土和活性氧化铝。同时研究了不同改性条件下的活性炭对提高乙二醇紫外透光率的影响，结果显示经高温氨水还原改性后的活性炭吸附剂对乙二醇样品中影响紫外透光率杂质的去除效果最佳，经处理后乙二醇在220 nm、275 nm和350 nm处的紫外透光率值分别为81.23%、91.67%和99.23%，达到纤维级乙二醇标准。

Abstract: As a raw material for making polyesters，ethylene glycol (EG) has a specification of UV transmittance. At present，some impurities that cause commercial ethylene glycol to low UV transmittance have been detected. In this paper，some kinds of commercial adsorbents such as activated carbon，attapulgite clay and activated aluminum oxide were used as adsorbents in liquid phase adsorption to remove the impurities and to improve the UV transmittance of ethylene glycol. It was found that the activated carbon treated with ammonia at a high temperature (800℃) showed the best capability to improve the UV transmittance of ethylene glycol. After adsorption treatment，the UV transmittance of EG sample at maximum absorption wave length of 220 nm，275 nm，350 nm were 81.23%，91.67%，99.23% respectively，meeting the fiber grade EG specification.

徐涛，刘晓勤，刘定华，姚虎卿. 吸附剂的改性及脱除乙二醇中微量杂质 [J]. 化工进展.

XU Tao，LIU Xiaoqin，LIU Dinghua，YAO Huqing. Modification of adsorbents and their adsorption for micro-amount impurities in ethylene glycol[J]. Chemical Industry and Engineering Progree.