Patents by Inventor Renus Constantyn Kelfkens

Renus Constantyn Kelfkens 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).

  • Patent number: 9416077
    Abstract: An integrated plant is provided to improve carbon utilization of carbon molecules from gasified woody biomass to be converted into methanol. Detectors ensure a minimized sulfur content of less than 0.05% by dry weight of the woody biomass. A biomass gasifier reacts woody biomass in a rapid gasification reaction to produce a syngas composition having a ratio of hydrogen to carbon dioxide that is higher than needed for methanol synthesis. Parallel to the gasifier, a hydrocarbon reforming reactor provides a syngas composition having a ratio of hydrogen to carbon monoxide that is higher than needed for methanol synthesis. The combined syngas mixture from the biomass gasifier and the hydrocarbon reforming reactor comprises feed to a methanol synthesis plant, such that a majority of the carbon dioxide produced by the biomass gasification reaction and the hydrogen produced by the hydrocarbon reforming reactor are synthesized into methanol.
    Type: Grant
    Filed: September 13, 2013
    Date of Patent: August 16, 2016
    Assignee: Sundrop Fuels, Inc.
    Inventors: Renus Constantyn Kelfkens, Herbert Mark Kosstrin
  • Publication number: 20140080928
    Abstract: An integrated plant is provided to improve carbon utilization of carbon molecules from gasified woody biomass to be converted into methanol. Detectors ensure a minimized sulfur content of less than 0.05% by dry weight of the woody biomass. A biomass gasifier reacts woody biomass in a rapid gasification reaction to produce a syngas composition having a ratio of hydrogen to carbon dioxide that is higher than needed for methanol synthesis. Parallel to the gasifier, a hydrocarbon reforming reactor provides a syngas composition having a ratio of hydrogen to carbon monoxide that is higher than needed for methanol synthesis. The combined syngas mixture from the biomass gasifier and the hydrocarbon reforming reactor comprises feed to a methanol synthesis plant, such that a majority of the carbon dioxide produced by the biomass gasification reaction and the hydrogen produced by the hydrocarbon reforming reactor are synthesized into methanol.
    Type: Application
    Filed: September 13, 2013
    Publication date: March 20, 2014
    Applicant: Sundrop Fuels, Inc.
    Inventors: Renus Constantyn Kelfkens, Herbert Mark Kosstrin
  • Patent number: 5844006
    Abstract: A process for producing liquid and, optionally, gaseous products from gaseous reactants comprises feeding gaseous reactants into a slurry bed of solid particles suspended in a liquid; allowing the reactants to react as they pass upwardly through the slurry bed, thereby to form liquid and, optionally, gaseous products; and separating liquid product from the solid particles by passing, in a filtration zone within the slurry bed, liquid product through a filtration medium in a first direction, so that a cake of the solid particles forms on the filtration medium. The passage of liquid product through the filtering medium is interrupted. The filtering medium is then backflushed by passing a flushing fluid through the filtering medium in a second direction, opposite to the first direction, for at least portions of the periods that the liquid product passage is interrupted, thereby to dislodge the cake from the filtering medium.
    Type: Grant
    Filed: September 27, 1996
    Date of Patent: December 1, 1998
    Assignee: Sasol Chemical Industries (Proprietary) Limited
    Inventors: Berend Jager, Andre Peter Steynberg, Juan Ricardo Inga, Renus Constantyn Kelfkens, Michael Anthony Smith, Francois Erenst Johannes Malherbe