石油炼制与化工 ›› 2013, Vol. 44 ›› Issue (5): 57-60.

• 加工工艺 • 上一篇    下一篇

脱除环戊烷中微量苯和正己烷的技术研究及其应用

王俐1,2,梁朝林2   

  1. 1. 常州大学石油化工学院
      2. 广东石油化工学院石油加工研究所
  • 收稿日期:2012-08-20 修回日期:2012-11-16 出版日期:2013-05-12 发布日期:2013-06-05
  • 通讯作者: 梁朝林 E-mail:gdmmlclgdmmlcl@163.com
  • 基金资助:

    广东省产学研结合项目“环戊烷发泡剂新技术开发”

STUDY ON TECHNIQUE OF REMOVING TRACE BENZENE AND HEXANE FROM CYCLOPENTANE AND ITS APPLICATION

  • Received:2012-08-20 Revised:2012-11-16 Online:2013-05-12 Published:2013-06-05

摘要: 通过精馏技术可以生产出符合国家标准的工业用环戊烷,但难以达到欧盟标准(苯质量分数不大于0.000 05%,正己烷质量分数不大于0.000 8%)。为了脱除环戊烷中微量的苯和正己烷,开发了精馏-吸附复合技术。经过大量的吸附-脱附试验研究,筛选出普通市售的活性碳纤维-沸石分子筛作为复合吸附剂,并在工业生产流程中增设用于脱除水以及脱除苯和正己烷的两个吸附塔。工业试验结果表明,采用活性碳纤维-沸石分子筛复合吸附剂以及精馏-吸附复合技术可以生产出符合欧盟标准的环戊烷溶剂油;活性碳纤维-沸石分子筛复合吸附剂来源方便、无毒无害、可以循环使用;精馏-吸附复合技术操作简便、安全可靠,值得推广。

Abstract: The industrial cyclopentane satisfied with national standard can be produced by the distillation technique, but it cannot yet meet the European Union standard of the cyclopentane solvent (benzene mass fraction ≤0.00005%, hexane mass fraction ≤0.0008%). In order to remove trace benzene and hexane from cyclopentane, a distillation-adsorption complex technique was exploited. Both active carbon fiber and zeolite molecular sieve purchased from the market are used as composite adsorbents, and both dehydration tower and debenzolization-dehexane tower are set in industrial process. The results of commercial experiments show that cyclopentane solvent met with the European Union standard can be produced by means of both distillation-adsorption complex technique and adsorbents composed of active carbon fiber and zeolite molecular sieve. Both active carbon fiber and zeolite molecular sieve are innocuous and unpoisonous, recyclable, and easy to obtain. The distillation-adsorption complex technique is worthy of being popularized because of its simple, convenient and safty.