485 results about "Combustion products" patented technology

The invention discloses an ammonia-coal co-combustion burner which comprises a plasma pulverized coal pre-combustion level module, an ammonia two-level combustion module, a pulverized coal main combustion level module and an air classification secondary air module. Plasma is generated by discharging between electrodes in the plasma pulverized coal pre-combustion stage module, pulverized coal carried by primary air is combusted through a plasma fire core area to generate first pulverized coal flame, and the first pulverized coal flame ignites ammonia fuel on the upper stream of the ammonia two-stage combustion module to generate stable ammonia-rich flame. Combustion products and unburnt reactants are mixed with downstream air in the ammonia two-stage combustion module to generate lean-ammonia flame for heating pulverized coal in the pulverized coal main combustion stage module to generate second pulverized coal flame, and the pulverized coal and ammonia gas are promoted to be fully combusted in the air classification secondary air module through secondary air, so that stable combustion of ammonia-coal mixed fuel is realized; the problems that ammonia coal combustion is unstable, NOx emission is too high and ammonia escapes are effectively solved.

The invention discloses a biomass pyrolysis coupling magnesite calcination synergetic poly-generation method and system. The method mainly comprises the following steps: pyrolyzing a biomass raw material in a biomass pyrolyzing furnace to generate biomass charcoal and biomass gas; biomass gas is fed into the combustion chamber to be combusted, one part of combustion products are fed into the biomass pyrolyzing furnace to supply heat, and the other part of the combustion products are fed into the heat exchanger; feeding the magnesite into a calcining furnace for high-temperature smelting to generate carbon dioxide and magnesium oxide; high-temperature carbon dioxide gas exhausted by the calcining furnace is used for drying and preheating magnesite, one part of the cooled gas is recycled, one part of the cooled gas is fed into the biomass pyrolyzing furnace to react with biomass charcoal, and the other part of the cooled gas enters the heat exchanger to be heated and then enters the calcining furnace. According to the method, light calcined magnesia and carbon dioxide capture are achieved, joint production of high-added-value multi-aperture biomass charcoal and a high-purity carbon dioxide product is generated, biomass fuel which is zero-carbon energy is used for replacing traditional fossil energy, and low-carbon even zero-carbon carbonization in the initial smelting link of magnesite is achieved.

The invention relates to a flow control method and device for a flow channel in an engine. The method comprises the steps that a control panel is arranged at an air inlet channel of an engine, and the flowing mode in a flow channel is regulated and controlled through the control panel; when the control panel is perpendicular to the incoming air flow, the air inlet channel is in a closed state so as to block high-temperature product reverse flow and back pressure forward transmission generated by combustion heat release, and it is guaranteed that a pressure wave system is subjected to regular reflection at the closed end. When the control plate rotates along the rotating shaft in a reciprocating manner, an equivalent Laval nozzle structure is formed, and a high-turbulence flow field for enhancing the reactant mixing degree is formed; when the control panel is parallel to the incoming air flow, the air inlet resistance is small, and therefore low-resistance and rapid air inlet is achieved. According to the invention, the control panel actively controls the flowing mode of the flow channel in the engine, so that low-resistance rapid air intake can be realized, the reactant mixing degree can be enhanced, and countercurrent and back pressure forward transmission of combustion products are efficiently blocked, thereby improving the thrust performance of the supercharged combustion engine.

The invention discloses a photovoltaic-driven IDC electric-cooling linkage method and device, and belongs to the technical field of IDC electric-cooling linkage, and the method comprises the following steps: S1, constructing a gravity energy storage structure; s2, the gravity object is lifted to the highest point of the gravity object channel through the gravity energy storage structure; s3, air at the bottom of the gravity object channel is compressed for the second time, and a thermal cracking reaction is carried out; s4, thermal cracking gas generated by the thermal cracking reaction is drained, and combustion products are discharged into a gas storage chamber; s5, the generated steam waste heat pushes a turbine in a turbine chamber to do work for power generation; and S6, domestic hot water and night heating hot water are prepared, convective heat exchange is conducted, the low-temperature reclaimed water obtained after heat exchange is heated into high-temperature steam in a cooler, the high-temperature steam enters a turbine to become high-temperature reclaimed water, and the high-temperature reclaimed water flows into a control center or a water storage pool. The organic matter compressed garbage is used as a gravity object for gravity energy storage, and heavy oil, solid fuel, adsorbents and other high-value products are produced in the gravity energy storage process.

The invention relates to the technical field of fireproof plates, and discloses a flame-retardant fireproof plate material and a preparation method thereof. Modified benzoxazine, an aromatic bromine modified phosphate flame retardant, polyvinyl chloride, lignocellulose and calcium carbonate are mixed, stirred, pressed, maintained and cut, and the flame-retardant fireproof plate material is obtained. Nitrogen and oxygen six-membered heterocycles in benzoxazine form a stable compound at a high temperature to prevent flame propagation; the silicon element promotes carbonization of combustion products to form a carbonaceous layer, and a cross-linked network formed by silicon-oxygen bonds improves the mechanical property of the fireproof plate material; a net-shaped structure formed by boron-oxygen bonds has high flame retardance; hydrogen fluoride generated by the fluorine element can interrupt the combustion chain reaction; aromatic bromine generates hydrogen bromide to cover the combustion surface, so that a flame-retardant effect is achieved; a carbonization layer is formed on the surface of the fireproof plate material through polymetaphosphoric acid generated by phosphate, so that a flame-retardant effect is achieved; the aromatic bromine modified phosphate flame retardant plays a plasticizing role in polyvinyl chloride, and the mechanical property of the polyvinyl chloride is improved.

The invention relates to a cold-resistant PBT plastic and a preparation method thereof, and belongs to the technical field of high polymer materials. The cold-resistant PBT plastic comprises the following components in parts by weight: 90-100 parts of PBT resin, 2-15 parts of a cold-resistant modifier, 5-25 parts of a modified flame retardant, 0.1-1 part of an antioxidant, 2-12 parts of a compatilizer and 0.1-2 parts of a lubricant, a polyurethane monomer in the cold-resistant modifier improves the impact resistance of the material; the Si-O bond of the product b is high in bond energy, long in bond length and excellent in low temperature resistance; the polyacrylate monomer is easy to slide and sticky and low in crosslinking degree; boron and phosphorus in the modified flame retardant are synergistic, a B-O-C carbon layer is formed at high temperature, flame-retardant gas is released, and smoke is reduced; in addition, a Si-O system prevents combustion products from escaping, thermal degradation is inhibited, low-smoke flame retardance is achieved, and the cold-resistant PBT plastic prepared by the invention not only has excellent low-temperature-resistant toughness and impact resistance, but also has a good flame-retardant effect.

A system is provided for an aircraft. This aircraft system includes an engine, a fuel system and an air system. The fuel system includes a fuel circuit, a fuel source, a heat exchanger and a turboexpander. The fuel circuit is configured to direct fuel from the fuel source, through the heat exchanger and the turboexpander, to the engine for combustion. The heat exchanger is configured to transfer heat energy from combustion products generated by the combustion of the fuel in the engine into the fuel in the fuel circuit. The air system is discrete from the engine. The air system includes an air compressor and the turboexpander. The air system is configured to expand the fuel directed across the turboexpander by the fuel circuit to power operation of the air compressor.

The invention provides a nanofluid fuel with metal carbide as an additive and a preparation method thereof.The nanofluid fuel comprises liquid fuel, the metal carbide and a surfactant, the metal carbide and the surfactant are evenly dispersed in the liquid fuel, the mass percent of the metal carbide is 1%-40%, the mass percent of the surfactant is 1%-20%, and the mass percent of the liquid fuel is 1%-20%. The mass percent of the surfactant is 1%-15%, and the balance is liquid fuel. By applying the technical scheme, the technical problems that in the prior art, the energy density of liquid fuel is insufficient, and the combustion heat release process of fuel is affected by surface oxidation and combustion products of traditional energy-containing nano metal particles or metal oxide particles are solved.

A mixture of a fuel and an oxidant is flowed into a rotating detonation engine defining a longitudinal axis and having an outer body and an inner body spaced from the outer body to thereby define an annular combustion chamber. The fuel is combusted in the presence of the oxidant in the annular combustion chamber so as to generate a detonation wave that rotates in the combustion chamber around the longitudinal axis and produces one or more combustion products that flow out of the rotating detonation engine. The one or more combustion products are mixed with a feedstock so as to decompose the feedstock.

Exhaust assemblies for vehicles and methods of installing exhaust systems on vehicles are disclosed. An exhaust assembly for a vehicle includes an exhaust inlet to receive combustion products from a drive unit, a catalytic converter to control emissions from combustion products received by the exhaust system, and a first piping assembly coupled to the exhaust inlet and the catalytic converter.

A turbine engine includes a compressor section for providing a compressed air flow, a fuel system for providing a primary combustor fuel supply, and a secondary combustor fuel supply. A primary combustor, located downstream of the compressor section, combusts the compressed air flow and the primary combustor fuel supply to generate primary combustion products. A turbine section, located downstream of the primary combustor, includes a turbine and a secondary combustor that further combusts the primary combustion products and the fuel from the secondary combustor fuel supply. A steam system provides a steam supply to the secondary combustor. The secondary combustor further combusts the primary combustion products and the secondary combustor fuel supply to generate secondary combustion products, and the turbine section is rotated by the secondary combustor steam supply and the inter-turbine combustion products.

The present disclosure relates to the technical field of solid-state hydrogen storage materials, and specifically provides a magnesium-based hydrogen storage material based on a core-shell structure, a preparation method therefor, and use thereof. The magnesium-based hydrogen storage material based on a core-shell structure provided by the present disclosure comprises a hydrogenated combustion product of Ni / Fe3O4@MIL and MgH2, wherein Ni / Fe3O4@MIL is a material having a core-shell structure. An inner core of Ni / Fe3O4@MIL comprises Ni-loaded Fe3O4 microspheres, and an outer shell of Ni / Fe3O4@MIL comprises an organic ligand. The magnesium-based hydrogen storage material based on a core-shell structure significantly improves the hydrogen storage performance of magnesium hydride, and can still maintain a high hydrogen absorption capacity at a low temperature.

The invention belongs to the technical field of diesel engine emission reduction, and particularly relates to a diesel engine nitrogen oxide reducing agent PN emission characteristic test system and test method. The diesel engine nitrogen oxide reducing agent PN emission characteristic test system comprises a combustor, a filter, a mixing pipe, an SCR catalyst and an ASC catalyst which are communicated in sequence. The combustor is used for introducing fuel and carrying out combustion reaction; the filter is used for filtering upstream particulate matters generated by combustion reaction; the mixing pipe is used for introducing a nitrogen oxide reducing agent and a simulation gas component, and is used for mixing the filtered combustion product, the nitrogen oxide reducing agent and the simulation gas component to form a mixed gas; the SCR catalyst is used for promoting a catalytic reduction reaction of the mixed gas; the ASC catalyst is used for carrying out ammoxidation reaction; and a downstream particle counter is arranged at an outlet of the ASC catalytic converter. By using the PN emission characteristic test system for the nitrogen oxide reducing agent of the diesel engine in the technical scheme, the particulate matter emission level of the nitrogen oxide reducing agent of the diesel engine can be tested.

The invention belongs to the field of simulation optimization control, and particularly relates to a biomass gas blending combustion parameter optimization simulation control system based on combustion product prediction, and the system comprises an acquisition module which carries out data preprocessing based on multi-source pilot frequency sampling and through frequency division domain adaptive filtering and variable step size gradient descent optimization; the prediction module is used for predicting combustion product characteristic indexes through a mechanism and data driven double-layer fusion model; the control mapping module is used for obtaining a boiler control response parameter set by adopting deep reinforcement learning strategy network analysis under multi-target constraint; and the simulation adjustment module is used for loading control parameters in the digital twin platform, judging deviation based on a dynamic self-adaptive threshold value and triggering closed-loop feedback adjustment. According to the method, the problems of inaccurate pollutant prediction and control lag caused by fluctuation of biomass raw materials are solved, and feed-forward accurate control and closed-loop adaptive optimization are realized.

The invention relates to the technical field of thermite, in particular to a thermite system of an ultralow condensed phase combustion product and a preparation method of the thermite system. The preparation method of the aluminothermic system comprises the following steps: S1, synthesizing nanoscale BiF3 particles; s2, immersing a mixed oxidizing agent into a copper nitrate solution, dropwise adding ammonia water into a system, reacting for a period of time, standing and aging the reaction system, performing centrifugal separation, washing, and performing vacuum freeze drying to obtain BiF3-coated TACN core-shell structure particles; and S3, adding the acid-activated nano aluminum powder and the BiF3-coated TACN core-shell structure particles into an n-hexane medium, carrying out ultrasonic treatment, and drying to obtain thermite powder. Through the high reaction interface of the nano-scale bismuth-based fluoride and the activation strategy of the high-energy gas production compound on the interface, the output of ultralow condensed phase combustion products and the efficient release of system energy are realized.

The invention belongs to the technical field of gas turbines, and relates to an indirect heating biomass gas turbine system and a method thereof, the indirect heating biomass gas turbine system comprises an air compressor, an air turbine, a generator, a combustion chamber, a first waste heat recovery module, an indirect heating module, a second waste heat recovery module and a third waste heat recovery module. The compressed air is heated in a mode of indirect heat exchange between the compressed air and the flue gas, direct contact between fuel combustion products and turbine blades is avoided, the problems of corrosion, dust deposition, abrasion, scaling and the like of the turbine blades are effectively prevented, the service life of core components such as the turbine blades is prolonged, and meanwhile the service life of the turbine blades is prolonged. The tail gas waste heat of the air turbine is used for heating compressed air, the average heat absorption temperature of air is increased, and therefore the fuel combustion thermoelectric conversion efficiency is improved, in addition, heat supply and cold supply are conducted on users through the tail gas waste heat of the air turbine, the energy utilization efficiency of the system is improved, and the energy consumption is reduced. And combined heat and power generation can be realized in winter, and combined cooling and power generation can be realized in summer.

The invention provides a preparation method of a thermite, which comprises the following steps: taking CuN (CN) 2 and aluminum powder as raw materials, adding an organic solvent, mixing, and carrying out vacuum drying to obtain the thermite, the mass ratio of the CuN (CN) 2 to the aluminum powder is (1: 1)-(1: 4). According to the method for preparing the thermite through CuN (CN) 2, a new thought for applying other oxides to an energetic material of the thermite is provided, the thermite can provide the heat of 1528.9 J / g and the gas production pressure of 50 KPa, and it is detected that a high-temperature-resistant material aluminum nitride is generated in a product obtained after combustion.

The preparation method comprises the following steps: dissolving lithium nitrate, manganous nitrate, cobalt nitrate, nickel nitrate, an organic fuel and an organic carbon source in deionized water to obtain a uniform mixed solution, atomizing the mixed solution to form carbon-containing fog drops, and preparing the lithium-rich manganese-based positive electrode material with the hierarchical pore micro-nano structure by taking nitrogen as a protective gas and a carrier gas, so as to obtain the lithium-rich manganese-based positive electrode material with the hierarchical pore micro-nano structure. Carrying out self-propagating combustion reaction on the carbon-containing fog drops at a certain ignition temperature to obtain combustion product powder; placing the combustion product in a crucible, and calcining in an inert atmosphere to obtain calcined powder; placing the calcined powder in a crucible, and calcining in an air atmosphere to remove carbon; and fully grinding the calcined product to obtain the lithium-rich manganese-based positive electrode powder with the hierarchical pore micro-nano structure. The lithium-rich manganese-based positive electrode material with the microporous-mesoporous hierarchical pore micro-nano structure is obtained, and the cycling stability of the lithium-rich manganese-based positive electrode material can be effectively prolonged. The method is simple and convenient in process, low in energy consumption, low in price and high in capacity preservation rate, and has a relatively good industrial application prospect.

Internal combustion engines, including engines producing power from solid or slow burning fuel(s), such as biological-based or petroleum-based fuels, wood, corn, biomass, coal, and waste products, and / or possibly other liquid or gaseous fluids, as well as methods for operating or implementing such engines, are disclosed herein. In an example embodiment, the engine includes a crankshaft, a piston, a cylinder having an internal cavity and several ports, and an assembly having a chamber having a first region within which solid fuel can be situated and combusted. The assembly further includes a diverter valve so that, depending upon a setting of the valve and during engine operation, first and second amounts of compressed air respectively proceed to the first region and to bypass the first region, and a combination of combustion products and the second amount proceeds via one of the ports to the part of the internal cavity.

The invention discloses an ammonia-coal mixed combustion burner, comprising: a plasma coal powder pre-combustion stage module, an ammonia two-stage combustion module, a coal powder main combustion stage module, and an air-graded secondary air module; in the plasma coal powder pre-combustion stage module, discharge is performed between electrodes to generate plasma, coal powder carried by primary air passes through a plasma fire core region to burn and generate a first coal powder flame, the first coal powder flame ignites ammonia fuel in the upstream of the ammonia two-stage combustion module to generate a stable ammonia-rich flame, combustion products and unburned reactants are mixed with air in the downstream of the ammonia two-stage combustion module to generate an ammonia-poor flame to heat the coal powder in the coal powder main combustion stage module to generate a second coal powder flame, and in the air-graded secondary air module, the secondary air is used to promote the full combustion of coal powder and ammonia, thereby realizing the stable combustion of the ammonia-coal mixed fuel, and effectively solving the problems of unstable combustion of ammonia coal and NO x Problems with excessive emissions and ammonia slip.

A method of controlling a deflagration combustion process in a pistonless combustor includes scavenging combustion products of the previous cycle, introducing air into the combustor thereby initiating a flow pattern having a first flow component within the combustor, introducing air into the pistonless combustor in a nonparallel angle in relation to the previous air input and thereby creating a second flow component to the flow pattern for increasing speed of combustion propagation, introducing fuel mixed into the air creating a fuel-air mixture flowing within the flow pattern, igniting the fuel-air mixture within the pistonless combustor and introducing fuel by direct injection after the ignition thereby increasing pressure within the pistonless combustor.

The invention belongs to the technical field of combustible material type identification and monitoring, and discloses a combustible material inversion method based on combustion product markers. According to the method, the artificial intelligence dynamic inversion algorithm model is constructed to invert the type and the content of the combustible, intelligent analysis and processing of multi-dimensional data are realized, the complex relationship between the combustion product and the combustible can be accurately analyzed, accurate inversion can also be performed in a mixed combustion scene, and the accuracy of combustible identification is improved. According to the method, qualitative analysis and quantitative analysis of the characteristic markers are performed according to original detection data through gas chromatography-mass spectrometry detection analysis, the method is suitable for various organic compounds and part of inorganic compounds, and the research and application range is greatly expanded. The method can be suitable for a smoldering stage or a combustion stage of a fire scene, combustible identification and analysis can be carried out in real time, a basis is provided for restraining fire behavior expansion, and fire loss is reduced to the maximum extent.

A gas destruction system using a gas destroying device communicatively coupled to an electronic controller subsystem for neutralizing unwanted gas emissions. The system includes a gas destruction device and method and can be customized to variable conditions by way of controlling available flow area. The disclosed gas destruction device includes multiple combustion manifolds separated by valves, which allow gas to flow to sets of nozzles as needed to maintain stable combustion. The system consists of multiple nozzles for gas flow, a main shutoff valve, a flow measurement sensor, and an igniter and power source. The combustion products are allowed to flow through the exhaust outlet attached to the combustor. A communicator device is included in the system to send system information, preferably wirelessly. The system can operate autonomously via local or remote controllers, or manually via local or remote commands.

The invention provides a burner apparatus comprising:a combustion chamber (8);a fuel dispenser (15, 16) arranged to direct a flow of fuel into the combustion chamber (8), the fuel dispenser (15, 16) being located at an upstream end of the combustion chamber and being connected or connectable to a fuel supply;an airflow modifier device (10), located at an upstream end of the combustion chamber, for controlling a primary air flow into the combustion chamber (8), the airflow modifier device (10) being configured to facilitate mixing of the air with the fuel to give a mixture for combustion; andone or more secondary air channels (24) for directing a cooling secondary air flow onto a stream of combustion products (e.g. flame) as the stream of combustion products emerges from a downstream end of the combustion chamber.Also provided are a dryer apparatus comprising a burner apparatus as described herein and a method of drying aggregates using a burner apparatus as described herein.

A system and method for generating power and steam for a hydrocarbon recovery operation, in which a fuel gas and oxygen are combusted in a carbon dioxide working fluid in at least one combustor, the combustion products driving a turbine to generate power, and extracting heat from the turbine output stream, part of the heat used for heating the carbon dioxide working fluid before the combustion stage and part of the heat used for heating a feedwater to generate steam.

The invention discloses a device and a method for treating and recycling radioactive CO2 gas in nuclear-grade waste combustion products. The device comprises a combustion unit, a combustion unit and a recycling unit, the filtering unit is connected with the combustion unit and used for filtering mixed gas containing radioactive CO2 generated in the nuclear-grade waste combustion process; the cooling unit is connected with the filtering unit; the purification unit is connected with the cooling unit; the trapping and regenerating unit is connected with the purifying unit; and the circulating unit is connected with the combustion unit and the trapping and regenerating unit. The device is simple in structure, the adsorption material is convenient to regenerate and replace, the device can be repeatedly used for a long time, CO2 can be selectively adsorbed from nuclear power plant mixed waste gas or other mixed gas, the development requirements of carbon emission control and carbon neutralization are met, environmental radiation pollution caused by nuclear power plant waste gas or other waste gas in the nature can be relieved, and the environmental pollution is reduced. Meanwhile, carbon isotope resources can be effectively recycled, the process is safe and controllable, and the risk of radioactive substance leakage is avoided.

The utility model discloses a collection device for combustion products of an aero-engine fuel-rich gas generator, which adopts an asbestos fiber material, a zeolite molecular sieve, sandy soil and a filter screen for multiple filtration, and filters and collects solid-liquid components in outlet flue gas; and under the action of the water-cooling coil pipe, the residual outlet flue gas is cooled to a safe temperature, and the low-pressure gas tank is utilized to complete the collection of gas components. The collecting device disclosed by the utility model is stable in material performance, low in price, good in usability and service life, and capable of obtaining remarkable working and economic benefits.

The invention discloses a graphene oxide-containing lubricating oil composition for a heavy-load methanol fuel engine. The graphene oxide-containing lubricating oil composition is prepared from the following raw materials: a dispersing viscosity index agent, an antioxidant, an anti-wear agent, a clearing agent, a dispersing agent and base oil. The dispersing type viscosity index improver P (BMA + LMA + TMA + NVP) copolymer contains a strong N polar group, so that graphene oxide does not need to be continuously modified, surface functional groups do not need to be removed, the cost is greatly reduced, industrial application is facilitated, meanwhile, the dispersing type viscosity index improver is applied to a methanol fuel engine, can be absorbed with combustion products such as methanol and formic acid and is more beneficial to dispersion of graphene, and therefore, the dispersing type viscosity index improver has a good application prospect. The graphene additive is very suitable for being applied to methanol fuel engine lubricating oil and can be applied to a large scale in a new field.

The invention provides low-ash low-sulfur vehicle lubricating oil and a preparation method thereof, and belongs to the technical field of lubricating oil. According to the invention, an amphiphilic molecular structure is generated through modified polyisobutylene succinic anhydride and polyamidoamine, a supramolecular ordered film is formed through self-assembly, combustion products and carbon deposition particles are captured, and ash content and sediment generation are reduced, so that the performance requirements of low-ash-content and low-sulfur lubricating oil are met; the reversible reaction of N-(2-aminoethyl) maleimide and 2, 5-bis (aminomethyl) furan is adopted to endow molecular broken bond-recombination self-repairing capability, and micro cracks of a lubricating system are repaired; for the anti-wear agent, UV / O3 is adopted to activate MXene, and multi-step modification of tributyl borate and fluoroalkyl silane is combined, so that the lubricating oil is endowed with low friction coefficient, high thermal stability and excellent dispersing performance, lasting lubrication and effective protection are provided under high-temperature and high-pressure conditions, and lasting lubrication protection under extreme working conditions is realized.