465results about "Combustion chambers" patented technology

Combustion systems and associated methods are disclosed herein. In some embodiments, a combustion system comprises a first combustion zone, a second combustion zone downstream of the first combustion zone, and a heat module thermally coupled to the first combustion zone and / or second combustion zone. The first combustion zone is configured to (i) receive and combust preheated air and a first fuel and (ii) generate a first exhaust gas, and the second combustion zone is configured to (i) receive and combust the first exhaust gas and a second fuel and (ii) generate a second exhaust gas. The first exhaust gas can have a first excess air and the second exhaust gas can have a second excess air less than the first excess air. The heat module can comprise a thermionic converter or another heat-to-electricity converter able to generate a power output.

A system for compensating for a relative motion between a probe and an apparatus. The system includes a probe assembly, a sensor, and a computer. The probe assembly includes an actuator pack positioned exterior to the apparatus and a probe insertable into the apparatus. The probe includes a first end coupled to the actuator pack, a second end, and an elongated body extending therebetween. The sensor senses data indicative of a relative motion between the apparatus and the probe assembly. The computer is operably coupled with the sensor and the probe assembly to move the probe of the probe assembly in response to the sensor sensing the data indicative of the relative motion between the apparatus and the probe assembly.

A pyrolysis system for conducting a hydrocarbon pyrolysis reaction and related systems and methods are disclosed herein. In some embodiments, the pyrolysis system includes a combustion component, a reaction chamber thermally coupled to the combustion component, and a recycling component fluidly coupled to an output of the reaction chamber. The reaction chamber can be couplable to a supply of pyrolysis feedstock. The thermal coupling allows the reaction chamber to transfer heat from the combustion component to the pyrolysis feedstock to generate a product stream that includes hydrogen gas and solid carbon. The recycling component receives the product stream and can direct a portion of the product stream into the combustion component. In some embodiments, the pyrolysis system includes a controller configured to adjust various operational parameters of the pyrolysis system based on various goals for combustion fuel consumption, hydrogen gas output, energy consumption, reactor efficiency, and / or the like.

A method for combusting ammonia provided in a combustion feed (1) using a combustion arrangement (100) comprising a combustion section (110), a flue gas section (120), and a plurality of burners (111, 112) arranged in the combustion section (110) is provided, wherein the plurality of burners (111, 112) are operated using the combustion feed and oxygen delivered to the plurality of burners (111, 112), and wherein a flue gas (2) formed in the combustion section (110) is passed through the flue gas section (120). Further oxygen is delivered to the combustion section (110) via a plurality of gas injectors (114-117) arranged in the combustion section (110) separately from and in a distance to each of the plurality of burners (111, 112). A corresponding combustion arrangement (100) is also provided.

A pyrolysis system for conducting a hydrocarbon pyrolysis reaction and related systems and methods are disclosed herein. For example, a pyrolysis reactor according to the present disclosure can include a first chamber, a second chamber coaxial with and positioned within the first chamber, and a burner positioned at least partially within the second chamber. The burner can include a main body as well as a distal end region. The main body includes a fuel input channel and an air input channel. The distal end region includes a first orifice fluidly coupled to the fuel input channel and a second orifice fluidly coupled to the air input channel. The first orifice and the second orifice are positioned to create a mixture of the combustion fuel and oxygen downstream from the distal end region. The burner can also include an ignition component positioned to ignite the mixture.

The invention relates to the technical field of tangential boiler combustion, in particular to a direct-current burner and turbulent burner collaborative combustion device and method, and aims to solve the problems that a coal power unit only depends on pulverized coal combustion, the stable combustion effect is poor under the rated load of 20%-30%, the denitration efficiency is reduced during low-load operation, and combustion is unstable due to the fact that the coal quality deviates from a design value. According to the self-service combustion-stabilizing combustor, by means of the injection effect of direct-current primary air and direct-current secondary air of the direct-current combustor, a combustion-stabilizing cavity of the self-service combustion-stabilizing combustor and secondary air in rotational flow are cooperated, so that a center backflow area is formed in the center of the rotational flow combustor and serves as a stable ignition heat source to heat high-concentration pulverized coal, and meanwhile flame formed by combustion of the self-service combustion-stabilizing combustor can be used as a heat source for heating high-concentration pulverized coal. And primary air powder flame of the direct-current pulverized coal burner is ignited, external flame combustion-supporting technologies such as tiny oil or plasma are not used, and the stable combustion effect of a coal power unit only depending on pulverized coal combustion under the rated load of 20%-30% is achieved. The device is mainly used for improving the stable combustion effect of the boiler during working.

The invention relates to the technical field of mixed combustion of hydrogen, and discloses a coal-fired and hydrogen mixed combustion boiler system and a combustion method for mixed combustion of hydrogen in a coal-fired boiler, the coal-fired and hydrogen mixed combustion boiler system comprises a boiler body, a pulverized coal combustion unit, a hydrogen combustion unit, a first air pipe assembly and a second air pipe assembly; a main combustion area is arranged in the boiler body; the pulverized coal combustion unit comprises a first combustion assembly, one end of the first combustion assembly is connected with the main combustion area, and the two ends of the first combustion assembly are connected with a first air pipe assembly and a second air pipe assembly correspondingly. The hydrogen combustion unit is arranged below the pulverized coal combustion unit and comprises a hydrogen pipeline, a mixing chamber and a second combustion assembly, one end of the second combustion assembly is connected with the main combustion area, the other end of the second combustion assembly is connected with the mixing chamber, and the two ends of the mixing chamber are connected with the hydrogen pipeline and the second air pipe assembly respectively.

A pyrolysis system for conducting a hydrocarbon pyrolysis reaction and related systems and methods are disclosed herein. A pyrolysis reactor according to the present disclosure can include a first tube, a second tube coaxial with and surrounding the first tube, and a burner coupled to an end region of the first tube. The burner delivers heat to a first flow path in the first tube via combustion. An annulus between the second tube and the first tube defines a second flow path that is thermally coupled to the first tube such that a portion of the heat from the combustion is received by the second flow path. The pyrolysis reactor can also include a thermal component positioned at least partially within the first tube to help increase heat transfer. Additionally, or alternatively, the pyrolysis reactor can include a heat recycling component coupled to an output of the second tube.

The present invention discloses an ammonia-blended swirl burner with a multi-channel ammonia fuel pipe, which belongs to the technical field of burners. By arranging an ammonia fuel pipe assembly composed of an outer ammonia fuel pipe, an inner ammonia fuel pipe and an end ammonia fuel pipe in a primary air duct, the reliable and safe transportation of ammonia fuel in the swirl burner can be realized; and by setting the outlet of the ammonia fuel to a structure extending a certain distance from the outlet of the primary air duct, in combination with the trumpet-shaped outlet section at the end of the primary air duct and the flow-guiding refractory mechanism, the safe low-nitrogen and efficient combustion of ammonia fuel after being transported in the burner can be realized. The ammonia-blended swirl burner with a multi-channel ammonia fuel pipe in the present invention has a compact structure and is easy to use. It can not only ensure the air tightness of the ammonia channel, but also flexibly adjust the incident position and incident speed of ammonia, effectively realize the efficient and low-nitrogen combined combustion of coal powder and ammonia fuel, improve the environmental protection of coal-fired boilers during use, and reduce the operating cost of coal-fired boilers, and has good practical value.

The present invention discloses a thermoelectric generator and its heat collection structure and burner, which relates to the field of thermoelectric power generation technology, including a combustion chamber and a preheating part, wherein the preheating part is provided with a plurality of fuel channels and a fuel port connected to the fuel channel; the fuel port is connected to the combustion chamber; away from the fuel port, the combustion chamber space tends to become larger. In view of the technical problem of low energy density of the thermoelectric generator, by improving the heat collection structure and the structure of the burner, it can fully burn and improve the conversion efficiency and energy density.

The invention discloses a biomass-driven Stirling generator combined heat and power generation system and a control method thereof, the system comprises a fuel distribution subsystem, a heat distribution subsystem and a power generation subsystem, the fuel distribution subsystem comprises a solid biomass particle feed port, a gas preheater, liquefied petroleum gas and a first air blower; the heat distribution subsystem comprises a second air blower, a first combustion chamber, a second combustion chamber, a first waste heat recoverer, a second waste heat recoverer, a heat pipe, cooling water and a residential heat utilization system; the power generation subsystem comprises a Stirling generator, a power converter, an energy storage battery and a residential power utilization system. According to the method, cooling water and a heat source are used for controlling the output power of a generator, the cooling water flow is adjusted through cooling water temperature errors and the cooling water temperature error change rate, flow speed adjustment is configured through cooperation of a plurality of valves, the heat source is controlled by changing the mixing ratio and the supply speed of fuel, and the output power of the generator is controlled. And the power supply and heat supply requirements of the user are matched with the system output.

The application relates to a direct-flow combustor and swirl combustor cooperative combustion device and method, and belongs to the technical field of tangential circle boiler combustion technology. In order to solve the problems of poor stable combustion effect of a coal power unit only relying on pulverized coal combustion at 20%-30% rated load, reduced denitration efficiency during low-load operation, and unstable combustion caused by coal quality deviating from the design value, the application relies on the direct-flow primary air and direct-flow secondary air of a direct-flow combustor, the stable combustion cavity of a self-help stable combustion combustor, and swirl inner secondary air, so that a center backflow area is formed in the center of a swirl combustor, as a stable ignition heat source, high-concentration pulverized coal is heated, a flame formed by the self-help stable combustion combustor is ignited, a direct-flow pulverized coal combustor primary air powder flame is ignited, external flame combustion-supporting technologies such as micro-oil or plasma are not used, and the stable combustion effect of the coal power unit only relying on pulverized coal combustion at 20%-30% rated load is realized. The application is mainly used for improving the stable combustion effect of a boiler during work.

A device for generating pressure waves of high amplitude, in particular for boiler cleaning, has a pressure-resistant container (21, 40) with a combustion chamber (121) inserted therein, which can be filled with a flowable burn-off material via supply lines. The pressure-resistant container has a discharge opening (306) for the directional discharge of gas pressure generated by ignition of the combustible material. A piston (70) closes the discharge opening, can release it for directional discharge and can be pushed back into the initial position by a spring device. With respect to its longitudinal direction (305), the seat of the piston (70) has a piston surface (302) inclined obliquely to the discharge opening (306), which is arranged opposite a housing surface (303) also inclined obliquely to the discharge opening (306), the housing surface (303) opening opposite the piston surface (302) at an angle (304) oriented towards the discharge opening (306) from a closure line (65) oriented perpendicularly to the piston direction (90).

The invention discloses a liquid slagging boiler with a modular combustion chamber and a peak regulation method, and belongs to the technical field of fire coal consumption reduction of thermal power generating units. According to the method, on the basis of a combustion chamber of an existing liquid slagging boiler, the combustion chamber is divided into four modular combustion chambers with the same size, an independent fuel nozzle and an independent draught fan are installed on the outer side of each modular combustion chamber, so that each modular combustion chamber can be independently used, and in the peak regulation process, according to the peak regulation requirement, the modular combustion chambers can be used independently; and determining the use number of independent combustion chambers. The partition screens and the modular combustion chambers in the boiler are of detachable and splicable structures, so that each modular combustion chamber can be detached from the liquid slagging boiler to be replaced and spliced. According to the boiler, operation of the combustion chamber module can be accurately controlled according to actual load requirements, energy consumption is effectively reduced under the low-load condition, and the combustion efficiency is improved; and when the load is increased, sufficient steam supply is ensured.

Processes and apparatuses for heating process fluid in a furnace. Fuel to the furnace is either hydrocarbons or hydrogen. The fuels may be sent to different furnaces or be sent at different times to the same furnace. Furnaces that are configured to receive both types of fuels may have different exhaust paths. An exhaust path for hydrocarbon fuel flue gas includes a carbon capture process zone.

An apparatus for generating electricity via thermophotovoltaic (TPV) energy conversion is described. High efficiency is obtained by introducing a material into a combustion chamber that emits bright near-monochromatic visible light upon heating. This light is then directed to fall on an array of photovoltaic (PV) cells which convert the light to electricity. Heat and infrared radiation that is not absorbed by the PV cells is returned to the combustion chamber to further improve conversion efficiency.

This invention relates to a high-efficiency co-combustion device and method for a direct-flow burner and a swirl burner, within the field of tangential boiler combustion technology. To address the problem of tangential boilers failing to operate stably at 15% or lower rated loads, and the issues of nozzle overheating and burnout due to low primary air velocity in the direct-flow burner, as well as pulverized coal blockage in the pipes, this application utilizes a co-combustion method combining a direct-flow burner and a swirl burner. By introducing a system to increase the air velocity and temperature of the direct-flow burner and a supplementary air system for the swirl burner, the direct-flow primary air velocity is increased, thereby enhancing the direct-flow primary air ejection capacity. This allows for adjustment of the shape and size of the central recirculation zone and prevents nozzle overheating and burnout due to low air velocity in the duct. Simultaneously, increasing the temperature of the direct-flow primary air and the self-regulating combustion burner's primary air increases the pulverized coal temperature at the boiler inlet, strengthening initial ignition and burnout of the pulverized coal. This application is primarily intended to improve the stable combustion effect of boilers operating below 15% of rated power.

A system to be installed into a radiant tube for reduction of pollutants, the system having a body having a tube shape including a length LB, an outer diameter ODB, and an inner diameter IDB, wherein the body further comprises a proximal surface, a terminal surface, and a circumferential surface extending between the proximal surface and terminal surface, and at least two helical bodies each having a substantially helical shape including a length LH, and an outer diameter ODH, wherein an axial distance (E) between the at least two helical bodies is at least 1% of the length LH.

The present invention relates to particular combustors, and e.g., to a combustor comprising a central primary fuel lance, a pilot fuel conduit, a primary oxidant conduit, a secondary oxidant conduit, and optionally a secondary fuel conduit, which are arranged in a particular and advantageous manner so as to surround each other at least in their downstream sections. The invention also relates to a furnace comprising the burner and a method of operating the burner. The burner according to the invention provides, in particular, a particularly advantageous way that comprises a pilot burner as part of the main burner in order to ignite a liquid fuel flame in a cold furnace. If desired, the pilot flame may help extend the flammability limit or operating range of the liquid fuel burner.

A heating device comprises a thermally-conductive outer tube, and a combustor arranged to combust air and gaseous hydrogen input to the device and introduce resulting combustion products into a first end of the outer tube. The device includes an igniter arranged to ignite the air and gaseous hydrogen. Combustion products produced by the combustor flow from the combustor to an output of the device along a flow path such that they are in contact with the internal surface of the outer tube over at least a portion of the flow path. Apparatus for heating a flow of hydrogen comprises a conduit for conducting the flow of hydrogen from a principal input port to a principal output port, the apparatus further comprising the heating device located at least partially within the conduit between the principal input port and the principal output port.

The invention relates to a device for supporting at least two radiant heating tubes (3, 3') in a furnace chamber (2) of an industrial furnace, wherein each radiant heating tube (3, 3') is connected at one end to a burner and held against a first furnace wall of the furnace chamber (2), and wherein the free closed end of the radiant heating tubes (3, 3') projects into the furnace chamber (2). According to the invention, the device has a connecting element (7) with which at least two radiant heating tubes (3, 3') can be connected transversely to the axial direction (A). The connecting element (7) has a projection (9) that extends in the axial direction (A) of the radiant heating tubes (3, 3') and which is configured to rest in a holder (10) in the furnace chamber (2) in the axial direction. The invention further comprises an industrial furnace with a device according to the invention and a holder (10) configured to support the device in the furnace chamber (2).

To provide a heating device configured so that it can prevent a member for partitioning hydrocarbon and exhaust in a heat exchange part from corroding due to the hydrocarbon.SOLUTION: A heating device for hydrocarbon to be thermally decomposed into carbon and hydrogen includes: a burner; and a heat exchange part which, while partitioning exhaust discharged from the burner and the hydrocarbon, transfers heat from the exhaust to the hydrocarbon. The burner is configured to combust fuel with an air ratio of less than 1.SELECTED DRAWING: Figure 1

The invention relates to a heating apparatus (1) having at least one reaction unit (2) for generating heat from a reaction gas mixture comprising hydrogen, gaseous hydrocarbon and / or oxygen, wherein the at least one reaction unit (2) has at least one first reaction portion (3) with at least one hydrogen catalyst (6) for the flameless combustion of the hydrogen. According to the invention, the at least one reaction unit (2) comprises at least one second reaction portion (4) for combusting the gaseous hydrocarbon and / or the heating apparatus (1) comprises at least one separating device (5) for separating the gaseous hydrocarbon and the hydrogen. The invention also relates to the use of a heating apparatus (1) and to a method for operating a heating apparatus (1).

A method for heating a heating chamber to a temperature below the spontaneous ignition temperature of the fuel that is used, wherein fuel and air are reacted in flameless oxidation in a non-stoichiometric mixture ratio in a combustion chamber. The air ratio λ is at least lower than the stoichiometric ratio λ=1 such that the temperature in the combustion chamber does not exceed the temperature at which thermal nitrous oxide generation begins. Otherwise, λ is established such that the spontaneous ignition temperature of the fuel is exceeded. This results in two permissible air ratio ranges, between λmin and λ1 in sub-stoichiometric operation, and λ2 to λmax in superstoichiometric operation of the combustion chamber. The still-reactive gases released from the combustion chamber are made to react in the heating chamber, preferably by flameless oxidation. This avoids thermal nitrous oxide generation in the heating chamber.

A burner (1) for combusting metal powder, particularly iron powder, comprising a combustion chamber (2) containing a combustion space for holding a combustion flame during operation, the combustion chamber having an air inlet (3), a metal powder inlet (4), and a exhaust gas outlet (5), characterized in that the combustion chamber (2) has a recirculation channel (7) for recirculating exhaust gases, the recirculation channel (7) being in communication with the combustion space within said combustion chamber (2), and the recirculation channel (7) intersecting with the air inlet (3).

A modular combustion system for flexible energy generation is provided. The system comprises a plurality of combustion boilers, at least one oxidizer supply unit providing an oxidizer stream to the combustion boilers, at least one feeder to provide fuel to the combustion boilers, at least one particle removal unit to remove particles from a flue gas output stream from the combustion boilers, and a pollution removal unit to remove pollutant gases from the flue gas output stream. A process for flexible energy generation using the modular combustion system is disclosed that includes providing an oxidizer stream to a plurality of combustion boilers with at least one oxidizer supply unit, providing fuel to the plurality of combustion boilers with at least one feeder, removing particles from a flue gas output stream from the plurality of combustion boilers with at least one particle removal unit, and removing pollutant gases from a particle-free flue gas output stream with at least one pollution removal unit. A system for controlling wall heat flux in a pressurized coal combustion environment is disclosed that includes at least one burner; and at least one low-mixing, axial-flow boiler.

Method for calcination in an annular shaft furnace comprising a supply of material to be calcined at the top of an annular space (3) of the furnace into which the material descends, an introduction in (5) of first and in (6) of second combustion flue gases into this annular space, a discharge at the top of the furnace in (12) of an upper gas stream, a removal in (18) of a portion of the upper gas stream, a formation of a first oxidizing mixture by mixing this portion of the upper gas stream with pure dioxygen (19) and, to form the second combustion flue gases, a combustion of a fuel in this first oxidizing mixture, as well as an elimination in (20) of a lower gas stream containing the air for cooling the product, after said cooling.