Patents by Inventor Damiano Marzari Chiesa

Damiano Marzari Chiesa 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 purification of a synthesis gas containing hydrogen and impurities
    Patent number: 10816264
    Abstract: A process for purification of a current of hydrogen synthesis gas (100), particularly in the front-end of an ammonia plant, wherein said gas contains hydrogen and minor amounts of carbon monoxide, carbon dioxide, water and impurities, said process including steps of methanation (13) of said current (100), converting residual amounts of carbon monoxide and carbon dioxide to methane and water, dehydration (14) of the gas to remove water, and then a cryogenic purification (15) such as liquid nitrogen wash, to remove methane and Argon; a corresponding plant and method for revamping an ammonia plant are also disclosed.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: October 27, 2020
    Assignee: Casale SA
    Inventors: Ermanno Filippi, Raffaele Ostuni, Damiano Marzari Chiesa