The reaction between hydrogen sulfide and spherical pellets of zinc oxide

Journal Article · Tue Apr 01 04:00:00 EST 1980 · Ind. Eng. Chem. Process Des. Dev.; (United States)

DOI:https://doi.org/10.1021/i260074a005· OSTI ID:6380365

Gibson, J B; Harrison, D P

The reaction between hydrogen sulfide and spherical pellets of zinc oxide was studied in a microbalance reactor at 375/sup 0/-800/sup 0/C. The gaseous mixture contained 1-6% H/sub 2/S diluted with hydrogen (added to stabilize H/sub 2/S) and nitrogen, with a 5:1 H/sub 2//H/sub 2/S molar ratio. Rapid and almost complete reaction occurred at 600/sup 0/-700/sup 0/C. Near 800/sup 0/C, slow decomposition of ZnO led to a vapor-phase reaction and deposition of nonporous ZnS on the pellet surface, which prevented further reaction. At below 600/sup 0/C, the reaction stopped well before total ZnO conversion was obtained. Experimental time-conversion results for the 600/sup 0/-700/sup 0/C range, where pore diffusion was the controlling resistance, were in good accord with values predicted by the Szekely et al. grain model. The strong deviation from the model predictions at lower temperatures were attributed to the dominant role of grain diffusion resistance. The H/sub 2/S-ZnO reaction is currently used in the desulfurization of hydrocarbon gases for synthesis of ammonia and has been suggested for sulfur removal in SNG processing.

• Research Organization: Louisiana State Univ.
• OSTI ID: 6380365
• Journal Information: Ind. Eng. Chem. Process Des. Dev.; (United States), Journal Name: Ind. Eng. Chem. Process Des. Dev.; (United States) Vol. 19:2; ISSN IEPDA
• Country of Publication: United States
• Language: English

Related Subjects

090120* -- Hydrocarbon Fuels-- Preparation-- (1976-1989)
090320 -- Inorganic Hydrogen Compound Fuels-- Preparation-- (1976-1989)
10 SYNTHETIC FUELS
BENCH-SCALE EXPERIMENTS
CHALCOGENIDES
CHEMICAL REACTIONS
CRYSTAL STRUCTURE
DATA
DESULFURIZATION
EXPERIMENTAL DATA
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INFORMATION
MATHEMATICAL MODELS
MICROSTRUCTURE
NUMERICAL DATA
OXIDES
OXYGEN COMPOUNDS
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE EFFECTS
ZINC COMPOUNDS
ZINC OXIDES