Patents by Inventor Martin Karlssson

Martin Karlssson 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).

  • Method for the cleaning of off-gas
    Patent number: 8048392
    Abstract: The present invention relates to a method for cleaning off-gas comprising the following steps: 1. Sulphur dioxide is separated from the off-gas by way of at least one first scrubber stage (c) by means of ammonia or ammonium compounds, 2. the off-gas is transferred into a second scrubber stage (d) and 3. in the second scrubber stage the sulphur dioxide not separated in the first scrubber stage (c), is oxidized to sulphuric acid and separated in at least one scrubber (d) and simultaneously, the ammonia released in the first scrubber stage (d) is separated by means of the formed sulphuric acid, whereby ammonium sulphate is formed, 4. the separated stream of the second scrubber stage (d) is transferred into the first scrubber stage (c).
    Type: Grant
    Filed: August 22, 2008
    Date of Patent: November 1, 2011
    Assignees: Karlsruher Institut für Technologie, Göotaverken Miljö AB
    Inventors: Hans Hunsinger, Martin Karlssson, Sven Andersson, Ulf Hägg
  • METHOD FOR THE CLEANING OF OFF-GAS
    Publication number: 20100296993
    Abstract: The present invention relates to a method for cleaning off-gas comprising the following steps: 1. sulphur dioxide is separated from the off-gas by way of at least one first scrubber stage (c) by means of ammonia or ammonium compounds, 2. the off-gas is transferred into a second scrubber stage (d) and 3. in the second scrubber stage the sulphur dioxide not separated in the first scrubber stage (c), is oxidised to sulphuric acid and separated in at least one scrubber (d) and simultaneously, the ammonia released in the first scrubber stage (d) is separated by means of the formed sulphuric acid, whereby ammonium sulphate is formed, 4. the separated stream of the second scrubber stage (d) is transferred into the first scrubber stage (c).
    Type: Application
    Filed: August 22, 2008
    Publication date: November 25, 2010
    Inventors: Hans Hunsinger, Martin Karlssson, Sven Andersson, Ulf Hägg