详细信息
文献类型:期刊文献
中文题名:硝基苯乳液破乳分离技术研究
英文题名:Study on demulsification separation technology for nitrobenzene emulsion
作者:朱华曈[1];金汉强[2];薛峰[2];华兵[2];王金锋[2];崔怀松[2];卢浩[1]
机构:[1]华东理工大学机械与动力工程学院,上海200237;[2]中石化南京化学工业有限公司,江苏南京210048
年份:2023
卷号:43
期号:9
起止页码:145
中文期刊名:现代化工
外文期刊名:Modern Chemical Industry
收录:CSTPCD;;Scopus;北大核心:【北大核心2020】;CSCD:【CSCD_E2023_2024】;
基金:上海市科技计划项目(22QA1402600);国家自然科学基金(52000072)。
语种:中文
中文关键词:酸性硝基苯;粗硝基苯;乳化液;聚结破乳
外文关键词:acidic nitrobenzene;crude nitrobenzene;emulsion;agglomeration demulsification
摘要:针对酸性硝基苯和粗硝基苯的高乳化特征,提出了分步分级的模块化聚结破乳工艺,设计并开展了处理量为100 L/h的实验。结果表明,该工艺可将酸性硝基苯中的酸质量分数由0.94 mg/g降至0.14 mg/g,脱酸率为85.1%;可将粗硝基苯中的水质量分数由1.06%降至0.13%、盐质量浓度由14.39 mg/L降至2.62 mg/L,脱水率和除盐率分别为87.7%和81.8%。该工艺解决了硝基苯乳液破乳难的问题,为硝基苯净化工艺的升级改造提供重要支撑。
In view of the high emulsification characteristics of acidic nitrobenzene and crude nitrobenzene,a step-by-step graded modular agglomerative demulsification process is proposed,and the experiments with a treatment capacity of 100 L·h-1 are designed and carried out.The results show that this process can reduce the mass fraction of acid in acidic nitrobenzene from 0.94 mg·g-1 to 0.14 mg·g-1,with a de-acidification rate of 85.1%;it can reduce the mass fraction of water in crude nitrobenzene from 1.06%to 0.13%and the mass concentration of salt from 14.39 mg·L-1 to 2.62 mg·L-1,with dewatering and desalination rates of 87.7%and 81.8%,respectively.This process overcomes the difficulty in breaking nitrobenzene emulsion,which provides important support for the upgrading of the nitrobenzene purification process.
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