Effect of temperature on the reaction of H₂S with a coke

The effect of temperature on reaction of H₂S with carbon structures of a coke were studied in a fixed-bed quartz tube reactor coupled with two parallel detectors, flame photometric detector (FPD) and mass spectrum (MS). The uptake of H₂S with the coke matrix was studied through a sulfur uptake/tempe...

Full description

Saved in:
Bibliographic Details
Published in:Fuel processing technology 2011-09, Vol.92 (9), p.1671-1674
Main Authors: Zhou, Shufen, Yang, Jianli, Liu, Zhenyu, Yan, Jinding, Li, Baoqing
Format: Article
Language:English
Subjects:
Applied sciences
carbon
combustion
desorption
detectors
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fuels
gases
hydrogen sulfide
imbibition
quartz
sulfur
temperature
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The effect of temperature on reaction of H₂S with carbon structures of a coke were studied in a fixed-bed quartz tube reactor coupled with two parallel detectors, flame photometric detector (FPD) and mass spectrum (MS). The uptake of H₂S with the coke matrix was studied through a sulfur uptake/temperature programmed desorption process (SU/TPD) and a temperature programmed oxidation process (TPO). The results show that the sulfur imbibed by a demineralized coke at elevated temperatures is very stable, which can only be decomposed and released to gas phase under combustion conditions. The chemical imbibition of sulfur takes place at an elevated temperature. At relatively lower temperatures, H₂S was adsorbed physically by the sample and then transformed to stable sulfur species. At higher temperatures, the chemical reactions between H₂S and DM-Coke led to the formation of more stable sulfur-containing forms and consequently increased H₂S uptake ability. This is essence of the temperature effect on the uptake of H₂S by a de-mineralized coke. The irregular behavior with the temperature was caused by the different interactions.
ISSN:0378-3820
1873-7188
DOI:10.1016/j.fuproc.2009.07.014