摘要:
A burner system and method of operating a burner for reduced NOx emissions. The burner system comprises a flame stabilizer, at least one fuel staging lance, an actuated valve, a temperature sensor and a controller. The amount of fuel to the flame stabilizer relative to the amount of fuel to the fuel staging lances is controlled depending on furnace temperature and/or furnace production rate.
摘要:
A method of operating a pyrolysis heater for reduced emissions of NOx and carbon monoxide. One or more wall burners, typically premix burners, are operated with more excess oxidant gas than one or more of the floor or hearth burners, which are typically non-premix burners. The invention takes advantage of different NOx emissions characteristics from different types of burners.
摘要:
A method of combustion and a reformer. The method includes combusting a fuel in a combustion region of an up-fired or down-fired reformer and forming non-uniform injection properties with a wall-bound burner. The combusting is performed in a combustion region by burners, wherein at least one of the burners is the wall-bound burner forming the non-uniform injection properties. The non-uniform injection properties generate a heat profile providing a first heat density proximal to a wall and a second heat density distal from the wall, the second heat density being greater than the first heat density. The non-uniform injection properties are formed by injection properties selected from an angle of one or more injectors, a flow rate of one or more injectors, an amount and/or location of oxidant injectors, an amount and/or location of fuel injectors, and combinations thereof.
摘要:
A method of combustion and a reformer. The method includes combusting a fuel in combustion region of an up-fired or down-fired reformer and forming non-uniform injection properties with a wall-bound burner. The combusting is performed in a combustion region by burners, wherein at least one of the burners is the wall-bound burner forming the non-uniform injection properties. The non-uniform injection properties generate a heat profile providing a first heat density proximal to a wall and a second heat density distal from the wall, the second heat density being greater than the first heat density. The non-uniform injection properties are formed by injection properties selected from an angle of one or more injectors, a flow rate of one or more injectors, an amount and/or location of oxidant injectors, an amount and/or location of fuel injectors, and combinations thereof.
摘要:
A burner system and method of operating a burner for reduced NOx emissions. The burner system comprises a flame stabilizer, at least one fuel staging lance, an actuated valve, a temperature sensor and a controller. The amount of fuel to the flame stabilizer relative to the amount of fuel to the fuel staging lances is controlled depending on furnace temperature and/or furnace production rate.
摘要:
A method of operating a pyrolysis heater for reduced emissions of NOx and carbon monoxide. One or more wall burners, typically premix burners, are operated with more excess oxidant gas than one or more of the floor or hearth burners, which are typically non-premix burners. The invention takes advantage of different NOx emissions characteristics from different types of burners.
摘要:
A burner for producing a plug-like flow and low NOx emissions. The burner has a central air jet and plural staged fuel jets surrounding the central jet. The ratio of the sum of the momentums of vector components of the staged jets along respective axes parallel to the central longitudinal axis of the central jet to the momentum of the central jet along that axis is within the range of 0.5 to 1.5 and most preferably 0.8.
摘要:
The present invention relates to a method and furnace for generating straightened flames in a steam methane reformer or ethylene cracking furnace where fuel-staged burners are used. Fuel staging may be used for reducing NOx emissions. Criteria for generating straightened flames are provided. These criteria relate to oxidant conduit geometry and furnace geometry. Techniques for modifying the furnace and/or burners to achieve these criteria are also provided.
摘要:
Combustion system comprising a furnace having a thermal load and a combustion atmosphere disposed therein; one or more fuel lances adapted to inject fuel into the combustion atmosphere; and one or more igniters associated with the one or more fuel lances and adapted to ignite the fuel injected by the one or more fuel lances into the combustion atmosphere.
摘要:
Method and apparatus for burning oil from an oil release in a body of water. A mixture of oil and water is collected from the surface of the body of water and separated into an oil-enriched portion and a water-enriched portion. The oil-enriched portion is passed to a burner where the oil-enriched portion is combusted with an oxygen-containing gas having an oxygen concentration of at least 25 volume % oxygen.