Christopher Paul Leger

US Patent:

6450108, Sep 17, 2002

Filed:

Feb 26, 2001

Appl. No.:

09/791614

Inventors:

John Erling Anderson - Somers NY
Glenn William Arnold - Poughkeepsie NY
Christopher Brian Leger - Houston TX

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

F23L 700

US Classification:

110348, 110214, 110262, 431 9, 431353

Abstract:

A system for combusting difficult to combust fluid such as waste fluid wherein fuel and gaseous oxidant combust in a hot combustion gas chamber to form a hot combustion gas mixture which is accelerated to a high speed and at a steady, i. e. non-pulsing, flow is then used to atomize and then combust the fluid.

US Patent:

6471937, Oct 29, 2002

Filed:

Sep 4, 1998

Appl. No.:

09/148779

Inventors:

John Erling Anderson - Somers NY
Matthew Lincoln Wagner - White Plains NY
Christopher Brian Leger - Houston TX

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

C01B 3118

US Classification:

423659, 4234182, 4234491, 423613, 48197 R

Abstract:

The invention comprises a reactor having a source of a first hot reactant gas, a mixing chamber in which said first hot reactant gas mixes with a second reactant gas to form a reactant gas mixture, but wherein substantially no reaction takes place and a reaction zone wherein said mixture undergoes vapor phase reaction. A process for using the reactor is also disclosed.

US Patent:

6565010, May 20, 2003

Filed:

Mar 24, 2000

Appl. No.:

09/534452

Inventors:

John Erling Anderson - Somers NY
Glenn William Arnold - Poughkeepsie NY
Christopher Brian Leger - Houston TX

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

A62C 502

US Classification:

239 8, 239 13, 239423, 239422, 239424, 239135

Abstract:

A method for atomizing a fluid wherein a gas is heated with the heating facilitating the acceleration of the gas to a high velocity. The accelerated gas contacts the fluid transferring shear, pressure and inertial forces and heat to the fluid effecting efficient atomization of the fluid.

US Patent:

55802370, Dec 3, 1996

Filed:

Mar 9, 1995

Appl. No.:

8/401376

Inventors:

Christopher B. Leger - White Plains NY

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

F23C 500

US Classification:

431 8

Abstract:

An oxidant lancing nozzle and lancing method wherein first and second oxidant streams are injected into a combustion zone under defined conditions enabling the lancing of oxygen to augment a main combustion reaction with improved flame stability and unchanged or even reduced NO. sub. x formation.

US Patent:

57524521, May 19, 1998

Filed:

Oct 25, 1996

Appl. No.:

8/738139

Inventors:

Christopher Brian Leger - White Plains NY

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

F23G 704

US Classification:

110346

Abstract:

An improved apparatus and method for efficiently processing material, e. g. incinerating waste material, particularly dewatered waste water sludge, in a multiple hearth furnace by injecting high velocity jets of oxygen into the heating or drying zone of the furnace to augment turbulent gas-phase mixing, to aid in the burnout of carbon monoxide and hydrocarbons in the gas phase to achieve lower emissions, to increase convection over the drying sludge to increase its drying rate, and to ignite the drying sludge to further increase its drying rate. The apparatus and method provides an increase in sludge throughput and a reduction in carbon monoxide, nitrogen oxides and hydrocarbon emissions.

US Patent:

57624860, Jun 9, 1998

Filed:

Feb 21, 1996

Appl. No.:

8/604533

Inventors:

Christopher Brian Leger - White Plains NY

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

F23C 500

US Classification:

431 8

Abstract:

A method for combusting low heating value liquid by forming a toroidal vortex between atomized liquid and medium velocity oxidant, and carrying out combustion within the toroidal vortex to serve as a dependable ignition source for the main combustion reaction.

US Patent:

55729380, Nov 12, 1996

Filed:

Feb 13, 1995

Appl. No.:

8/387542

Inventors:

Christopher B. Leger - White Plains NY

Assignee:

Praxair Technology, Inc. - Danbury CT

International Classification:

F23B 700
F23B 1400

US Classification:

110346

Abstract:

Oxygen is lanced into the main combustion reaction of a cement kiln to increase heat transfer to the clinker bed and to increase clinker production. Oxygen is separately lanced along the floor, i. e. the lowest wall of the kiln, to delay mixing with the flame to provide deep staging. The deeply staged oxygen flow is adjusted frequently to control emissions and stabilize the burning zone while the primary oxygen flow is maintained constant.