Process for the production of sulfur from sulfur dioxide
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United States of America Patent
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Feb 3, 2009
Grant Date -
Dec 28, 2006
app pub date -
Jun 13, 2006
filing date -
Jun 13, 2005
priority date (Note) -
Expired
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Abstract
The reduction of gas streams containing sulfur dioxide to elemental sulfur is carried out by contacting a reducing gas, such as natural gas, methanol or a mixture of hydrogen and carbon monoxide, with recycled sulfur to produce a stream containing hydrogen sulfide that may be reacted with the gas stream that contains sulfur dioxide. Gas streams with a molar concentration of sulfur dioxide from 1 to 100% may be processed to achieve nearly 100% sulfur recovery efficiency.
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