Kinetics of H2S sorbtion on manganese oxide and Mn-Fe-Cu mixed oxide prepared by the Complexation Technique


Caglayan P., Yasyerli S., Ar I., Dogu G., Dogu T.

INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING, vol.4, 2006 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 4
  • Publication Date: 2006
  • Journal Name: INTERNATIONAL JOURNAL OF CHEMICAL REACTOR ENGINEERING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: H2S sorption, manganese based sorbents, breakthrough analysis, deactivation model, HOT-GAS DESULFURIZATION, DEACTIVATION MODEL, TEMPERATURE DESULFURIZATION, REGENERABLE SORBENTS, V-MO, REMOVAL, BED
  • Gazi University Affiliated: Yes

Abstract

Hydrogen sulfide sorption activities of manganese oxide and Mn-Fe-Cu mixed oxide sorbents were examined in a fixed bed reactor. Sulfur retention capacity of Mn-O sorbent was found to be quite high at 600 degrees C both in the absence and presence of hydrogen gas (0.17 and 0.14 g S/g sorbent, respectively). This sorbent has a high porosity and a relatively high surface area. Best regeneration temperature of this sorbent was found as 700 degrees C, with a gas stream containing 6% oxygen in nitrogen. Mn-Fe-Cu mixed oxide sorbent had a lower sulfur retention capacity (0.07 g S/g sorbent). However, both of these sorbents gave quite high initial sorption rate constants, resulting very sharp breakthrough curves. Deactivation model was shown to give good agreement with the experimental H2S breakthrough curves.