Patents by Inventor Arup Nandi

Arup Nandi 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).

  • System and method for solvent recovery in a batch fluidized bed process
    Patent number: 8973283
    Abstract: A system and method for solvent recovery in a batch fluidized bed process is provided. The disclosed embodiment of the fluidized bed system includes a fluidized bed vessel adapted to contain a batch of solvent-containing product; an influent or intake circuit adapted to supply an inert fluidizing gas to the fluidized bed vessel; an effluent circuit adapted to remove the solvent containing inert fluidizing gas from the fluidized bed vessel; a first recycle circuit coupling the effluent circuit to a solvent recovery means; a second recycle circuit directly coupling the effluent circuit to the intake circuit and a flow control valve operatively disposed to divide the effluent between the first recycle circuit and the second recycle circuit based on the operating regime of the fluidized bed process.
    Type: Grant
    Filed: February 2, 2010
    Date of Patent: March 10, 2015
    Assignee: Praxair Technology, Inc.
    Inventors: Arup Nandi, Alan Cheng, John Fredric Billingham
  • SYSTEM AND METHOD FOR SOLVENT RECOVERY IN A BATCH FLUIDIZED BED PROCESS
    Publication number: 20120030962
    Abstract: A system and method for solvent recovery in a batch fluidized bed process is provided. The disclosed embodiment of the fluidized bed system includes a fluidized bed vessel adapted to contain a batch of solvent-containing product; an influent or intake circuit adapted to supply an inert fluidizing gas to the fluidized bed vessel; an effluent circuit adapted to remove the solvent containing inert fluidizing gas from the fluidized bed vessel; a first recycle circuit coupling the effluent circuit to a solvent recovery means; a second recycle circuit directly coupling the effluent circuit to the intake circuit and a flow control valve operatively disposed to divide the effluent between the first recycle circuit and the second recycle circuit based on the operating regime of the fluidized bed process.
    Type: Application
    Filed: February 2, 2010
    Publication date: February 9, 2012
    Applicant: PRAXAIR TECHNOLOGY, INC.
    Inventors: Arup Nandi, Alan Cheng, John Fredric Billingham