A premixed dual fuel burner includes a burner head, a burner interior elongated along a main axis and having an upstream side enclosed by a swirler and a downstream side enclosed by a premixing section, and an injection component. The burner head and sides are serially arranged. The swirler includes an inlet section for introducing air and a main gas fuel. The injection component has a tapering structure positioned along the main axis which extends from the burner head into the burner interior. The injection component tapers from a burner head side and an injection side along the main axis. At the injection side a liquid fuel outlet introduces a main liquid fuel into the burner interior. The injection side is disposed in the burner interior. At least one of the at least one liquid fuel outlet is at a side of the injection side of the injection component.

Systems and methods are disclosed that may include providing a dual fuel burner in a superheater truck to burn wellhead gas produced from a wellhead in a first fuel burner and burn at least one of methane, ethane, propane, butane, gasoline, diesel, liquified natural gas (LNG), natural gas liquids (NGLs), and wellhead gas in a second fuel burner to heat water and/or other chemicals used in hydrocarbon production and/or well completion processes, including, but not limited to hydraulic fracturing (fracking). The first fuel burner may be integrated with the second fuel burner such that fuel rail fingers of the first fuel burner are interstitially spaced with fuel rail fingers of the second fuel burner. The first fuel burner and the second fuel burner may be operated independently from each other. The first fuel burner and the second fuel burner may alternatively be operated simultaneously with each other.

Systems and methods are disclosed that may include providing a dual fuel burner in a superheater truck to burn wellhead gas produced from a wellhead in a first fuel burner and burn at least one of methane, ethane, propane, butane, gasoline, diesel, liquified natural gas (LNG), natural gas liquids (NGLs), and wellhead gas in a second fuel burner to heat water and/or other chemicals used in hydrocarbon production and/or well completion processes, including, but not limited to hydraulic fracturing (fracking). The first fuel burner may be integrated with the second fuel burner such that fuel rail fingers of the first fuel burner are interstitially spaced with fuel rail fingers of the second fuel burner. The first fuel burner and the second fuel burner may be operated independently from each other. The first fuel burner and the second fuel burner may alternatively be operated simultaneously with each other.

A nozzle cap (82) is disposed at a downstream end of the nozzle. The nozzle cap includes a bore arranged to accommodate a downstream portion of a fluid-injecting lance that extends along a longitudinal axis (18) of the nozzle. The downstream portion of the fluid-injecting lance includes a centrally-located atomizer (80) to form a first atomized ejection cone. An array of atomizers (84) is disposed in the nozzle cap. The array of atomizers is circumferentially disposed about the longitudinal axis of the lance. The array of atomizers may be positioned radially outwardly relative to the centrally-located atomizer to form an array of respective second atomized ejection cones.

A nozzle cap (82) is disposed at a downstream end of the nozzle. The nozzle cap includes a bore arranged to accommodate a downstream portion of a fluid-injecting lance that extends along a longitudinal axis (18) of the nozzle. The downstream portion of the fluid-injecting lance includes a centrally-located atomizer (80) to form a first atomized ejection cone. An array of atomizers (84) is disposed in the nozzle cap. The array of atomizers is circumferentially disposed about the longitudinal axis of the lance. The array of atomizers may be positioned radially outwardly relative to the centrally-located atomizer to form an array of respective second atomized ejection cones.

Systems and methods are disclosed that may include producing wellhead gas from a wellbore, removing hydrocarbons and/or other particulates from the wellhead gas produced from the wellbore to maximize and/or provide a consistent BTU level to the wellhead gas, and burning the wellhead gas in a wellhead gas burner to heat water and/or other chemicals used in hydrocarbon production and/or well completion processes, including, but not limited to hydraulic fracturing (fracking). The wellhead gas burner may also be configured as a primary heat source and integrated with a traditional gas burner system configured as a supplemental heat source. The wellhead gas burner and the traditional gas burner may also be operated simultaneously. The wellhead gas burner may also be mounted to a mobile superheater truck.

Systems and methods are disclosed that may include producing wellhead gas from a wellbore, removing hydrocarbons and/or other particulates from the wellhead gas produced from the wellbore to maximize and/or provide a consistent BTU level to the wellhead gas, and burning the wellhead gas in a wellhead gas burner to heat water and/or other chemicals used in hydrocarbon production and/or well completion processes, including, but not limited to hydraulic fracturing (fracking). The wellhead gas burner may also be configured as a primary heat source and integrated with a traditional gas burner system configured as a supplemental heat source. The wellhead gas burner and the traditional gas burner may also be operated simultaneously. The wellhead gas burner may also be mounted to a mobile superheater truck.

Disclosed is a dual-fuel heater having one or more thermocouples that operate a control valve that, in turn, controls whether fuel is distributed from a regulator to a burner based on the signal generated by the thermocouple(s). Further disclosed is a primary fuel selector valve that selects the fuel being used based on the operation of a user. The primary fuel selector valve provides fuel to the control valve upstream from the thermocouples, allowing for upstream control mechanisms such as a slave valve, to control the flow of fuel to the control valve.

Disclosed is a dual-fuel heater having one or more thermocouples that operate a control valve that, in turn, controls whether fuel is distributed from a regulator to a burner based on the signal generated by the thermocouple(s). Further disclosed is a primary fuel selector valve that selects the fuel being used based on the operation of a user. The primary fuel selector valve provides fuel to the control valve upstream from the thermocouples, allowing for upstream control mechanisms such as a slave valve, to control the flow of fuel to the control valve.

A combustor includes: a plurality of burners supplied with ammonia and a second fuel; and a controller. The controller is configured to execute: supplying the second fuel to at least a first burner among the plurality of burners in a first load range including zero load; and, in a second load range where an equivalent ratio of the first burner reaches a predetermined first value, increasing a flow rate of ammonia and decreasing a flow rate of the second fuel for the first burner so that the total equivalent ratio of ammonia and the second fuel of the first burner is maintained at the first value, and supplying excess second fuel that is not supplied to the first burner to a second burner.