65results about "Combustion using catalytic material" patented technology

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.

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 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 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 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 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 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).

To provide an electrolytic gas recombination device that can prevent overheating of the catalyst due to the combustion of the electrolytic gas. [Solution] An electrolytic gas recombining apparatus that recombines two types of electrolytic gases generated by electrolysis by contacting them with a combustion catalyst, An electrolytic gas recombination apparatus comprising: a heat dissipation means for discharging the heat of combustion generated by the combustion catalyst to the outside; a heat conductive member provided in contact with the heat dissipation means; and a combustion catalyst layer provided in contact with the heat conductive member.

The invention discloses a flame-retardant coal stable combustion catalyst as well as a preparation method and application thereof, and relates to the technical field of industrial combustion catalysts. The preparation method comprises the following steps: a, crushing, washing and drying the rare earth tailings rich in cerium oxide, and then mechanically grinding to obtain raw material powder; b, dropwise adding an aqueous solution containing Zr < 4 + > or La < 3 + > ions into the raw material powder obtained in the step a, stirring to infiltrate the powder material, standing, and drying; and c, roasting the powder dried in the step b, and grinding to obtain the flame-retardant coal stable combustion catalyst. The flame-retardant coal stable combustion catalyst prepared by the invention has the characteristics of high activity and high stability, can be suitable for flame-retardant solid fuel, solves the problems of high cost and narrow applicability of the existing catalyst, realizes effective utilization of the rare earth tailings, and avoids resource waste.

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).

The present invention relates to a tank arrangement (10) comprising a tank (1) for liquid hydrogen, a boil-off management system (2) including a catalyst (3), and a heater arranged on the hydrogen side after a first pressure relief valve (5) and thermally connected to the catalyst (3), wherein the first pressure relief valve (5) is configured to open when a predetermined first pressure is exceeded, the heater being configured as a passive metal hydride heater (4) including a metal hydride, and a second pressure relief valve (6) is arranged between the first pressure relief valve (5) and the catalyst (3), the second pressure relief valve (6) being configured to open when a predetermined second pressure higher than the first pressure is exceeded.

To quickly create a great amount of combustion gas by using a combustor.SOLUTION: A combustor 40 has: a circular tubular box body 41 which is open at a first end, and closed at a second end 41b, and through which there flow an ammonia gas mixed with air, and a combustion gas generated by combustion of the ammonia gas; an introduction part for introducing the ammonia gas and the air into the box body 41 so that a tubular flow F1 is generated; an ignition plug 44 arranged at the second end 41b side in the box body 41, and having a positive electrode 45 and a negative electrode 46; and an ignition unit for generating a spark P1 between the positive electrode 45 and the negative electrode 46. A negative pressure region A1 is formed in one portion in the box body 41. The positive electrode 45 and the negative electrode 46 are arranged respectively at positions which make a distance L1 between the positive electrode 45 and the negative electrode 46 shorter than a distance L2 between the positive electrode 45 and an internal peripheral face 41d of the box body 41 so that a flame P2 generated between the positive electrode 45 and the negative electrode 46 by the spark P1 is formed only within the negative pressure region A1.SELECTED DRAWING: Figure 5

System, comprehensive: a catalytic reactor (14) configured to be mounted on a combustion chamber (30), the catalytic reactor (14) comprising: a catalyst (56) designed to reduce emissions associated with combustion in the combustion chamber (30); a first sacrificial layer (58) which was arranged above the catalyst (56) in the combustion chamber (30) prior to the installation of the catalytic reactor (14); and a second sacrificial layer (70) which was arranged above the first sacrificial layer (58) prior to the assembly of the catalytic reactor (14) on the combustion chamber (30), wherein the first and the second sacrificial layer (58, 70) differ from each other, wherein the second sacrificial layer (70) has a higher temperature resistance than the first sacrificial layer (58); wherein the first and second sacrificial layers (58, 70) are removable, while the catalytic reactor (14) is mounted on the combustion chamber (30) without damaging the catalyst (56).

A flare stack 10 is provided with: a main burner 11 to which ammonia is supplied; a pilot burner 12 to which ammonia is supplied; a first catalyst 13, which is disposed, in the flow of ammonia, upstream of the pilot burner 12 and decomposes the ammonia supplied to the pilot burner 12 to produce reformed fuel containing hydrogen; and a heater 14 for heating the first catalyst 13.

A method for combusting a mixed fuel according to one disclosure comprises: a fuel producing step for producing an ammonia-hydrogen mixed fuel in which an excess amount of hydrogen is mixed compared to ammonia on the basis of volume; and a combustion step for supplying the mixed fuel and oxygen to a combustion catalyst, in which an active material containing palladium is supported on a metal oxide support containing alumina, and combusting the mixed fuel.

The present invention relates to a method and device for generating heat. In the method for generating heat, a mixture (3) is prepared containing a gaseous fuel (1) and a gaseous oxidizer (2). The fuel (1) is oxidized. The mixture (3) is outside the explosion range, more precisely, the oxygen content of the mixture is below the critical oxygen concentration. In this way, a particularly safe and technically uncomplicated method is provided.

The present invention relates to a process for obtaining metal supported catalysts, as well as the metal supported catalysts themselves, for methane combustion under wet conditions. The invention also relates to the use of said metal supported catalyst in methane combustion, preferably in methane combustion under wet conditions. Furthermore, the invention relates to a process for the combustion of methane under wet conditions, which involves the use of the metal supported catalyst according to the invention.

The invention discloses a catalyst for methane ultrahigh-temperature catalytic combustion as well as a preparation method and application of the catalyst. The catalyst is a composite oxide comprising a cobalt element, an iron element, a cerium element, an aluminum element, a lanthanum element and a magnesium element, wherein based on the total mass of the catalyst, the mass percentage of each element is as follows: 10-20% of cobalt, 15-20% of iron, 10-18% of cerium, 5-15% of aluminum, 6-12% of lanthanum and 1.0-3.0% of magnesium, and the mass ratio of the lanthanum element to the magnesium element is (4-8): 1; the catalyst is prepared by the following steps: carrying out parallel flow co-precipitation reaction on a mixed salt solution containing a cobalt salt, an iron salt, a cerium salt, a lanthanum salt, a magnesium salt and an aluminum salt and a precipitant solution, and then aging, drying and roasting. The catalyst is a full non-noble metal Co-Fe-Ce-Al-La-Mg six-membered composite oxide, a stable skeleton structure is formed through the La-Mg synergistic effect, the efficient effect of a Co-Fe-Ce core catalytic unit is combined, and the catalyst has excellent low-temperature light-off activity and 1300 DEG C ultrahigh-temperature long-acting stability.

This invention discloses a low-NOx submerged combustion device and method for ammonia. The submerged combustion device includes a heating pool, an ammonia burner, a flue, and a heat exchange tube bundle; the heating pool is filled with liquid, and the flue and heat exchange tube bundle are submerged below the liquid surface; the combustion device also includes an ammonia regeneration tank, the lower part of which is located below the liquid surface in the heating pool, and the upper end extending beyond the top of the heating pool; the ammonia regeneration tank has two spray facilities on its side wall, the upper spray facility I is used to introduce and spray liquid above the liquid inlet into the ammonia regeneration tank, and the lower spray facility II is connected to the outlet of the aeration mixture pump; the ammonia burner is used for combustion under oxygen-deficient conditions. The low-NOx submerged combustion device of this invention can achieve efficient low-NOx combustion and simplifies the denitrification equipment required in traditional combustion systems.

A method for producing a catalytically active product (10) is disclosed. The method includes depositing a thermite or thermate composition (28) on a substrate, heating the substrate (11) with the composition (28) to initiate a thermite reaction and adhere a layer of a first metal (27) to the substrate, removing oxides of a second metal (29), and forming a roughened surface of the layer of first metal. A ceramic material is then deposited on the roughened surface of the first metal (27) to form a ceramic layer (14) comprising catalytically active material (16) thereon. The catalytically active product (10) and a reactor (22) comprising a plurality of laminated sheets of the catalytically active product (10) are also disclosed.

The utility model relates to the technical field of industrial heating equipment, and discloses a catalytic furnace quick-release burner which comprises a fixing frame, a mounting groove is formed in the front end of the middle of the fixing frame, and a connecting assembly is arranged in the middle of the mounting groove. The connecting assembly comprises two injection pipes, the two injection pipes are both arranged in the middle of the mounting groove, and threaded rings are arranged on the outer sides of the ends, away from the mounting groove, of the two injection pipes. According to the utility model, the threaded ring is arranged on the outer side of the connecting end of the injection pipe and the external material conveying pipe, so that the injection pipe can be connected with the external material conveying pipe by rotating and adjusting the position of the connecting sleeve, and a plurality of uniformly distributed bolt holes are formed in the fixed frame; the fixing frame provided with the combustion base can be fixed to the base by penetrating fixing bolts through the bolt holes, so that the furnace end can be assembled and fixed through cooperation of the bolts and the connecting sleeves, and meanwhile later disassembly and maintenance are facilitated.

The invention discloses a heating and humidifying system and method based on low-concentration hydrogen catalytic combustion, and the system comprises a fresh air system which is used for extracting outdoor fresh air and discharging indoor gas; the gas mixing module is used for mixing hydrogen and air; the catalytic combustion module is used for performing catalytic combustion on the mixed gas; the combustion product cooling module is used for mixing products obtained after combustion with fresh air in the fresh air system and then cooling exhausted air; the hydrogen supply module is used for stably supplying hydrogen with set flow to the gas mixing module; and the waste heat utilization module is used for exchanging heat between indoor exhaust and outdoor fresh air. According to the method, fresh air entering a room through a fresh air system exchanges heat with exhausted air in a waste heat utilization module, low-concentration hydrogen and the fresh air from the fresh air system are fully mixed and then are subjected to catalytic combustion in a catalytic combustion module, and high-temperature gas obtained after combustion and outdoor cold air are mixed to a set temperature and then are directly introduced into the room; meanwhile, heating and humidification in the room are achieved.

A heating tube for supporting the combustion of a fuel and an oxidant includes a tubular wall for containing a gas flow through the heating tube and a catalyst, contained by the tubular wall, for catalysing a combustion reaction of a gaseous fuel and a gaseous oxidant.