Effect of oxygen enrichment in air on acid gas combustion under Claus conditions

Handle URI:
http://hdl.handle.net/10754/564790
Title:
Effect of oxygen enrichment in air on acid gas combustion under Claus conditions
Authors:
Ibrahim, Salisu; Selim, Hatem; Al Shoaibi, Ahmed Sultan; Gupta, Ashwani K.
Abstract:
Results are presented to examine the combustion of acid gas (H2S and CO2) in hydrogen-fueled flames using a mixture of oxygen and nitrogen under Claus conditions (Φ = 3). Specifically the effect of oxygen enrichment in the above flames is examined. The compositions of acid gas examined are100% H2S and 50% H2S/50% CO2 with different percentages of oxygen enrichment (0%, 19.3% and 69.3%) in the oxygen/nitrogen mixtures. The results revealed that combustion of acid gas formed SO2 wherein the mole fraction of SO2 increased to an asymptotic value at all the oxygen concentrations examined. In addition, increase in oxygen enrichment of the air resulted in increased amounts of SO2 rather than the formation of more desirable elemental sulfur. In case of 50% H2S/50% CO2 acid gas, carbon monoxide mole fraction increased with oxygen enrichment which is an indicator to the availability of additional amounts of oxygen into the reaction pool. This gas mixture resulted in the formation of other sulfurous–carbonaceous compounds (COS and CS2) due to the presence of carbon monoxide. The results showed that the rate of COS formation increased with oxygen enrichment due to the availability of higher amounts of CO while that of CS2 reduced. The global reactions responsible for this observed phenomenon are presented.
KAUST Department:
Clean Combustion Research Center; Chemical and Biological Engineering Program
Publisher:
Elsevier BV
Journal:
Applied Energy
Conference/Event name:
11th International Energy Conversion Engineering Conference, IECEC 2013
Issue Date:
Sep-2013
DOI:
10.1016/j.apenergy.2013.03.026
Type:
Conference Paper
Appears in Collections:
Conference Papers; Chemical and Biological Engineering Program; Clean Combustion Research Center

Full metadata record

DC FieldValue Language
dc.contributor.authorIbrahim, Salisuen
dc.contributor.authorSelim, Hatemen
dc.contributor.authorAl Shoaibi, Ahmed Sultanen
dc.contributor.authorGupta, Ashwani K.en
dc.date.accessioned2015-08-04T07:16:02Zen
dc.date.available2015-08-04T07:16:02Zen
dc.date.issued2013-09en
dc.identifier.doi10.1016/j.apenergy.2013.03.026en
dc.identifier.urihttp://hdl.handle.net/10754/564790en
dc.description.abstractResults are presented to examine the combustion of acid gas (H2S and CO2) in hydrogen-fueled flames using a mixture of oxygen and nitrogen under Claus conditions (Φ = 3). Specifically the effect of oxygen enrichment in the above flames is examined. The compositions of acid gas examined are100% H2S and 50% H2S/50% CO2 with different percentages of oxygen enrichment (0%, 19.3% and 69.3%) in the oxygen/nitrogen mixtures. The results revealed that combustion of acid gas formed SO2 wherein the mole fraction of SO2 increased to an asymptotic value at all the oxygen concentrations examined. In addition, increase in oxygen enrichment of the air resulted in increased amounts of SO2 rather than the formation of more desirable elemental sulfur. In case of 50% H2S/50% CO2 acid gas, carbon monoxide mole fraction increased with oxygen enrichment which is an indicator to the availability of additional amounts of oxygen into the reaction pool. This gas mixture resulted in the formation of other sulfurous–carbonaceous compounds (COS and CS2) due to the presence of carbon monoxide. The results showed that the rate of COS formation increased with oxygen enrichment due to the availability of higher amounts of CO while that of CS2 reduced. The global reactions responsible for this observed phenomenon are presented.en
dc.publisherElsevier BVen
dc.titleEffect of oxygen enrichment in air on acid gas combustion under Claus conditionsen
dc.typeConference Paperen
dc.contributor.departmentClean Combustion Research Centeren
dc.contributor.departmentChemical and Biological Engineering Programen
dc.identifier.journalApplied Energyen
dc.conference.date14 July 2013 through 17 July 2013en
dc.conference.name11th International Energy Conversion Engineering Conference, IECEC 2013en
dc.conference.locationSan Jose, CAen
dc.contributor.institutionDepartment of Mechanical Engineering, University of Maryland, College Park, MD 20742, United Statesen
dc.contributor.institutionUniversity of Maryland, College Park, MD, United Statesen
dc.contributor.institutionThe Petroleum Institute, Abu Dhabi, Saudi Arabiaen
kaust.authorSelim, Hatemen
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