229 results about "Hydrogen combustion" patented technology

The invention belongs to the field of boiler waste heat utilization, and particularly discloses an alcohol-hydrogen fuel mixed combustion system utilizing boiler waste heat, which comprises a methanol cracker unit, a methanol supply unit, a methanol cracked gas supply unit, an alcohol-hydrogen burner unit and a smoke exhaust steam supply unit, the methanol cracker unit comprises a methanol cracker, a methanol inlet pipe, a cracked gas outlet pipe, a smoke exhaust inlet flange, a smoke exhaust outlet flange, a methanol shell side area and a smoke exhaust pipe side area, a plurality of heat exchange pipes are uniformly distributed in the smoke exhaust pipe side area, and the methanol inlet pipe is used for connecting the methanol supply unit and the methanol shell side area; the exhaust smoke inlet flange is used for connecting the methanol cracker unit and the exhaust smoke steam supply unit, and the methanol supply unit and the methanol cracked gas supply unit are both used for connecting the methanol hydrogen burner unit and the methanol cracker unit. By means of the self-designed methanol cracker combustion loop, liquid methanol and methanol cracking gas can be combusted at the same time, and the energy utilization rate is greatly increased.

The invention discloses a hydrogen energy production and production-and-use distributed energy supply system, which relates to the technical field of new energy, and comprises a hydrogen production module which comprises a proton exchange membrane electrolytic tank, an alkaline electrolytic tank and a solid oxide electrolytic tank and runs through a three-mode collaborative architecture, in combination with a light-electricity-heat synergistic catalysis device and a wastewater or industrial tail gas coupling hydrogen production device, the hydrogen storage and safety management module comprises a metal hydride hydrogen storage unit, a metal organic framework material hydrogen storage unit and a liquid organic hydrogen storage unit. According to the invention, multi-source, high-efficiency and low-cost hydrogen production is realized through the hydrogen production module with a three-mode collaborative architecture in combination with light-electricity-heat collaborative catalysis and wastewater / industrial tail gas coupling hydrogen production, and meanwhile, a solid oxide fuel cell and micro gas turbine combined cycle, a hydrogen combustion turbine direct drive and a multi-type energy storage unit in the energy supply module realize multi-source, high-efficiency and low-cost hydrogen production. And in cooperation with waste heat-cold energy gradient utilization, the energy conversion efficiency and the comprehensive energy utilization rate are greatly improved.

The invention belongs to the technical field of clean combustion, and particularly relates to a pulverized coal dense-thin separation and ammonia gas jet flow large-angle reverse blowing direct-current burner and a combustion system, and the direct-current burner comprises an ammonia gas channel, a burner channel and a pulverized coal dense-thin separator; the pulverized coal dense-thin separator is arranged in the combustor channel; the output end of the combustor channel is a thick-thin primary air nozzle, and a separator is arranged in the middle of the thick-thin primary air nozzle; an included angle is formed between the axis of the concentrated-phase primary air back-blowing nozzle and the axis of the combustor channel; the ammonia gas channel is arranged on the side edge of the combustor channel and is arranged close to one side of the concentrated-phase primary air back-blowing nozzle; the output end of the ammonia gas channel is an ammonia gas back-blowing nozzle which forms an included angle with the axis of the combustor channel; the included angle between the ammonia gas back-blowing nozzle and the axis of the combustor channel is larger than the included angle between the axis of the concentrated-phase primary air back-blowing nozzle and the axis of the combustor channel. Compared with the prior art, the problem that a large amount of NOx is easily generated during ammonia-doped combustion of pulverized coal is solved. According to the scheme, ammonia combustion is converted into hydrogen combustion, and high combustion efficiency and environmental protection performance are both considered.

The invention discloses a method for predicting and optimizing nitrogen oxide emission of an ammonia-hydrogen combustion chamber of a gas turbine, and the method comprises the steps: carrying out the data fusion and preprocessing according to the experimental data and simulation data of the nitrogen oxide emission of the ammonia-hydrogen combustion chamber; constructing a physical information neural network model; training a physical information neural network model according to the training data set; analyzing a chemical reaction path of the nitrogen oxide according to the physical information neural network model; and optimizing the characteristic parameters of the ammonia-hydrogen combustion chamber based on the path contribution degree according to the physical information neural network model. According to the method, the PINN model is established by utilizing experiment and simulation data, the conservation constraint and the reaction path constraint are set, so that the prediction precision of the model on the nitrogen oxide emission is improved, the efficiency and the physical interpretability of the model are improved, the contribution degree of the reaction path is quantified by utilizing the PINN model, the combustion characteristic parameters are quickly searched and optimized, and the efficiency and the physical interpretability of the model are improved. The calculation time is shortened, and the optimization efficiency of the emission prediction of the nitric oxide in the ammonia-hydrogen combustion chamber is improved.

Storage system (1) for storing a gaseous medium, preferably hydrogen, comprising several tank containers (2) with a longitudinal axis (42), a first medium collector block (4), and a second medium collector block (6). One end (15) of each tank container (2) opens into the first medium collector block (4), and another end (16) of each tank container (2) opens into the second medium collector block (6), where they are fixed and sealed. Furthermore, the storage system (1) has at least one tie rod element (10), which tie rod element (10) is made of the same material as the tank containers (2).

In a grill-cooking apparatus including a burner that combusts hydrogen and a food mounting part provided above the burner, a washing-away effect of the excessive fat content by moisture contained in a hydrogen combustion gas can be enhanced. Each supporting rod part includes a flat part located at an upper end and configured to come into contact with food, a maximum-width part, which is located below and away from the flat part, and a Y-axis direction width of which is maximum, and an increasing-width part, a Y-axis direction width of which gradually increases from the flat part toward the maximum-width part. Preferably, each supporting rod part is provided with a decreasing-width part, a width of which gradually decreases from the maximum-width part toward a lower end.

The object of the present invention is a control method for verifying the presence of the flame in the combustion chamber (41) of a premixed gas burner (1), fed by an air and gas mixture mainly and / or essentially comprising hydrogen H2. The method is based on the use of at least one temperature sensor (6), the values whereof are sent to a control device (8) which uses them to calculate the derivative T′ over time of the temperature T to compare it to suitable feedback thresholds (Tau1, Tau2; Tau3, Tau4) to establish the ignition occurred, the ignition failure or flame extinguishment.

High-temperature and high-pressure gas is generated according to an internal combustion engine steam engine basic principle using method to drive piston motion, and the motion is converted into mechanical motion. The design principle of the hydrogen water vapor power internal combustion steam engine is based on the principle. According to the characteristic that the combustion temperature of hydrogen is high, the characteristic that water can be electrolyzed into hydrogen and oxygen, and the characteristic that the boiling point of the water under conventional atmospheric pressure is 100 DEG C, the hydrogen water vapor power internal combustion steam engine is integrated to obtain a result.

The present disclosure provides a method and apparatus for high purity hydrogen combustion liquid hydrocarbon cracking. In one embodiment, the method may include: preheating a liquid hydrocarbon feedstock in a first heat exchanger external to the furnace; adding steam to the preheated liquid hydrocarbon feedstock to form a fully or substantially fully vaporized stream; heating the fully or substantially fully vaporized stream in a second heat exchanger external to the furnace; and cracking the heated fully or substantially fully vaporized stream after preheating the heated fully or substantially fully vaporized stream in the furnace to form a cracked gas stream comprising ethylene and hydrogen.

The invention provides a three-time air supply methanol-to-hydrogen combustion evaporator which comprises a heat exchanger, a combustion evaporator body, a combustion chamber and a three-time air supply device, the air outlet end of the heat exchanger communicates with the three-time air supply device, and the three-time air supply device is arranged at the top of the combustion chamber. The tertiary air supply device blows flames generated during combustion of the combustion chamber to the combustion evaporator, the heat exchanger is used for preheating normal-temperature air, and the tertiary air supply device supplies air to the combustion chamber. The three-time air supply design is adopted, so that combustion is more complete, the flame temperature distribution is uniform, the heat efficiency is greatly improved, and fuel waste is reduced. Through gas preheating and waste heat recovery, external energy input is reduced, the operation cost of the system is remarkably reduced, and the energy-saving and environment-friendly trend is met. The high-temperature gas guide pipe guides waste heat back to the heat exchanger, heat energy recycling is achieved, the overall heat energy utilization rate is increased, and emission loss is reduced.

This invention relates to a rapid prediction system and method for combustion characteristics of pure hydrogen micro-mixed combustors based on CNN. The invention addresses the problem of long design cycles for micro-mixed pure hydrogen combustors. By constructing a dataset representing the relationship between "inlet conditions and combustion characteristics," this invention enables rapid prediction of the combustion characteristics of pure hydrogen micro-mixed combustors based solely on the inlet conditions, significantly accelerating the variable operating condition design cycle. The prediction system includes a data acquisition module, a data preprocessing module, a dataset partitioning module, a prediction model construction module, a combustion characteristic prediction module, and a model update and optimization module. This invention belongs to the field of micro-mixed combustion technology.

The application discloses a multi-swirl head design and method of a gas turbine combustor, aiming at solving the problems of difficult matching of a swirler and a flame tube size and difficult prediction of swirl interaction in the early stage of research and development. The method is based on the potential flow theory, adopts a two-dimensional design method, calculates the swirl field velocity distribution through point vortices, sources / sinks and mirror vortices, and considers the wall surface of the combustor as a non-velocity boundary condition. The method is realized by Python language combined with NumPy and Matplotlib libraries, can input swirler parameters, grid settings and linear / convex / concave swirl number distribution types, calculate swirl numbers and circulation, generate streamline diagrams and velocity contour diagrams, and output swirl numbers, circulation and other data. The designed multi-swirl head comprises a central duty swirl and a plurality of main swirls surrounding the central duty swirl, and adjacent main swirls have different rotation directions. The method can judge the swirl interaction and optimize an ignition scheme, adapt to the flame tube, silo type and full annular combustor, and can be used in the scenes of low-pollution combustion of a gas turbine, combustion of an aero-engine and hydrogen combustion, so that the research and development cycle is shortened and the cost is reduced.

The utility model discloses a hydrogen-burning gas premixing burning surface, which comprises an upper box body and a lower box body, a water-cooling tube row I and a water-cooling tube row II are communicated between the upper box body and the lower box body, the water-cooling tube row I comprises a plurality of water-cooling tubes I, the water-cooling tube row II comprises a plurality of water-cooling tubes II, the water-cooling tubes I and the water-cooling tubes II are positioned in a hearth, and the water-cooling tubes I and the water-cooling tubes II are communicated with the upper box body. A sealing plate I, a sealing plate II and two flow guide plates are fixedly connected to the outer side wall of the water cooling pipe I, the two flow guide plates are fixedly connected between the sealing plate I and the sealing plate II, a first gas channel is formed between every two adjacent flow guide plates, the water cooling pipe II is located on the downstream of the first gas channel, and a second gas channel is formed between every two adjacent water cooling pipes II. A cavity is formed between the water cooling pipe II and the sealing plate II, the upstream of the hearth communicates with a gradually-expanding type premixing box, and a flow equalizing plate is fixedly connected into the gradually-expanding type premixing box. According to the utility model, stable airflow can be provided, the phenomena of backfire and blow-off are prevented, the combustion is more sufficient, and the emission of nitrogen oxides is reduced.

The utility model discloses a combustion-supporting hydrogen energy fuel combustion device which comprises a combustion chamber and an ignition valve, the ignition valve is installed on the side wall of the combustion chamber, a first support is installed at the bottom of the combustion chamber, and a supporting mechanism is arranged at one end of the combustion chamber and used for supporting hydrogen energy fuel feeding. A gas mixing chamber is arranged at the front end of a hydrogen energy fuel combustion chamber, so that hydrogen and oxygen are subjected to convection injection, and then the hydrogen and the oxygen can be fully mixed through stirring of rotating fan blades; the combustion-supporting effect is improved for hydrogen energy fuel combustion, the hydrogen energy fuel can be rapidly and completely combusted after entering the combustion chamber, and flames for hydrogen combustion are prevented from being very long.

The invention belongs to the field of fan design, and particularly relates to a hydrogen combustion lift fan system which comprises a lift fan, a box type spray pipe, an output shaft, a main engine and a superconducting motor. The lift fan is coaxially and fixedly connected with the box type spray pipe, one end of the output shaft is connected with rotor blades of the lift fan, the other end of the output shaft is connected with the superconducting motor and the main engine, and the superconducting motor is coaxially arranged in the main engine. A liquid hydrogen tank is arranged on the outer side of the main engine, a rectifying support plate is arranged in the lift fan, and an ignition electric nozzle is arranged on a cartridge receiver of the lift fan; hydrogen in the liquid hydrogen tank can flow into the ignition electric nozzle after passing through the superconducting motor and the rectifying support plate, and is burnt and heated after ignition to generate thrust. The energy conversion mode of a traditional lift fan is optimized, the temperature of airflow behind the lift fan can be increased from 300 DEG C to 1000 DEG C or above, the lift amplification of the lift fan exceeds 150%, and the requirement of a power system for lift is met. According to the scheme, hydrogen for cooling the superconducting motor can be recycled.

Disclosed in the present invention is a method for calcining cement clinker under hydrogen- and oxygen-enriched conditions. In the method, oxygen-enriched combustion is used at a kiln head of a rotary kiln, the oxygen-enriched combustion is realized by a first energy supply unit and an oxygen supply unit, and the oxygen supply unit delivers oxygen into a third pipe and a fourth pipe by means of a first branch and a second branch to increase the oxygen content of conveyed air, thereby realizing oxygen-enriched combustion at the kiln head. Hydrogen-enriched combustion is used in a decomposition furnace, the hydrogen-enriched combustion is realized by a hydrogen supply unit, and the hydrogen supply unit supplies hydrogen as a final combustion agent into the decomposition furnace at a kiln tail to realize hydrogen-enriched combustion. The present invention can increase the temperature of the flame at the kiln head, promotes burnout of fuel at the kiln head and kiln tail, improves energy utilization efficiency, decreases the resistance of a system, reduces heat consumption and power consumption, achieves carbon emission reduction in the cement industry, and has good economic and social benefits.

The present invention provides a hydrogen combustion system and a furnace hydrogen purging method that can inexpensively purge residual hydrogen in the furnace of a combustor in the event of an abnormal shutdown of the combustor. [Solution] The hydrogen combustion system comprises a first air supply pipe and a first exhaust pipe connected to a first combustor, a second air supply pipe and a second exhaust pipe connected to a second combustor, a first bypass pipe connecting the first air supply pipe and the second exhaust pipe, a second bypass pipe connecting the second air supply pipe and the first exhaust pipe, a first switch for switching to connect either a first air supply path between the air intake port of the first combustor and the first air supply source or a first bypass path between the air intake port of the first combustor and the second exhaust pipe, and a second switch for switching to connect either a second air supply path between the air intake port of the second combustor and the second air supply source or a second bypass path between the air intake port of the second combustor and the first exhaust pipe.

The invention belongs to the field of hydrogen combustion engines, and relates to a hydrogen fuel micro-scale non-premixing annular combustion chamber head grading air inlet device. The gas inlet assembly comprises a hydrogen entraining pipe, a hydrogen chamber, a hydrogen nozzle, an oxygen nozzle, an oxygen inlet baffle, a lead pipe and a combustion chamber. The hydrogen chamber can provide hydrogen for the multiple hydrogen nozzles at the same time, the number of gas inlet pipelines of the hydrogen nozzles is effectively reduced, and the flow of hydrogen sprayed out of the different hydrogen nozzles is more uniform. The hydrogen gas chambers are distributed in the radial direction of the head of the combustion chamber in a stepped and staggered mode, so that hydrogen gas guiding pipes of different gas chambers can be vertically arranged side by side, and the arrangement difficulty of the hydrogen gas guiding pipes is lowered.

A fueling system is disclosed for a spark-ignited internal combustion engine that combusts hydrogen fuel. The fueling system includes at least two storage tanks that store hydrogen fuel under pressure. A controller apparatus can be configured so that one of the storage tanks is selected for fueling depending on the engine load and the pressure in each of the storage tanks in order to effectively utilize fuel storage and provide improved combustion performance.

The invention relates to a storage system (1) for storing a fluid medium, preferably hydrogen, comprising at least one tank vessel (200) which has a cylindrical basic shape and has two hemispherical ends (202) for storing fluid medium, in particular hydrogen, wherein the tank vessel (200) comprises: a first shell element (10), which first shell element (10) forms a tank-vessel interior (201); a second shell element (12), which second shell element (12) surrounds the first shell element (10); an overwrap element (14), which overwrap element (14) surrounds the first shell element (10) and the second shell element (12); and a load-transfer element (18), which load-transfer element (18) is arranged at the ends (202) of the tank vessel (200). Furthermore, at least one sealing element (16) is arranged directly on the first shell element (10) at each of the ends (202) in the tank-vessel interior (201).

The invention relates to a methanol-to-hydrogen burner, and relates to the technical field of hydrogen-containing mixed gas separation and purification, the methanol-to-hydrogen burner comprises a burner body and a burner unit embedded in the burner body and used for communicating with a combustion chamber, and a waste hydrogen supply channel, a methanol gas supply channel and a combustion-supporting air supply channel are arranged in the burner body; the burner unit is provided with a plurality of vaporization energy supply modules which are uniformly distributed along the length direction of the burner unit; each vaporization energy supply module comprises a waste hydrogen branch channel communicated with the waste hydrogen supply channel, a methanol gas branch channel communicated with the methanol gas supply channel, and a plurality of combustion-supporting air branch channels communicated with the combustion-supporting air supply channel; the combustion-supporting air branch channel is of a Venturi tube structure, and a connecting channel is arranged between the waste hydrogen branch channel and the Venturi tube structure. The burner unit is further provided with a plurality of gas outlet channels communicated with the methanol gas branch channels. The method has the effect of reducing the hydrogen preparation cost and the equipment operation energy consumption.

Storage system (1) for storing a gaseous medium, preferably hydrogen, comprising several tank containers (2) with a longitudinal axis (42), a first medium collector block (4), and a second medium collector block (6). One end (15) of each tank container (2) opens into the first medium collector block (4), and another end (16) of the tank container (2) opens into the second medium collector block (6), where they are fixed and sealed. Furthermore, the first medium collector block (4) and / or the second medium collector block (6) each have a force introduction element (25), which force introduction element (25) has a defined surface structure (22) through which the tank containers (2) are integrated into the first medium collector block (4) and / or the second medium collector block (6) by means of a frictional connection (220).

The application provides a gas turbine combustor suitable for hydrogen combustion, and belongs to the technical field of gas turbines, which can at least partially solve the problems that existing hydrogen is easy to diffuse and backfire, has a higher risk, and conventional gas turbine combustors are not suitable for hydrogen combustion, and the application comprises a combustor, a duty assembly, a hot jet assembly and a premixing assembly are arranged at the head of the combustor, the premixing assembly comprises a mixing hole, in the mixing hole, fuel and air are rapidly mixed, when the fuel is hydrogen, the hydrogen and air in the mixing hole form micro-premixing, and since the size of the mixing hole is smaller than the quenching distance of hydrogen, the combustion flame formed after micro-premixing will not backfire, and the premixed combustion can also reduce the combustion temperature compared with diffusion combustion, which is beneficial to reducing thermal nitrogen oxide emissions, and the environmental protection effect is more excellent.

This invention provides a combustion chamber head device and ignition method for a pure hydrogen gas turbine. It relates to the field of gas turbine combustion chamber design, solving the problem of unreliable ignition in existing pure hydrogen combustion chambers. The device includes: a fuel distribution component, a multi-cluster burner, and a base; the multi-cluster burner includes a central combustion cluster and multiple interconnected combustion clusters surrounding the central combustion cluster; the multiple interconnected combustion clusters are divided into N-stage combustion chambers; the fuel distribution component includes a central fuel pipe and N-stage interconnected fuel pipes; each stage of interconnected fuel pipes is isolated from each other and from the central fuel pipe; the central fuel pipe is connected to the top of the central combustion cluster; each stage of interconnected fuel pipe is connected to the top of its corresponding combustion chamber; the bottom ends of the central combustion cluster and the N-stage combustion chambers are respectively connected to the base. This invention provides reliable start-up, stable operation, and low emissions over wide loads, achieving multi-cluster interconnection and reliable flame propagation, significantly improving ignition success rate and combustion stability.

The invention discloses a pulverized coal burner with a hydrogen-containing fuel burning nozzle, which is characterized in that pulverized coal and air mixed gas is output to a burning area through a first air pipe assembly, hydrogen-containing stable burning fuel is output to the pulverized coal and air mixed gas through a first fuel pipe assembly, and the pulverized coal and air mixed gas is ignited by an igniter; and an inner side second air pipe assembly, a second fuel pipe assembly and an outer side second air pipe assembly which are sequentially arranged in a sleeving manner are arranged, so that an inner side annular mixed flow and an outer side annular mixed flow which surround the pulverized coal and air mixed gas are respectively formed. According to the embodiment, the hydrogen burning nozzle in a micro-mixing diffusion burning mode is additionally arranged on a traditional coal burning burner, two paths of fuel enter, one path of fuel is ignited and stably burnt at the center of the burner, and the second path of fuel is divided into two paths from an inner second air path and an outer second air path to participate in burning and is responsible for increasing the air temperature and reducing the ignition delay time of pulverized coal; and the three paths of sprayed gas adopt a micro-mixing diffusion combustion mode, so that the conditions of tempering and sharp increase of NOx caused by a large-area high-temperature area are avoided.

A system includes a controller having at least one processor coupled to at least one memory device storing instructions that, when executed by the at least one processor, cause the controller to perform operations. The operations include receiving a first indication of a hydrogen limiting condition corresponding to a geographic area. The operations include, responsive to the hydrogen storage value being at or above a hydrogen storage threshold, comparing a predicted state of charge of a battery of the system to a state of charge threshold. The operations include causing a hydrogen combustion engine to consume at least a portion of the hydrogen fuel such that the hydrogen storage value decreases responsive to the predicted state of charge being at or above the state of charge threshold.

A propulsion assembly having a propulsion system comprising a fairing, a rotary assembly having a combustion chamber and housed in the fairing, an exhaust nozzle positioned downstream of the combustion chamber and delimited by a nozzle wall, and ensuring the discharge of the combustion gases originating from the combustion of the dihydrogen in the combustion chamber, a dihydrogen tank, a supply duct which connects the tank and the combustion chamber, and at least one vane positioned inside the exhaust nozzle, wherein the supply duct has a duct portion arranged in the vane.

Exhaust system (100) for a hydrogen combustion engine (10) designed to be operated with hydrogen gas as fuel, wherein the hydrogen gas is burned with air in at least one combustion chamber, wherein the exhaust system (100) comprises: - an exhaust pipe (102) for directing the exhaust gas flowing out of at least one combustion chamber, - a first catalyst device (110) arranged in the exhaust pipe (102) downstream of at least one combustion chamber, which is designed to at least partially treat the exhaust gas, - a second catalyst device (120) arranged in the exhaust pipe (102) downstream of the at least one combustion chamber and upstream of the first catalyst device (110), which is designed to at least partially treat the exhaust gas, and - a hydrogen gas injection device (170) arranged upstream of the second catalyst device (120), which is configured to inject hydrogen gas so that the injected hydrogen gas reacts with the oxygen present in the second catalyst device (120) to heat the exhaust gas, and - a bypass line (104) designed to direct the exhaust gas past the second catalyst device (120) to the first catalyst device (110).