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单词 Claus process
释义
Claus process

Chemistry
  • A process for obtaining sulphur from hydrogen sulphide (from natural gas or crude oil). It involves two stages. First, part of the hydrogen sulphide is oxidized to sulphur dioxide:

    2H2S+3O22SO2+2H2O

    Subsequently, the sulphur dioxide reacts with hydrogen sulphide to produce sulphur:

    SO2+2H2S3S+2H2O

    The second stage occurs at 300°C and needs an iron or aluminium oxide catalyst.

    This process was patented by Karl Friedrich Claus (1827–1900) in 1883.


Chemical Engineering
  • A two-stage process used for the removal of sulphur from natural gas or crude oil. In the first, hydrogen sulphide is partially oxidized using air to form sulphur dioxide. In the second, the sulphur dioxide is reacted with the hydrogen sulphide in the presence of a catalyst at 300ºC to form elemental sulphur and water vapour:

    2H2S+3O22SO2+2H2OSO2+2H2S3S+2H2O

    It is named after its inventor, chemist Carl Friedrich Claus, who developed the process in 1883 while working on ways of recovering sulphur from the waste calcium sulphide produced in the Leblanc process. He originally used iron ore and later bauxite as the catalyst.


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