Chemistry of inorganic compounds – Modifying or removing component of normally gaseous mixture – Carbon dioxide or hydrogen sulfide component
Reexamination Certificate
2003-11-28
2008-09-16
Vanoy, Timothy C (Department: 1793)
Chemistry of inorganic compounds
Modifying or removing component of normally gaseous mixture
Carbon dioxide or hydrogen sulfide component
C423S228000, C423S229000, C423S230000, C423S242100, C423S242700, C423S243010, C423S244010, C048S127300, C048S127500
Reexamination Certificate
active
07425314
ABSTRACT:
A process for the removal of hydrogen sulfide and mercaptans from a gas stream containing a high ratio of mercaptans to hydrogen sulfide, wherein the first step removes hydrogen sulfide by washing the gas stream with an aqueous washing solution comprising water, a physical solvent and a chemical solvent. The first removal step is followed by a second removal step by which mercaptans are removed from the washed gas stream by means of molecular sieves.
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Miller Leonard P.
Shell Oil Company
Stewart Charles W.
Vanoy Timothy C
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