- Title
- Removal of sulfur at high temperatures using iron-based sorbents supported on fine coal ash
- Creator
- Xie, Wei; Chang, Liping; Wang, Dehai; Xie, Kechang; Wall, Terry; Yu, Jianglong
- Relation
- Fuel Vol. 89, Issue 4, p. 868-873
- Publisher Link
- http://dx.doi.org/10.1016/j.fuel.2009.01.006
- Publisher
- Elsevier
- Resource Type
- journal article
- Date
- 2010
- Description
- This paper deals with the simultaneous removal of H₂S and COS in the temperature range of 400–650 °C at 1 bar by using iron-based sorbents. The iron-based sorbents were prepared using iron oxide and cerium oxide with coal fine ash as the support. Simulated coal gas was used in the sulfidation experiments and 5% O₂ in N₂ gas was used for regeneration of sorbents. Both sulfidation and regeneration experiments have been carried out using a fixed-bed quartz reactor. The product gases were analyzed using a GC equipped with a TCD and a FPD. The results demonstrated that both H₂S and COS can be effectively reduced using the iron-based sorbents supported on fine coal ash. XRD analysis shows that Fe₁₋ᵪS phase has formed during sulfidation indicating a high sulfur capacity of the sorbent. The mechanism of the removal of COS simultaneously with H₂S is also discussed.
- Subject
- hot coal gas desulfurization; hydrogen sulfide; COS; iron-based sorbents; sorbent support
- Identifier
- http://hdl.handle.net/1959.13/930730
- Identifier
- uon:10910
- Identifier
- ISSN:0016-2361
- Language
- eng
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