Patents by Inventor Desmond Andrew BUNGKU

Desmond Andrew BUNGKU 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 processing fischer-tropsch off-gas
    Patent number: 8956441
    Abstract: A method for producing a gas comprising at least 80 vol % carbon monoxide from a Fischer-Tropsch off-gas comprises: (1) feeding Fischer-Tropsch off-gas through a column comprising an adsorbent bed at high pressure and discharging effluent; (2) reducing the pressure in the column and the bed slightly; (3) rinsing the column and the adsorbent bed with methane or a mixture of methane and carbon dioxide; (4) reducing the pressure of the column and adsorbent bed to a low pressure; (5) rinsing the column and adsorbent bed with a mixture of hydrogen and nitrogen; (6) pressurizing the column and adsorbent bed to a high pressure using a mixture of hydrogen and nitrogen. The product stream obtained in step (3) comprising at least 80 vol % carbon monoxide can be sent as feed to a Fischer-Tropsch reaction. In an embodiment, a gas comprising at least 80 vol % hydrogen is also produced.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: February 17, 2015
    Assignee: Shell Oil Company
    Inventors: Justus Theodorus Gerardus Te Braake, Maarten Bracht, Desmond Andrew Bungku, Wouter David Van De Graaf, Xander Linders, Sivakumar Sadasivan Vijayakumari
  • Method for processing Fischer-Tropsch off-gas
    Patent number: 8632697
    Abstract: A method for producing a gas comprising at least 80 vol % carbon monoxide from a Fischer-Tropsch off-gas comprising: (1) feeding Fischer-Tropsch off-gas through a column comprising an adsorbent bed at high pressure and discharging effluent; (2) reducing the pressure in the column and the bed slightly; (3) rinsing the column and the adsorbent bed with methane or carbon dioxide; (4) rinsing the column and the adsorbent bed with carbon dioxide; (5) reducing the pressure of the column and adsorbent bed to a low pressure; (6) rinsing the column and adsorbent bed with a mixture of hydrogen and nitrogen; (7) pressurizing the column and adsorbent bed to a high pressure using a mixture of hydrogen and nitrogen. The carbon monoxide rich product stream obtained in step (3) can be sent as feed to a Fischer-Tropsch reaction. In an embodiment, a gas comprising at least 80 vol % hydrogen is also produced.
    Type: Grant
    Filed: October 25, 2012
    Date of Patent: January 21, 2014
    Assignee: Shell Oil Company
    Inventors: Justus Theodorus Gerardus Te Braake, Maarten Bracht, Desmond Andrew Bungku, Wouter David Van De Graaf, Xander Linders, Sivakumar Sadasivan Vijayakumari
  • METHOD FOR PROCESSING FISCHER-TROPSCH OFF-GAS
    Publication number: 20130276630
    Abstract: A method for producing a gas comprising at least 80 vol % carbon monoxide from a Fischer-Tropsch off-gas comprises: (1) feeding Fischer-Tropsch off-gas through a column comprising an adsorbent bed at high pressure and discharging effluent; (2) reducing the pressure in the column and the bed slightly; (3) rinsing the column and the adsorbent bed with methane or a mixture of methane and carbon dioxide; (4) reducing the pressure of the column and adsorbent bed to a low pressure; (5) rinsing the column and adsorbent bed with a mixture of hydrogen and nitrogen; (6) pressurizing the column and adsorbent bed to a high pressure using a mixture of hydrogen and nitrogen. The product stream obtained in step (3) comprising at least 80 vol % carbon monoxide can be sent as feed to a Fischer-Tropsch reaction. In an embodiment, a gas comprising at least 80 vol % hydrogen is also produced.
    Type: Application
    Filed: October 25, 2012
    Publication date: October 24, 2013
    Inventors: Justus Theodorus Gerardus TE BRAAKE, Maarten BRACHT, Desmond Andrew BUNGKU, Wouter David VAN DE GRAAF, Xander Linders, Sivakumar SADASIVAN VIJAYAKUMARI