71 results about "Post combustion" patented technology

A heat engine 10, such as a gas turbine engine, has a controller 290 and a combustor, for example an afterburner combustor 120. The combustor has at least one fuel injection port 128 and at least one pilot ignition device 130. In use, the controller mitigates thermoacoustic instabilities in a gas flow, A, B within the heat engine by selectively energising the at least one pilot ignition device to ignite fuel discharged from the at least one fuel injection port. The heat engine can include a plurality of fuel injection ports radially distributed (170 Fig. 4) with respect to a centreline (9 Fig. 4) of the heat engine and can include a plurality of fuel injection ports angularly distributed (130 Fig. 4) around the centreline of the heat engine. The arrangement delivers a flame (139 Fig. 4) resulting from energisation of the at least one pilot igniting fuel discharged from the at least one fuel injection port, and the flame is blown-off across at least a part of an operating map of the heat engine. The heat engine may also include a main combustor 16.

The utility model relates to the technical field of kitchen utensils, and provides a novel furnace end which comprises a furnace end body provided with a combustion cavity, an ignition needle used for igniting liquid fuel and a heating device used for preheating the liquid fuel to promote gasification of the liquid fuel are arranged on the combustion cavity, and the furnace end body is provided with an air inlet device. A plurality of circles of air inlet channels which are arranged at intervals in the circumferential direction and penetrate through the side portion of the combustion cavity are formed in the side portion of the combustion cavity, the input end of the air inlet device communicates with outside air, the output end of the air inlet device communicates with the air inlet channels, and the outside air enters the combustion cavity through the air inlet device and the air inlet channels and forms spiral airflow spirally flowing in the combustion cavity. After being gasified, the liquid fuel is mixed with the spiral air flow, so that the gasified liquid fuel is fully combusted, and the technical problem that carbon black is easily generated in a combustion cavity due to insufficient combustion after the liquid fuel of an existing furnace end is gasified is effectively solved.

The invention discloses an efficient and energy-saving continuous melting method. The method comprises the following steps that S1, the temperature of fuel gas and the temperature of air tend to be balanced; the pretreatment comprises preliminary heating of air and preliminary heat exchange of fuel gas and air; s2, the fuel gas and the air which are subjected to temperature balance in the step S1 are guided into a premixing mechanism, the fuel gas and the air are fully mixed through the premixing mechanism, and uniform premixed gas is obtained; s3, the premixed gas obtained in the step S2 is guided into a burner, the burner sprays out the premixed gas and then combusts the premixed gas, and the copper raw material in the smelting furnace is continuously smelted; and S4, combustion state parameters in the smelting furnace are collected in real time through analysis monitoring equipment, the oxygen-enriched state or the oxygen-deficient state in the furnace is judged based on the combustion state parameters, the proportion of the fuel gas to the air is intelligently adjusted, and the combustion atmosphere in the smelting furnace is controlled. According to the method, energy consumption in the melting process of the copper raw material is remarkably reduced through energy recovery, and the technical effects of high efficiency and energy conservation are achieved.

The embodiment of the invention provides a coal quality detection method, device and equipment. The method comprises the following steps: acquiring a first spectrum of coal to be detected; acquiring a second spectrum of the coal to be detected; extracting a first coal quality detection result of the to-be-detected coal according to the first spectrum; extracting a second coal quality detection result of the to-be-detected coal according to the second spectrum; obtaining a final coal quality detection result of the to-be-detected coal according to the first coal quality detection result and the second coal quality detection result; and adjusting the coal blending ratio according to the final coal quality detection result. In this way, the coal quality can be rapidly detected through the spectrum, the accurate coal quality detection result is obtained, the situation that a coal sample needs to be manufactured and then combusted, and then the coal index is detected is avoided, the coal quality detection procedure is greatly shortened, the coal quality detection efficiency is improved, and the coal blending ratio can be rapidly adjusted.

The invention discloses a method for calculating explosion pressure load of charge with a shell based on chemical reaction of detonation products, which comprises the following steps of: obtaining detonation energy, detonation products generated by detonation and mass fraction of each detonation product, and determining further chemical reaction in the post-combustion process of the explosive and pre-exponential factors and activation energy of each detonation product; the explosion process is divided into a detonation stage, an adiabatic expansion stage and a post-combustion reaction stage; calculating the initial temperature and the initial pressure of an air mass generated by explosive detonation; constructing a finite element three-dimensional model of a detonation product air mass generated by the shell charge explosion in the closed space, and calculating related parameters of a detonation product at the end of the adiabatic expansion stage; and solving a time-history curve of the shell charging explosion pressure load in the post-combustion reaction stage. The method has the beneficial effects that the limiting effect of the shell on the chemical reaction of the explosive detonation product is introduced, the pressure load of the charge explosion with the shell is calculated, the analysis process does not depend on the specific test calibration working condition, and the universality is high.

The invention relates to the technical field of welding, and discloses a large-size steel structure welding preheating device which comprises a turbofan jet, one end of the turbofan jet is an air inlet channel, the other end of the turbofan jet is a rear combustion chamber, the turbofan jet is sleeved with a vortex sleeve, the front end of the air inlet channel is provided with a nitrogen compressor, and one end of the vortex sleeve is provided with a cold air discharge pipe. The cold air discharging pipe and the air inlet channel are located on the same side, and the hot air discharging pipe and the rear combustion chamber are located on the same side. Compared with the prior art, the device has the advantages that the turbofan jet generates high-temperature fuel gas flow, large-flow and high-flow-speed hot gas flow injection is achieved, the preheating range is wider, cold nitrogen is mixed into the gas inlet channel through the nitrogen compressor, the oxygen content of a combustion area is reduced, and the oxidation risk of a preheating area is reduced; the hot gas discharge pipe forms a low-oxygen hot nitrogen layer on the periphery of the high-temperature tail gas, so that oxidation is further inhibited while heat loss is reduced.

The invention belongs to the technical field of ship power and distributed energy, and particularly relates to a marine cogeneration system based on a compact reformer and an application method. The system comprises a combined heat and power supply module and a transcritical CO2 circulation module, the combined heat and power module converts chemical energy of gas fuel into electric energy and generates combustion tail gas. And the transcritical CO2 circulation module recovers and utilizes the waste heat of the combustion tail gas to generate power. Through deep coupling of the heat and power cogeneration module and the transcritical CO2 circulation module, the defects that in the prior art, a pre-reformer and a rear combustor are structurally separated, the system size is large, and the heat and mass transfer path is long are overcome, and the problems that in the prior art, the high-grade waste heat utilization rate is low, and the comprehensive energy efficiency of the system is not high are solved. And collaborative optimization of system miniaturization, multi-stage efficient utilization of energy and extremely low emission is realized.

A method of heating water in a tankless water heating appliance in conditions of low water flow or no water flow is disclosed. A water supply is introduced into a heat exchanger configured to transfer heat to the water supply from a burner when the water supply is contained in the heat exchanger. A pulse fire duration is determined for the burner and a pre-defined condition of the water supply is sensed. When the pre-defined condition is sensed, the burner is activated to fire for the pulse fire duration, and the burner is deactivated after the pulse fire duration is elapsed. The pre-defined condition of the water supply is monitored, such that when the pre-defined condition is sensed again, the burner is activated to fire for another pulse fire duration, and the burner is deactivated after the another pulse fire duration is elapsed.

A thermal energy carrier and a heating and power generation system are disclosed, belonging to the field of thermoelectric technology. Existing heating and power generation systems are generally horizontally positioned for easy connection of the exhaust outlet to a chimney. However, this arrangement causes fuel to flow back to the ignition needle, reducing ignition success rate and hindering fuel diffusion and volatilization. This invention includes an exhaust pipe and a radiator. The thermal energy carrier has an installation chamber at its front end. Multiple heat-absorbing ribs are arranged circumferentially on the inner wall of the installation chamber, forming an exhaust groove between adjacent ribs. After the burner is inserted into the thermal energy carrier, the combustion chamber of the burner communicates with the installation chamber, and the exhaust groove forms an exhaust channel with the outer wall of the burner. The exhaust pipe is located on the side of the thermal energy carrier and is connected to the exhaust channel to discharge flue gas from the exhaust channel. An insertion port is located at or near the top of the thermal energy carrier. The radiator is located at the rear of the thermal energy carrier to accelerate the heat diffusion rate.

The use of nitrogen-containing compounds as additives in a diesel fuel composition to reduce the impact of deposits in the post combustion system of a diesel engine when combusting said diesel fuel co

The invention relates to a process that integrates three techniques or processes, namely direct pyrolysis in a direct flow using heat generated by stoichiometric combustion techniques, in order to perform heat treatment with energy recovery on waste and derivatives thereof, followed by post-combustion of the gases generated in direct pyrolysis and stoichiometric combustion processes to generate heat and utilise the energy thereof. The functional technical composition of the set of integrated equipment (100) for executing the process comprises four basic parts: a means of direct pyrolysis (101) of chlorine-containing waste; a means of stoichiometric combustion (102) of non-pyrolysed and chlorine (Cl)-free waste; a means of post-combustion (103) of combustible gases and vapours generated in the previous processes; and a means of sensing, control and actuation (104).

Use of one or more ester compounds as an additive in a diesel fuel composition to reduce the impact of deposits in the exhaust gas recirculation system and / or the post combustion system of a diesel engine when combusting said diesel fuel composition. The one or more ester compounds are the reaction product of: a) an optionally substituted polycarboxylic acid or an anhydride thereof; and b) an alcohol of formula H-(OR)n-OR1, wherein R is an optionally substituted alkylene group, R1 is hydrogen or an optionally substituted hydrocarbyl group and n is 0 or a positive integer; provided that n is not 0 when R1 is hydrogen. A method of reducing the impact of deposits in the exhaust gas recirculation system and / or the post combustion system of a diesel engine is also disclosed.

This invention provides a control method for waste incineration equipment that reduces NOx emissions. [Solution] The combustion apparatus comprises a furnace into which the gas after combustion flows, a furnace body that includes a drying stage, a combustion stage, and a post-combustion stage and burns and transports the material to be incinerated, and, when the upstream side in the transport direction of the material to be incinerated is referred to as the front and the downstream side in the transport direction is referred to as the rear, a primary combustion chamber having a front ceiling portion extending forward from the furnace, a rear ceiling portion extending backward from the furnace, and a rear wall extending downward from the rear end of the rear ceiling portion, a secondary combustion chamber provided connected to the outlet side of the primary combustion chamber and having a secondary combustion gas supply nozzle, an optical measuring device provided in the primary combustion chamber for detecting targets in a specific wavelength band, and means for calculating the detection position of the target in the specific wavelength, and increasing the reaction rate of reduction in the downstream reduction region by increasing the NOx concentration early by activating the reaction of the unburned gas at the detection position and promoting the generation of NOx.

The invention relates to a furnace (1) for recycling photovoltaic modules (100), said furnace comprising a pyrolysis enclosure (2), a post-combustion chamber (3), a first circuit (411) and a second circuit (412) for distributing a combustible gas and an oxidizing gas, which circuits are connected to the enclosure (2), a third, neutral gas distribution circuit (6) designed to inject said gas into the enclosure (2), a fourth, water distribution circuit (7) designed to inject the water into the enclosure (2), a temperature sensor (32) for measuring what is referred to as the outlet temperature of the chamber (3), a pressure sensor (29) for measuring a pressure referred to as the internal pressure of the enclosure (2), and a controller (C) designed to control the injection of neutral gas by the third distribution circuit (6) on the basis of the outlet temperature and to control the injection of water by the fourth distribution circuit (7) on the basis of the internal pressure.

The utility model belongs to the technical field of metal smelting, and relates to a special-proportion combustion accelerant adding device for a smelting triple furnace, which comprises a liquid storage container for storing a combustion accelerant, a liquid conveying pump and a plurality of spray heads arranged in a side blowing furnace system and a fuming furnace system respectively. The spray head leading into the side blowing furnace system is connected to the liquid storage container through a first pipeline system, and the spray head of the fuming furnace system is connected to the liquid storage container through a second pipeline system. The first pipeline system and the second pipeline system are each provided with the liquid conveying pump and an adjusting valve used for controlling the liquid spraying amount of each spraying head. According to the utility model, the combustion accelerant adding device is arranged in the side-blown furnace system and the fuming furnace system, so that the combustion accelerant is reasonably added, the combustion accelerant can be fully stirred with raw coal or pulverized coal after being added and is uniformly distributed, and the product performance of the combustion accelerant is further improved and stabilized.

The application belongs to the technical field of ship power and distributed energy, and particularly relates to a marine combined heat and power system based on a compact reformer and an application method. The system comprises a combined heat and power module and a transcritical CO2 cycle module. The combined heat and power module converts the chemical energy of gaseous fuel into electric energy and generates combustion tail gas. The transcritical CO2 cycle module recovers and utilizes the waste heat of the combustion tail gas to generate power. The application overcomes the defects of the separation of the pre-reformer and the after-burner structure, the large system volume and the long heat and mass transfer path in the prior art, solves the problems of low high-grade waste heat utilization rate and low system comprehensive energy efficiency in the prior art, and realizes the collaborative optimization of system miniaturization, multi-stage efficient energy utilization and extremely low emission.

The utility model discloses a support frame for a gas-fired boiler, which comprises a burner, the left side of the burner is communicated with a gas-fired boiler main body, the bottom of the burner is provided with a support frame, and the bottom of the support frame is fixedly connected with a heightening frame. Through cooperation of the supporting frame and the mounting frame, the combustor is stably supported, vibration force generated by the gas boiler body difficultly drives the combustor to shake, in order to enable the combustor to work more stably, the motor is started, the motor drives the rotating plate to rotate, and the rotating plate drives the push rod to contract. The push rod drives the clamping plate to move towards the side close to the burner, after the clamping plate makes contact with the burner, the front-back direction of the burner is limited, the burner can be stably matched with the gas-fired boiler body for work for a long time, and the gas-fired boiler has the advantage of being safe and stable in operation; and the combustor cannot be driven by vibration force of the gas-fired boiler, so that the overall use stability of the gas-fired boiler is improved.

The invention relates to a pyrolysis furnace suitable for batchwise treatment, for breaking down photovoltaic modules, said pyrolysis furnace comprising: - a pyrolysis enclosure, isolated from the outside by a leaktight door; - a post-combustion chamber fluidically connected to the pyrolysis enclosure; - heating means for the pyrolysis enclosure and for the post-combustion chamber; - at least a first and a second location in the pyrolysis enclosure; - at least a first and a second removable support that are configured to support a plurality of photovoltaic modules and are arranged respectively in the first location and the second location; - a neutral gas distribution system designed to inject said neutral gas into the pyrolysis enclosure and to maintain a preliminary temperature at the second location that is lower than a pyrolysis temperature applied at the first location. The invention also relates to a pyrolysis method.

This combustion facility comprises: a furnace into which gas after combustion flows; a furnace body that includes a drying stage, a combustion stage, and a post-combustion stage and conveys an object to be incinerated while burning the object, the furnace body having, when referring to the upstream side in the conveyance direction of the object to be incinerated as the front and the downstream side in the conveyance direction as the rear, a front ceiling part extending frontward from the furnace, a rear ceiling part extending rearward from the furnace, and a rear wall extending downward from a rear end part of the rear ceiling part; a first nozzle that is provided to the rear wall or a region to the rear from the center of the rear ceiling part in the conveyance direction in the rear ceiling part, and discharges a first combusting gas toward the front; a second nozzle that is provided at a position on the front side from the first nozzle in the rear ceiling part and discharges a second combusting gas from the rear ceiling part toward the drying stage or the combustion stage; and a control unit that controls the amount of the second combusting gas to be discharged by the second nozzle on the basis of a target air ratio in a primary combustion region which is a region in the furnace body.

The invention provides a rotary detonation combustion chamber injection device with an air mixing circular seam. The rotary detonation combustion chamber injection device comprises an oxidizing agent circular seam, a fuel injection hole and the air mixing circular seam. The application object of the device is a rotary detonation combustion chamber, and the device is arranged at one end of an annular flow channel of the rotary detonation combustion chamber. In a working state, the air mixing circular seam starts supplying while the oxidizing agent circular seam and the fuel spraying hole supply normally. When rotating detonation waves propagate in the combustion chamber, the detonation waves are locally decoupled in the radial direction of the combustion chamber due to the fact that no fuel exists in the downstream position of the air mixing circular seam, and the pressure and the temperature are both reduced; the air and detonation wave combustion products are mixed at the head of the combustion chamber, and the temperature of the products is further reduced. Under the condition that the supply conditions of an oxidizing agent, fuel and mixed air are fixed, the rotating detonation wave propagation process and the air mixing process reach dynamic balance, the pressure and temperature of combustion products near an outer ring and an inner ring of a combustion chamber are reduced, and the uniformity of fuel gas parameters at an outlet of the combustion chamber is improved.

A solid oxide fuel cell (SOFC-C) with burners addresses the fast start-up, high weight power density, and emission control issues faced by SOFC in aerospace and other mobile vehicle applications by providing efficient clean power generation for full hybrid or partial hybrid propulsion systems. The SOFC-C may include one or more SOFC tubes and a combustion chamber integrated within a housing. Fuel may be provided through an anode portion of one or more SOFC tubes or stacks and combust upon exiting the one or more SOFC tubes or stacks. Combustion products may then be provided through the cathode portion of the one or more SOFC tubes or stacks, whereby contaminants may be reduced or removed from the combustion products through the cathode portion before exiting the housing as exhaust gas. The cathode inlet temperature may be controlled by controlling the fuel flow.

The invention belongs to the technical field of aero-engine tests, and relates to an afterburner experiment table rear combustion section which is mainly composed of a combustion section casing, a fuel nozzle with a single-stage cyclone, a composite flame stabilizing working unit and an ignition electric nozzle. A swirler I and a swirler II in the composite flame stabilizing working unit are utilized to form a swirling airflow and stable backflow area, and mixed gas in the backflow area is ignited by an ignition electric nozzle; according to the design, the synergistic effect of the swirler combination and the V-shaped evaporation tube flame stabilizer is optimized, and a rear water cooling and tail end spraying system of the combustion section casing is matched, so that efficient and clean combustion of the unburned fuel gas is ensured, the structure is compact, the economical efficiency is good, and the combustion efficiency is high. And the problem of emission treatment of unburned fuel gas in the afterburner test is effectively solved.

- related to the patent application with the title: Destroyers of sanitary - rate with technical characteristics - parameters: - constructive type: cylindric horizontal - with tunnel-type combustion chamber, with post combustion chamber on the flue gas path - fuel: GN - natural gases + green - H2 - thermal power 160 kW -- 1600 kW Pmax 3700 kW - temperature 1250 - 1300°C Tmax 1400°C with continuous online monitoring with analysis, metering and data, storage Sanitary-organic waste destroyer is characterized by the fact that: In addition to the combustion of sanitary -organic waste in a tunnel oven with burners on GN fuel - Natural Gas + Green H2, there is also a combustion of the flue gases in a post-combustion chamber with a burner on GN fuel + Green H2 for the purpose of burning dioxin and furans resulting from the combustion of plastic waste and in view of the classification as pollutants permitted by environmental legislation. The green hydrogen that is used by injecting into the natural gas supply pipeline replacing 20% of the natural gas consumption is produced by a modular station - Hydrogen production Electrolyser at the pressure of 1 ~ 4 bar, which uses solar energy: photovoltaic panels. Advantages: reduces natural gas consumption, increases yield, efficiency reduces costs, reduces harmful substances, burns sanitary - organic waste.

The invention discloses gasified slag composite fuel as well as a preparation method and application thereof. The gasified slag composite fuel is prepared from the following components in parts by mass: 40 to 60 parts of gasified slag, 30 to 50 parts of inflammable solid waste and 2 to 8 parts of clay mineral. The composite fuel provided by the invention takes gasified slag as a main raw material, and agricultural and forestry wastes or urban organic solid wastes as auxiliary materials. After the composite fuel is used for blending combustion of a coal-fired boiler, heat energy of carbon-containing substances in the composite fuel can be recycled, and meanwhile solid waste is deeply reduced; by blending combustion of the composite fuel provided by the invention, the consumption of boiler fire coal can be reduced, and the purpose of carbon reduction is achieved. The compound fuel provided by the invention is reasonable in volatile component and fixed carbon content matching, and the combustion characteristic is similar to that of fire coal; meanwhile, the particle size distribution characteristics of the composite fuel are further optimized. After the composite fuel provided by the invention is used for blending combustion, the combustion process is more stable, and the stability of the combustion working condition in a boiler is favorably maintained.

1. Name of the product in this design: Gas Distributor (120). 2. Purpose of this design: To disperse and burn natural gas. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: the front view.

A carbon recycling control system may generate electricity using blast furnace gas emissions from a blast furnace, the blast furnace gas emissions including carbon dioxide. A carbon recycling control system may concentrate the carbon dioxide from the blast furnace gas emissions using a post combustion carbon capture process, the post combustion carbon capture process resulting in a carbon dioxide rich stream. A carbon recycling control system may generate carbon monoxide at an electrolyzer using the carbon dioxide rich stream, the carbon monoxide combined with hydrogen gas to form a syngas. A carbon recycling control system may inject the syngas into the blast furnace.

The invention belongs to the technical field of wall-hanging stoves, and particularly relates to an air filtering and rainwater collecting integrated structure and a gas wall-hanging stove. Comprising a wall-hanging stove shell, a wall-hanging stove body is arranged in the wall-hanging stove shell, the top of the wall-hanging stove shell is connected with a coaxial smoke pipe, the coaxial smoke pipe is connected with the wall-hanging stove body, an air filtering and rainwater collecting structure is fixed to the inner wall of the top of the wall-hanging stove shell, and the position of the air filtering and rainwater collecting structure corresponds to that of the coaxial smoke pipe. According to the invention, air with residual dust particles or water vapor is blocked when passing through the filter screen, so that the air is purified, waste during combustion is reduced during final combustion, the heat exchanger is protected, and the heat efficiency is improved.

The utility model relates to low nitrogen combustor technical field, concretely relates to an external uniform mixing type low nitrogen combustor, including main pipeline, flow divider, gas shunt pipe, ignition gas gun, ignition device and flame monitoring device, and the main pipeline is respectively communicated with gas inlet and combustion -supporting air inlet who sets up, uses natural gas from gas inlet to enter the main pipeline inside, and directly runs to the flow divider downward, then directly shunts through a plurality of gas shunt pipes, and the gas can mix with the air in the premixer at the bottom of the main pipeline finally, then, when encountering open fire, can burn fully, the gas and air mixing structure of the application compares the ratio control structure under prior art, less by outside interference, gas and air directly premix in the burner's spout, then burn after encountering open fire, the structure is more simple, and flow delivery is more stable, and further can pass in gas spout premix gas and air, compared with the existing ratio control structure, will be more conducive to the stable combustion of the burner.

The invention provides a gas valve and a gas stove, and relates to the technical field of kitchen appliances, the gas valve comprises a valve body, a valve rod and a positioning piece, and the valve body is provided with a stir-frying fire gas channel; the valve rod comprises a rod body and a gear disc, the gear disc is arranged on the rod body in a sleeving mode and fixed to the rod body, a gear part is arranged on the gear disc, and the gear part comprises stir-frying gears; the rod body is rotationally mounted on the valve body, and a stir-frying fire hole site is formed in the rod body; the first end of the positioning piece is connected with the valve body, and the second end of the positioning piece abuts against the gear part. And when the second end of the positioning piece is located at the stir-frying gear, the stir-frying fire hole site is communicated with the stir-frying fire gas channel. According to the gas stove, the problem that a combustion system possibly has backfire after a user adjusts the gas valve to the stir-frying gear can be avoided, and then the safety performance of the gas stove can be improved.

The use of a nitrogen containing detergent as an additive in a diesel fuel composition to reduce the impact of deposits in an exhaust gas recirculation (EGR) system and / or the post combustion system o