121results about "Combustion using catalytic material" patented technology

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

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).

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.

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 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 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 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.

Exemplary chemical looping systems include at least one type of active solid particles and inert solid particles that may be provided between various reactors in exemplary systems. Certain chemical looping systems may include a reducer reactor in fluid communication with a combustor reactor. Some chemical looping systems may additionally include an oxidizer reactor in fluid communication with the combustor reactor and the reducer reactor. Generally, active solid particles are capable of cycling between a reduction reaction and an oxidation reaction. Generally, inert solid particles are not reactants in either the reduction reaction or the oxidation reaction.

A combustor, including: a catalyst bed portion supporting a catalyst capable of promoting a combustion reaction of fuel; a vaporizer which is arranged on the downstream side of the catalyst bed portion with respect to a flow of the fuel going through the catalyst bed portion and is configured to be able to use a combustion gas generated from the combustion reaction as a hot fluid; a manifold portion which is outside the catalyst bed portion and guides air in a direction opposite to the flow of the fuel going through the catalyst bed portion and has a wall portion on which a sidewall of the vaporizer is projected; and a fuel introducing portion configured to penetrate the wall portion of the manifold portion so that the fuel evaporated by the vaporizer can be introduced into the manifold portion.

The invention provides a fuel gas magnetization system and a fuel gas catalysis method thereof, and solves the problems of insufficient combustion, low boiler thermal efficiency and the like of the existing fuel gas pipeline, and the main scheme is that the fuel gas magnetization system comprises: the fuel gas pipeline, the opposite end of which is a fuel gas inlet and outlet to be communicated with external fuel gas; the two magnetic force generators are symmetrically arranged on the upper side and the lower side of the gas pipe, each magnetic force generator comprises a box body and at least one iron core, the box body is fixed in a hollow mode through an external support, the bottom end of the iron core is exposed out of the bottom face of the box body, and a plurality of coils are wound on the outer wall, arranged in the box body, of the iron core; the coil is wrapped by insulation paste, the box body is filled with circulating condensate water, a copper pipe is wound on the outer wall shaft section, corresponding to the iron core, of the gas pipeline, the upper end and the lower end of the copper pipe abut against and make contact with the iron core in each magnetic force generator, the matcher is electrically connected with the two magnetic force generators, and the matcher is electrically connected with the two magnetic force generators. The magnetic field intensities generated by the two magnetic force generators are matched and consistent; the cooling module comprises a water cooling module and an air cooling module, and the water cooling module is used for being communicated with condensate water in the box body for circulation; and the control cabinet is electrically connected with the magnetic force generators and the cooling module so as to adjust the magnetic field intensity generated by each magnetic force generator and matched cooling required parameters.

The invention discloses a catalyst composition for reducing NOx emission of an ammonia-doped combustion circulating fluidized bed boiler as well as a preparation method and application of the catalyst composition, and the catalyst composition comprises the following components by weight: (1) 25-60 wt% of spinel with the general formula of FeM2O4; (2) 10 to 30 weight percent of modified red mud; (3) 5 to 20 weight percent of CFB boiler fly ash; (4) 10 to 35 weight percent of one or two of kaolin and attapulgite; and (5) the balance of one or two of aluminum sol and silica sol. The catalyst composition is added into a CFB hearth, under the NH3-doped combustion working condition, conversion from NH3 to NO can be inhibited, the generated NO and NH3 are catalyzed to react with reducing substances generated in the coal burning process, NO is reduced into N2, and therefore the purpose of effectively removing NOx is achieved; meanwhile, due to the proper particle size distribution of the catalyst, the reduction reaction of NH3 and NO is catalyzed, NH3 escape is reduced, and the fuel utilization rate is increased.

The invention discloses a system and a process for eliminating methane pollution in tail gas of an LNG (Liquefied Natural Gas) power ship based on catalyst atomization, the system comprises a chimney, a water vapor absorption module, a methane reactor, a ball milling module, a catalyst atomization module and a gas supply module, and the methane reactor comprises a reaction inner cavity and a heating outer cavity; an inlet and an outlet of the catalyst atomization module are respectively communicated with the ball milling module and the reaction inner cavity through pipelines, and the catalyst atomization module is used for uniformly atomizing the methane combustion catalyst crushed by the ball milling module into a fog state; an inlet and an outlet of the water vapor absorption module are respectively communicated with the top of the chimney and a reaction inner cavity of the methane reactor through pipelines; the gas supply module is communicated with the reaction inner cavity through a pipeline and is used for providing balance gas and combustion-supporting gas for the reaction inner cavity; and an inlet and an outlet of the heating outer cavity of the methane reactor are respectively communicated with the middle bottom of the chimney through a heat supply pipeline and a gas return pipeline. Through catalyst atomization and chimney heat recycling, low-cost and low-energy-consumption elimination of LNG ship tail gas methane pollution is achieved.

A catalyst bed includes a structure defining a plurality of channels configured to receive flow of fluid to be chemically catalyzed. The plurality of channels are oriented at least partially non-parallel to an overall flow direction of the flow from inputs of the plurality of channels to outputs of the plurality of channels. A catalyst is exposed at an exterior of the structure.

The invention discloses a novel boiler burner with efficient mixing and stable burning characteristics, and relates to the technical field of heat energy power engineering and automatic control, the novel boiler burner comprises a main control fan assembly, a carbon granule pressing assembly, an atomizing and spraying assembly and a fuel conveying assembly, and through systematic cooperation of the carbon granule pressing assembly and the atomizing and spraying assembly, the fuel can be efficiently mixed and stably combusted. Unification of carbon granule forming, pore pre-oxygenation, catalytic adhesion and efficient fuel combustion is achieved, a carbon granule pressing assembly is pressed through an electric air cylinder driving mold, precise oxygenation of an oxygen pump and sealing protection of a baffle form a mechanical pneumatic closed loop, and the inherent problems of oxygen deficiency in fuel, insufficient burn-off rate and unstable forming of a traditional combustor are radically solved; the atomization spraying assembly achieves dual adaptation of adhesion forming and catalytic stable combustion of fuel by means of an iron acetylacetonate solution through common work of pressurized conveying of a diaphragm pump, pressure control of a pressure regulating valve and atomization permeation of an atomization nozzle, and it is ensured that the strength of the carbon block reaches the standard, and the combustion process is stable and controllable.

A tank arrangement includes a tank for liquid hydrogen, a boil-off management system having a catalyst, and a heater arranged on the hydrogen side behind a first pressure relief valve and thermally connected to the catalyst. The first pressure relief valve is configured to open when a specified first pressure is exceeded. The heater is designed as a passive metal hydride heater containing a metal hydride. A second pressure relief valve is arranged between the first pressure relief valve and the catalyst. The second pressure relief valve is configured to open when a specified second pressure, which is higher than the first pressure, is exceeded.

The present invention relates to a combustion apparatus, and in particular to a catalytic flameless combustion apparatus with extremely low pollutant emission. The apparatus comprises a fuel inlet, a combustion-supporting gas inlet, a gas premixer, a combustion plate, an igniter, a gas deflector, a flameless combustion cavity, a catalyst filled in the flameless combustion cavity, a gas collection chamber and an exhaust port. The present invention describes a method for starting the catalytic flameless combustion apparatus with extremely low pollutant emission, comprising initially combusting and heating the flameless combustion cavity and the catalyst filled therein with low power flame; and then increasing flow velocity and switching to high power flame for conducting catalytic flameless combustion. The catalytic flameless combustion apparatus of the present invention can be used for various non-solid fuel combustion and heat extraction processes. The beneficial effects are: the fuel is completely combusted; and the emissions of hydrocarbon compound, carbon monoxide and nitrogen oxide in combusted tail gas are lower than 1 ppm. The catalytic flameless combustion apparatus has the characteristics of high efficiency, energy saving, environmental protection, safety, simple structure, good combustion stability, etc.

The invention relates to the field of industrial combustion, and particularly discloses a catalyst for industrial combustion and a preparation method and application thereof. A preparation method of a catalyst for industrial combustion comprises the following steps: S1, preparing a carrier: ultrasonically dispersing cerium salt and zirconium salt in an organic solvent to obtain a precursor solution, then performing spray pyrolysis on the precursor solution to obtain intermediate powder, and calcining to obtain the carrier; the active metal derivative and the carrier are blended, impregnated and loaded, the catalyst for industrial combustion is obtained, the active metal derivative comprises palladium salt and / or a platinum complex, the palladium loading capacity in the catalyst for industrial combustion is 0.7-0.8 wt%, and the platinum loading capacity in the catalyst for industrial combustion is 0-0.1 wt%. The product disclosed by the invention can be used for catalyzing natural gas combustion and efficiently treating various pollutants at the same time, the NOx conversion rate is increased to 95% or above, the CO oxidation efficiency reaches 99.8% or above, and the economic benefits of industrial application are remarkably increased.

Disclosed is an engine (1) for a ship, comprising an intake manifold (2), characterised in that it comprises a catalytic device (10) using the mixture of a catalyst precursor that comprises an organometallic compound, in particular a methyl cyclopentadienyl manganese tricarbonyl component, with a comburent, and in that the catalytic device (10) is arranged upstream of a compression device, such that this compression device increases the pressure of the mixture comprising the comburent and the catalyst precursor to a value greater than or equal to 2 bar, or indeed greater than or equal to 4 bar, this pressure value being measured at its entry into the intake manifold (2).

An energy generation system (1) comprises: a catalytic burner (40) for generating thermal energy; a thermally insulating container (32), wherein the thermally insulating container (32) surrounds the catalytic burner (40); and a fuel cell, wherein waste heat from the fuel cell may be provided to the catalytic burner (40) and / or the thermally insulated container (32); wherein the catalytic burner (40) comprises a catalytic coil comprising a coil-shaped fluid flow path for the flow of a fuel mixture and a catalytic surface extending along at least a portion of the coil-shaped fluid flow path.