37 results about "Methane combustion" patented technology

The invention discloses a coal seam gas enhanced mining method based on methane in-situ burning explosion fracturing. A top plate horizontal well and a bottom plate horizontal well are drilled in a top plate and a bottom plate correspondingly; the sand-carrying fluid forms high-speed and high-pressure jet flow through a perforating device and impacts a bottom plate, holes are formed in the coal seam, and meanwhile a plurality of cracks are generated in the surfaces of the holes; a plurality of fishbone wells are drilled downwards in the horizontal well section of each roof horizontal well; fracturing operation is conducted on the holes through liquid CO2; coal ash and oxygen are injected into the horizontal well section of the bottom plate horizontal well together, and a mixture is formed; detonating the mixture, and generating impact on the coal seam by utilizing instantaneous high pressure generated by burning explosion, so that the crack continues to expand; performing underground methane burning and explosion operation for multiple times, and forming a highly-fractured impact crack network near the horizontal well section; meanwhile, part of coal is mixed with oxygen to be combusted, and a coal seam loosening ring with weak bearing capacity is formed near the bottom plate; closing the well for mineralization reaction; and gas extraction operation. According to the method, the gas extraction efficiency can be remarkably improved.

The invention provides rare earth based hexaaluminate, a preparation method thereof and a methane combustion catalyst. The general formula of the rare earth based hexaaluminate is AByAl12-yO19, A is a rare earth element and / or an alkaline earth metal element, B is a transition metal element, and y is more than 0 and less than 12. By introducing the rare earth element and / or alkaline earth metal, the stability of a hexaaluminate skeleton is enhanced, and the high temperature resistance of the hexaaluminate skeleton is further improved; and meanwhile, the transition metal is used for partially replacing Al < 3 + >, so that the catalyst has better high-temperature catalytic activity when being applied to catalytic methane combustion, and the methane catalytic combustion reaction temperature can be obviously reduced.

This invention discloses a platinum-based catalyst, its preparation method, and its application in the catalytic combustion of methane. The preparation method includes reacting a catalyst supported on reduced platinum in a mixed atmosphere of methane / nitrous oxide or methane / nitrous oxide / inert gas at the lowest temperature required for the complete catalytic combustion of methane by nitrous oxide, yielding a catalyst supported on low-oxidation-state platinum. This invention achieves a breakthrough reduction in the temperature for complete methane conversion to below 200°C and maintains long-term stability. This invention enables the simultaneous degradation of two greenhouse gases, methane and nitrous oxide, which is beneficial for mitigating the greenhouse effect. The catalyst of this invention has a simple manufacturing process, excellent performance, and long lifespan, and can be widely used in equipment such as flue gas treatment, natural gas vehicle exhaust treatment, and air purifiers.

The present application provides a kind of shale gas reservoir methane combustion fracturing structure, it includes: stabilizing component, conveying component and packer component, stabilizing component is made of wellbore casing, and bottom packer and top packer are respectively fixedly installed in the inside of both ends of wellbore casing, conveying component is made of sucker rod string, and jet mechanism is fixedly installed in the inside of sucker rod string, packer component is fixedly installed to the inner wall of wellbore casing, and guide column is arranged in the inside of packer component.This application realizes the conveying of fuel and combustion improver in the inside of wellbore casing by using sucker rod string, and realizes the filling of fuel by using conveying component in sucker rod string, realizes the conveying of high-pressure gas by the cooperation of sand blasting pipe and air inlet pipe, realizes the storage of solid fuel by the cooperation of fracture, realizes the sequential conveying of fuel and combustion improver by packer component, and realizes the automatic opening of packer component by using the gas pressure generated during conveying, can realize the mixing of gas after sequential conveying in well, and can also improve the safety performance of combustion operation.

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 utility model discloses a secondary separation and purification device for membrane recovery inert gas in a natural gas-to-ammonia process, belongs to the field of secondary separation of membrane recovery inert gas, solves the problems of insufficient combustion of methane and generation of carbon monoxide during existing inert gas recovery, and comprises an inert gas preheater, an inert gas conveying pipeline, a washing system, a steam heater and a recovery system, according to the system, through the arrangement of the conveying system, the recycling system and the washing system, non-combustible nitrogen can be separated, the nitrogen is input into the nitrogen recycling system, high-purity methane is separated from the interior of inert gas, and the separated methane is directly input into the incinerator at one end to be fully combusted; the combustion efficiency of methane in the first-section burning furnace is enhanced, methane can be fully burnt, the usage amount of methane is reduced, the content of generated carbon monoxide is reduced, multiple times of separation and purification in inert gas are achieved, and the working quality of equipment is guaranteed.

The invention relates to the technical field of container generators, in particular to a container type methanol fuel generator which comprises a generator set and an engine unit and further comprises an air inlet manifold, a preheating assembly, a sealing assembly and an air cylinder assembly, the air cylinder assembly is installed in the engine unit, and the preheating assembly is connected with the upper end of the air cylinder assembly. The preheating assembly is arranged, and the upper preheating cavity is used for heating mixed gas, so that the phenomenon that the methane combustion efficiency is reduced due to the fact that cold mixed gas absorbs heat in the air cylinder assembly after entering the air cylinder assembly is avoided, and the bottom of the upper preheating cavity is arranged to be in an arc shape; therefore, large-droplet methane falls into the edge of the bottom of the upper preheating cavity and then is heated, the methane in the upper preheating cavity is heated and vaporized, the methane is combusted more easily, the combustion efficiency is further improved, and the situation that large-particle methane droplets directly enter the air cylinder body, and consequently the methane is combusted insufficiently is avoided.

A multi-energy complementary mine dehumidification and air conditioning system based on metal-organic framework materials includes a dehumidification unit and a waste heat utilization unit, wherein the dehumidification unit includes an evaporative cooler, an air cooler, a solution cooler, a metal-organic framework composite membrane dehumidifier, a heat recovery device, a dilute solution tank, a liquid-liquid heat exchanger, a metal-organic framework composite membrane regenerator, a concentrated solution tank, a solar collector, and a hot water storage tank; the waste heat utilization unit includes a lean-burn gas turbine, first and second metal-organic framework adsorption beds, a gas storage tank, a high-temperature hot water storage tank, a gas storage tank, and a generator. Based on the high porosity and low regeneration temperature characteristics of the metal-organic framework material, the present invention fully utilizes solar energy, flue gas generated by methane combustion after exhaust air purification, and electrical energy to achieve a low-temperature and low-humidity summer mine air conditioning environment in an energy-saving and efficient manner, creating a suitable temperature and humidity environment for mine production and ensuring efficient mine operation while reducing energy consumption and greenhouse gas emissions.

This invention discloses a method for methane extraction and closed-loop carbon fixation in coal seams using hot flue gas-driven combustion-explosion fracturing. First, each horizontal branch well is divided into sections, and perforations are constructed in each section. Then, CH4 is used in each section. 4 Combustion-explosive fracturing technology utilizes in-situ synergistic combustion-explosion reactions to generate gas impact perforation fractures, allowing them to further develop and expand into a fracture network. Then, hot flue gas is sequentially injected into each horizontal branch well. Due to its high temperature, the hot flue gas promotes CH4 (chemical oxygen demand) in the coal seam. 4 Gas desorption, and CO in hot flue gas 2 SO 2 NO 2 Due to its competitive adsorption advantage, it can displace a large amount of CH4 adsorbed in extra-thick coal seams. 4 Gas, then hot flue gas and CH 4 The gas continues to be utilized in a closed loop, improving the efficiency of coal seam methane extraction while simultaneously achieving hot flue gas sequestration. Through this continuous closed-loop utilization process, the efficiency of methane combustion and fracturing, hot flue gas sequestration, and CH4 extraction in various areas of extra-thick coal seams is maximized. 4 Extraction efficiency.

The application provides a kind of pyrolysis furnace low nitrogen combustion multi-objective optimization method, optimization system and storage medium.The multi-objective optimization method includes the following steps: establishing the turbulent combustion coupling model describing the flow and fuel combustion condition of the target pyrolysis furnace flue gas;Simplify the methane combustion mechanism of the turbulent combustion coupling model to obtain a simplified model describing the simplified mechanism of combustion reaction kinetics;Determine the input variables and output variables of the proxy model for predicting NOx emissions and flue heat efficiency;Obtain experimental sample points about the input variables and the output variables, and obtain the corresponding simulation results;Based on the experimental sample points and the simulation results, the proxy model is established via radial basis neural network;And the NSGA-II algorithm is used for multi-objective optimization of pyrolysis furnace low nitrogen combustion to determine the optimized input variable parameters balancing nitrogen emissions and thermal efficiency.

An apparatus and method are provided for reducing methane emissions from ruminant animals by combusting methane gas extracted from the rumen. The system comprises a conduit configured to transport methane from the animal's rumen to a combustion module mounted externally or implanted partially or fully in a subdorsal position. The combustion module includes a pressure-activated valve, air intake, ignition system, and combustion chamber enclosed by a heat-absorbing roof structure. A control unit monitors internal gas pressure and triggers a spark ignition circuit when combustion conditions are satisfied. An upward-facing camera inhibits ignition if flammable obstructions are detected above the module. A water-filled thermal buffer integrated into the chamber roof moderates exhaust temperature, reducing wildfire risk. Power is supplied by a solar panel and rechargeable battery. The system intermittently converts methane into carbon dioxide and water vapor, significantly mitigating the greenhouse gas impact of enteric fermentation in ruminant livestock.

The utility model discloses a sludge drying device for two-phase waste heat recovery by utilizing biogas power generation, belongs to the technical field of heat utilization, and aims to solve the problems of low energy utilization rate, pipeline corrosion, large carbon emission and large heat energy loss in the prior art. The utility model discloses a two-phase waste heat recovery sludge drying device utilizing biogas power generation. The two-phase waste heat recovery sludge drying device comprises a combined waste heat recovery system and a sludge drying device, the combined waste heat recovery system comprises a biogas power generation waste heat recovery device and a dried sludge waste heat recycling device; the biogas power generation waste heat recovery device comprises a gas-water heat exchanger and a gas-gas heat exchanger; the air-water heat exchanger preheats dry waste heat air recovered by the dry sludge waste heat recycling device through circulating cooling liquid for cooling the internal combustion engine to obtain preheated air; the gas-gas heat exchanger is used for heating the preheated air through waste heat of methane combustion flue gas of the internal combustion engine to obtain hot air, and the hot air enters dried sludge through an air supply outlet of the sludge drying device.

The present application relates to a kind of palladium-based methane combustion catalyst and its preparation method and application, the preparation method includes the following steps: after obtaining mixed sol by mixing titanium source, cerium source and complexing agent, evaporate, dry and sinter in sequence, obtain cerium titanium carrier;The palladium-based methane combustion catalyst is obtained by impregnating mixed cerium titanium carrier and palladium source, and then drying and calcining in sequence.The preparation method of the present application is simple, and raw materials are cheap and easy to obtain.The palladium-based methane combustion catalyst prepared has low light-off temperature, and has water resistance, which can be applied to the treatment of methane in tail gas.

The invention relates to an alkali-etched Co0. 98Pd0. 02Al2O4-delta-alkali catalyst for catalytic oxidation of methane and a preparation method thereof, and belongs to the field of catalytic chemistry and environmental chemistry. The preparation method comprises the following steps: doping palladium into cobalt aluminate crystal lattices based on a one-step synthesis sol-gel method, carrying out high-temperature roasting treatment to obtain a Co < 0.98 > Pd < 0.02 > Al < 2 > O < 4-delta > catalyst, modifying the surface of the catalyst through NaOH, selectively dissolving a part of Al ions on the surface, and carrying out high-temperature roasting again to obtain an etching modified Co < 0.98 > Pd < 0.02 > Al < 2 > O < 4-delta >-alkali catalyst, the catalyst shows excellent low-temperature catalytic activity on methane combustion and has excellent thermal stability. The method has a good application prospect in the field of air pollution control.

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.

This invention belongs to the field of methane combustion catalyst technology, specifically relating to a cobalt-aluminum composite material, its preparation method, and its application. The cobalt-aluminum composite material is a composite oxide of cobalt and aluminum, wherein the molar ratio of cobalt to aluminum is 1–11:1. This invention uses a wet grinding method with ethanol to mix and grind cobalt salt and aluminum salt precursors, followed by drying and calcination to obtain the composite material. This preparation method is green and simple. The resulting composite material exhibits high activity for the catalytic combustion of low-concentration methane (volume concentration ≤1%), particularly excellent sulfur resistance; its activity decreases slowly and can partially recover in a sulfur dioxide atmosphere, making it suitable for the catalytic purification of methane in industrial waste gas.

This invention discloses a highly stable methane combustion catalyst and its preparation method, belonging to the field of energy and environmental technology. The invention first prepares a Ti-doped CeO2 composite oxide as a support, then loads it with a non-precious metal Mn-Co based solid solution, adds urea, and grinds the mixture to obtain the catalyst. This invention is not only simple, green, and efficient, but also fully utilizes the synergistic effect between the non-precious metal Mn-Co based solid solution catalyst and the support, significantly improving low-temperature catalytic activity, selectivity, and high heat and poisoning resistance. Furthermore, the catalyst can be recovered and reused, which is beneficial for resource recycling and cost reduction. The catalyst prepared by this invention has advantages such as convenient operation and high conversion rate in low-concentration methane combustion reactions.

A kind of methane in-situ combustion fracturing system and method based on shock wave ignition, system: shock tube assembly includes pressure-bearing pipe body;Clamp one and two are clamped in diaphragm one and two inside pressure-bearing pipe body;Gas filling assembly includes high-pressure gas tank, high-pressure and double-membrane gas supply pipeline connected with high-pressure gas tank respectively communicate high-pressure and double-membrane chamber;Exhaust assembly includes vacuum pump, vacuum pump connected with the vacuum pumping pipeline is communicated with high-pressure and double-membrane chamber through communication pipeline one and two respectively, double-membrane exhaust pipeline is communicated with communication pipeline two;Methane combustion and explosion packer unit is the packer of being installed on pressure-bearing pipe body;Combustion-supporting agent delivery unit includes oxygen cylinder, oxygen delivery pipeline connected with oxygen cylinder communicates combustion chamber;Combustible gas concentration detector is located on oxygen delivery pipeline;Method: shock tube assembly is assembled and is lowered;High-pressure and double-membrane chamber is vacuumized;Gas is filled;Fast pressure relief;The shock wave generated is ignited and expanded into combustion and explosion.The ignition energy of the present application is high, and the combustion and explosion effect is ideal.

The application discloses a carrier-supported platinum-palladium bimetallic atom methane combustion catalyst and a preparation method and application thereof. The preparation method comprises the following steps: (1) placing a carrier in a palladium source solution, uniformly mixing, and then aging to make palladium species uniformly dispersed on the carrier, and then performing solid-liquid separation to obtain a solid, and then washing, drying, and calcining the solid to obtain a first intermediate product; (2) placing the first intermediate product in an imidazole organic ligand solution, stirring and heating to make a coordination reaction of palladium metal sites and the imidazole organic ligand occur, and then performing solid-liquid separation to obtain a solid, and then washing and drying the solid to obtain a second intermediate product; and (3) placing the second intermediate product in a platinum source solution, stirring and heating to make a coordination reaction of platinum species and the imidazole organic ligand coordinated on the palladium metal sites occur, and then performing solid-liquid separation to obtain a solid, and then washing, drying, and calcining the solid to obtain the carrier-supported platinum-palladium bimetallic atom methane combustion catalyst.

The present invention relates to a methane combustion catalyst including platinum and iridium supported on a tin oxide carrier for combusting methane in a combustion exhaust gas containing sulfur oxide. In the methane combustion catalyst, a ratio RTO of platinum oxides to metal platinum is 8.00 or more, wherein the ratio RTO is based on existence percentages of the metal platinum (Pt) and the platinum oxides (PtO and PtO2) obtained from a platinum 4f spectrum analyzed and measured by X-ray photoelectron spectroscopy (XPS) and calculated in accordance with the following expression. In the following expression, RPt is an existence percentage of the metal platinum (Pt), RPto is an existence percentage of PtO, and RPto2 is an existence percentage of PtO2.RTO=(RPtO+RPtO2) / RPt  [Expression 1]

The present application relates to container generator technical field, specifically to a kind of container methanol fuel generator, including generator set and engine group, also include air intake manifold, preheating assembly, sealing assembly and cylinder assembly, the cylinder assembly is installed in engine group inside, the preheating assembly is connected with the upper end of cylinder assembly.This application is equipped with preheating assembly, uses the heating of mixed gas by upper preheating cavity, to avoid the phenomenon that cold mixed gas is absorbed into the heat inside cylinder assembly after entering the inside of cylinder assembly, leading to the phenomenon that methane combustion efficiency reduces, and the bottom of upper preheating cavity is arc-shaped, so that the large droplet of methane is heated after falling into the edge of the bottom of upper preheating cavity, the methane inside upper preheating cavity is vaporized by heating, so that methane is more easily combusted, further improve combustion efficiency, to avoid large particle methane droplet directly into the inside of cylinder body, and lead to methane combustion is not sufficient.

The present invention relates to a Pt / SnO2-based methane combustion catalyst for combusting methane in a combustion exhaust gas containing sulfur oxides, the methane combustion catalyst being configured such that platinum and / or platinum oxide is supported on a tin oxide-based carrier containing tin oxide as an essential component. In the methane combustion catalyst according to the present invention, the tin oxide-based carrier comprises antimony-doped tin oxide (ATO). At this time, the doping amount of antimony in the tin oxide-based carrier is preferably 0.1-5.0 mass%. In the present invention, the antimony doped in tin oxide improves the ability of the tin oxide to supply oxygen to platinum and the like. As a result, the activity and durability of the methane combustion catalyst can be improved. The Pt / SnO2-based methane combustion catalyst is highly active and excellent in durability even without the additional carrying of iridium or without the application of an overcoat layer.

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 present invention relates to the use of a PdCeO-based catalyst prepared by a co-precipitation method in methane combustion. The catalyst is based on the rare earth oxide CeO2 and combines Pd with another transition metal element. A Pd-Ce-O-containing composite oxide catalyst is prepared by a co-precipitation method. Based on the total weight of the catalyst, the mass percentage of Pd is 0.1-5%, and the content of other metal elements is 0.5-10%. This Pd-Ce-O-containing composite oxide catalyst has the characteristics of high catalytic methane combustion activity and simple preparation. It has excellent catalytic reaction performance in methane combustion reactions under conditions close to industrial conditions.

This invention discloses an M1Co3Ni6O for low-temperature catalytic combustion of methane. x A method for preparing a composite metal oxide catalyst, wherein the catalytic combustion reaction of methane is carried out at a temperature range of 250–500 °C under normal pressure. The preparation method includes the following steps: Step 1, synthesis of a mixed metal ion solution L1; Step 2, preparation of an alkaline ammonium carbonate solution L2; Step 3, titration of solutions L1 and L2; Step 4, M1Co3Ni6O x Synthesis of composite metal oxides. The catalyst prepared by this invention exhibits superior methane combustion catalytic activity, structural stability, and strong resistance to sintering. The M1Co3Ni6O prepared by this invention... x Composite metal oxide materials are used as catalysts for the low-temperature catalytic combustion of methane to further improve the methane conversion rate and the selectivity of CO2 products.

The utility model discloses a recovery type methane combustion torch, which relates to the technical field of combustion torches and comprises a bottom plate, a combustion torch body is fixedly mounted at the upper end of the outer wall of the bottom plate, a connecting ring is fixedly mounted on the side wall of the combustion torch body, and a plurality of sliding rods are slidably connected onto the connecting ring in a circumferential arrangement manner. The upper ends of the outer walls of all the sliding rods are fixedly provided with protective covers at the same time, the top of the combustion torch body is fixedly connected with an annular connecting block, and the inner wall of the annular connecting block is fixedly provided with an annular water storage frame. According to the device, the protective cover can be lowered when biogas is not combusted, the top of the combustion torch body is sealed, dust and other impurities in air are prevented from falling into the combustion torch body, the interior of the combustion torch body is protected, and the service life of the device is prolonged.

This invention discloses a production system for preparing carbon nanotubes using a mixed carbon source, relating to the field of nanomaterial preparation technology. The system includes a carbon dioxide capture unit and a carbon nanotube preparation unit. The carbon dioxide outlet pipe of the carbon dioxide capture unit is connected to the carbon source inlet pipe of the carbon nanotube preparation unit. A methane combustion chamber is connected to the front end of the carbon dioxide capture unit, which is connected to a compressor and a gas turbine. The carbon-containing flue gas produced after burning methane in the methane combustion chamber enters the carbon dioxide capture unit. The heat generated during combustion is used to heat the carbon dioxide capture unit, and the gas turbine powers the heating structure in the carbon nanotube preparation unit. This system utilizes the heat energy generated from methane combustion in the methane combustion chamber to heat the carbon dioxide capture unit and power the heating structure of the carbon nanotube preparation unit via the gas turbine, achieving full energy utilization and reducing energy consumption.

The present application belongs to the technical field of coal mining monitoring analysis and control, and specifically discloses a remote visual coal mining monitoring analysis and control system, which comprises a cutting area monitoring module, a cutting track generating module, an obstacle avoidance track generating module, a database and a cutting correction executing module. The present application constructs a three-dimensional geological model by fusing multi-source geological data such as methane concentration distribution, fissure density and rock hardness, realizes accurate identification of methane accumulation area, fissure expansion risk and hard rock mutation, predicts methane diffusion path in combination with wind speed and direction data, significantly reduces the incidence of methane combustion and explosion accidents, reduces the safety warning response time, simultaneously corrects the obstacle avoidance of the spatial boundary of the methane accumulation area by monitoring the methane concentration distribution data of the cutting track prediction path of the roadheader during operation in real time, and generates an obstacle avoidance cutting track, accurately defines the three-dimensional spatial range of the methane accumulation area, and avoids the risk of the cutting head of the roadheader entering the risk area.

The application discloses a method for hot flue gas displacement and closed-loop carbon sequestration of superimposed coal seam methane extraction, which adopts CH4 combustion and explosion fracturing technology to generate gas impact fracturing coal seam section to form a crack network in situ in each coal seam section, then hot flue gas is injected into each coal seam section, the high temperature of the hot flue gas can promote the desorption of CH4 gas in the coal body, and CO2, SO2 and NO2 in the hot flue gas can replace a large amount of CH4 gas adsorbed in the superimposed coal seam due to the competitive adsorption advantage and closed-loop utilization, thereby realizing the hot flue gas storage and improving the coal seam methane extraction efficiency. In addition, the multi-source monitoring data inversion and intelligent control system can design the best combustion and explosion gas injection parameters and the best hot flue gas injection parameters according to the changes of the physical parameters of the current different coal seam sections, thereby performing layered dynamic and accurate regulation and control on the gas injection parameters of each coal seam section, and maximizing the methane combustion and explosion fracturing, hot flue gas storage and CH4 extraction efficiency of each coal seam section of the superimposed coal seam.

The invention provides a water-resistant methane combustion catalyst and a preparation method and application thereof.The water-resistant methane combustion catalyst comprises active components and a carrier, the active components comprise Pd and Pt, the carrier comprises inorganic matter modified by metal elements and / or non-metal elements, the metal elements comprise Ti and / or rare earth elements, and the inorganic matter modified by metal elements and / or non-metal elements comprises inorganic matter modified by metal elements and / or non-metal elements. The non-metallic element comprises Si; the inorganic matter comprises aluminum oxide and / or boehmite. According to the water-resistant methane combustion catalyst disclosed by the invention, Pd and Pt are used as active components, and metal and / or nonmetal modified aluminum oxide is used as a carrier, so that the methane combustion catalyst has excellent water resistance, long service life, stability and low-temperature performance, and the water-resistant methane combustion catalyst can be industrially produced and applied on a large scale.