Simulation of adiabatic mononitration of aromatic hydrocarbons by weak nitric acid

Authors

  • Анна Александровна Красильникова Institute of Chemical Technology, Volodymyr Dahl’s East Ukrainian National University, Lenina street 31, Rubezhnoye, Luhans'ka oblast, 93010, Ukraine https://orcid.org/0000-0002-5074-8493
  • Сергей Алексеевич Кондратов Institute of Chemical Technology, Volodymyr Dahl’s East Ukrainian National University, Lenina street 31, Rubezhnoye, Luhans'ka oblast, 93010, Ukraine https://orcid.org/0000-0002-1963-0155

DOI:

https://doi.org/10.15587/2312-8372.2015.43667

Keywords:

adiabatic nitration, benzene, toluene, mathematical model, weak acid, pressure, distillate, distillation

Abstract

It is developed an advanced model of the adiabatic nitration in the form of system of ordinary differential equations that investigated the use of nitric acid for the adiabatic nitration of benzene and toluene. It is shown that the holding phase distillation under a residual pressure of 13,33 kPa leads to the distillation of 50-90 % hydrocarbons from a mass due to the heat of nitration. At the same time the number of nitro compounds and water that removed in the distillate is relatively small. These results indicate that nitration mixtures that prepared using nitric acid may in principle be used for the adiabatic nitration of benzene and toluene with heat released in the process distillate after separating from the water can be returned to the nitration step instead of pure hydrocarbon. The still liquor – a mixture of the nitro compound and spent acid – should be allocated for the separation and subsequent stage of drying and strengthening of spent acid for recycle.

Author Biographies

Анна Александровна Красильникова, Institute of Chemical Technology, Volodymyr Dahl’s East Ukrainian National University, Lenina street 31, Rubezhnoye, Luhans'ka oblast, 93010

Postgraduate

Сергей Алексеевич Кондратов, Institute of Chemical Technology, Volodymyr Dahl’s East Ukrainian National University, Lenina street 31, Rubezhnoye, Luhans'ka oblast, 93010

Doctor of Chemical Sciences, Professor, Head of the Department

Department of mathematics and computer technologies

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Published

2015-05-28

How to Cite

Красильникова, А. А., & Кондратов, С. А. (2015). Simulation of adiabatic mononitration of aromatic hydrocarbons by weak nitric acid. Technology Audit and Production Reserves, 3(4(23), 24–28. https://doi.org/10.15587/2312-8372.2015.43667

Issue

Vol. 3 No. 4(23) (2015): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2016 Анна Александровна Красильникова, Сергей Алексеевич Кондратов

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