А theoretical analysis of chemisorption of sulfur (IV) oxide. Rationale for the choice of an efficient mass-exchange apparatus

Authors

  • Віктор Теофілович Яворський Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013, Ukraine
  • Андрій Богданович Гелеш Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013, Ukraine https://orcid.org/0000-0003-3310-0940
  • Іван Євгенійович Яворський Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013, Ukraine https://orcid.org/0000-0002-7310-8288
  • Ярослав Андрійович Калимон Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013, Ukraine https://orcid.org/0000-0002-4080-6274

DOI:

https://doi.org/10.15587/1729-4061.2016.60312

Keywords:

sulfur (IV) oxide, purification of gas emissions, mass-exchange apparatus, chemical adsorption/chemisorption, dust collection, absorbent

Abstract

Since the European Union has tightened its environmental legislation requirements to the maximum allowable industrial emissions, there is a necessity to devise efficient treatment technologies for exhaust SO2-containing gases. The study presents a critical analysis of industrial methods of disposal of sulfur (IV) oxide from exhaust gases. It is proved that the liquid-oxidative method using NaOH as an intermediate absorbent and air oxygen as an oxidant ensures optimal utilization of gases with low concentration of SO2. The analysis of the related references and the performed calculations show that chemical adsorption of SO2 requires high pH and low temperature, whereas oxidation of the chemisorbed SO2 – low pH and high temperature.

The study justifies economic efficiency of combining the operations of dust collection, chemisorption and oxidation of the chemisorbed SO2 in a single unit. A thorough analysis of the existing mass-exchange equipment and the made calculations allow implementing the process. We have suggested new technical solutions and an efficient main unit of a horizontal apparatus with scoop-shaped dispersants that fully meets the physical and chemical characteristics of the above processes. The proposed device facilitates an upstream phase movement, thereby providing the required modes for dust collection, chemisorptions, and SO2 oxidation. The unit has low resistance to mass transfer from the gas and the fluid films. Due to the direct supply of energy to the fluid and the non-stationary mode of dispersion, the apparatus has little hydraulic resistance and low energy costs. The theoretical studies minimize the number of experimental research and scientifically justify the choice of a technologically appropriate mode of purifying exhaust gases from SO2.

Author Biographies

Віктор Теофілович Яворський, Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013

Doctor of Technical Sciences, Professor

Department of Chemistry and Technology of Inorganic Substances

Андрій Богданович Гелеш, Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013

PhD, Associate Professor

Department of Chemistry and Technology of Inorganic Substances

Іван Євгенійович Яворський, Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013

Postrgaduate student

Department of Chemistry and Technology of Inorganic Substances

Ярослав Андрійович Калимон, Lviv Polytechnic National University 12 Bandera str., Lviv, Ukraine, 79013

Doctor of Technical Sciences, Professor

Department of Chemistry and Technology of Inorganic Substances

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Published

2016-02-21

How to Cite

Яворський, В. Т., Гелеш, А. Б., Яворський, І. Є., & Калимон, Я. А. (2016). А theoretical analysis of chemisorption of sulfur (IV) oxide. Rationale for the choice of an efficient mass-exchange apparatus. Eastern-European Journal of Enterprise Technologies, 1(6(79), 32–40. https://doi.org/10.15587/1729-4061.2016.60312

Issue

Vol. 1 No. 6(79) (2016): Technology organic and inorganic substances

Section

Technology organic and inorganic substances

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Copyright (c) 2016 Віктор Теофілович Яворський, Андрій Богданович Гелеш, Іван Євгенійович Яворський, Ярослав Андрійович Калимон

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