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.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Claus process canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T10745907 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Claus process Context triple: [Lacq gas field, sulfurRecoveryProcess, Claus process]
-
A.
Linde process
The Linde process is an industrial gas liquefaction method that enabled large-scale production of liquid air and its components, such as oxygen and nitrogen, revolutionizing refrigeration and gas separation technologies.
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B.
Haber–Bosch process
The Haber–Bosch process is an industrial chemical method for synthesizing ammonia from nitrogen and hydrogen, enabling large-scale fertilizer production and revolutionizing global agriculture.
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C.
Rochow process
The Rochow process is an industrial chemical method for directly synthesizing organosilicon compounds, especially methylchlorosilanes used in silicone production, by reacting methyl chloride with silicon in the presence of a copper catalyst.
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D.
Fischer–Tropsch process
The Fischer–Tropsch process is an industrial chemical method that converts synthesis gas (a mixture of carbon monoxide and hydrogen) into liquid hydrocarbons such as synthetic diesel and other fuels.
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E.
Shanks process for nitrate refining
The Shanks process for nitrate refining is an industrial method developed in the 19th century to extract and purify sodium nitrate from natural nitrate ores, notably those found in the Chilean nitrate fields.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Claus process Target entity description: 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.
-
A.
Linde process
The Linde process is an industrial gas liquefaction method that enabled large-scale production of liquid air and its components, such as oxygen and nitrogen, revolutionizing refrigeration and gas separation technologies.
-
B.
Haber–Bosch process
The Haber–Bosch process is an industrial chemical method for synthesizing ammonia from nitrogen and hydrogen, enabling large-scale fertilizer production and revolutionizing global agriculture.
-
C.
Rochow process
The Rochow process is an industrial chemical method for directly synthesizing organosilicon compounds, especially methylchlorosilanes used in silicone production, by reacting methyl chloride with silicon in the presence of a copper catalyst.
-
D.
Fischer–Tropsch process
The Fischer–Tropsch process is an industrial chemical method that converts synthesis gas (a mixture of carbon monoxide and hydrogen) into liquid hydrocarbons such as synthetic diesel and other fuels.
-
E.
Shanks process for nitrate refining
The Shanks process for nitrate refining is an industrial method developed in the 19th century to extract and purify sodium nitrate from natural nitrate ores, notably those found in the Chilean nitrate fields.
- F. None of above. chosen
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 ⓘ |
| numberOfCatalyticStages | 2–3 ⓘ |
| 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 ⓘ |
| typicalSulfurRecoveryEfficiency | 94–97 percent ⓘ |
| usedInIndustry |
coal gasification plants
ⓘ
natural gas processing ⓘ petrochemical industry ⓘ petroleum refining ⓘ refinery gas treating units ⓘ |
| usesCatalyst |
activated alumina
ⓘ
bauxite ⓘ titanium dioxide ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Claus process Description of subject: 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.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.