Study on the Regeneration of Copper-Manganese Sorbent for Removal of Sulfur Dioxide from Flue Gases

Autor:	Sven G. Jaeraas, Stephanie Druesne, Marcus F. M. Zwinkels, Emilia N. Bjoernbom
Rok vydání:	1995
Předmět:	Sorbent General Chemical Engineering Inorganic chemistry Oxide chemistry.chemical_element Vanadium Selective catalytic reduction General Chemistry Manganese Copper Industrial and Manufacturing Engineering Flue-gas desulfurization chemistry.chemical_compound chemistry Sulfur dioxide
Zdroj:	Industrial & Engineering Chemistry Research. 34:1853-1858
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie00044a036
Popis:	The work is part of a study on the development of a new method for simultaneous removal of nitrogen oxide (NO) and sulfur dioxide (SO{sub 2}) from the flue gases. The concept is based on a mixture of active components with two different functions: sorption of SO{sub 2} by silica-supported copper(II) oxide (CuO) and manganese(IV) oxide (MnO{sub 2}) and selective catalytic reduction (SCR) of NO with ammonia (NH{sub 3}) in the presence of vanadium(V) oxide (V{sub 2}O{sub 5}). The paper is focused on the reductive regeneration of mixtures of sulfates of manganese and copper, which are formed in the desulfurization step. The reduction of pure unsupported MnSO{sub 4} with hydrogen requires a higher temperature than that for CuSO{sub 4}. Of principal interest for this study is the possibility of decreasing the temperature for the reduction of MnSO{sub 4} in order to facilitate the simultaneous regeneration of the sulfates in the sorbent. The results show that under the selected experimental conditions the temperature for the reduction of the sulfated MnO{sub 2} in the desulfurization sorbents may be significantly lower compared to the temperature for pure MnSO{sub 4}.
Databáze:	OpenAIRE
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