Patents by Inventor Wiebe Kijlstra

Wiebe Kijlstra 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 the removal of s02, hcn and h2s and optionally cos, cs2 and nh3 from a gas stream
    Publication number: 20060272502
    Abstract: The invention relates to a process for the removal of SO2, HCN and H2S and optionally one or more compounds from the group of COS, CS2 and NH3 from a first gas stream, which process comprises the steps of: (a) removing SO2 from the first gas stream by contacting the first gas stream in a hydrogenation zone with a hydrogenation catalyst in the presence of hydrogen to obtain a second gas stream; (b) removing HCN and optionally COS and/or CS2 from the second gas stream obtained in step (a) by contacting the second gas stream in a hydrolysis zone with a hydrolysis catalyst in the presence of water to obtain a third gas stream; (c) removing NH3 from the third gas stream by contacting the third gas stream in a NH3-removal zone with an aqueous acidic washing liquid to obtain an ammonium-comprising aqueous stream and a fourth gas stream; (d) removing H2S from the fourth gas stream by contacting the fourth gas stream in a H2S-removal zone with an aqueous alkaline washing liquid to obtain a H2S-depleted gas stream and
    Type: Application
    Filed: May 28, 2004
    Publication date: December 7, 2006
    Applicant: SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B.V.
    Inventors: Petru, Van Grinsven, Wiebe Kijlstra, Inge Roos, Cornelis Smit
  • Process for the removal of h2s and mercaptans from a gas stream
    Publication number: 20060188424
    Abstract: The invention relates to a process for the removal of, H2S.
    Type: Application
    Filed: April 13, 2004
    Publication date: August 24, 2006
    Inventor: Wiebe Kijlstra