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CLIR ClearSign Technologies

GRANT
Utility
Fuel combustion system with a perforated reaction holder
26 Oct 21
A combustion system such as a furnace or boiler includes a perforated reaction holder configured to hold a combustion reaction that produces very low oxides of nitrogen (NOx).
Douglas W. Karkow, Robert E. Breidenthal, Joseph Colannino, Christopher A. Wiklof
Filed: 13 May 19
APP
Utility
Burner Including an Electrical Permittivity or Electrical Capacitance Flame Sensor
19 Aug 21
A burner includes a flame sensor configured to detect at least one of permittivity, capacitance, or resistance across a flame region.
DONALD KENDRICK, ROBERT GEIGER, JACKSON MATTHEW PLEIS, CHRISTOPHER A. WIKLOF
Filed: 28 Dec 20
APP
Utility
Variable Composition Gas Mixture Sensor
19 Aug 21
A system for measuring a fuel-oxidant equivalence ratio includes at least one wall defining a gas volume including fuel and air.
ROBERT GEIGER, DONALD KENDRICK, JACKSON MATTHEW PLEIS, CHRISTOPHER A. WIKLOF
Filed: 28 Dec 20
APP
Utility
Low Emission Modular Flare Stack
5 Aug 21
A low emissions modular flare stack includes a plurality of flare stack burner modules, each including a main fuel source configured to selectively deliver a main fuel stream for dilution by a flow of combustion air, a main igniter configured to cause ignition of the main fuel stream emitted from the main fuel source, a distal flame holder configured to hold a combustion reaction supported by the main fuel stream when the distal flame holder is at or above a predetermined temperature, and a pre-heating apparatus configured to pre-heat the distal flame holder to the predetermined temperature.
COLIN JAMES DELLER, MATT HOSIE, DOUGLAS W. KARKOW, DONALD KENDRICK, CHRISTOPHER A. WIKLOF
Filed: 5 Feb 20
GRANT
Utility
Electrodynamic control in a burner system
27 Jul 21
A burner system and a retrofit flame control system for an existing burner system are disclosed.
Christopher A. Wiklof
Filed: 8 Mar 19
GRANT
Utility
Plasma pilot
13 Jul 21
A combustion system includes a perforated flame holder, a fuel nozzle configured to output fuel toward the perforated flame holder, and a plasma ignition device configured to output a plasma during a preheating state of the combustion system and to cease outputting the plasma to transition from the preheating state to the standard operating state.
Sunny Karnani, James K. Dansie, Jackson M. Pleis
Filed: 6 May 19
GRANT
Utility
Porous flame holder for low NOx combustion
29 Jun 21
A burner includes a porous flame holder configured to support a combustion reaction to achieve a very low output of oxides of nitrogen (NOx).
Douglas W. Karkow, Joseph Colannino, Robert E. Breidenthal, Christopher A. Wiklof
Filed: 23 Sep 14
APP
Utility
CorrectedBurner System Including a Distal Flame Holder and a Non-reactive Fluid Source
24 Jun 21
A burner includes a distal flame holder, first and second fuel nozzles, a fuel and oxidant source, and a mixing tube disposed upstream from the distal flame holder.
Colin James Deller, Donald Kendrick, Venkatesh Iyer, Douglas W. Karkow
Filed: 30 Jan 20
APP
Utility
CorrectedControl System and Method for a Burner with a Distal Flame Holder
3 Jun 21
A combustion system includes a distal flame holder, a pilot fuel distributor, a main fuel distributor, an oxidant source, an array of sensors, and a controller.
DOUGLAS W. KARKOW, DONALD KENDRICK, JAMES K. DANSIE, CHRISTOPHER A. WIKLOF
Filed: 17 Jan 20
APP
Utility
Prefabricated Integrated Combustion Assemblies and Methods of Installing the Same into a Combustion System
6 May 21
Embodiments disclosed herein are directed to devices and methods for improving operation of a combustion system.
DONALD KENDRICK, WILLIAM A. SANTANA, CHRISTOPHER A. WIKLOF
Filed: 12 Oct 20
APP
Utility
Burner System Including a Plurality of Perforated Flame Holders
4 Mar 21
A combustion system includes a fuel and oxidant source, a first distal flame holder body, a second distal flame holder body, and a thermal load.
DOUGLAS W. KARKOW, JAMES K. DANSIE, VENKATESH IYER, DONALD KENDRICK, COLIN JAMES DELLER, CHRISTOPHER A. WIKLOF
Filed: 8 Sep 20
GRANT
Utility
Burner system including a non-planar perforated flame holder
2 Nov 20
A combustion system such as a furnace or boiler includes a non-planar perforated flame holder configured to hold a combustion reaction.
Joseph Colannino, Douglas W. Karkow, James K. Dansie, Christopher A. Wiklof
Filed: 19 Sep 18
APP
Utility
CorrectedUltra Low Emissions Firetube Boiler Burner
28 Oct 20
According to an embodiment, a fired heater includes a fuel and combustion air source configured to output fuel and combustion air into a combustion volume, the combustion volume including a combustion volume wall defining a lateral extent separate from an exterior volume.
DONALD KENDRICK, DOUGLAS W. KARKOW, VENKATESH IYER, JAMES K. DANSIE, JONATHAN BUCHER, AARON SALZBRUN
Filed: 17 Jun 19
GRANT
Utility
Method for electrically controlled combustion fluid flow
19 Oct 20
A combustion fluid flow barrier includes an aperture to control combustion fluid flow.
Douglas W. Karkow, Christopher A. Wiklof
Filed: 11 Dec 18
GRANT
Utility
Pre-mixed fuel burner with perforated flame holder
19 Oct 20
A combustion system such as a furnace or boiler includes a perforated reaction holder configured to hold a combustion reaction that produces very low oxides of nitrogen (NOx).
Douglas W. Karkow, Joseph Colannino, Robert E. Breidenthal, Christopher A. Wiklof
Filed: 5 Apr 16
GRANT
Utility
Prefabricated integrated combustion assemblies and methods of installing the same into a combustion system
12 Oct 20
Embodiments disclosed herein are directed to devices and methods for improving operation of a combustion system.
Douglas Wayne Karkow, Joseph Colannino, Christopher A. Wiklof
Filed: 15 Feb 16
GRANT
Utility
Burner including a perforated flame holder spaced away from a fuel nozzle
31 Aug 20
A perforated flame holder and burner including a perforated flame holder provides reduced oxides of nitrogen (NOx) during operation.
Douglas W. Karkow, Joseph Colannino, Igor A. Krichtafovitch, Robert E. Breidenthal, Christopher A. Wiklof
Filed: 26 Nov 17
GRANT
Utility
Low NOx burner
24 Aug 20
A low NOx burner is configured to support a combustion reaction at a selected fuel mixture by anchoring a flame at a conductive flame anchor responsive to current flow between charges carried by the flame and the conductive flame anchor.
Joseph Colannino
Filed: 19 Nov 17
APP
Utility
Horizontally Fired Burner System
12 Aug 20
A horizontally-fired burner system includes, in a combustion volume, a distal flame holder, the distal flame holder including a plurality of columns each formed from a respective plurality of refractory tiles, and a fuel and combustion air source configured to output a flammable fuel and air mixture toward the distal flame holder.
DONALD KENDRICK, STEVEN BRNCIC
Filed: 10 Feb 20
APP
Utility
Burner System Including a Distal Flame Holder and a Non-reactive Fluid Source
29 Jul 20
A burner includes a distal flame holder, first and second fuel nozzles, a fuel and oxidant source, and a mixing tube disposed upstream from the distal flame holder.
Colin James Deller, Donald Kendrick, Venkatesh Iyer, Douglas W. Karkow
Filed: 29 Jan 20
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