Patents by Inventor Jahja Evelyne

Jahja Evelyne 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 and apparatus for separation of hydrocarbons
    Patent number: 7357003
    Abstract: There are provided a process for separation of hydrocarbons including the steps of: (a) a feed gas is cooled and partly condensed, and separated into a gas and a liquid; (b) the liquid obtained in step (a) is supplied to a distillation column; (c) the gas obtained in step (a) is expanded by an expander and partly condensed, and separated into a gas and a liquid; (d) the liquid obtained in step (c) is supplied to the distillation column; (e) the gas obtained in step (c) is divided into a first portion and a second portion; (f) the first portion is supplied to the distillation column; (g) the second portion is condensed by being compressed and cooled, and then depressurized and supplied as a reflux to the distillation column; and (h) a residue gas is obtained from the top part of the distillation column and a heavier fraction is obtained from the bottom part of the distillation column; and an apparatus therefor. The process and apparatus enable efficient separation of hydrocarbons.
    Type: Grant
    Filed: June 28, 2004
    Date of Patent: April 15, 2008
    Assignee: Toyo Engineering Corporation
    Inventors: Susumu Ohara, Shoichi Yamaguchi, Yasuyuki Yamamori, Jahja Evelyne
  • Process and apparatus for separation of hydrocarbons
    Publication number: 20050155382
    Abstract: There are provided a process for separation of hydrocarbons including the steps of: (a) a feed gas is cooled and partly condensed, and separated into a gas and a liquid; (b) the liquid obtained in step (a) is supplied to a distillation column; (c) the gas obtained in step (a) is expanded by an expander and partly condensed, and separated into a gas and a liquid; (d) the liquid obtained in step (c) is supplied to the distillation column; (e) the gas obtained in step (c) is divided into a first portion and a second portion; (f) the first portion is supplied to the distillation column; (g) the second portion is condensed by being compressed and cooled, and then depressurized and supplied as a reflux to the distillation column; and (h) a residue gas is obtained from the top part of the distillation column and a heavier fraction is obtained from the bottom part of the distillation column; and an apparatus therefor. The process and apparatus enable efficient separation of hydrocarbons.
    Type: Application
    Filed: June 28, 2004
    Publication date: July 21, 2005
    Applicant: Toyo Engineering Corporation
    Inventors: Susumu Ohara, Shoichi Yamaguchi, Yasuyuki Yamamori, Jahja Evelyne