Method for substantially complete removal of hydrogen sulfide from sulfur bearing industrial gases
CA 1091428 A · Owner: Bethlehem Steel Corporation · Inventors: Kwasnoski, Daniel; Tarhan, Mehmet O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Invention Hydrogen sulfide is substantially completely removed from a sulfur bearing industrial gas stream by absorbing the H2S into a liquid absorbent stripping the, absorbent of absorbed H2S and reacting it with SO2 in a ratio of H2S/SO2 greater than the stoichiometric ratio of 2.0:1.0 to produce elemental sulfur and water leaving a, tall gas containing an excess of hydrogen sulfide but no sulfur dioxide. At least the last stage of the reaction is carried out in a liquid reaction medium at a temperature not i greater than 160° C. The excess H2S assures complete reduction at these temperatures of all SO2 to elemental sulfur. The remaining excess H2S is then recycled in the …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted December 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 16, 1997.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.