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Kinetics of removal of impurities from gases by high pressure adsorption
Author(s) -
Groninger Günter,
Hedden Kurt,
Ramananda Rao B.
Publication year - 1987
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.270100109
Subject(s) - adsorption , molecular sieve , chemistry , kinetics , hydrogen , carbon dioxide , mass transfer , chemical engineering , pressure swing adsorption , impurity , chromatography , thermodynamics , organic chemistry , physics , quantum mechanics , engineering
Among other processes, adsorption is used for the removal of hydrogen sulphide from natural gases. Hereby, competitive adsorption of the different gas components plays an important role, e.g., that of carbon dioxide. Data of equilibrium loading and adsorption kinetics are required for the design of adsorbers, filled with molecular sieve. In order to obtain these data under the prevailing operating conditions, hydrogen sulphide was removed from gas mixtures H 2 S/CH 4 and H 2 S/CO 2 /CH 4 , in a pilot plant, by adsorption on molecular sieve 5A. The equilibrium loading, the height of transfer zone, and the length of unused bed were determined from the measured breakthrough curves of H 2 S. With these data, the breakthrough time and the optimum process conditions were calculated for a practical example.