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The Regeneration of Alkalized Alumina.

Authors
Schlesinger-MD; Illig-EG
Source
Chem Eng Symp Ser 67(115):46-51
Link
NIOSHTIC No.
10010259
Abstract
Alkalized alumina can be used for the removal of sulfur dioxide from stack gases. Before the pellets are recycled to the sorption section, they must be regenerated with a reducing gas. Several practical alternatives for regeneration are possible, resulting in single- and multiple-stage mechanisms. Besides the reduction itself, consideration is given to side reactions that can have a deleterious effect on the ability of the sorbent to be reused, its ease of regeneration, and its physical properties. Data were obtained from a bench-scale system designed to study the mechanism and kinetics of the reactions. Regeneration can be accomplished at 600 deg to 700 deg c with hydrogen, carbon monoxide, and their mixtures. When carbon monoxide is used, some of the sulfate is reduced to the sulfide and a second-stage reaction with carbon dioxide is needed to complete regeneration to the reactive oxide. Data from this and other research are being used for the design of a prototype sulfur dioxide-removal plant.
Publication Date
19710101
Document Type
OP;
Fiscal Year
1971
Identifying No.
OP 199-71
Issue of Publication
115
NIOSH Division
PERC;
Source Name
Chem. Eng. Symp. Ser., V. 67, No. 115, PP. 46-51
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division