石油炼制与化工 ›› 2017, Vol. 48 ›› Issue (2): 1-5.

• 加工工艺 •    下一篇

利用双极膜电渗析实现ZSM-5分子筛清洁化生产的研究

周丽娜,刘中清,戴泳,罗一斌,舒兴田   

  1. 中国石化石油化工科学研究院
  • 收稿日期:2016-07-11 修回日期:2016-09-20 出版日期:2017-02-12 发布日期:2017-01-17
  • 通讯作者: 周丽娜 E-mail:zhouln.ripp@sinopec.com
  • 基金资助:
    国家科技部863项目

CLEAN PRODUCTION OF ZSM-5 MOLECULAR SIEVE BY BIPOLAR MEMBRANE ELECTRODIALYSIS

    

  1.  
  • Received:2016-07-11 Revised:2016-09-20 Online:2017-02-12 Published:2017-01-17
  • Supported by:
     

摘要: 以双极膜电渗析为离子交换装置,对ZSM-5分子筛的脱钠过程进行研究。结果表明,双极膜电渗析工艺用于ZSM-5分子筛脱钠过程,可以达到分子筛中Na2O质量分数低于0.1%的工业要求,同时能够回收Si、Na和部分模板剂,实现资源再利用。电渗析与铵交换制得的H-ZSM-5分子筛相比较,物化性质和催化性能基本一致,工艺过程清洁环保,水可循环利用,且无氨氮、无含盐废水排放。

关键词: 双极膜电渗析, 脱钠, 回收, 模板剂

Abstract: Sodium removal process of ZSM-5 zeolite was studied by bipolar membrane electrodialysis (EDBM). The results indicate that the zeolite with Na2O content less than 0.1% can be obtained by EDBM, meanwhile Si,Na and part of template agent can be recycled. The EDBM zeolite is equal to the ZSM-5 zeolite by NH4+ exchange method both in physicochemical properties and catalytic performance. The new process is eco-friendly with no ammonia or salty wastewater emission, and the water can be reused.

Key words: bipolar membrane electrodialysis, removal of sodium, recovery, template

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