Comparison of the Reactivity of Different Sodium Compounds and Ca(OH)2 Towards SO2 and Mixtures of SO2 and NOx

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Title:Comparison of the Reactivity of Different Sodium Compounds and Ca(OH)2 Towards SO2 and Mixtures of SO2 and NOx
Creators:
Mocek, Karel
Stejskalová, Květoslava
Bach, Pavel
Lippert, Erich
Bastl, Zdeněk
Spirovová, Ilona
Erdös, Emerich
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 61, 6, pp. 825-836
Uncontrolled Keywords:Waste gases purification, Nitrogen oxides, Dry processes, Sulfur dioxide

Abstract

The reactivity of solid substances towards acid gases (SO<sub>2</sub>, NO<i><sub>x</sub></i>) was studied with a view to finding the best conditions for an efficient removal of the gases. The solids included various sodium compounds (sodium bicarbonate, active soda, sodium carbonate monohydrate, dense soda ash) and Ca(OH)<sub>2</sub>, and the reaction with sulfur dioxide was examined over a broad range of experimental variables (temperature, gas composition). The reactivity of selected samples was also investigated in reactions with gaseous mixtures containing SO<sub>2</sub> and NO<i><sub>x</sub></i> in the dependence on temperature, the SO<sub>2</sub>/NO<i><sub>x</sub></i> and NO/NO<sub>2</sub> ratios and the hydrodynamic conditions of the fixed bed flow reactor. The ESCA and SEM techniques were employed to identify the solid reaction products and to study their evolution as a function of reaction parameters. It was found that with the NaHCO<sub>3</sub> precursor, a simultaneous removal of 90% SO<sub>2</sub> and nearly 50% NO<i><sub>x</sub></i> is feasible. The results indicate that NaHCO<sub>3</sub> shows promise particularly for the purification of waste gases from incinerators and power plants.

Title:Comparison of the Reactivity of Different Sodium Compounds and Ca(OH)2 Towards SO2 and Mixtures of SO2 and NOx
Creators:
Mocek, Karel
Stejskalová, Květoslava
Bach, Pavel
Lippert, Erich
Bastl, Zdeněk
Spirovová, Ilona
Erdös, Emerich
Uncontrolled Keywords:Waste gases purification, Nitrogen oxides, Dry processes, Sulfur dioxide
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:61
Number:6
Page Range:pp. 825-836
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc19960825UNSPECIFIED
ID Code:984
Item Type:Article
Deposited On:06 Feb 2009 17:05
Last Modified:06 Feb 2009 16:05

Citation

Mocek, Karel; Stejskalová, Květoslava; Bach, Pavel; Lippert, Erich; Bastl, Zdeněk; Spirovová, Ilona; Erdös, Emerich (1996) Comparison of the Reactivity of Different Sodium Compounds and Ca(OH)2 Towards SO2 and Mixtures of SO2 and NOx. Collection of Czechoslovak Chemical Communications, 61 (6). pp. 825-836. ISSN 0010-0765

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