A novel inline pilot assembly and method of flame detection for use with combustion applications for oil or gas processing is provided wherein the pilot assembly includes a pilot novel assembly with a unique placement of fuel and induction holes to improve flame stability, promote flame anchoring near the diffuser, and discourage the pilot flame front from migrating forward away from the diffuser.

A novel inline pilot assembly and method of flame detection for use with combustion applications for oil or gas processing is provided wherein the pilot assembly includes a pilot novel assembly with a unique placement of fuel and induction holes to improve flame stability, promote flame anchoring near the diffuser, and discourage the pilot flame front from migrating forward away from the diffuser.

A method for detecting a flame is provided. The method includes the step of providing alternating current to a flame rectification probe to produce a first voltage as an input for a sense circuit, wherein the flame rectification probe is placed in proximity to the flame. The method further includes the step of conditioning the first voltage using the sense circuit to produce a second voltage. Additionally, the method includes the steps of outputting the second voltage to a microcontroller, and determining with the microcontroller whether the flame is present based on a magnitude of the second voltage.

The invention relates to a burner as well as to a waste gas treatment device for generating a flame for the combustion of process gas, especially of contaminants, in a combustion chamber, in each case having feed lines for a fuel gas and for an oxidizing agent so that they flow into a pre-mixing chamber, and having an ignition device for igniting the gas mixture contained in the pre-mixing chamber. According to the invention, a sensor for detecting and/or monitoring the flame is provided on the burner, especially at one end of the burner situated opposite from the pre-mixing chamber.

The invention relates to a burner as well as to a waste gas treatment device for generating a flame for the combustion of process gas, especially of contaminants, in a combustion chamber, in each case having feed lines for a fuel gas and for an oxidizing agent so that they flow into a pre-mixing chamber, and having an ignition device for igniting the gas mixture contained in the pre-mixing chamber. According to the invention, a sensor for detecting and/or monitoring the flame is provided on the burner, especially at one end of the burner situated opposite from the pre-mixing chamber.

Sparkless igniters comprising a hot surface igniter assembly and a nozzle that produce a flame plume with diameter substantially similar to the diameter of the fire tube, and flame length less than the length of each leg of the U-shaped fire tube in heater treaters are applicable to both vertical and horizontal heater treaters and improve the durability of fire tubes while reducing igniter fuel consumption by at least 30%.

A combustion fluid flow barrier includes an aperture to control combustion fluid flow. The combustion fluid is charged by a charge generator. The combustion fluid flow barrier includes at least one flow control electrode operatively coupled to the aperture and configured to selectively allow, attract, or resist passage of the charged combustion fluid through the aperture, depending on voltage applied to the flow control electrode.

A method for controlling operation of a fuel-fired heating appliance having a burner, a fuel flow control for controlling a fuel flow to the burner, and a combustion air blower for supplying combustion air to the burner, includes iteratively (1) determining the quality of combustion by sensing a flame at the burner and outputting a time-varying flame current signal that includes an ionization signal from the flame; sampling the flame current signal to obtain a time record of the flame current signal; using a Fourier transformation, transforming the time record into a frequency spectrum of frequency components that include frequency components of the ionization signal, the frequency spectrum having a spectrum shaped defined by various frequency components of the flame current signal; and determining whether the frequency spectrum indicates flame stability or instability. Upon determination of flame instability, adjusting at least one of the fuel flow control to decrease the fuel flow to the burner and the combustion air blower to increase the flow of combustion air to the burner, and shutting down the burner if flame stability is not determined within a predetermined interval.

A flame rod (1) including: a rod portion (11) made of a metal material containing aluminum; and a protective cover layer (21) containing a cover material having high conductivity and high heat resistance, wherein the protective cover layer (21) covers a surface of an insertion portion (11A) of the flame rod (11), and the protective cover layer (11) has a thickness of 0.002 mm or more and less than 0.1 mm.

A flame rod (1) including: a rod portion (11) made of a metal material containing aluminum; and a protective cover layer (21) containing a cover material having high conductivity and high heat resistance, wherein the protective cover layer (21) covers a surface of an insertion portion (11A) of the flame rod (11), and the protective cover layer (11) has a thickness of 0.002 mm or more and less than 0.1 mm.