14 results about "Methane air" patented technology

The invention discloses an explosion load simulation test device, system and method, and belongs to the technical field of explosion tests. The device comprises a driving section and a driven section, the driving section comprises a test pipeline which is used for guiding and accommodating methane-air mixed gas and deflagration products, a plurality of through holes which can be sealed by bolts are formed in the test pipeline, an obstacle partition plate and a polyethylene film are arranged in the test pipeline, and the polyethylene film is used for forming an inflation section; the driven section comprises an expansion section, a straight section and a structural section which are connected in sequence, the first end of the expansion section is connected with the test pipeline and used for diffusing shock waves generated by detonation, and the two ends of the straight section are connected with the second end of the expansion section and the structural section respectively and used for completing shaping of the blast load and improving the uniformity of blast load distribution on the structural section; and the structural section is used for bearing explosion load driven by detonation of methane and air mixed gas. According to the invention, the methane-air mixed gas is used as an explosion source, so that the test safety is improved, and the test cost is reduced.

The invention discloses a deep coal hydraulic breaking physical fluidization mining method. A vertical main shaft and an opposite horizontal well are arranged; the high-pressure water pump is connected with the sand tank and the water tank, the console and the high-pressure water pump are connected, the console and the ultrahigh-pressure water injector are connected, and the ultrahigh-pressure water injector is connected with the oscillating abrasive water jet drilling and slotting integrated tool to form drilling and slotting operation equipment; drilling an opposite fishbone well network; the oscillating jet flow spray head is combined with the slotting unit to perform slotting and cave forming operation; coal around the fishbone well is continuously mined in a fluidized form; fracture expansion is induced, and a high-quality complex fracture network is formed in the target coal seam; the extraction operation of desorption gas of the coal seam is completed by utilizing the mutually communicated complex fracture networks; injecting an oxidizing agent, igniting or detonating a methane-air mixture in the complex fracture network through electric shock ignition, and converting the coal into combustible gases such as hydrogen, methane and carbon monoxide in situ. By means of the method, fluidization mining operation of deep coal can be efficiently achieved.

The invention provides a method for efficiently converting low-quality methane gas into methanol by using a plasma catalysis technology, which specifically comprises the following steps: introducing a mixed gas of methane, air and water vapor into a plasma reactor, and generating a liquid product under the action of plasma. By simulating six low-quality coal bed gas systems with different concentrations of 0.5%, 2%, 4%, 6%, 18% and 30% and introducing water vapor into reaction gas, carbon deposition reaction and generation of nitric acid byproducts are remarkably inhibited. Meanwhile, by optimizing key reaction parameters such as discharge power and water inflow, high-selectivity synthesis of a methanol product is realized, and the selectivity of the methanol product can reach 40.9% or above in a full experimental range. Experimental results show that the method has the technical advantages of mild reaction conditions, high product selectivity, remarkable side reaction inhibition and the like.

This utility model discloses a safety performance testing chamber for mining electromechanical equipment, including a chamber body, an explosion-proof door, an observation window, a top sealing mechanism, an intermediate sealing partition, a foundation, and pipeline interfaces. The chamber body is a rectangular steel structure, using a composite design of steel plates and grid-shaped reinforcing ribs, and is made of carbon steel and stainless steel composite materials, making it vibration-resistant and explosion-proof. The intermediate sealing partition is removable, dividing the chamber body into two small compartments or forming a complete large chamber, flexibly adapting to the testing of small or large diesel engines. The top sealing mechanism uses a U-shaped groove and a venting membrane seal, allowing for rapid pressure relief in the event of an explosion. The side walls are equipped with a rotating explosion-proof door and a high-temperature tempered glass observation window for easy entry, exit, and observation. The foundation is fixed with anchor bolts, and the interior and exterior of the chamber are coated with antistatic, flame-retardant, and rust-proof paint. This utility model can withstand the impact of a methane-air or methane-hydrogen-air mixture explosion, ensuring safety; it is suitable for verifying the safety performance of diesel engines in underground coal mines, and has the advantages of high efficiency, safety, and economy.

The coal bed gasification auxiliary fracturing method comprises the steps that drilling parameters are designed; selecting a well spacing interval, and constructing a main shaft and a horizontal well; a gasification operation tool is put into the horizontal well through the gasification pipe column; injecting a combustion improver and water vapor into the horizontal well, igniting or detonating a methane-air mixture in the complex crack in the target coal seam, and realizing gasification transformation operation of the coal seam; carbon dioxide is used for displacing gasification products to form a CO and H2 enrichment area at the end, close to the well, of the coal seam; potassium permanganate particles are pressed into pores of the CO and H2 enrichment area of the coal seam to form an ignition zone; the internal space of the coal seam is ignited through microwave ignition; potassium permanganate particles are thermally decomposed to continuously supply oxygen as a newly added combustion improver; and the operations of gasification transformation, product displacement and ignition blast are alternately carried out. The method is low in implementation cost and simple in implementation process, the continuous burning and explosion effect of the internal space of the coal seam can be effectively improved, gasification anti-reflection and large-range burning and explosion fracturing yield increasing transformation of the coal seam can be achieved, and the yield and mining benefits of the coal seam gas can be greatly improved.

The present application relates to lithium battery safety test and thermal runaway protection technical field, disclose a kind of lithium battery thermal runaway jet fire simulation device, wherein high-temperature gas generation module includes burner, igniter, powder supply pipe, gas electric heater, powder generator, primary methane, air and carbon dioxide gas path, for producing temperature controllable high-temperature gas flow;Jet fire injection module includes mixing chamber, jet nozzle, hydrogen and secondary methane gas path, for simulating the injection gas component and injection state of lithium battery thermal runaway;State detection module is used to monitor the temperature and pressure change inside the device.The present application can simulate the characteristics of lithium battery thermal runaway jet fire under different types and charge states, can produce stable jet flame, and control the burning time and flow rate of flame, can provide experimental technical support for the evaluation of fire-retardant material on the fire-retardant performance of lithium battery thermal runaway jet fire.

The utility model belongs to the technical field of methane catalytic cracking hydrogen production, and particularly relates to a reactor for methane catalytic cracking hydrogen production. The upper end of a reaction tube of the reactor is provided with a produced gas outlet, and the lower end of the reaction tube is provided with a methane inlet; the catalyst feeding hole and the catalyst outlet are respectively formed in the upper part and the lower part of the reaction tube; and a plurality of ultrasonic crusher amplitude-change poles are also arranged at the lower part of the reaction tube and are used for crushing solid carbon coated on the surface of the catalyst. The methane catalytic cracking hydrogen production reactor disclosed by the utility model can work in real time in the reaction process, a carbon layer which is deactivated and descends to the surface of a catalyst at the lower part of the reaction tube can be continuously removed, shutdown operation is not needed, the maintenance period is shortened, and the continuity and the economic benefit of industrial production are improved.

The invention relates to a system and a method for synthesizing blue ammonia from associated gas of a floating oil and gas field and air. Compared with the prior art, associated gas is treated through the raw material module to obtain methane-rich gas; the methane-rich gas is treated through a reforming module to obtain synthesis gas; wherein a methane catalytic reforming reaction is carried out through the steam reforming reactor, and a methane air partial oxidation reaction is carried out through the partial oxidation reactor; the synthesis liquefaction module is used for synthesizing blue ammonia through synthesis gas, methane generating carbon emission is converted into green energy ammonia, air is directly used as raw material gas, a special nitrogen generation module does not need to be independently arranged, the problem that a large amount of high-purity nitrogen is prepared on the sea is solved, the occupied area of equipment is reduced, and the stability under the working condition of shaking on the sea is improved; the requirements for compact arrangement and gravity center control of the floating platform are easily met, the method is suitable for large-scale production, and clean conversion and utilization of offshore oilfield associated gas are achieved.

The utility model discloses monitoring equipment for a walking-beam-free coalbed methane air exhauster, which comprises a control seat, an outer support cylinder, an inner support and a positioning insertion rod, the two sides of the control seat are provided with assembly parts through fasteners, and the outer support cylinder is hinged in the side part of each assembly part. Through the arrangement of the outer supporting cylinders hinged to the two sides of the control base and the foot supports hinged to the inner support, self-adaptive stable placement can be achieved according to the road condition of a placement site, the whole device can be stably supported at a designated position, stability is provided for embedding a sensing cable under the ground for real-time detection, and the detection efficiency is improved. Local assembly and carrying are facilitated through cooperation of a fastener and an assembly part, the insertion state of a positioning insertion rod and a clamping groove can be adjusted and controlled through arrangement and cooperative use of a lifting rod, a reset spring, a limiting block, the clamping groove, the positioning insertion rod and a positioning hole, and the inner support is controlled to stretch out and draw back so that the use length can be conveniently adjusted; and the adjustability of the stable supporting structure is improved.

The invention discloses a lateral thermal jet flow interference simulation method based on methane / air fuel gas. The method comprises the steps that the jet flow and incoming flow momentum ratio, the RT ratio and the jet flow specific heat ratio are obtained according to the real incoming flow condition and the real gas engine jet flow condition; according to the ground incoming flow condition, simulating the momentum ratio and the RT ratio, and determining the momentum and RT parameters of the methane gas jet flow under the condition of geometric similarity; the methane / air mixing ratio is determined according to the RT and specific heat ratio parameters of the methane gas jet flow, and the required gas total pressure and the methane and air flow are determined according to the momentum of the methane gas jet flow; a ground wind tunnel test or a numerical simulation method is adopted to obtain a force interference factor and an orbit control offset of jet flow interference. The method can be used for a ground thermal spraying interference wind tunnel test or numerical simulation.

The invention relates to a patrol bomb ejection device based on methane, air and fuel gas and capable of repeatedly utilizing a high-pressure chamber and a low-pressure chamber. Comprising a launch canister outer canister, a spiral guide rod, a launch canister base, a launch canister support, a launch canister end cover and a high-pressure chamber. The launch canister end cover comprises an inner connecting ring and an outer connecting ring which are provided with partial protruding threads, the launch canister end cover is connected with the high-pressure chamber through the inner connecting ring and connected with the launch canister outer barrel through the outer connecting ring, the outer end face of the launch canister end cover is connected with the launch canister base through a spiral guide rod, and the inner side wall of the launch canister outer barrel is provided with a protrusion for limiting a bullet support. The high-pressure chamber is filled with methane-air fuel gas, a throat part is arranged on the side, facing the sabot, of the high-pressure chamber, a replaceable gas film assembly is arranged at the end of the high-pressure chamber, and a low-pressure chamber is formed among the high-pressure chamber, the outer barrel of the launching barrel and the sabot. The device is wide in application range and high in safety coefficient; the high-voltage chamber can be reused; the launching efficiency in the launching process is improved; the patrol bomb can pop out of the launch canister at a higher speed.

The application discloses a side heat jet flow interference simulation method based on methane / air gas, and the method comprises the following steps: obtaining the jet flow and the flow momentum ratio, the RT ratio and the jet flow specific heat ratio according to the real flow conditions and the real gas engine jet flow conditions; simulating the momentum ratio and the RT ratio according to the ground flow conditions, and determining the momentum and the RT parameters of the methane gas jet flow under the condition of meeting the geometric similarity; determining the methane / air mixing ratio according to the RT and the specific heat ratio parameters of the methane gas jet flow, and determining the total pressure of the required gas and the methane and air flow according to the momentum of the methane gas jet flow; and obtaining the force interference factor and the orbit control offset of the jet flow interference by using the ground wind tunnel test or the numerical simulation method. The application can be used for the ground heat jet flow interference wind tunnel test or the numerical simulation.

The present application relates to the technical field of mine ventilation air methane utilization, and particularly relates to a mine ventilation air methane comprehensive treatment system and method based on coal-electricity integration, which realizes effective recovery and utilization of mine ventilation air methane waste heat by setting a ventilation air methane air heat exchanger to exchange heat between mine ventilation air methane and cold air in a plant area in winter, and conveying the heated air to a plant area living area ventilation or heating system. The technical scheme of the present application is that mine ventilation air methane is treated by heat exchange and condensation and then enters a boiler system for methane oxidation; water vapor in the ventilation air methane is condensed and collected by heat exchange and cooling, so as to reduce the water content of the ventilation air methane, and then the treated ventilation air methane is sent to a power station boiler secondary air system, so that trace methane in the ventilation air methane is oxidized into carbon dioxide under high-temperature conditions in the boiler furnace, so as to reduce the greenhouse effect of the mine ventilation air methane and improve the boiler combustion efficiency. The present application solves the problems of resource utilization and greenhouse gas emission reduction of mine ventilation air methane in the prior art.

The application provides a kind of gas environment pipeline dust distribution and spray dust removal effect testing device, comprising: transparent container, inside being equipped with helical flow channel, the end of the helical flow channel is equipped with opening;Methane gas path, in communication with the flow channel, for supplying methane;Air gas path, in communication with the flow channel, for supplying air;Coal dust supply unit, in communication with the flow channel, for injecting coal dust;Atomized droplet supply unit, in communication with the flow channel, for spraying atomized droplets to coal dust;Concentration sensor, is equipped at the opening, for monitoring the concentration of undeposited coal dust;Gas extraction unit, connected to the opening, for pumping gas, atomized droplets and coal dust in the flow channel, drive it to move to the opening, and the settled coal dust is attached to the flow channel wall.The application provides a comprehensive experimental platform with high precision and strong reliability under the premise of fully guaranteeing the safety of the experiment, which provides a comprehensive experimental platform with high precision and strong reliability for the in-depth study of the complex interaction and settling rule between coal dust and liquid droplets.