A gas burner for burning a gas with a low calorific value. The gas burner may be for burning a synthesis gas issuing from the gasification of biomass.

A heating assembly can include a locking valve with a reset switch which can include certain pressure sensitive features. These features can be configured to change from a first position to a second position based on a pressure of a fuel. The valve can be used with either a first fuel or a second fuel different from the first. The valve can become locked or be held in either the first or the second position. For example, a set fuel pressure can cause the valve to move to a closed position and the valve can become locked or held in that position. If the pressure decreases, the valve can remain in the locked position. Actuation of the reset switch can allow the valve to move to a new position, such as an open position. The locking valve can be linked to additional valves to lock them in position as well.

An adjustable injector system for adjusting a radial distribution of a mixed fuel includes an adjustable injector configured to receive first and second non-carbon fuels and configured to adjust the radial distribution of the mixed fuel with a movable part, wherein the mixed fuel is obtained from mixing the first non-carbon fuel with the second non-carbon fuel; a sensor configured to determine an instability of a flame generated by the mixed fuel; and a controller electrically connected to the adjustable injector and the sensor, and configured to change a configuration of the adjustable injector, based on an input signal from the sensor, to control the radial distribution of the mixed fuel.

A method is provided for operating a gas turbine installation which has at least one compressor for compressing combustion air, at least one combustion chamber for combusting a supplied fuel, using the compressed combustion air, and also at least one turbine which is exposed to throughflow by the hot gases from the at least one combustion chamber. Both a first fuel on a carbon base, especially in the form of natural gas, and also a second fuel, in the form of a hydrogen-rich fuel or pure hydrogen, are used as fuel. A reduction of the CO.sub.2 emission without basic modifications to the installation is achieved by the first and the second fuels being intermixed and combusted together in the at least one combustion chamber.

According to one implementation a dual-fuel wall heater is provided that comprises a gas burner suitable for receiving a first gas or a second gas, a first pilot burner adapted to the first gas and a second pilot burner adapted to the second gas. The heater includes at least one pressure regulator, a control valve in fluid communication with the pressure regulator, and a selector valve in fluid communication with a gas outlet of the control valve. Each of the first and second pilot burners is arranged to direct a flame toward respective first and second thermocouples. The control valve includes an electromagnetic valve electrically connected to both the first and second thermocouples, the first and second thermocouples being arranged electrically connected in reverse polarity, such that in the event of the second gas being improperly supplied to the first pilot burner the resulting electromotive force generated by the first and second thermocouples is less than a disengagement threshold value of the electromagnetic valve.

A co-firing process is described using coal and processed biomass to reduce adverse by-products in a coal combusting apparatus. The coal feedstock is selected from coal, a coal substitute processed biomass, or an aggregate blend of coal and processed biomass. The biomass feedstock comprises processed biomass pellets. The total energy density is predetermined and can be similar to the coal component or higher than the coal component. The intracellular salt in the processed biomass is at least 60 wt % less for the processed organic-carbon-containing feedstock used to make the processed biomass pellets than that of the starting un-processed processed organic-carbon-containing feedstock.

The invention relates to particular burners, particularly to non-premixed or partially-premixed dual-fue burners with flexibility to change the heat input from the two fuels. Accordingly, said burners may be used in applications that needs operation of a burner in both single-fuel, and/or duel-fuel mode depending on furnace operation needs. The invention further relates to furnaces including the burners and methods of operating the burners.

Provided is a manufacturing method for a glass article, including a melting step of heating and melting glass raw materials in a melting furnace by using a burner (11) configured to burn fuel to form a flame (F). A hydrocarbon fuel and a hydrogen fuel are used in combination as the fuel. The melting step includes a step of adjusting a ratio of use between the hydrocarbon fuel and the hydrogen fuel.

A burner configured to produce a flame in a combustion zone is provided where the burner includes a combustion air conduit that provides combustion air to the combustion zone, a primary targeted gas conduit surrounded by the combustion air conduit that provides a targeted gas to the combustion zone, a secondary targeted gas conduit that provides additional targeted gas to the combustion zone, a primary fuel gas conduit surrounded by the targeted gas conduit that provides fuel gas to the combustion zone and a secondary fuel gas conduit that provides additional fuel gas to the combustion zone, where a portion of the fuel gas from at least one of the primary fuel gas conduit and the secondary fuel gas conduit is mixed with a portion of the targeted gas prior to mixing with the combustion air in the combustion zone.

A fluid heating system is disclosed. The fluid heating system may include a first valve and a second valve configured to selectively control a supply of a first fuel source and second fuel source respectively. The fluid heating system may further include an air inlet configured to receive ambient air in the fluid heating system. The fluid heating system may further include a controller configured to determine whether the fluid heating system is using the first fuel source and/or the second fuel source. The controller may be further configured to determine an optimal opening area of an air inlet of the fluid heating system based on the determination of whether the fluid heating system is using the first fuel source and/or the second fuel source, and cause to adjust an opening area of the air inlet based on the optimal opening area.