无机盐工业
主管:中海油天津化工研究设计院有限公司
主办:中海油天津化工研究设计院有限公司
   中海油炼油化工科学研究院(北京)有限公司
   中国化工学会无机酸碱盐专业委员会
ISSN 1006-4990 CN 12-1069/TQ

无机盐工业 ›› 2020, Vol. 52 ›› Issue (2): 50-53.doi: 10.11962/1006-4990.2019-0103

• 环境·健康·安全 • 上一篇    下一篇

T型分子筛膜的制备及其对含酸乙腈-水的分离性能

臧毅华1,陈赞1(),盛春光1,吴巍1,郑秋红1,汪良明2   

  1. 1. 中海油天津化工研究设计院有限公司,天津 300131
    2. 黑龙江新和成生物科技有限公司
  • 收稿日期:2019-08-26 出版日期:2020-02-10 发布日期:2020-02-26
  • 通讯作者: 陈赞
  • 作者简介:臧毅华(1986— ),男,硕士研究生,工程师,研究方向为无机膜材料的开发与应用;E-mail:maxzyh1986728@126.com。
  • 基金资助:
    天津市科技支撑重点项目(17YFZCGX00310)

Preparation of T-type zeolite membrane and its separation performance on acetonitrile-water containing acid

Zang Yihua1,Chen Zan1(),Sheng Chunguang1,Wu Wei1,Zheng Qiuhong1,Wang Liangming2   

  1. 1. CenerTech Tianjin Chemical Research and Design Institute Co.,Ltd.,Tianjin 300131,China
    2. Heilongjiang Nhu Biotechnology Company Ltd.
  • Received:2019-08-26 Online:2020-02-10 Published:2020-02-26
  • Contact: Chen Zan

摘要:

石化医药行业会产生大量乙腈废液,通过无机分子筛膜分离技术进行回收可以创造可观的经济价值。然而,乙腈废液水含量较高,并且具有一定的酸性,目前应用比较广泛的NaA型分子筛膜不能在该体系下长期使用。使用自制的平均粒径为600 nm的T型分子筛作为晶种,采用真空涂敷法将晶种负载在α-Al2O3载体管表面,在150 ℃下水热晶化16 h制备出T型分子筛膜,并对其做膜性能评价实验。结果表明,自制的T型分子筛膜在进料流量为3.5 L/h、温度为100 ℃条件下对含有1%(质量分数)乙酸和10%水(质量分数)的乙腈混合溶液进行膜分离脱水实验,渗透通量为2.51 kg/(m 2·h);在120 h长时间运行过程中,分离系数保持在2 250以上,T型分子筛膜性能基本保持不变。

关键词: T型分子筛膜, 乙腈, 乙酸, 膜分离

Abstract:

A large amount of acetonitrile waste liquid will be produced in petrochemical and pharmaceutical industries,which can be recovered by inorganic molecular sieve membrane separation technology to create considerable economic value.Howe-ver,acetonitrile waste liquid has high water content and acidity.NaA zeolite membrane can not be used in this system for a long time,which is widely used at present.The self-made T-type zeolite with an average particle size of 600 nm was used as crystal seed.The crystal seed was loaded on the surface of α-Al2O3 carrier tube by vacuum coating method.The T-type zeolite membrane was prepared by hydrothermal crystallization at 150 ℃ for 16 h.And pervaporation evaluation experiments were carried out.The results showed that the pervaporation dehydration of acetonitrile mixed solution containing 1%(mass fraction)acetic acid and 10%(mass fraction) water was carried out by self-made T-type zeolite membrane at 100 ℃.The permeation flux was 2.51 kg/(m 2·h).During 120 h operation,the separation factor maintained above 2 250,and the performance of T-type zeolite membrane remained basically unchanged.

Key words: T-type zeolite membrane, acetonitrile, acetic acid, membrane separation

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