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Na_2O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。
Sodium removal process of ZSM-5 zeolite was studied by bipolar membrane electrodialysis （EDBM）. The results indicate that the zeolite with Na20 content less than 0.1% can be obtained by ED- BM, 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.
出处
《石油炼制与化工》
CAS
CSCD
北大核心
2017年第2期1-5,共5页
Petroleum Processing and Petrochemicals
基金
国家高技术研究发展计划(863计划)项目(2015AA03A601)
关键词
双极膜电渗析
脱钠
回收
模板剂
bipolar membrane eleetrodialysis
removal of sodium
recovery
template
