Subir M Roychoudhury

US Patent:

7141092, Nov 28, 2006

Filed:

May 10, 2005

Appl. No.:

11/126012

Inventors:

Subir Roychoudhury - Madison CT, US
Jay Perry - Madison AL, US
Dennis Walsh - Richboro PA, US

International Classification:

B01D 53/04

US Classification:

95 90, 95148

Abstract:

A method for regenerable adsorption includes providing a substrate that defines at least one layer of ultra short channel length mesh capable of conducting an electrical current therethrough, coating at least a portion of the substrate with a desired sorbent for trace contaminant control or COsorption, resistively heating the substrate, and passing a flowstream through the substrate and in contact with the sorbent.

US Patent:

7504047, Mar 17, 2009

Filed:

Apr 26, 2004

Appl. No.:

10/832055

Inventors:

Marco J. Castaldi - Yonkers NY, US
Maxim Lyubovsky - North Haven CT, US
Subir Roychoudhury - Madison CT, US

Assignee:

Precision Combustion, Inc. - North Haven CT

International Classification:

C01B 3/26

US Classification:

252373

Abstract:

The invention disclosed is a method for improving the selectivity of a desired chemical reaction over an undesired chemical reaction utilizing a reactor having at least one channel having a catalyst positioned thereon and a presenting a reactant flow stream at a known flow rate and inlet temperature over the catalyst at a velocity such that a boundary layer formed thereby relative to said catalytic surface defines a thickness that is sufficiently less than the thickness of a fully developed boundary layer over said catalytic surface whereby the desired chemical reaction occurs preferentially over the undesired chemical reaction.

US Patent:

7810317, Oct 12, 2010

Filed:

Mar 27, 2003

Appl. No.:

10/401226

Inventors:

Alessandro Gomez - Orange CT, US
Subir Roychoudhury - Madison CT, US

Assignee:

Precision Combustion, Inc. - North Haven CT

International Classification:

F01N 3/00

US Classification:

60295, 60274, 60286, 60303, 239 3, 239690, 431 2

Abstract:

A catalytic burner wherein a liquid fuel is evaporated prior to catalytic combustion by employing an electrosprayer. The catalytic burner can be made into an electrical generator by the use of a thermal to electrical energy conversion (TEEC) module.

US Patent:

7913484, Mar 29, 2011

Filed:

May 14, 2007

Appl. No.:

11/803464

Inventors:

Subir Roychoudhury - Madison CT, US
David L. Spence - Beacon Falls CT, US
Bruce Crowder - New Haven CT, US
Jonathan Berry - Simsonville SC, US
Richard Mastanduno - Milford CT, US

Assignee:

Precision Combustion, Inc. - North Haven CT

International Classification:

F02C 5/00

US Classification:

60 396, 60517

Abstract:

The invention provides a method for transferring heat by conduction to the internal heat acceptor of an external combustion engine. Fuel and air are introduced and mixed to form an air/fuel mixture. The air/fuel mixture is directed into a catalytic reactor that is positioned substantially adjacent to the heater head. Heat is transferred via conduction from the catalytic reactor to the heater head and the catalytic reaction products are exhausted.

US Patent:

7964023, Jun 21, 2011

Filed:

Oct 30, 2008

Appl. No.:

12/290609

Inventors:

Tianli Zhu - Cheshire CT, US
Christian Junaedi - Cheshire CT, US
Subir Roychoudhury - Madison CT, US

Assignee:

Precision Combustion, Inc. - North Haven CT

International Classification:

B01D 53/04

US Classification:

95135, 95136, 423230

Abstract:

A substrate or method for the sorption of sulfur compounds with a high capacity includes providing a substrate that defines at least one layer of ultra-short-channel-length mesh, coating at least a portion of the substrate with a desired sorbent for sulfur sorption, and passing a flowstream through the substrate and in contact with the sorbent during sorption.

US Patent:

7976594, Jul 12, 2011

Filed:

Oct 16, 2007

Appl. No.:

11/974988

Inventors:

Subir Roychoudhury - Madison CT, US
Maxim Lyubovsky - Alexandria VA, US
Jonathan Berry - Simpsonville SC, US

Assignee:

Precision Combustion, Inc. - North Haven CT

International Classification:

C10K 3/02

US Classification:

48197R, 48219

Abstract:

A method and a system for the vaporization of a liquid fuel is provided and includes providing a supply of a liquid fuel and an oxidant, atomizing the liquid fuel and mixing it with the oxidant, vaporizing the fuel in thermal radiation, catalytically reacting the fuel oxidant mixture, and providing an ignition source for initiating the catalytic reaction. A hydrocarbon fuel can be mixed with oxygen, as a constituent of air, preferably forming a fuel rich fuel air mixture that passes through a catalytic reactor having an ultra-short channel length metal monolith substrate. The fuel air mixture is vaporized and partially oxidized.

US Patent:

8337757, Dec 25, 2012

Filed:

Feb 9, 2009

Appl. No.:

12/322970

Inventors:

Subir Roychoudhury - Madison CT, US
Joel M. Desjardins - Vernon CT, US
David Spence - Beacon Falls CT, US
Richard Mastanduno - Milford CT, US
Dennis E. Walsh - Richboro PA, US
William C. Pfefferle - Madison CT, US

Assignee:

Precision Combustion, Inc. - North Haven CT

International Classification:

G05B 13/00

US Classification:

422111, 422105, 422177, 422180, 422 78, 422182, 422183, 422204, 422643, 422223, 700266, 700274, 436159, 436160, 436136, 436143

Abstract:

A method is provided for controlling the operating temperature of a catalytic reactor using a closed-loop system that provides for varying the reactor input and other operating parameters in order to maintain the operating temperature of the reactor at or near the initial setpoint temperature for operation of the reactor. In one example, maximum and minimum operating temperatures with a catalytic partial oxidation reactor are controlled, as well as maintaining control over the corresponding minimum required ratio of oxygen atoms to carbon atoms, such that the operating temperature within the reactor is maintained below the material limits but above threshold temperatures for coking.

US Patent:

8387380, Mar 5, 2013

Filed:

Oct 8, 2009

Appl. No.:

12/587593

Inventors:

Subir Roychoudhury - Madison CT, US
David Spence - Beacon Falls CT, US
Bruce B. Crowder - North Haven CT, US
Richard T. Mastanduno - Milford CT, US
Jonathan Berry - Simsonville SC, US

Assignee:

Precision Combustion, Inc. - North Haven CT

International Classification:

F01B 29/10

US Classification:

60524, 60517

Abstract:

The invention provides an apparatus and a method for transferring heat by conduction to the internal heat acceptor of an external combustion engine. Fuel and air are introduced into a combustion chamber and mixed to form an air/fuel mixture. The air/fuel mixture is directed into a catalytic reactor that is positioned in direct contact (non-spaced-apart relation) with the heater head. Heat is transferred via conduction from the catalytic reactor to the heater head; and the catalytic reaction products are exhausted with heat recuperation.