Study on the Continuous⁃Flow Nitration Process of Anthraquinone in Microreactor

doi:10.12422/j.issn.1006-396X.2024.01.002

Journal of Petrochemical Universities ›› 2024, Vol. 37 ›› Issue (1): 11-15.DOI: 10.12422/j.issn.1006-396X.2024.01.002

• Petrochemical Engineering • Previous Articles Next Articles

Study on the Continuous⁃Flow Nitration Process of Anthraquinone in Microreactor

Kai ZHU¹(), Zeyu NI¹, Yiping HUANG¹(), Jingjing HUANG¹, Lei CAI², Feng ZHOU², Meng HU¹

^1.China Construction Industrial & Energy Engineering Group Co. ，Ltd. ，Nanjing Jiangsu 210023，China
^2.Faculty of Chemical Engineering，Huaiyin Institute of Technology，Huai，an Jiangsu 223003，China

Received:2023-09-05 Revised:2023-12-09 Published:2024-02-25 Online:2024-02-07
Contact: Yiping HUANG

连续流微反应器内蒽醌硝化反应规律研究

主凯¹(), 倪泽雨¹, 黄益平¹(), 黄晶晶¹, 蔡磊², 周峰², 胡猛¹

^1.中建安装集团有限公司，江苏南京 210023
^2.淮阴工学院化工学院，江苏淮安 223003

通讯作者: 黄益平
作者简介:主凯(1989⁃)，男，博士，高级工程师，从事微反应技术应用方面的研究；E⁃mail：zkhhit@163.com。
基金资助:
中建股份科技研发项目(CSCEC?2021?Z?51);建设系统科技计划项目(Ks2253)

Abstract

Abstract:

Anthraquinone dyes are the second most significant dyes in the dye industry after azo dyes.Nitroanthraquinone prepared by the nitration of anthraquinone,is one of the important raw materials for the synthesis of various types of anthraquinone dyes.In this study,a microreactor with excellent heat and mass transfer properties was utilized to investigate the continuous?flow nitration process of anthraquinone.The effects of key process parameters such as reaction temperature,volume flow rate,molar ratio of nitric acid to anthraquinone,anthraquinone concentration,residence time,and sulfuric acid intensity on the nitration process were examined.The results showed that the competition between mono? and di?nitrification reactions during anthraquinone nitrification was significant, and the adjustment of process parameters would significantly affect the ratio of mono? and di?nitrification products while promoting the conversion rate of anthraquinone.The full use of the advantages of microreactors to precisely regulate the process parameters is an effective measure to improve the selectivity of the target nitration product.

Key words: Microreactor, Anthraquinone, 1?Nitroanthraquinone, Nitration

摘要：

蒽醌类染料是染料行业用量仅次于偶氮染料的第二大类染料，通过蒽醌硝化反应制备的硝基蒽醌是合成各类蒽醌类染料的重要原料之一。采用热质传递性能优异的微反应器，研究了蒽醌连续硝化反应过程中反应温度、蒽醌体积流量、n（HNO₃）/n（蒽醌）、蒽醌浓度、停留时间及硫酸质量分数等关键工艺参数对蒽醌硝化反应的影响。结果表明，在蒽醌硝化反应过程中，一硝化和二硝化反应竞争显著；调节过程工艺参数，在促进蒽醌转化率的同时，会显著影响一硝化和二硝化产物的比例。充分利用微反应器的优势精确调控过程参数，是提高单一硝化产物选择性的有效措施。

关键词: 微反应器, 蒽醌, 1?硝基蒽醌, 硝化

CLC Number:

TQ61

Kai ZHU, Zeyu NI, Yiping HUANG, Jingjing HUANG, Lei CAI, Feng ZHOU, Meng HU. Study on the Continuous⁃Flow Nitration Process of Anthraquinone in Microreactor[J]. Journal of Petrochemical Universities, 2024, 37(1): 11-15.

主凯, 倪泽雨, 黄益平, 黄晶晶, 蔡磊, 周峰, 胡猛. 连续流微反应器内蒽醌硝化反应规律研究[J]. 石油化工高等学校学报, 2024, 37(1): 11-15.

Figures/Tables 7

Fig.1 Schematic diagram of the experimental setup

Fig.2 Effect of reaction temperature on the nitration of anthraquinone in microreactor

Fig.3 Effect of volumetric flow rate of anthraquinone on the nitration of anthraquinone

Fig.4 Effect of molar ratio of nitric acid to anthraquinone on the nitration of anthraquinone

Fig.5 Effect of concentration of anthraquinone on the nitration of anthraquinone

Fig.6 Effect of residence time on the nitration of anthraquinone

Fig.7 Effect of sulfuric acid mass fraction on the nitration of anthraquinone

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Study on the Continuous⁃Flow Nitration Process of Anthraquinone in Microreactor

连续流微反应器内蒽醌硝化反应规律研究

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References 17

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