14results about How to "Lower combustion temperature" patented technology

The application relates to a partition-injection air-bleed circulation combustion chamber and a liquid rocket engine, wherein the partition-injection air-bleed circulation combustion chamber comprises a combustion chamber body and a partition-injection injector; the combustion chamber body is provided with an oxygen inlet collector, a fuel inlet collector and an air-bleed collector; the partition-injection injector is installed on the upper end of the combustion chamber body and is provided with injection holes; the oxygen inlet collector and the fuel inlet collector are communicated with the partition-injection injector and inject oxidants and fuels into the combustion chamber body through the partition-injection injector; the air-bleed collector is installed on the outer side of the middle part of the combustion chamber body and is communicated with the combustion chamber body; the partition-injection injector is disc-shaped and is divided into an equivalence zone, an oxygen-rich zone and a fuel-rich zone from the center to the outside; a partition ring is fixed to the lower surface of the partition-injection injector; the partition ring is in the form of a ring cylinder structure; the partition ring is located between the oxygen-rich zone and the fuel-rich zone and is used for separating the oxygen-rich zone and the fuel-rich zone.

The application provides a combined power system based on a methanol fuel cell auxiliary power device and a turbofan main engine, which is applied to the field of aviation power technology and comprises a fuel supply system, a heat exchanger, a preheater, a methanol fuel cell auxiliary power device system and a turbofan engine core system; the fuel supply system is connected with the methanol fuel cell auxiliary power device system and the heat exchanger respectively; the heat exchanger and the methanol fuel cell auxiliary power device system are connected with the preheater; and the preheater is connected with the turbofan engine core system. The methanol fuel cell auxiliary power device can utilize the electric power generated by the fuel cell to drive an electric auxiliary turbocharger to generate high-pressure gas when the main engine is started, so that the high-pressure gas is led to the combustion chamber of the main engine and the combustion efficiency is improved; on the other hand, the electric power generated by the fuel cell can be utilized to preheat the fuel led to the main engine, so that the atomization quality of the fuel is improved and the combustion efficiency is further improved.

The utility model belongs to the technical field of combustors, and discloses a heat storage combustion flat single radiant tube device which is provided with a heat storage type combustor and a flame radiation flat single tube, and flames combusted by the heat storage type combustor are jetted in the flame radiation flat single tube. Formed flue gas flows back into the heat accumulating type combustor along the pipe wall of the flame radiation flat single pipe and is exhausted after heat is absorbed by a heat accumulator; the heat storage combustion flat single radiant tube device integrates combustion, heat transfer, smoke exhaust and heat storage, and during working, air and smoke need to be reversed, and fuel does not need to be reversed; the utility model has the beneficial effects of small volume of installation space in the furnace, compact structure, uniform temperature of the radiant tube wall and the like.

The application discloses a novel air premixing flue gas internal circulation ultra-low emission gas combustion device and relates to the technical field of burners.The application solves the problem of excessive initial emission of nitrogen oxides of the existing gas boiler.The main flame injection nozzle is externally sleeved with a main flame gas nozzle;the main flame gas nozzle is provided with a plurality of flue gas entraining holes;the air passage end is provided with an air passage necking portion;the end of the duty flame gas pipe extends into the gas mixing cylinder and is provided with a plurality of duty flame short pipes at the end;the duty flame gas pipe is internally provided with a duty flame nozzle;and the air premixing holes are arranged on the front pipe wall of the duty flame nozzle.The application completes the partial air premixing in the duty flame gas pipe, improves the duty class gas combustion speed, introduces the flue gas into the combustion device, increases the inert gas content in the combustion zone, dilutes the oxygen concentration through heat absorption of the flue gas, reduces the combustion speed and temperature, and thus inhibits the generation of NOx.

The utility model relates to a kind of fireproof structure of building deformation joint, belong to deformation joint technical field.The fireproof structure of building deformation joint, comprising: deformation gap, two building walls are combined to form deformation gap, the inside of the deformation gap is provided with cover plate, the both sides of the cover plate are penetrated to the inside of adjacent wall;Fireproof mechanism, the fireproof mechanism is installed in the inside of deformation gap, the fireproof mechanism is set in the below of cover plate;Wherein, the fireproof mechanism includes the fireproof rock wool fixedly connected in the below of cover plate;Combustion medium is gradually consumed in limited space, and combustion temperature is gradually reduced, mixed gas mass enters the inside of top cavity frame, top cavity frame keeps relatively good low-temperature effect, mixed gas mass exchanges heat through top cavity frame, and is discharged to both ends outside, reduces the situation that flame continues to burn fiercely, forms protection to the flame of combustion, and reduces the trend that flame burns surrounding building.

This invention relates to a gas water heater, comprising a combustion assembly, a heat exchange assembly, and an atomizing assembly. The combustion assembly includes an inner shell, an outer shell, and a burner. A combustion chamber is located within the inner shell, with the burner positioned below it. The heat exchange assembly is positioned above the inner shell, and the outer shell surrounds the periphery of the inner shell, with a gap between them forming a sealed cooling channel. This cooling channel communicates with the combustion chamber. An atomizing assembly is located on one side of the outer shell, connecting the cooling channel and the condensate pipe of the heat exchange assembly. This atomizing assembly atomizes the condensate generated by the heat exchange assembly and delivers it to the cooling channel for heat exchange between the outer and inner shells, reducing their temperatures. Part of the atomized condensate can also enter the combustion chamber from the cooling channel, absorbing heat from the burner and evaporating, thereby reducing the burner's combustion temperature and producing less polluting gas.

The application discloses a fire grate, a burner and a water heater, and relates to the technical field of water heaters, wherein the fire grate comprises a fire grate body and a combustion head, the fire grate body is provided with a mixing cavity, a first air inlet channel and a second air inlet channel, the mixing cavity is provided with a fire opening, the exhaust end of the first air inlet channel is communicated with the mixing cavity, the air inlet end of the first air inlet channel forms an injection port, the injection port is used for conveying gas and air to the first air inlet channel, the exhaust end of the second air inlet channel is communicated with the first air inlet channel or the mixing cavity, and the second air inlet channel is used for conveying air to the mixing cavity, the combustion head is arranged at the fire opening, and the combustion head is provided with a plurality of fire holes communicated with the mixing cavity; the technical scheme provided by the application can reduce the generation of thermal nitrogen oxides during combustion.

A multi-stage partition low-nitrogen ammonia gas cyclone burner comprises an internal air assembly, an internal air assembly is a passage of a rear thick and a front thin, an internal cyclone air cylinder is placed inside, and an internal air flow forms an axial cyclone after passing through the cyclone air cylinder; an ammonia gas assembly, an end of the ammonia gas assembly forms an annular gap with the internal air assembly, and ammonia gas uniformly flows into a combustion chamber through the annular gap; an external air assembly, the external air assembly is installed at the end of the ammonia gas assembly, external air flows out radially through a circle of small square holes at the end of the external air assembly, and forms a radial cyclone; a center combustion-supporting assembly, the center combustion-supporting assembly is a thin tube installed inside the internal air passage, and fuel is hydrogen; and an outlet combustion-supporting assembly, the outlet combustion-supporting assembly is a ring channel installed at the end of the external air assembly, a plurality of small nozzles are arranged outside the ring channel, and fuel is hydrogen. After ammonia gas is sprayed out from the annular gap, the ammonia gas can be uniformly mixed with internal and external cyclone air, the combustion-supporting assemblies as a whole form a wrapping range of a bottom high-temperature jet flow and a plurality of external high-temperature points, and ammonia gas can be stably combusted in the range.

The application provides an engine system and an engine combustion organization method, and relates to the technical field of engines.The engine combustion organization method comprises the following steps: the first injection element is arranged close to the axis of the piston element compared with the second injection element; the injection start time of the second fuel is earlier than the injection start time of the first fuel; the first injection element is used for spraying a plurality of first fuel beams, and the intersection of the plurality of first fuel beams and the piston top defines a first range; the second injection element is used for spraying a plurality of second fuel beams, and the intersection of the plurality of second fuel beams and the piston top defines a second range; the second range is located inside the first range, so that when the first fuel beam develops to the piston top, the second fuel in the second fuel beam is combusted in the space formed between the first fuel beam and the piston top. In this way, the pilot ignition of the first fuel can be realized by less second fuel, and then the replacement rate of 95% is helped to be realized, and then the emission of nitrogen oxides is helped to be reduced.

The utility model belongs to the technical field of combustors, and particularly relates to a low-nitrogen-emission premixing type combustor structure which comprises a shell, an air inlet mechanism, an air adjusting mechanism, a combustion mechanism, a fire stabilizing mechanism, a premixing mechanism and a control cabinet. The air adjusting mechanism comprises an air adjusting driving assembly and an air adjusting assembly. The combustion mechanism comprises an ignition assembly and a combustion assembly. The premixing mechanism comprises a combustion chamber, a smoke mixing disc and a mixing disc fixing pipe. According to the pre-mixing type combustor structure with low nitrogen emission, through the design of the pre-mixing mechanism, fuel gas, air and part of smoke can be fully mixed before combustion, and combustion sufficiency is guaranteed; a combustion chamber, a flue gas mixing disc and a mixing disc fixing pipe in the premixing mechanism are matched with one another, so that flue gas can participate in mixing, the combustion temperature is effectively reduced, and generation of thermal nitrogen oxides is inhibited and reduced; the premixing mechanism is arranged at the combustion mechanism, a mixer does not need to be specially arranged for the combustor, and the size is reduced.

The utility model discloses an automatic empty burning control system for treating tar in a kiln, which comprises a group of control units arranged at one end above a bottom plate, and an inert gas control assembly comprising a concentric-square-shaped inert gas pipe, a manual ball valve, a first electromagnetic pneumatic ball valve and a second electromagnetic pneumatic ball valve, the top of the control unit at the other end is provided with a concentric-square-shaped inert gas pipe, the concentric-square-shaped inert gas pipe is connected to a second gas outlet pipe, and the middle of the concentric-square-shaped inert gas pipe and the middle of the second gas outlet pipe are provided with a first electromagnetic pneumatic ball valve and a second electromagnetic pneumatic ball valve correspondingly. Manual ball valves are arranged on the two sides of the first electromagnetic pneumatic ball valve and the two sides of the second electromagnetic pneumatic ball valve. The automatic empty burning control system for treating tar in the kiln is of a structure for controlling nitrogen inert gas.

This invention discloses an ultra-low pollutant emission combustion device for natural gas internal flue gas circulation, relating to the field of burner technology, and solving the problem of excessive initial nitrogen oxide emissions from existing gas-fired boilers. The invention features a flue gas entrainment hole on the main flame gas nozzle; an air channel constriction at the end of the air channel; and a shift flame gas pipe extending into a gas mixing cylinder with several shift flame short pipes at the end. Gas is radially ejected from the shift flame short pipes and axially ejected from the shift flame gas pipes. Upon contact with the mixed combustion-supporting gas after passing through the swirl vanes, ignition occurs. The flame rotates along the sleeve and is ejected into the furnace, superimposing with the gas ejected from the main flame gas nozzle to stabilize combustion. This invention introduces flue gas into the furnace through the high-speed fluid ejection effect formed by the air channel constriction and the main flame ejector nozzle, increasing the inert gas concentration in the combustion zone. The flue gas absorbs heat and dilutes the oxygen concentration, reducing the combustion rate and temperature, and inhibiting NOx formation.

This invention relates to the C10L9 / 10 field of IPC classification, and particularly to a coal-saving catalyst for thermal power plants and its preparation method. The coal-saving catalyst, by mass percentage, comprises the following raw materials: 5-20% gluconate, 10-20% diol, 5-13% citrate, 3-10% oxygen-containing free radical organic matter, 1-3% molasses, 0.1-1% dispersant, and deionized water to make up the balance. The coal-saving catalyst prepared in this application has excellent effects in promoting coal combustion, reducing burnout, improving combustion efficiency, and reducing pollutant emissions. It also effectively enhances the mutual wetting effect of the coal system and strengthens the penetration of the coal-saving catalyst within the coal system. It is suitable for promotion in the thermal power field and has broad development prospects.

This application relates to a burner flue gas recirculation device, belonging to the technical field of burner technology. It includes a combustion outer cylinder, with an anti-backflow connecting pipe fixedly connected to the outside of the combustion outer cylinder. An adjustment mechanism is provided on the outside of the combustion outer cylinder, and an air inlet is fixedly connected to the top of the combustion outer cylinder. The adjustment mechanism includes a support frame, with a cylinder fixedly connected to the outside of the support frame. A sliding plate is fixedly connected to the drive end of the cylinder, and a sliding groove transmission hole is formed inside the sliding plate. A rotating component is disposed inside the transmission hole. This application efficiently converts the linear motion of the cylinder into the rotational action of the opening and closing plate, achieving stepless adjustment of the opening degree without a complex transmission mechanism. The coordinated rotation of the two opening and closing plates allows for flexible control of the flue gas passage area, thereby reducing combustion temperature, suppressing nitrogen oxide generation, and significantly improving combustion efficiency and environmental performance.