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EFFECT OF SULFIDATION/OXIDATIVE REGENERATION CYCLE ON THE SOLID STRUCTURAL CHANGES OF SORBENT FOR HIGH-TEMPERATURE REMOVAL OF H2S
Korean Journal of Chemical Engineering, July 1996, 13(4), 427-430(4), 10.1007/BF02705975
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Abstract
In order to investigate the effects of sulfidation/oxidative regeneration cycle on the change of structural properties and removal capacity of sorbent, sulfidation/regeneration cycle was carried out up to 15 times in a fixed-bed reactor. The effluent gases from the fixed-bed reactor were analyzed by gas chromatography, and XRD, SEM, and liquid nitrogen physisorp- tion method were used to characterize the reacted sorbents. The sorbent treated first sulfida- tion/regeneration cycle exhibited maximum specific surface area and the highest H2S removal capacity. Hysteresis of adsorption isothem of the regenerated sorbent reflected the growth of pores of fresh sorbent and pore size distribution confirmed this fact. Furthermore constant H2S removal capacity was maintained up to 15 times of sulfidation/regeneration cycle.
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Lee S, Jotimurugesan K, Stephanopoulos MF, Ind. Eng. Chem. Res., 28(5), 535 (1989)
Lee YS, Kim HT, Yoo KO, Ind. Eng. Chem. Res., 34(4), 1181 (1995)
Lee YS, Park DH, Kim HT, Yoo KO, Korean J. Chem. Eng., 12(1), 23 (1995)
Lee YS, Yoo KO, Gavalas GR, Korean J. Chem. Eng., 8(4), 214 (1991)
Lee YS, Yoo KO, HWAHAK KONGHAK, 32(3), 506 (1994)
Park DH, Lee YS, Kim HT, Yoo KO, HWAHAK KONGHAK, 30(6), 700 (1992)
Sa LN, Focht GD, Ranade PV, Harrison DP, Chem. Eng. Sci., 44(2), 215 (1989)
Tamhankar SS, Bagajewicz GR, Sharma PK, Stephanpoulos MF, Ind. Eng. Chem. Process Des. Dev., 25(2), 429 (1986)
Tamhankar SS, Hasatani M, Wen CY, Chem. Eng. Sci., 36, 1181 (1981)
Yoo KO, "Additive Effect of Sorbents for Removal of Hydrogen Sulfide," Res. Inst. Ind. Sci. Rep., Hanyang Univ., 25, 245 (1986)
Yumura M, Furimsky E, Ind. Eng. Chem. Process Des. Dev., 24(4), 1165 (1985)
