超重力气提法处理丙烯腈废水.pdf

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化工.进展
2014年第33卷第9期
CHEMICAL INDUSTRY AND ENGINEERING PROGRESS
2501
teccroertecerece
研究开发》
超重力气提法处理丙烯腈废水
薛翠芳2,刘有智小2,焦纬洲
(中北大学山西省超重力化エエ程技术研究中心,山西太原030051:2超重力化工过程山西省重点实验室,
山西太原030051)
摘要:基于常温下气提法处理丙烯腈废水去除率低的问题,提出了超重力强化气提法处理丙浠腈废水的研究思
路。实验研究了超重力因子B、气液比、丙姉腈模拟废水初始浓度等因素对丙姉腈去除率的影响,确定了超重力
单级气提适宣的操作条件,并就去除效果与传统气提法和搅拌法进行对比,着重考察了三级气提后丙烯腈的去
除效果。结果表明:在常温、常压、超重力因子B为50.14、气液比为1300的条件下,超重力单级气提丙烯腈
废水初始浓度为(3000100mgL时,丙烯腈去除率为69,1%,相近条件下较传统气提法去除率提高了1.6倍,较
搅拌法去除率提高了12倍,三级气提时丙烯腩去除率可达97.1%。超重力气提法强化了气液传质过程,实现了
废水中丙烯腈的高效去除,具有较高的经济效益和良好的应用前景
关键词:超重力;气提;废水;纯化;分离
中图分类号:TQ09
文献标志码:A
文章编号:1000-6613(2014)09-2501-05
DOI:10.39695.jss.1000-6613.201-4.09.045
Experimental study on treatment of acrylonitrile waste water by high
gravity air stripping technology
XUE Cuifang, LIU Youzhi
TAO Weizhou
(Research Center of Shanxi Province for High Gravity Chemical Engineering and Technology, North University of
China, Taiyuan 030051, Shanxi, China; Shanxi Province Key Laboratory of Higee-oriented Chemical Engineering
Taiyuan 030051, Shanxi, China)
Abstract: Aiming at lower removal rate of acrylonitrile in wastewater by air stripping at ambient
temperature, it was proposed that high gravity technology enhanced the air stripping process for
treatment of acrylonitrile wastewater. The effects of high gravity factor, gas-liquid ratio and initial
concentration of acrylonitrile wastewater on removal rate of acrylonitrile were studied and the high
gravity single-stage air stripping optimum operating conditions were determined. The removal rate was
compared with those of traditional air stripping and stirring methods. Three-stage air stripping removal
rate was investigated. Under the operational conditions: high gravity factor of 50, gas-liquid ratio of
1300 at ambient temperature and pressure, initial concentration of acrylonitrile wastewater of(3000+
100)mg/L, the single-stage air stripping removal rate of acrylonitrile was 69.1%,1. times and 12 times
higher compared with traditional air stripping and stirring methods respectively. Three-stage air
stripping removing rate of acrylonitrile was 97. 1%. With good economic benefits and prospects, the
gas-liquid mass transfer process was enhanced and the target of efficient removal of acrylonitrile in
waste water was achieved by high gravity air stripping technology.
收稿日期:2014-05-29:修改稿日期:2014-06-1
技术在废水处理中的应用。联系人:刘有智,教授,搏士生导师,研
基金项目:国家自然科学基金项目(21376229)
究内容为超重力场中多相流传质与化学反应。E- mail lyzzhongxin
第一作者:薛翠芳(1989),女,硕士研究生,研究内容为超重力
(@126.com.