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462 results about "Mixed fuel" patented technology

Ammonia and coal mixed combustion burner

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.
Owner:INST OF ENERGY HEFEI COMPREHENSIVE NAT SCI CENT (ANHUI ENERGY LAB)

Gas turbine natural gas hydrogen-doped combustion optimization method and system

The invention discloses a natural gas hydrogen-doped combustion optimization method and system for a gas turbine, and the method comprises the steps: obtaining combustion state parameters of a mixed fuel under different mixing proportions under an experimental condition, the combustion state parameters comprising combustion characteristic data and emission characteristic data; establishing a numerical calculation model for describing the combustion process and emission characteristics of the mixed fuel on the basis of combustion science and fluid mechanics, and performing numerical simulation on the mixed fuel in different mixing proportions by adopting the numerical calculation model to obtain combustion state parameters of the mixed fuel; comparing and analyzing the combustion state parameters obtained by the experiment and the combustion state parameters obtained by the numerical simulation, and optimizing the numerical calculation model according to the analysis result; expanding the mixing proportion of the mixed fuel, and performing numerical simulation on the expanded mixed fuel by adopting the optimized numerical calculation model to obtain combustion state parameters of the mixed fuel and construct a training data set; and adopting the training data set to train the machine learning model, and adopting the trained machine learning model to predict the mixing proportion of the mixed fuel. According to the method, by updating a numerical calculation model and a machine learning model, optimal prediction under different fuel and combustion conditions can be realized.
Owner:XIAN THERMAL POWER RES INST CO LTD

Systems and methods for mixing hydrogen with natural gas

Systems and methods for injecting hydrogen into a natural gas pipeline to lower the carbon intensity of the resulting fuel blend while achieving the required energy output thereof for the end user. In one embodiment a blend ratio for the blended fuel comprising hydrogen and natural gas is determined based at least in part on a minimum energy output for fuel combusted at an end-use location connected to the natural gas pipeline so that the blended fuel (i) has a lower carbon intensity than a natural gas stream flowing in the natural gas pipeline, and (ii) provides at least the minimum energy output when combusted at the end-use location. Further, one or more embodiments include adjusting a control valve of a hydrogen injection assembly connected to the natural gas pipeline upstream of the end-use location based at least in part on the blend ratio to thereby mix hydrogen into the natural gas pipeline and produce the blended fuel.
Owner:MARATHON PETROLEUM COMPANY LP

Simplified modeling method and device for complex mixed fuel combustion reaction kinetic model and computer program product

The invention provides a simplified modeling method and device for a complex mixed fuel combustion reaction kinetic model and a computer program product. The simplified modeling method comprises the steps of model coupling, primary model simplification by adopting a directed relation graph method based on error transfer and a species sensitivity analysis method, and optimization of the primary simplified model by taking an optimal pre-exponential factor, a temperature index and activation energy of a three-parameter modified Arranius equation as optimization objects. And the optimization model is simplified again. According to the method, a method of directly simplifying a complex model is adopted, and the model does not need to be manually disassembled and constructed; the method does not need deep reaction path analysis, does not need programming, is suitable for combustion simulation engineering practitioners without the basis of combustion reaction kinetics research, and is used for rapidly making a fuel mechanism model and carrying out reasonable verification.
Owner:SHANGHAI SHIP POWER INNOVATION CENTER CO LTD

Systems and methods for mixing hydrogen with natural gas

Systems and methods for injecting hydrogen into a natural gas pipeline to lower the carbon intensity of the resulting fuel blend while achieving the required energy output thereof for the end user. In one embodiment a blend ratio for the blended fuel comprising hydrogen and natural gas is determined based at least in part on a minimum energy output for fuel combusted at an end-use location connected to the natural gas pipeline so that the blended fuel (i) has a lower carbon intensity than a natural gas stream flowing in the natural gas pipeline, and (ii) provides at least the minimum energy output when combusted at the end-use location. Further, one or more embodiments include adjusting a control valve of a hydrogen injection assembly connected to the natural gas pipeline upstream of the end-use location based at least in part on the blend ratio to thereby mix hydrogen into the natural gas pipeline and produce the blended fuel.
Owner:MARATHON PETROLEUM COMPANY LP

Simplified modeling method, apparatus and computer program product for complex mixed fuel combustion reaction kinetics modeling

The application provides a simplified modeling method, device and computer program product of a complex mixed fuel combustion reaction kinetics model. The simplified modeling method comprises the following steps: model coupling, one-time simplification of the model by using an error transmission-based directed relationship diagram method and a species sensitivity analysis method, optimization of the one-time simplified model by taking the optimal pre-exponential factor, temperature index and activation energy of the three-parameter modified Arrhenius equation as optimization objects, and re-simplification of the optimized model. The application adopts a method for directly simplifying a complex model, does not need to artificially disassemble and construct the model, does not need to perform in-depth reaction path analysis, does not need to perform program writing, is suitable for combustion simulation engineering practitioners without a combustion reaction kinetics research foundation, is used to quickly produce a fuel mechanism model, and is reasonably verified.
Owner:SHANGHAI SHIP POWER INNOVATION CENTER CO LTD

Amino mixed fuel explosion characteristic visualization and explosion suppression coordinated regulation and control system and method

The invention discloses an amino mixed fuel explosion characteristic visualization and explosion suppression coordinated regulation and control system and method, and the system comprises an explosion suppression device which is disposed in a combustion chamber and is in communication connection with a holographic monitoring device and an explosion overpressure real-time prediction model. A graded explosion suppression scheme is set according to the safety early warning grade, so that active intervention of explosion suppression intensity and mode matched with combustion or explosion development stages with different intensities in the combustion cavity is implemented. Therefore, visualization of the mixed gas combustion and explosion dynamic process under the multi-parameter coupling condition can be achieved, and the comprehensiveness and reliability of combustion and explosion research are remarkably improved; through real-time monitoring and intelligent prediction of the explosion process, the explosion process in the device can be rapidly started, the explosion suppression response can be optimized, the explosion development can be suppressed, the integrity and operation safety of an experiment system can be guaranteed, and the intrinsic safety and the system protection capability of the experiment process can be effectively enhanced.
Owner:HENAN POLICE ACAD

A method for using biomass fuel for blast furnace injection

The present invention discloses a method for injecting biomass fuel into a blast furnace, wherein the mixed fuel obtained by replacing part of the fossil fuel with biomass shaped fuel that has not been carbonized at high temperature is injected into the blast furnace from the tuyere of the blast furnace through an injection device to complete combustion and smelting reactions. The method of the present invention can reduce the use of fossil fuels, reduce carbon emissions and SO2 pollution without affecting smelting indicators. The implementation process does not require the introduction of carbonization equipment, eliminates the grinding and powder transportation process of pipeline fuel transportation, explosion-proof safety, and environmental protection links, saves a lot of investment and operating costs, has high safety and reliability, high economic utilization value, and can achieve economic and green smelting.
Owner:PANGANG GRP PANZHIHUA STEEL & VANADIUM

Liquid ammonia-hydrogen dual-fuel premixing direct injection combustion chamber

The invention relates to the field of fuel injection systems of internal combustion engines, in particular to a liquid ammonia-hydrogen dual-fuel premixing direct injection combustion chamber which comprises a pre-combustion chamber, an injection end of the pre-combustion chamber is mounted in the combustion chamber, and a spark plug and a mixed fuel injection structure are mounted on the pre-combustion chamber. The inlet end of the mixed fuel injection structure is communicated with a liquid ammonia and hydrogen mixing structure, a hydrogen inlet is formed in the side wall of the liquid ammonia and hydrogen mixing structure, the inlet end of the liquid ammonia and hydrogen mixing structure is communicated with a liquid ammonia injection structure, an ammonia inlet is formed in the side wall of the liquid ammonia injection structure, and a valve structure is arranged in the liquid ammonia injection structure. The problems of fuel injection and ignition in the ammonia-hydrogen fusion engine are solved.
Owner:HARBIN ENG UNIV

Printing and dyeing sludge mixed fuel preparation device

The utility model discloses a printing and dyeing sludge mixed fuel preparation device, belongs to the technical field of sludge recycling, and solves the problems that the method only stays in one-to-one processing links and cannot be integrated in a whole set of equipment for production and processing, and the overall working efficiency is natural and poor. Comprising an auxiliary material feeding module, a material screening module located below the auxiliary material feeding module, a feeding module located at the discharging end of the material screening module, a material mixing module and a sludge feeding module, and the discharging end of the feeding module and the discharging end of the sludge feeding module communicate with the interior of the material mixing module. Sludge is directly conveyed to the mixing module through the sludge feeding module, auxiliary materials are fed into the auxiliary material feeding module at the same time, the materials are fed into the mixing module through the feeding module to be mixed after being screened by the screening module, the two materials are fully mixed through the mixing module and then directly discharged, and printing and dyeing sludge mixed fuel is formed. Integrated production is achieved in the process, and the working efficiency is remarkably improved.
Owner:浙江浙能滨海环保能源有限公司

High-density fuel oil and preparation method thereof

The invention discloses high-density fuel oil and a preparation method thereof. Comprising the following steps: carrying out alkylation reaction on medium and low temperature coal tar fractions, cyclohexane, a catalyst and a modifier to obtain alkylated modified coal tar; and hydrofining the alkylated modified coal tar to obtain the high-density fuel oil. Through alkylation modification reaction of medium and low temperature coal tar fractions, the problem of ring growth when coal tar is used as a raw material to synthesize high-density fuel is solved. The preparation method is simple in step, alkylation reaction raw materials are easy to obtain, and the physical and chemical properties of the prepared coal-based mixed fuel are superior to those of a high-density fuel prepared from a single compound. The density value of the high-density fuel oil is larger than 1.092 g / mL, the heat value is larger than 42.8 MJ / L, and the high-density fuel oil can meet the requirement for development of high-performance aircrafts.
Owner:SHAANXI COAL-BASED SPECIAL FUEL RES INST CO LTD

Fuel oil and air mixing structure special for combustor

The utility model discloses a special fuel oil and air mixing structure for a burner, which relates to the field of burner accessories and comprises an air inlet bin, two ends of the air inlet bin are respectively connected with an air inlet and a transmission bin, the outer side of the transmission bin is connected with a mixing bin and an air outlet, and a motor is mounted in the transmission bin. The output end of the motor is connected with air inlet fan blades and diffusion fan blades, the air inlet fan blades are located in the air inlet bin, the diffusion fan blades are located in the mixing bin, an oil inlet pipe is installed on the outer side of the mixing bin and extends into the mixing bin to be aligned with the diffusion fan blades, and a fixing steel ring is installed on the inner wall of the mixing bin. By means of the sealing plate and the fixing steel ring, when the combustor is not used any more, the sealing plate is pulled by the return spring to be tightly attached to the fixing steel ring, and the edge of the sealing plate is sealed through the inclined sleeve, so that mixed fuel in the mixing bin cannot be discharged from the transmission bin, and fuel leakage is reduced.
Owner:NANJING JIARAN ELECTROMECHANICAL EQUIP CO LTD

Burner, boiler and combustion method

To provide a burner capable of suppressing combustion deterioration of pulverized fuel when pulverized fuel and ammonia are mixed and burned, a boiler, and a combustion method.SOLUTION: A burner comprises: a pulverized fuel supply pipe that guides pulverized fuel and primary air for transporting the pulverized fuel to a furnace; a first gaseous ammonia supply pipe that supplies gaseous ammonia to the pulverized fuel supply pipe; and a mixed fuel nozzle that ejects a mixture of the pulverized fuel, the gaseous ammonia, and the primary air from the pulverized fuel supply pipe into the furnace. The burner is configured such that a ratio of an amount of the gaseous ammonia to a total amount of the pulverized fuel and the gaseous ammonia supplied to the furnace through the mixed fuel nozzle is 10% or less on a calorific value basis.SELECTED DRAWING: Figure 3
Owner:MITSUBISHI HEAVY IND LTD

Ammonia mixed combustion engine

An ammonia mixed combustion engine 1 that operates by burning ammonia and a hydrocarbon liquid fuel causes a control unit 2 to implement at least one of decrease or increase in an air excess ratio in fuel, advance or retard in injection timing of the liquid fuel, and decrease or increase in injection pressure of the liquid fuel in accordance with increase or decrease in a mixed fuel burning ratio of ammonia in the fuel.
Owner:YANMAR HLDG CO LTD

Sludge treatment system utilizing coal mill to dry sludge and coupling coal-fired power generation

The invention relates to the technical field of sludge treatment, and discloses a sludge treatment system for drying sludge by using a coal mill and coupling coal-fired power generation, the sludge treatment system comprises the coal mill, a sludge charging barrel and a coal-fired charging barrel are coaxially arranged in the coal mill, the coal-fired charging barrel is arranged in the sludge charging barrel, and the coal-fired charging barrel is arranged in the coal mill. An air inlet pipe is communicated between the sludge charging barrel and the rotary hot air nozzle ring, a rotating shaft is fixedly connected to the millstone, the rotating shaft is coaxially arranged in the fire coal charging barrel, a first-stage crushing assembly and a second-stage crushing assembly are arranged between the sludge charging barrel and the fire coal charging barrel, the first-stage crushing assembly is located above the second-stage crushing assembly, and the second-stage crushing assembly is located above the second-stage crushing assembly. And the rotating shaft is used for driving the first-stage crushing assembly and the second-stage crushing assembly to rotate. The coal mill has the advantages that wet sludge is prevented from being attached to the surfaces of the grinding disc and the grinding rollers, normal operation of the coal mill equipment is kept, meanwhile, the grinding and screening efficiency of the wet sludge is improved, continuous supply of pulverized coal and sludge powder mixed fuel is guaranteed, and the power generation efficiency of a power station boiler is improved.
Owner:SHANDONG QINGDAHUIZHONG CLEAN ENERGY TECH CO LTD

Method and system for intelligently predicting alkali metal slagging tendency of biomass gas coupled coal-fired boiler

The invention discloses an intelligent prediction method and system for the alkali metal slagging tendency of a biomass gas coupled coal-fired boiler, and relates to the field of slagging tendency prediction.The intelligent prediction method comprises the steps that flue gas temperature data of a target area of a convection heating surface of the boiler is obtained, and the ash content melting characteristic temperature and alkali metal element content data of mixed fuel entering the boiler are obtained; performing physically constrained ash temperature-liquid phase yield adaptive correlation calculation, calculating coupling adhesion force, generating equivalent adhesion strength distribution of particle surfaces, counting particle turbulence collision physical parameters based on the equivalent adhesion strength distribution of the particle surfaces, and judging effective collision adhesion efficiency based on energy competition. The method comprises the following steps: calculating the agglomeration growth rate of ash particles in a flow field, outputting the spatial growth configuration of ash particle aggregates, carrying out macroscopic mechanical characteristic analysis and bridging stability judgment on an accumulation body at the throat part of the dry bottom hopper according to the spatial growth configuration of the ash particle aggregates, and outputting the blockage risk level of the dry bottom hopper, thereby effectively solving the blockage problem of the dry bottom hopper.
Owner:JIANGSU GUOXIN RESEARCH INSTITUTE CO LTD

Ammonia-coal mixed combustion burner

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.
Owner:INST OF ENERGY HEFEI COMPREHENSIVE NAT SCI CENT (ANHUI ENERGY LAB)

Injection device

An injection device for injecting a combined water / gaseous fuel mixture into a combustion space of an engine. The injection device comprises: a first inlet for receiving a supply of water into a water chamber; a second inlet for receiving a supply of gaseous fuel into a flow passage; a mixing device comprising a valve assembly which is configured to control the flow of water between the water chamber and the flow passage so as to establish a combined gaseous fuel / water mixture within the flow passage; and an injection nozzle including a valve needle which is operable to control the delivery of the combined gaseous fuel / water mixture from the flow passage into the combustion space. The disclosure also extends to a fuel injection system.
Owner:PHINIA DELPHI LUXEMBOURG SARL

Method of mixing fuel and oxidant, and method of decomposing feedstock

To provide a novel method of mixing fuel and an oxidant, and a novel method of decomposing a feedstock using a feedstock reactor.SOLUTION: Fuel is mixed with an oxidant to form a first combustible gas mixture mainly comprising non-plug flows. The first combustible gas mixture transitions to a second combustible gas mixture mainly comprising plug lows. The second combustible gas mixture is combusted to form one or more combustion products. One or more combustion products are mixed with the feedstock to decompose the feedstock.SELECTED DRAWING: Figure 2
Owner:EKONA POWER INC

Mixed fuel, preparation system and preparation method

The invention relates to the technical field of mixed fuel preparation, in particular to mixed fuel, a preparation system and a preparation method, the mixed fuel is prepared through the preparation system, fuel to be mixed is conveyed into a maker through an oil inlet control module, and the maker is vacuumized through an electric control pressure relief assembly; in a vacuum environment, the high-pressure hydrogen preparation module conveys hydrogen to fuel in the producer, the gas-liquid mixing assembly mixes the high-pressure hydrogen and the fuel, hydrogen is prepared into hydrogen nano bubbles in the mixing process, so that a mixture of the fuel and the hydrogen nano bubbles is obtained through mixing, the mixed fuel is output into the producer, and the fuel and the hydrogen nano bubbles are mixed. And under the condition of identifying that the preparation of the mixed fuel in the maker is completed, the mixed fuel is stored through the oil storage control module, the mixed fuel containing 4-7 billion hydrogen nano bubbles per milliliter of liquid fuel is obtained, the fuel with a higher combustion value is prepared, the fuel consumption is reduced, and the fuel is adaptive to an HCCL engine, so that the working stability is improved.
Owner:QINGDAO YANHUA INNOVATION TECHNOLOGY CO LTD

Method for manufacture of a biomass-based diesel from feedstock including olefin oligomers

The present technology relates to biofuels, and more particularly, to biomass-based diesel from olefin oligomers. Diesel fuels with cetane number of 49 or greater are prepared by blending hydrocarbons produced by olefin oligomerization with renewable diesel, resulting in a blended fuel that has a lower cloud point than the cloud point of the renewable diesel. A different aspect relates to an integrated process for lipid HDO and olefin oligomerization wherein the propane coproduct of lipid HDO is subjected to dehydrogenation to produce a vapor stream having propylene and hydrogen. The propylene is subsequently oligomerized to iso-olefins and the iso-olefins are combined with the lipid feed for hydrogenation in the HDO reactor.
Owner:RENEWABLE ENERGY GRP INC

Method for roasting beryllium-containing material by adopting mixed fuel

The method for roasting the beryllium-containing material by adopting the mixed fuel comprises the following steps: I, mixing a beryllium-containing raw material with biomass to obtain a beryllium-containing mixture; and II, roasting the beryllium-containing mixture by adopting a mixed combustible gas comprising hydrogen and a combustion-supporting gas to obtain a roasted product. According to the method for roasting the beryllium-containing material by adopting the mixed fuel, the beryllium-containing material is roasted by utilizing the hydrogen and the combustion-supporting gas, so that the carbon emission is reduced. And meanwhile, in the decomposition process of the beryllium-containing material, C in biomass and generated CO are used for reducing BeO at a high temperature, so that part of elemental beryllium is generated in a roasted product, the efficiency of the subsequent elemental beryllium preparation process is improved, and the technological process is shortened.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD

Catalytic porous medium clean combustion reactor for hydrogen-ammonia mixed fuel

The invention discloses a catalytic porous medium clean combustion reactor for hydrogen-ammonia blended fuel, and relates to the technical field of reactors. The reactor comprises a reactor body, wherein a filtering assembly and a crushing assembly are mounted at the top of the reactor body; a combustion chamber is arranged in the reactor body, a ceramic porous plate is arranged on the combustion chamber, and an air inlet pipe, an air outlet pipe and a catalysis pipe are arranged on one side of the reactor body. A composite crushing structure of primary crushing of the crushing rods and secondary impact of the elastic crushing rods is adopted, and the crushing efficiency is improved by 40% or above compared with a traditional rigid structure; a conical filter screen of the filter assembly is matched with a clamping piece rapid dismounting and mounting mechanism, the screening efficiency is improved by 30%, shutdown is not needed in the impurity recycling process, retention materials can be collected by connecting lead screws between an annular shielding plate of a sliding shielding piece and an upper barrel body and a lower barrel body of a rotary fixing barrel, and the manual maintenance cost is reduced.
Owner:CHINA JILIANG UNIV +1

Hot zone gas treatment unit of solid oxide fuel cell

The invention relates to a hot zone gas treatment unit of a solid oxide fuel cell. A mixer is transversely arranged in a combustion pipe, a combustion cavity is formed in the lower end of the mixer, an anode waste gas conveying pipe and a cathode waste gas conveying pipe are arranged at the upper end of the mixer, the anode waste gas conveying pipe and the cathode waste gas conveying pipe are connected into the galvanic pile, and the lower ends of the anode waste gas conveying pipe and the cathode waste gas conveying pipe are communicated with the combustion cavity. The preheating pipe and the heat exchanger are sleeved on the combustion pipe, a deionized water conveying pipe, a fuel conveying pipe and a mixed gas conveying pipe are arranged outside the preheating pipe, the mixed gas conveying pipe is communicated with the reformer, a reforming conveying pipe at the lower end of the reformer penetrates through the heat exchanger and is connected into the electric pile, and an air pipe penetrates through the heat exchanger and is connected into the electric pile. Waste gas conveyed by the anode waste gas conveying pipe and the cathode waste gas conveying pipe is combusted in the combustion cavity to generate heat, preheated fuel and deionized water are vaporized, the mixed fuel and vaporized deionized water enter the reformer, then are heated by the heat exchanger and enter the electric pile, and heat recycling is achieved.
Owner:GUANGDONG FORAN TECH CO LTD +1

Boiler cold-state starting combustion control method for sludge and solid waste collaborative incineration

The invention provides a cold-state boiler starting combustion control method for a sludge and solid waste collaborative incineration boiler. Whether the feeding rate of ignition fuel, auxiliary solid waste fuel and sludge meets the requirement for safe operation of the boiler or not can be rapidly judged. The method comprises the following steps: 1, obtaining the length, width and height sizes of a hearth and the maximum heating rate of the castable; calculating the total heat exchange area and the total volume of the hearth, the total energy of ignition fuel fed into the hearth during combustion, the temperature rise value of air in the hearth after the ignition fuel is combusted, and the temperature rise value of the castable in unit time; comparing the temperature rise value of the castable in unit time with the maximum temperature rise rate of the castable; 2, calculating smoke components in the hearth when the auxiliary solid waste fuel and the sludge are added, the total energy of mixed fuel fed into the hearth during combustion, the temperature rise value of smoke in the hearth space after the mixed fuel is combusted, and the temperature rise value of the castable in unit time under the condition that the mixed fuel is added; and comparing the temperature rise value of the castable in unit time with the maximum temperature rise rate of the castable.
Owner:CHINA UNITED ENG

Technical method and mixer for roasting aluminum electrolysis anode by using natural gas and hydrogen mixed fuel

The invention provides a technical method for using natural gas and hydrogen mixed fuel for aluminum electrolysis anode roasting and a mixer, and belongs to the technical field of anode roasting. The invention relates to the technical field of natural gas mixing. According to the method, hydrogen in a certain proportion is mixed into natural gas through the mixer, the mixed gas serves as fuel to roast the aluminum electrolysis anode green block, the production process requirement is met, and the curve is matched with an original roasting temperature rise curve. According to the method, carbon emission in the production process can be reduced, climate changes can be coped, the combustion efficiency of natural gas can be improved, and energy waste in the production process is reduced. And the compression strength and the specific resistance of the aluminum electrolysis prebaked anode prepared from the fuel are equivalent to those of an aluminum electrolysis prebaked anode obtained by calcining natural gas.
Owner:ALUMINUM CORP OF CHINA LTD

Engine fuel real-time mixing method and device

The invention discloses an engine fuel real-time mixing method and device and relates to the technical field of engines, and the method comprises the steps that real-time engine working condition parameters of a mixed fuel engine are collected; iteratively optimizing the physicochemical property parameters of the mixed fuel of the mixed fuel engine by adopting an optimization algorithm based on the real-time engine working condition parameters, and outputting the optimized physicochemical property parameters of the mixed fuel; when the mixed fuel physicochemical property parameters of the mixed fuel engine are iteratively optimized each time, the real-time engine working condition parameters and the currently optimized mixed fuel physicochemical property parameters are input into the trained oil consumption and emission prediction model to output oil consumption and emission data prediction values, and the target function value of the optimization algorithm is calculated; when the target function value reaches a preset requirement, outputting the optimized physicochemical property parameters of the mixed fuel; and determining the mixing ratio of the first fuel to the second fuel according to the optimized physicochemical property parameters of the mixed fuel. According to the invention, low oil consumption and low pollutant emission under all working conditions can be realized.
Owner:JIANGSU SHANGJIAO CARBON NEUTRAL TECHNOLOGY CO LTD

Supply method and device for ammonia mixed fuel

To provide a technique capable of supplying ammonia mixed fuel gas without deposit.SOLUTION: A method includes processes of: removing CO2 from CO2 containing fuel gas; dehumidifying the fuel gas from which CO2 has been removed; and mixing ammonia in a piping system when the dehumidified fuel gas from which CO2 has been removed is transferred to a fuel gas use facility by using the piping system. In the method, the piping system from a position where ammonia is mixed to the fuel gas use facility is warmed to maintain a temperature of the fuel gas at 60°C or higher. A device includes: a mixer for mixing ammonia in the middle of the piping system for transferring the CO2 containing fuel gas; a heater for heating the piping system from the mixer to the fuel gas use facility to cause the temperature of the fuel gas to become 60°C or higher; a CO2 removal device that is installed in the piping system upstream of the mixer and removes CO2 from the CO2 containing fuel gas; and a dehumidification device installed between the CO2 removal device and the mixer.SELECTED DRAWING: Figure 1
Owner:JFE STEEL CORP

Combined upgrading method of flue gas modified wheat straw and lignite mixed fuel

The present invention discloses a combined quality improvement method for a flue gas modified wheat straw and lignite mixed fuel, comprising the following steps: uniformly mixing wheat straw powder and lignite powder to obtain a mixture, drying the mixture at 200-270°C for 25-30 minutes in a flue gas atmosphere, and cooling to room temperature to obtain a flue gas modified wheat straw and lignite mixed fuel. The fuel quality and physical properties of the flue gas modified wheat straw and lignite mixed fuel are improved. The combined quality improvement method can compensate for the loss of combustible components during the drying process, enhance the hydrophobicity of the flue gas modified wheat straw and lignite mixed fuel while improving the quality of the combined quality improved fuel, effectively improve the combined utilization value of lignite and wheat straw, significantly reduce the emission of NOx from the combustion product, and reduce pollution, effectively improve the utilization value of wheat straw and lignite, and achieve efficient energy saving and carbon reduction at the production capacity end.
Owner:HEBEI UNIV OF TECH

A method for plating a gamma-TiAl material turbine blade serrated crown wear resistant coating

The present application relates to the technical field of metal material plating, in particular to a kind of γ-TiAl material turbine blade sawtooth crown wear-resistant coating plating method, it includes multi-station special plating device and aviation kerosene oxygen mixed fuel supersonic flame spraying process.Plating device is divided into two kinds of linear arrangement and annular arrangement, respectively realize 15 pieces and 30 pieces of blade one time clamping plating, significantly improve efficiency;Device realizes accurate positioning and non-spraying area protection by positioning block, pressing plate assembly and other structures.Co-Mo-Cr-Si wear-resistant coating is plated by using supersonic flame spraying process, heat input is low, coating is dense, and bonding strength is high;Subsequent grinding processing makes coating surface roughness reach Ra<0.8 μm.The present application solves the problem of high heat input and low construction efficiency in the prior art, and meets the requirements of high precision and high reliability for aeroengine.
Owner:SHENYANG LIMING AERO-ENGINE GROUP CORPORATION