| 微通道连续硝化制备2,4-二硝基氯苯的工艺研究 |
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| 引用本文： | 秦汉锋,陈清,李建昌,龚斌彬,陶彬彬.微通道连续硝化制备2,4-二硝基氯苯的工艺研究[J].染料与染色,2021,58(1):23-27. |
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| 作者姓名： | 秦汉锋 陈清 李建昌 龚斌彬 陶彬彬 |
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| 作者单位： | 浙江闰土股份有限公司,绍兴312369 |
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| 摘 要： | 本文提供了一种利用微通道反应器设备,连续硝化制备2,4-二硝基氯苯的工艺路线.考察了硝化物料配比及硝化反应条件对产物合成的影响,得到一组相对优化的反应条件:混酸配比(ω％)为浓硝酸:浓硫酸:水=27∶71∶2,硝化比为2.2,反应温度为81～85℃,反应压力为0.60～ 0.65 MPa,反应停留时间为4.5～5.5 ...
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| 关 键 词： | 微通道反应器 连续硝化 2 4-二硝基氯苯 2 6-二硝基氯苯 |
Study on Preparation of 2,4-Dinitrochlorobenzene by Continuous Nitrification in Microchannel Reactor |
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| QIN Han-feng,CHEN Qing,LI Jian-chang,GONG Bin-bin,TAO Bin-bin.Study on Preparation of 2,4-Dinitrochlorobenzene by Continuous Nitrification in Microchannel Reactor[J].Ranliao yu Ranse,2021,58(1):23-27. |
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| Authors: | QIN Han-feng CHEN Qing LI Jian-chang GONG Bin-bin TAO Bin-bin |
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| Affiliation: | (Zhejiang Runtu Co.,Ltd.,Shaoxing 312369,Zhejiang China) |
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| Abstract: | A new process was provided for the continuous nitration of 2,4-dinitrochlorobenzene using microchannel reactor equipment.The influence of nitrification material ratio and nitration reaction conditions on product synthesis was investigated,and a set of relatively superior reaction conditions were obtained:mixed acid ratio(ω%)was concentrated nitric acid∶concentrated sulfuric acid∶water=27∶71∶2,nitrification ratio was 2.2,the reaction temperature was 81~85℃,the reaction pressure was 0.60~0.65 MPa,and the reaction residence time was 4.5~5.5 min.The purity and yield of 2,4-nitrochlorobenzene reached 94.5%~95.5%and 94.0%respectively. |
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| Keywords: | microchannel reactor continuous nitrification 2 4-dinitrochlorobenzene 2 6-dinitrochlorobenzene |
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