摘要:
A heater assembly can be used with a gas appliance. The gas appliance can be a dual fuel appliance for use with one of a first fuel type or a second fuel type different than the first. The heater assembly can include at least one pressure regulator, a housing, and an actuation member. The housing has a first fuel hook-up for connecting the first fuel type to the heater assembly, and a second fuel hook-up for connecting the second fuel type to the heater assembly. The actuation member can control a flow through the heater assembly based on whether the first or the second fuel hook-up is used.
摘要:
A dual fuel, staged air, low NOx gas burner. The burner assembly includes an elongated air inlet device having a first open end for introduction of air. A first fuel source conduit delivers a first fuel into the air inlet device to a plurality of axially aligned fuel fingers wherein the fingers are spaced in an annular pattern within the air inlet device. A second fuel source conduit delivers a second fuel into the air inlet device to a castellation arm assembly having a plurality of radially extending castellation arms with troughs therein, wherein the axially aligned fuel fingers are juxtaposed between the radially extending castellation arms.
摘要:
The invention relates to a method for operating a burner (7) of a gas turbine (2), whereby a fossil fuel (B) is gasified and the gasified fossil fuel (B) is fed as synthesis gas (SG) into the burner (7) for combustion, said burner being connected to the gas turbine (2). The synthesis gas (SG) is divided into a first partial current (SG1) and a second partial current (SG2) and the partial currents (SG1, SG2) are each fed into the burner (7) for combustion. The invention also relates to a power plant (3), particularly a gas and steam turbine system (1), comprising a gasification device (132) for a fossil fuel (B).
摘要:
A combustion system includes a fuel distributor configured to output a fuel, an oxidant source configured to output an oxidant, and a mixing tube defining a mixing volume aligned to receive the fuel and oxidant. The mixing tube is shaped to convey the fuel and the oxidant through the mixing volume at a bulk velocity higher than a flame propagation speed. The combustion system includes a flame holder aligned to receive the mixed fuel and oxidant and to support a combustion reaction of the fuel and the oxidant.
摘要:
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.
摘要:
A double valve set includes a housing, a first nozzle and a second nozzle. The housing includes an outlet tube formed thereon. The first nozzle is disposed in the outlet tube. When used alone, the first nozzle is adapted to transfer the natural gas. The second nozzle is detachably connected to the outlet tube. The second nozzle can be used to transfer the tanked gas without having to remove the first nozzle from the outlet tube.
摘要:
A method is for operating a burner of a gas turbine. A fossil fuel is gasified and the gasified fossil fuel is fed as synthesis gas into the burner for combustion. The burner is connected to the gas turbine. The synthesis gas is divided into a first partial current and a second partial current and the partial currents are each fed into the burner for combustion. A power plant, particularly a gas and steam turbine system, includes a gasification device for a fossil fuel.
摘要:
A double valve set includes a housing, a first nozzle and a second nozzle. The housing includes an outlet tube formed thereon. The first nozzle is disposed in the outlet tube. When used alone, the first nozzle is adapted to transfer the natural gas. The second nozzle is detachably connected to the outlet tube. The second nozzle can be used to transfer the tanked gas without having to remove the first nozzle from the outlet tube.
摘要:
An open air stove comprises a fuel supply line which can be connected to a fuel source, a fuel nozzle which is connected to one end of said supply line and which extends into a cylindrical inner part of an inner cup. The inner cup is mounted concentrically in a partially cylindrical outer cup, so that the cylindrical part of the inner cup extends at least partially into the cylindrical part of the outer cup. The relationship between the nozzle hole diameter &phgr;m, the inner diameter &phgr; of the cylindrical part of the inner cup, and the inner diameter &phgr;y of the cylindrical part of the outer cup is such that when &phgr;m lies in the range of 0.28-0.37 mm &phgr;i will have the value 24 +/−5 mm and &phgr;y will have the value 60 +5/−10 mm.
摘要:
The invention is a tangential entry, premixing fuel injector (10) for the combustion chamber (30) of a turbine engine. The injector includes a pair of arcuate scrolls (18) defining the radially outer boundary of a mixing chamber (28) and a pair of air entry slots (36) for admitting a stream of primary combustion air tangentially into the mixing chamber. The scrolls also include an axially distributed array of primary fuel injection passages (42) for injecting a primary fuel into the primary air stream. A flame stabilizing fuel injector centerbody (46) includes an impingement and transpiration cooled outlet nozzle (50) for introducing secondary fuel and secondary air into the combustion chamber. The nozzle (50) includes an impingement plate(74) with an array of impingement ports (76) and a tip cap (104) with an array of discharge passages (106). The impingement ports and discharge passages are in series flow, misaligned relationship so that secondary air exiting from the impingement ports impinges on the tip cap and flows through the core discharge passages to impingement cool and transpiration cool the nozzle. The disclosed injector runs cooler than a more conventional tangential entry injector and therefore is more durable. The improved durability is achieved even though the disclosed injector uses less cooling air than a more conventional tangential entry injector and discharges the cooling air at a lower velocity. The reduced cooling air quantity helps to minimize carbon monoxide emissions and the reduced discharge velocity improves the spatial and temporal stability of the combustion flame.