Acceptor compositions and method for oxygen enrichment processes

Abstract

Abstract Special oxygen acceptor compositions for the production of oxygen in modified Brin-type processes. The compositions comprise a physical mixture of finely ground barium peroxide and dolomitic quicklime in which the weight percent of the dolomitic quicklime ranges up to about 92 percent. The use of dolomitic quicklime in conjunction with barium peroxide has been found to increase the oxygen production per mole of barium peroxide more than ten-fold. Typical operation conditions for production of oxygen in accord with the process utilizing the new material are 1-50 psia, at 1,350*-1,600*F during the reduction (oxygen production) half of the cycle, and 40-200 psia, at 1,300*-1,550*F during the oxidation half of the cycle. The cycle time for production is substantially decreased. The particle size of the barium peroxide in the composition mixture is preferably smaller than about 100 mesh, while the dolomitic quicklime is preferably smaller than about 40 mesh. The dolomitic quicklime must be prepared under conditions to insure that the final carbonate content of the dolomitic quicklime-barium peroxide mixture is such that the mole ratio of carbon dioxide to barium peroxide is less than 1.0. The composition may be in various forms: powder, granular, pelletized, coated on saddle supports and the like. In addition to increased oxygen production per mole of barium peroxide and reduction in cycle times, a significant reduction in the amount of barium oxides required to produce oxygen at any given rate is exhibited by the compositions.

Inventors

• 👤 J Huebler
• 👤 L Massey
• 👤 P Tarman

Bibliographic Details