Patents by Inventor David CHAZALLET

David CHAZALLET 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 fractionating a stream of cracked gas, using an intermediate recirculation current, and related plant
    Patent number: 10458701
    Abstract: This method comprises: forming an expanded intermediate recirculation stream (170) from a liquid (112, 128) obtained during an upstream cooling and/or intermediate cooling step, upstream from the downstream cooling step; circulating the intermediate recirculation stream (170) at least in an upstream heat exchanger (42) to cool an upstream stream of cracked gas (102); reintroducing the reheated intermediate recirculation stream (170) in a raw cracked gas (20) upstream from at least one compressor (36, 38) of a cooling and compression stage (24). The upstream, intermediate and downstream cooling steps is carried out without a heat exchanger respectively of an upstream stream of cracked gas (102), an intermediate stream of cracked gas (114) and a downstream stream of cracked gas (140) with an external refrigeration cycle.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: October 29, 2019
    Assignee: TECHNIP FRANCE
    Inventors: Bruno Destour, Yvon Simon, Aurélia Dadou, David Chazallet
  • METHOD FOR FRACTIONATING A STREAM OF CRACKED GAS, USING AN INTERMEDIATE RECIRCULATION CURRENT, AND RELATED PLANT
    Publication number: 20160258676
    Abstract: This method comprises: forming an expanded intermediate recirculation stream (170) from a liquid (112, 128) obtained during an upstream cooling and/or intermediate cooling step, upstream from the downstream cooling step; circulating the intermediate recirculation stream (170) at least in an upstream heat exchanger (42) to cool an upstream stream of cracked gas (102); reintroducing the reheated intermediate recirculation stream (170) in a raw cracked gas (20) upstream from at least one compressor (36, 38) of a cooling and compression stage (24). The upstream, intermediate and downstream cooling steps is carried out without a heat exchanger respectively of an upstream stream of cracked gas (102), an intermediate stream of cracked gas (114) and a downstream stream of cracked gas (140) with an external refrigeration cycle.
    Type: Application
    Filed: October 23, 2014
    Publication date: September 8, 2016
    Applicant: TECHNIP FRANCE
    Inventors: Bruno DESTOUR, Yvon SIMON, Aurélia DADOU, David CHAZALLET