187results about "Combustion using catalytic material" patented technology

The invention relates to a burner (10) for an exhaust tract through which exhaust gas from an internal combustion engine flows, comprising a combustion chamber (12) in which a mixture comprising air and fuel is to be ignited and thereby combusted, comprising an inner swirl chamber (18) through which a first part of the air flows, which has a first swirl-generating device (38) by means of which a swirl-shaped flow of the first part of the air can be effected, and a first outlet opening (20) through which the first part of the air flows, and comprising an outer swirl chamber (28) surrounding at least a longitudinal region of the inner swirl chamber (18) in the circumferential direction of the inner swirl chamber (18), through which a second part of the air flows, which has a second swirl-generating device (40) by means of which a swirl-shaped flow of the second part of the air can be effected,and has a second outlet opening (32) through which the second part of the air flows and the first part of the air flows through the inner swirl chamber (18) and the first outlet opening (20).

The invention discloses a high-temperature ammonia burner based on ammonia catalytic cracking hydrogen production and liquid ammonia atomization combustion and an operation method thereof, high-temperature air generated by a grate cooler is introduced into a catalytic cracking device, heat of the high-temperature air is utilized to promote liquid ammonia gasification, activate a catalyst and promote ammonia catalytic cracking to generate hydrogen, and ammonia, nitrogen and hydrogen mixed gas is formed; the reaction activity of the fuel is improved; medium-temperature air and mixed gas generated by the catalytic cracking device are supplied to the first to fifth gas inlets respectively, stable on-duty flames are formed under the action of a sliding arc, then the mixed gas introduced into the fourth gas inlet is ignited to form main combustion flames, high-temperature and active components generated by the main combustion flames promote liquid ammonia atomization, and the liquid ammonia atomization effect is improved. And the liquid ammonia is ignited to form axial graded flames. According to the invention, ammonia catalytic cracking hydrogen production and high-temperature air are fully utilized, the flame stability and temperature are improved, stable combustion of large-flow liquid ammonia can be maintained, and the problems of low flame temperature, difficult ammonia ignition, unstable combustion and the like are effectively solved.

A process for reducing the environmental contaminants in a ISO 8217 compliant Feedstock Heavy Marine Fuel Oil, the process involving: mixing a quantity of the Feedstock Heavy Marine Fuel Oil with a quantity of Activating Gas mixture to give a feedstock mixture; contacting the feedstock mixture with one or more catalysts to form a Process Mixture from the feedstock mixture; separating the Product Heavy Marine Fuel Oil liquid components of the Process Mixture from the gaseous components and by-product hydrocarbon components of the Process Mixture and, discharging the Product Heavy Marine Fuel Oil. The Product Heavy Marine Fuel Oil is compliant with ISO 8217 for residual marine fuel oils and has a sulfur level has a maximum sulfur content (ISO 14596 or ISO 8754) between the range of 0.05% wt. to 0.5% wt. The Product Heavy Marine Fuel Oil can be used as or as a blending stock for an ISO 8217 compliant, IMO MARPOL Annex VI (revised) compliant low sulfur or ultralow sulfur heavy marine fuel oil. A device for conducting the process is also disclosed.

A device for decomposing ammonia into a nitrogen-hydrogen mixture. The device comprising a cylindrical combustion chamber, a device for supplying air-ammonia mixture, at least one main channel for its supply, a tangential swirler, a spark plug installed in the combustion chamber, and a channel for supplying auxiliary fuel with increased flammability. A cylindrical body is introduced, inside of which a cylindrical combustion chamber is located coaxially with the formation between them, the entrance of the main channel and the tangential swirler, an additional annular channel for supplying and heating the air-ammonia mixture, wherein the cylindrical side surfaces of the body and the combustion chamber have at least one through hole for installation of the spark plug, a flame sensor, a device for secondary air supply and a flame stabilizer are introduced, wherein the combustion chamber is a cooling chamber, at the outlet of which a catalytic unit is installed.

The invention relates to a variable-power scale-free boiler and topology heat transfer quasi-super Stirling ecological heat engine technology, in particular to a working principle of direct-current scale-free super heat exchange high power density reaching 8-16 times fuel oil stress application variable power in the ZL2012105664497.4 patent achievement innovation field of the inventor, and the working principle is applied to normal low pressure, middle high pressure, critical pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure, high pressure and high pressure. Various types of boilers are free of scale obstruction, super in heat exchange, high in power density, ultra-low in cost rate, and safe in multi-module unit combination of less than 30-90L; a boiler heat exchange heat output'boiler 'system formed by connecting ten to hundreds of congruent module (tube panel) units in parallel is integrally matched with a magnesium catalysis water-based combustion-supporting combustion science'boiler' system of a '8-16 times fuel oil stress application 'Stirling'heat engine', and meanwhile, a new era of human cosmic rock planet carbon dioxide and carbon rock particle energy ecological metallurgy is created. The invention relates to a Stirling ecological heat engine, in particular to a variable-power scale-free multi-module once-through boiler and a topology heat transfer Stirling ecological heat engine, wherein the variable-power scale-free multi-module once-through boiler and the topology heat transfer Stirling ecological heat engine are used for gathering metamorphosis heat radiation and a three-guide interlining heat transfer and exchange body heat output system under the constraint of extreme-effect

The present invention relates to a liquid ammonia and coal-fired complementary power generation system and method, the system includes a main burner and a separate overburnt air burner arranged in a furnace, an economizer, an ammonia injection grid, an SCR denitration reactor and an air preheater are arranged in sequence in the tail flue connected to the furnace outlet flue, and an ammonia fuel burner is arranged in the main burner area; the ammonia injection grid is arranged on the inlet flue of the SCR denitration reactor; an SCR inlet flue gas sampling device is arranged on the flue between the economizer outlet and the ammonia injection grid; an SCR outlet flue gas sampling device is arranged on the flue between the SCR denitration reactor and the air preheater; the system also includes an ammonia supply device, which is respectively connected to the ammonia fuel burner and the ammonia injection grid. In the present invention, not all ammonia fuel is directly sprayed into the furnace, and this design method can improve the efficiency of the mixed combustion of ammonia fuel and coal powder, which is conducive to the ignition and stable combustion of ammonia fuel.

Burner (1) for a reforming reactor including an oxidizer pipe (4) arranged coaxially within a process gas annular channel (5), wherein the nozzle (10) has a trumpet-like shape and the lip (16) of the nozzle has a wave or sinusoidal profile.

Unburned ammonia is reduced using ammonia as a fuel. A burner (10) is provided with a burner (11) that injects a fuel containing ammonia into a combustion space (S), and a refractory material (12) that defines at least a part of the combustion space (S), blocks the passage of combustion gas, and contains a catalyst (C) that decomposes ammonia into hydrogen and nitrogen on a surface (1b) that defines at least a part of the combustion space (S).

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 combustion of an ammonia mixed fuel, according to one embodiment, comprises: a fuel adjustment step of preparing a mixed fuel containing ammonia and hydrogen by mixing ammonia and hydrogen such that hydrogen is mixed in an amount in excess of gaseous ammonia on a volume basis; and a combustion step of supplying the mixed fuel and oxygen to an ammonia combustion catalyst to perform combustion.

The present invention discloses a system and process for eliminating methane pollution in the exhaust gas of LNG-powered ships based on catalyst atomization. The system includes a chimney, a water vapor absorption module, a methane reactor, a ball mill module, a catalyst atomization module, and an air supply module. The methane reactor includes a reaction chamber and a heating chamber. The inlet and outlet of the catalyst atomization module are connected to the ball mill module and the reaction chamber via pipelines, respectively, for uniformly atomizing the methane combustion catalyst crushed by the ball mill module into a mist state. The inlet and outlet of the water vapor absorption module are connected to the top of the chimney and the reaction chamber of the methane reactor via pipelines, respectively. The air supply module is connected to the reaction chamber via pipelines for providing balancing gas and combustion-supporting gas to the reaction chamber. The inlet and outlet of the methane reactor's heating chamber are connected to the middle and bottom of the chimney via a heating pipe and a return air pipe, respectively. Through catalyst atomization and chimney heat recycling, methane pollution in the exhaust gas of LNG ships can be eliminated at low cost and with low energy consumption.

The invention relates to a catalytic combustion heating system capable of controlling the oxygen content. The catalytic combustion heating system comprises a mixer, a heat exchanger, a heater and a catalytic combustor. An outlet of the mixer is communicated to a cold source inlet of the heat exchanger, a cold source outlet of the heat exchanger is communicated to an inlet of the catalytic combustor through the heater, an outlet of the catalytic combustor is communicated to a heat source inlet of the heat exchanger, and a heat source outlet of the heat exchanger is communicated to an inlet of the mixer; the catalytic combustor is provided with a heat conduction system. In order to overcome the defects in the prior art, the catalytic combustion heating system capable of controlling the oxygen content is provided, air is diluted by non-combustible gas, and the oxygen content in premixed gas is controlled by adjusting the flow of the non-combustible gas.

This invention relates to a novel honeycomb activated carbon for adsorption-desorption catalytic combustion processes, belonging to the field of activated carbon technology. The novel honeycomb activated carbon comprises the following raw materials: a composite matrix, a composite activator, cobalt nitrate hexahydrate, zirconium oxynitrate hydrate, platinum nitrate, polyvinylpyrrolidone, and hexadecylamine. This invention uses beet pulp, enoki mushroom residue, and king oyster mushroom residue as the composite matrix to provide a large number of hydroxyl groups. Potassium bicarbonate and triammonium phosphate are used as the composite activator to dehydrate, condense, and interconnect the numerous hydroxyl groups on the composite matrix, effectively increasing the pore structure of the system and providing a large number of adsorption sites, facilitating the adsorption and mass transfer of VOCs. Simultaneously, the introduction of cobalt, zirconium, and platinum metal elements significantly improves the catalytic combustion performance of the system for VOCs. The addition of polyvinylpyrrolidone and hexadecylamine further enhances the catalytic combustion performance of the system.

The invention discloses a clean combustion method of biomass fuel, which is characterized in that a Ni-Co-Ce-Zn-O / Al2O3 quaternary gradient structured catalyst is designed and prepared for the first time, and abundant oxygen vacancies and redox cycle networks are constructed through multi-metal component atomic-scale compounding; a'porous carrier-active layer-surface modification layer 'gradient configuration is adopted, and catalytic activity, adhesive strength and inactivation resistance are synergistically regulated and controlled on a nano-micron scale. A special sol-gel and segmented coating process is combined, the catalyst forms a uniform and firm active coating with a high specific surface area on the surface of the metal wire mesh cage, and excellent structural stability and catalytic durability are still kept under the conditions of high temperature, vibration and electric field-sound field coupling. According to the catalyst system, the soot ignition activity and the low-temperature conversion efficiency of CO and nitrogen oxide are remarkably improved, intrinsic synergy with an electric field and a sound field is achieved through the dielectric property and the surface dynamic response behavior of the catalyst system, and a catalysis-electricity-sound ternary coupling enhanced reaction microenvironment is formed.

The invention discloses a rare earth tailing-based aerogel catalyst for refractory coal and a preparation method thereof, and the preparation method comprises the following steps: a, pretreating rare earth tailings rich in cerium oxide to obtain raw material powder; b, carrying out modification treatment on the raw material powder obtained in the step a to obtain modified powder; and c, preparing rare earth tailing-based aerogel from the modified powder obtained in the step b, and grinding to obtain the catalyst. The rare earth tailing-based aerogel catalyst prepared by the invention has a relatively high specific surface area and a rich pore structure, obviously improves the combustion efficiency of fire coal, can be suitable for fire-retardant solid fuel, realizes wide-load stable combustion of fire-retardant coal powder, expands the coal type adaptability of a unit, reduces the use amount of long flame coal, and reduces the production cost. The coking problem is effectively solved.

The fuel preheater 10 comprises a first mixer 1, which is provided in a fuel supply line L1 connected to a combustion unit 100 that burns fuel comprising ammonia, wherein the fuel supply line L1 supplies ammonia to the first mixer 1, the first mixer 1 being connected to an oxidizer supply line L2 which supplies an oxidizer, and mixing the ammonia flowing in the fuel supply line L1 with the oxidizer from the oxidizer supply line L2 to produce a mixed gas, and a reactor 2, which is provided downstream of the first mixer 1 in the fuel supply line L1, wherein the reactor 2 comprises a catalyst which promotes a reaction of the ammonia and which causes an exothermic reaction, wherein the catalyst causes the exothermic reaction with at least a portion of the ammonia in the mixed gas supplied by the first mixer 1, and the Mixed gas heated.

The invention relates to a self-heating integrated reforming hydrogen production device capable of meeting a mobile hydrogen production demand, the self-heating integrated reforming hydrogen production device comprises a reforming cavity, a catalytic combustion cavity and an evaporation cavity which are sequentially stacked from top to bottom, and an outlet of the evaporation cavity is connected to an inlet of the reforming cavity; s-shaped channels are formed in the reforming cavity, the catalytic combustion cavity and the evaporation cavity, and the circulation sections of the S-shaped channels have gradually-changed section widths in the flowing direction. The reforming cavity is filled with a catalyst beneficial to reforming reaction, a foam metal catalyst carrier is placed in the catalytic combustion cavity and carries a catalyst beneficial to catalytic combustion reaction, and the evaporation cavity is filled with foam metal with high porosity. The reactor disclosed by the invention is stable in catalytic performance, can be used for mobile equipment, and can be automatically and quickly started at normal temperature so as to prepare hydrogen-rich gas. The invention relates to the technical field of fuel reforming hydrogen production.

The application discloses a high-temperature ammonia combustor based on ammonia catalytic cracking hydrogen production and liquid ammonia atomization combustion and an operation method thereof. High-temperature air generated by a grate cooler is introduced into a catalytic cracking device, the heat of the high-temperature air is utilized to promote liquid ammonia gasification, and the catalyst is activated to promote ammonia catalytic cracking to produce hydrogen, thereby forming ammonia, nitrogen and hydrogen mixed gas and improving the reaction activity of fuel. The medium-temperature air generated by the catalytic cracking device and the mixed gas are respectively supplied to first to fifth gas inlets, and stable service flames are formed under the action of sliding arcs, and then the mixed gas introduced into the fourth gas inlet is ignited to form main combustion flames, and the high temperature and active components generated by the main combustion flames promote liquid ammonia atomization and ignite the liquid ammonia to form an axial staged flame. The application fully utilizes ammonia catalytic cracking hydrogen production and high-temperature air, improves flame stability and temperature, can maintain stable combustion of large-flow liquid ammonia, and effectively solves the problems of low flame temperature, ammonia ignition difficulty and unstable combustion.

The method can include receiving a baseline signal curve, operating a thermal reactor, measuring a signal, optionally determining a state (e.g., state of health) of the thermal reactor, and controlling the thermal reactor based on the signal. The method can include receiving (e.g., determining, measuring, etc.) a resistance-temperature and / or resistance-time curve; operating a thermal reactor comprising resistively heating a porous catalytic element; measuring an electrical signal (e.g., resistance, current, voltage, etc.) of the thermal reactor; optionally inferring a temperature of the thermal reactor based on the electrical signal and the resistance-temperature; and controlling the thermal reactor based on the electrical signal. The system can include one or more of a reaction module (e.g., an electrical coupler or electrode and catalytic element, etc.), inlet and outlet valves, power source, electrical feedthroughs (e.g., leads, supports, etc.), sensors, and computing system (e.g. controller).

The utility model discloses a natural gas energy-saving device which comprises a reaction tank provided with rare earth tourmaline, a liquid tank provided with a liquid catalyst and a combustion chamber connected with the reaction tank and used for combusting natural gas, a natural gas inlet channel is arranged on the reaction tank, and the liquid tank is connected with the reaction tank through a catalytic pipeline. A flow pump for extracting a liquid catalyst is arranged on the catalytic pipeline; and a heater for heating and vaporizing the liquid catalyst is arranged on the catalytic pipeline between the flow pump and the reaction tank. The natural gas quality is improved by cutting natural gas macromolecules through rare earth tourmaline, the natural gas combustion efficiency is improved through the chemical catalysis effect of a catalyst on natural gas combustion, and the purposes of energy conservation and environmental protection are achieved by combining physical catalysis and chemical catalysis to improve the natural gas combustion efficiency.

The present disclosure teaches a system and method for generating power by a thermal power plant. The system and method includes a fuel heating chamber configured to receive a nano-thermite fuel, an induction assembly configured to inductively heat the fuel in the fuel heating chamber, and an electricity generating subsystem configured to convert heat from the heated nano-thermite fuel into electricity.

A fuel cell system (10) and a method of operating the same, the fuel cell system (10) comprising: a fuel cell stack (12) comprising an anode outlet (24) and a cathode outlet (20); a combustor (34) comprising a combustion chamber, at least one combustor inlet (38) and a catalyst (52); and a fuel cell stack outlet flow path (36) providing fluid communication between the anode outlet (24) and the at least one burner inlet (38) and between the cathode outlet (20) and the at least one burner inlet (38), the fuel cell stack outlet flow path (36) is for providing fuel cell stack off-gas from the anode outlet (24) and the cathode outlet (20) to the combustor (34). The fuel cell stack exhaust includes fuel and oxygen. The burner (34) is configured to receive the fuel and the oxygen only from the anode outlet (24) and the cathode outlet (20), and catalytically burn an off-gas fuel mixture of the fuel and the oxygen at the catalyst (52), and flame-combusting the exhaust gas fuel mixture upstream of the catalyst (52) in the combustion chamber. The method involves forming the off-gas fuel mixture from the fuel and the oxygen supplied from the anode off-gas outlet (24) and the cathode off-gas outlet (20) of the fuel cell stack (12), the off-gas fuel mixture being provided solely by the anode off-gas outlet (24) and the cathode off-gas outlet (20), and combusting the exhaust gas fuel mixture by catalytic combustion at the catalyst (52) or by flame combustion in the burner (34).

A catalyst for oxidizing coke in a low oxygen environment such as in a gas turbine engine of an aircraft. The catalyst includes a compound of formula NxM1−xO2−y. In the formula, x ranges from 0 to 0.9, y ranges from 0.02 to 0.2, N includes at least one of an alkaline-earth cation, an aluminum cation, a transition metal cation, or a rare-earth cation, M is silicon or a rare-earth element, and N has a different atomic radius than M, N has a different oxidation state than M, or N has a different atomic radius and a different oxidation state than M.

A combustor (40) includes a housing (41) having an open first end and a closed second end (41b), an inlet that introduces fuel and oxidizing gas into the housing (41) such that a tubular flow (F1) is generated in the housing (41), an ignition plug (44) disposed at the second end (41b), and an ignition unit that generates a spark (P1) between a positive electrode (45) and a negative electrode (46). The positive electrode (45) and the negative electrode (46) are each located at a position where a distance (L1) between them is shorter than a distance (L2) between the positive electrode (45) and an inner circumferential surface (41d) of the housing (41) such that a flame (P2) generated between the positive electrode (45) and the negative electrode (46) by the spark (P1) is formed only in a negative pressure region (A1).

The invention relates to a heating device (1) with at least one reaction unit (2) for generating heat from a reaction gas mixture which comprises hydrogen, gaseous hydrocarbon and / or oxygen, wherein the reaction unit (2) has at least one hydrogen catalytic converter (6) for flameless combustion of the hydrogen-comprising reaction gas mixture, and wherein the reaction unit (2) has at least one inlet (23) for the reaction gas mixture and / or the oxygen, and at least one outlet (24) for a heated exhaust gas mixture. According to the invention, the heating device (1) comprises at least one connecting portion (25) which fluidically connects the at least one inlet (23) and the at least one outlet (24) to one another, with the result that the heated exhaust gas mixture can be fed at least partially to the at least one inlet (23). The invention also relates to a method for operating a heating device (1).

The invention relates to a heating device (1) with at least one reaction unit (2) for generating heat from a reaction gas mixture comprising hydrogen, gaseous hydrocarbons, and / or oxygen, wherein the reaction unit (2) has at least one hydrogen catalyst (6) for flameless combustion of the hydrogen-containing reaction gas mixture, and wherein the reaction unit (2) has at least one inlet (23) for the reaction gas mixture and / or the oxygen and at least one outlet (24) for a heated exhaust gas mixture. According to the invention, the heating device (1) comprises at least one connecting section (25) that fluidically connects the at least one inlet (23) and the at least one outlet (24) so ​​that the heated exhaust gas mixture can be fed at least partially to the at least one inlet (23). The invention further relates to a method for operating a heating device (1).

The invention discloses an ammonia combustion combustion-supporting catalyst composition as well as a preparation method and application thereof, and provides the ammonia combustion combustion-supporting catalyst composition which takes a perovskite type multi-element transition metal oxide as an active component, can reduce the activation energy of ammonia combustion reaction, and can improve the combustion efficiency under the operating condition of a CFB (Circulating Fluidized Bed) boiler. Combustion of ammonia, CO and carbon in fly ash is effectively promoted in the hearth; the inorganic filler with high pore volume and specific surface area and the pseudo-boehmite provide a good dispersion effect for the active component, so that the combustion-supporting function of the active component on ammonia, CO and carbon in fly ash is further improved; the strength of the catalyst composition is also improved due to the interaction of the pseudo-boehmite and the inorganic filler; the rare earth tailings contain high effective components such as Fe2O3 and rare earth, the effects of reducing cost and recycling waste can be achieved by adding the rare earth tailings, the content of the effective components can be further increased by conducting modification treatment on the rare earth tailings, and the micropore structure of the rare earth tailings is improved.

The present invention relates to the technical field of metal aluminum fuel energy storage and utilization, specifically to a molten aluminum combustion system and method with added stabilizer. The system of the present invention includes a molten aluminum combustion reaction device, a stabilizer production device and a steam generating device connected to the molten aluminum combustion reaction device; the molten aluminum combustion reaction device includes a combustion chamber, an ignition device, and a gas distribution device; the combustion chamber is a quartz vertical reaction chamber, with cover plates provided at the top and bottom respectively, the top gas phase outlet is connected to a cooling system and an analysis unit in sequence, and a stabilizer inlet is provided at the bottom; the ignition end of the ignition device extends into the interior of the combustion chamber; the outlet of the gas distribution device is connected to the combustion chamber; a heat exchange medium inlet, a steam inlet and a stabilizer outlet are provided on the stabilizer production device; the heat exchange medium inlet is connected to the heat exchange medium outlet of the cooling system; the stabilizer outlet is connected to the stabilizer inlet; the steam generating device includes a steam chamber provided at the top of the combustion chamber, and the steam outlet of the steam chamber is connected to the steam inlet.

The present disclosure teaches a system and method for generating electrical power by a thermal power plant, the system and method including a fuel heating chamber configured to receive nanothermitic fuel, an induction assembly configured to inductively heat the fuel in the fuel heating chamber, and a power generation subsystem configured to convert heat from the heated nanothermitic fuel into electrical power.

The present invention discloses a catalytic combustion device, belonging to the technical field of purification of residual liquid from methanol-to-hydrogen production and hydrogen-containing waste gas. The catalytic combustion device includes a primary catalytic combustion reaction section, a secondary catalytic combustion reaction section and a gas circulation driving section. The catalytic combustion device is used for the purification treatment of residual liquid from methanol-to-hydrogen production, hydrogen-containing waste gas and the heat-conducting oil heating system. Air, hydrogen-containing waste gas, residual liquid from methanol-to-hydrogen production and methanol enter the catalytic combustion device respectively after pre-treatment. The flue gas after sufficient reaction is discharged from the air outlet. The reaction heat of the catalytic combustion device is taken out through the heat conduction of the heat-conducting oil between the heat exchange tubes in the primary catalytic combustion reaction section. The secondary catalytic combustion reaction section is an adiabatic fixed-bed structure, which can carry out deep purification treatment on the flue gas discharged from the primary catalytic combustion reaction.