Patents by Inventor Morten Thellefsen

Morten Thellefsen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Process for removal of SOfrom off-gases by reaction with HO
    Patent number: 7776299
    Abstract: A process for removal of SO2 in off-gases having a temperature of 30-150° C. and containing 0.001-1 vol % SO2 in which the SO2 is oxidised to H2 SO4 by spraying an aqueous solution of H2O2 into the off-gas upstream of an aerosol filter removing the produced sulphuric acid from the off-gas.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: August 17, 2010
    Assignee: Haldor Topsøe A/S
    Inventors: Peter Schoubye, Kurt Agerbæk Christensen, Morten Thellefsen Nielsen
  • Process for the recovery of sulfuric acid
    Patent number: 7595035
    Abstract: Process for the recovery of sulfuric acid comprising: (a) contacting a stream containing sulfuric acid vapor and/or sulfur trioxide in an absorption stage with a ionic liquid absorbent, (b) withdrawing a gas substantially free of sulfuric acid vapor and/or sulfur trioxide from said absorption stage, (c) withdrawing a stream comprising the ionic liquid absorbent from said absorption stage, in which said ionic liquid absorbent contains sulfuric acid, (d) recovering sulfuric acid from said ionic liquid absorbent by passing the stream of step (c) through a separation stage, (e) withdrawing from the separation stage (d) a stream rich in sulfuric acid, (f) withdrawing from the separating step (d) a ionic liquid absorbent stream in which said ionic liquid absorbent contains sulfuric acid and returning said stream to the absorption step (a).
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: September 29, 2009
    Assignee: Haldor Topsoe A/S
    Inventors: Sven Ivar Hommeltoft, Morten Thellefsen
  • Process for the recovery of sulfuric acid
    Publication number: 20070286794
    Abstract: Process for the recovery of sulfuric acid comprising: (a) contacting a stream containing sulfuric acid vapor and/or sulfur trioxide in an absorption stage with a ionic liquid absorbent, (b) withdrawing a gas substantially free of sulfuric acid vapor and/or sulfur trioxide from said absorption stage, (c) withdrawing a stream comprising the ionic liquid absorbent from said absorption stage, in which said ionic liquid absorbent contains sulfuric acid, (d) recovering sulfuric acid from said ionic liquid absorbent by passing the stream of step (c) through a separation stage, (e) withdrawing from the separation stage (d) a stream rich in sulfuric acid, (f) withdrawing from the separating step (d) a ionic liquid absorbent stream in which said ionic liquid absorbent contains sulfuric acid and returning said stream to the absorption step (a).
    Type: Application
    Filed: June 4, 2007
    Publication date: December 13, 2007
    Inventors: Sven Ivar Hommeltoft, Morten Thellefsen