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Expired Canadian patentCanada

Process for producing a fuel gas and sulfur from a hydrocarbon fuel

CA 1102526 A · Owner: Foster Wheeler Energy Corporation · Inventors: Daman, Ernest L.

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Abstract From the Canadian patent

A process for producing a fuel gas and sulfur from a hydrocarbon fuel wherein a fuel oil containing sulfur is at least partially combusted in a fluidized bed of sorbent material which produces a substantially sulfur free fuel gas and a sulfided sorbent. The sulfided sorbent is passed to a second fluidized bed which regenerates the sulfided sorbent and produces a sulfur dioxide containing gas. The latter gas is contacted with granular coal in the presence of steam to reduce the sulfur dioxide to elemental sulfur.

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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 June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 28, 1977
GrantedJune 9, 1981
Term endedJune 9, 1998
Patent numberCA 1102526 A
Classification (IPC)C01B17/06 +2 more

Timeline

Timeline From CIPO dates

1978198119841987199019931996Application filedSep 28, 1977Patent grantedJune 9, 1981Term endedJune 9, 1998

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.