Claus process
E883896
The Claus process is an industrial chemical method used to recover elemental sulfur from hydrogen sulfide–rich gas streams, particularly in natural gas and petroleum refining operations.
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
industrial chemical process
ⓘ
sulfur recovery process ⓘ |
| appliedTo |
acid gas from amine treating units
ⓘ
refinery off-gas ⓘ sour natural gas ⓘ |
| byProduct | water vapor ⓘ |
| canBeFollowedBy | tail gas treating process ⓘ |
| catalyticStageTemperatureRange | 200–350 °C ⓘ |
| commerciallyImportantSince | early 20th century ⓘ |
| commonConfiguration |
cold-bed adsorption Claus unit
ⓘ
split-flow Claus unit ⓘ straight-through Claus unit ⓘ |
| contributesTo | production of elemental sulfur for sulfuric acid manufacture ⓘ |
| controls | SO2 to H2S ratio ⓘ |
| developedInCentury | 19th century ⓘ |
| environmentalRole | mitigation of sulfur emissions ⓘ |
| feedstock |
acid gas
ⓘ
hydrogen sulfide ⓘ |
| hasStage |
catalytic stage
ⓘ
thermal stage ⓘ |
| keyReaction |
2 H2S + 3 O2 → 2 SO2 + 2 H2O
ⓘ
2 H2S + SO2 → 3 S + 2 H2O ⓘ |
| mainPurpose | recovery of elemental sulfur ⓘ |
| namedAfter | Carl Friedrich Claus NERFINISHED ⓘ |
| numberOfCatalyticStages | 2–3 GENERATED ⓘ |
| operatesContinuously | true ⓘ |
| operatingPressureRange | near atmospheric to several bar ⓘ |
| overallStoichiometry | 3 H2S + 1.5 O2 → 3 S + 3 H2O ⓘ |
| product | elemental sulfur ⓘ |
| reducesEmissionOf |
hydrogen sulfide
ⓘ
sulfur dioxide ⓘ |
| regulatedBy | air pollution control regulations ⓘ |
| requires |
Claus reactor
ⓘ
combustion air ⓘ combustion chamber ⓘ sulfur condenser ⓘ sulfur pit or sulfur storage ⓘ waste heat boiler ⓘ |
| thermalStageTemperatureRange | 1000–1400 °C ⓘ |
| treats | hydrogen sulfide–rich gas streams ⓘ |
| typicalSO2ToH2SRatio | 1:2 GENERATED ⓘ |
| typicalSulfurRecoveryEfficiency | 94–97 percent GENERATED ⓘ |
| usedInIndustry |
coal gasification plants
ⓘ
natural gas processing ⓘ petrochemical industry ⓘ petroleum refining ⓘ refinery gas treating units ⓘ |
| usesCatalyst |
activated alumina
ⓘ
bauxite ⓘ titanium dioxide ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.