Patents by Inventor Keith A. Craigie

Keith A. Craigie 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 of purifying hydrogen supplied from a storage cavern
    Patent number: 11571652
    Abstract: The present invention is directed to a method and system of purifying hydrogen supplied from a storage cavern, particularly to removing methane and other hydrocarbons from the hydrogen withdrawn from the cavern by using selective adsorption. The adsorbed impurities can be removed from the adsorbent by increasing the temperature, reducing the pressure, or a combination of both.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: February 7, 2023
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Minish Mahendra Shah, Joseph M. Schwartz, Marian Simo, Paul R. Munsterman, Werner Leitmayr, Keith A. Craigie, Ana Arevalo-Hidalgo, Olivier Dube
  • METHOD OF PURIFYING HYDROGEN SUPPLIED FROM A STORAGE CAVERN
    Publication number: 20220401872
    Abstract: The present invention is directed to a method and system of purifying hydrogen supplied from a storage cavern, particularly to removing methane and other hydrocarbons from the hydrogen withdrawn from the cavern by using selective adsorption. The adsorbed impurities can be removed from the adsorbent by increasing the temperature, reducing the pressure, or a combination of both.
    Type: Application
    Filed: June 22, 2021
    Publication date: December 22, 2022
    Inventors: Minish Mahendra Shah, Joseph M. Schwartz, Marian Simo, Paul R. Munsterman, Werner Leitmayr, Keith A. Craigie, Ana Arevalo-Hidalgo, Olivier Dube
  • Method and system for producing a synthesis gas in an oxygen transport membrane based reforming system with recycling of the produced synthesis gas
    Patent number: 9365422
    Abstract: A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system that utilizes a combined feed stream having a steam to carbon ratio between about 1.6 and 3.0 and a temperature between about 500° C. and 750° C. The combined feed stream is comprised a pre-reformed hydrocarbon feed, superheated steam, and a reaction product stream created by the reaction of a hydrogen containing stream reacted with the permeated oxygen at the permeate side of the oxygen transport membrane elements and wherein the hydrogen containing stream is a recycled portion of the synthesis gas.
    Type: Grant
    Filed: December 6, 2013
    Date of Patent: June 14, 2016
    Assignee: PRAXAIR TECHNOLOGY, INC.
    Inventors: Shrikar Chakravarti, Brian R. Kromer, Keith A. Craigie, Sean M. Kelly, Juan Li
  • METHOD AND SYSTEM FOR PRODUCING A SYNTHESIS GAS IN AN OXYGEN TRANSPORT MEMBRANE BASED REFORMING SYSTEM WITH RECYCLING OF THE PRODUCED SYNTHESIS GAS
    Publication number: 20140319427
    Abstract: A method and system for producing a synthesis gas in an oxygen transport membrane based reforming system that utilizes a combined feed stream having a steam to carbon ratio between about 1.6 and 3.0 and a temperature between about 500° C. and 750° C. The combined feed stream is comprised a pre-reformed hydrocarbon feed, superheated steam, and a reaction product stream created by the reaction of a hydrogen containing stream reacted with the permeated oxygen at the permeate side of the oxygen transport membrane elements and wherein the hydrogen containing stream is a recycled portion of the synthesis gas.
    Type: Application
    Filed: December 6, 2013
    Publication date: October 30, 2014
    Inventors: Shrikar Chakravarti, Brian R. Kromer, Keith A. Craigie, Sean M. Kelly, Juan Li