The Reaction Kinetics of Gaseous Alkali Capture by Kaolin in Syngas Atmosphere

Florian Kerscher, Markus Stetka, Hartmut Spliethoff

Publikation: Beitrag in FachzeitschriftArtikelBegutachtung

9 Zitate (Scopus)

Abstract

Alumosilicate minerals are suitable sorbents at high temperatures for removing alkalis in syngas. Thermogravimetric investigations of these sorbents usually focus on the reaction mechanisms. Herein, a crucible arrangement is described that allows evaporation of the alkali source and sorption of gaseous alkali components in one temperature zone. With this experimental setup, kinetic investigations of alkali sorption are possible in a conventional thermobalance. Experiments were performed with sodium chloride as the alkali source and kaolin as the getter material. The reaction rate increased with alkali concentration and showed an exponential dependence on temperature. Thus, the Arrhenius model approach and power law model were selected for mathematical description.

OriginalspracheEnglisch
Seiten (von - bis)1881-1888
Seitenumfang8
FachzeitschriftChemical Engineering and Technology
Jahrgang41
Ausgabenummer9
DOIs
PublikationsstatusVeröffentlicht - Sept. 2018

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