Patents by Inventor Petrus Franciscus Antonius Van Grinsven

Petrus Franciscus Antonius Van Grinsven 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 SO, HCN and HS and Optionally COS, CSand NHfrom a gas stream
    Patent number: 7655205
    Abstract: Disclosed is a process for the removal of sulfur from a gas stream containing sulfur dioxide, hydrogen cyanide and hydrogen sulfide. The process includes a hydrogenation step, a hydrolysis step, an ammonia removal step and a hydrogen sulfide removal step. An aqueous alkaline washing liquid is used in the hydrogen sulfide removal step and with the spent sulfide containing washing liquid being regenerated using an oxidation bioreactor that utilizes sulfide oxidizing bacteria such as autotropic aerobic cultures of Thiobacillus and Thiomicrospira.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: February 2, 2010
    Assignee: Shell Oil Company
    Inventors: Petrus Franciscus Antonius Van Grinsven, Wiebe Sjoerd Kijlstra, Inge Roos, Cornelis Jacobus Smit
  • Process for the purification of an alkanolamine
    Patent number: 6152994
    Abstract: A process for the purification of an aqueous alkanolamine which process involves subjecting the alkanolamine to a distillation process carried out in one or more film-type evaporators and involves at least two steps, wherein in the first step water is removed from the aqueous alkanolamine and in the second step the de-watered alkanolamine is further purified.
    Type: Grant
    Filed: October 26, 1998
    Date of Patent: November 28, 2000
    Assignee: Shell Oil Company
    Inventors: Petrus Franciscus Antonius Van Grinsven, Gijsbert Jan Van Heeringen