5723 results about "Ammonia gas" 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 relates to the technical field of flue gas treatment, in particular to a sintering flue gas denitration and dust removal integrated post-CO removal method which is specifically completed through cooperation of a sintering flue gas treatment system, and the sintering flue gas treatment system comprises a GGH heat exchanger, a desulfurization reactor, a denitration dust remover and a CO reactor which are sequentially communicated through pipelines. The CO catalyst module is a transition metal oxide CO catalyst; the cleaning device is used for cleaning ash of the CO catalyst module; the ammonia gas is sprayed into the outlet of the desulfurization reactor, so that ammonia escape is reduced, poisoning of the CO catalyst module is reduced, the catalytic efficiency of the CO catalyst module is improved, and the service life of the CO catalyst module is prolonged; the CO catalyst module is regularly subjected to air blowing and back blowing in a closed area, so that impurities such as carbon deposition on the CO catalyst module are cleaned, more active sites are exposed, the service life of the CO catalyst module is prolonged, and the investment and operation cost is reduced by adopting a transition metal oxide CO catalyst.

The invention discloses a device and a method for producing oxamide, and relates to the field of chemical production. The method for producing oxamide specifically comprises the following steps: mixing a methanol solution of liquid ammonia and a methanol solution of dimethyl oxalate, carrying out ammonolysis reaction, carrying out flash evaporation, filtration and drying on first slurry obtained after the reaction is finished to obtain solid oxamide, and refining a liquid phase obtained by solid-liquid separation of the first slurry to obtain a byproduct methanol, ammonia in the tail gas is washed and absorbed by dimethyl oxalate and then returns to a reaction system. In the oxamide production process, dimethyl oxalate reacts with ammonia gas in mixed gas generated in the reaction process, and the obtained product is continuously subjected to subsequent ammonolysis reaction, so that the utilization rate of reaction materials is increased; meanwhile, a condenser is not used for condensing ammonia gas and methanol and then separating alcohol and ammonia, so that condensing equipment and cooling water are saved, the production cost is reduced, and industrial production is facilitated.

The preparation method comprises the following steps: treating sepiolite serving as a raw material with 3-aminopropyltriethoxysilane to prepare aminated sepiolite, ultrasonically blending the aminated sepiolite and a modified filler, then treating with phytic acid to prepare a flame-retardant filler, melting bisphenol A polycarbonate, blending with the flame-retardant filler, and carrying out extrusion molding to obtain the flame-retardant fireproof plastic. When the flame-retardant fireproof plastic is combusted, the flame-retardant filler is subjected to evaporation of hot water molecules to cause structural expansion and form an isolation layer, meanwhile, evaporation of the water molecules can take away heat, released ammonia gas can reduce the content of smoke so as to achieve the flame-retardant effect, and generated inorganic acid and phosphate ester are dehydrated and carbonized, so that the flame-retardant fireproof plastic has a good flame-retardant effect. The carbon layer with large interlayer spacing is formed through cooperation with the isolation layer, an organic silicon structure is contained, Si-C can be formed, then the density of the carbon layer is increased, aluminum oxide and magnesium oxide can be formed after internal aluminum ions and magnesium ions are combusted at high temperature, then the flame retardance of the carbon layer is improved, and the flame-retardant and fireproof effects of the plastic are improved.

The invention provides a live pig facility breeding hog house ammonia concentration detection system based on a neural network, and the system comprises a hog house environment parameter collection module and a hog house ammonia concentration detection module which are connected in sequence. Wherein the hog house environment parameter acquisition module is used for acquiring ammonia gas information, wind speed information, temperature information and humidity information in a hog house; and the pig house ammonia gas correction fusion sub-module is used for correcting the predicted ammonia gas concentration based on the predicted wind speed, the predicted humidity and the predicted temperature. The method analyzes the influence of pig house ammonia gas on pig health, considers the coupling effect of multiple environment parameters of the pig house, provides a temperature, humidity and wind speed correction fusion method of the pig house ammonia gas concentration, and aims to improve the detection precision of the pig house ammonia gas concentration of pig facility breeding.

The invention discloses a thermal field coupling dynamically-adjustable ammonia cracker and a control method, the thermal field coupling dynamically-adjustable ammonia cracker comprises an ammonia preheating device and an ammonia cracking reaction device, the ammonia preheating device comprises a combustion preheating chamber and a controllable pure ammonia burner, the combustion preheating chamber comprises a combustion cavity and an ammonia preheating cavity, the ammonia preheating cavity surrounds the periphery of the combustion cavity, and the controllable pure ammonia burner is arranged in the combustion cavity. The controllable pure ammonia burner comprises an ammonia fuel spray head and an air rotational flow assembly, the air rotational flow assembly comprises a plurality of rotational flow fan blades, the distances between the rotational flow fan blades in the circumferential direction are adjustable, the ammonia cracking reaction device comprises a tail gas inlet pipe, a mixed gas heat exchange cavity and an ammonia cracking reaction pipe, and the ammonia cracking reaction pipe is arranged in the mixed gas heat exchange cavity; an inlet of the mixed gas heat exchange cavity is communicated with the tail gas inlet pipe and the combustion cavity at the same time, the ammonia cracking reaction pipe is communicated with the ammonia preheating cavity, and an ammonia cracking catalyst is arranged in the ammonia cracking reaction pipe. The requirements for the high ammonia cracking rate and the high energy utilization efficiency are met, and meanwhile the hydrogen production amount can be dynamically adjusted according to the hydrogen requirement amount of the ammonia internal combustion engine.

The invention belongs to the technical field of electronic components, and discloses an ammonia gas sensor based on layered MoTe2 and TiO2 heterojunction, and a preparation process and application thereof. The ammonia gas sensor comprises a gas sensitive material and an interdigital electrode plate, wherein the surface of the interdigital electrode plate is coated with the gas sensitive material by adopting a dispensing method. The gas sensitive material is a nano composite material formed by molybdenum ditelluride and titanium dioxide. The method is simple in production process and low in cost, and the obtained gas-sensitive material has relatively high sensitivity, selectivity and rapid recovery to ammonia gas at room temperature and a detection lower limit as low as ppb level. According to the present invention, the excellent ammonia gas detection performance at the room temperature is provided so as to hopefully provide good prospects in the application of the new generation portable low-power-consumption room temperature ammonia gas sensor.

Provided is a small, simple hydrogen gas production device that allows gas produced in sequence using liquefied ammonia as a raw material to flow downstream without stagnation, does not require a separate pressure reducer for creating a pressure difference between the upstream and downstream sides of a separation membrane, and can remove nitrogen without using a high-pressure compressor, thereby consuming less power. [Solution] The hydrogen gas production device of the embodiment includes a tank of liquefied ammonia, a primary purification section and a secondary purification section that remove residual ammonia gas and nitrogen gas from decomposition gas of ammonia gas, and a pressure reducer. The separation membrane of the purification section from which nitrogen gas is removed separates hydrogen gas from nitrogen gas by the differential pressure between the upstream and downstream sides of the separation membrane. The pressure reducer is provided in a purified gas line through which hydrogen gas flows, and reduces the pressure on the upstream side of the pressure reducer. The differential pressure is formed as a part of the pressure difference formed between the tank internal pressure and the pressure on the upstream side of the pressure reducer.

The invention provides an iron phosphate wastewater treatment method and system, and belongs to the field of wastewater treatment.The iron phosphate wastewater treatment method comprises the steps that ammonium sulfate in wastewater is separated out through an MVR evaporation device, and then primary precipitation is conducted by adjusting the pH value to remove heavy metal impurities; then adding ammonia water for secondary precipitation and filtration to further remove phosphate radical impurities; then adding lime to carry out three-stage precipitation filtration to remove fluorine element; and finally, carrying out ammonia removal treatment on the obtained tail liquid, returning to the first step of working procedure, and carrying out repeated treatment again. Wherein the generated ammonia gas is used for secondary precipitation filtration; the mode of directly recovering resources in the iron phosphate wastewater through the cooperation of a high-temperature treatment method and a fractional precipitation method is beneficial to avoiding heat value waste, and the energy consumption cost for subsequent treatment of the tail liquid and the use cost of the reagent dosage in a tail gas recovery system are reduced.

The invention discloses a tail gas self-treatment low-emission zero-carbon ammonia hydrogen engine system and a control method, and the tail gas self-treatment low-emission zero-carbon ammonia hydrogen engine system comprises a pure ammonia flameless combustion ammonia decomposition system, a NOx decomposition system, an ammonia hydrogen engine, an air source and an ammonia gas source. The NOx decomposition system utilizes a thermal decomposition technology of nitrogen oxide to realize the reutilization of waste heat of combustion tail gas of the pure ammonia hedging type flameless combustion furnace and decompose the nitrogen oxide in the engine tail gas into nitric oxide, and the ammonia-hydrogen engine utilizes the combustion of the engine to do work, so that the tail gas of the pure ammonia hedging type flameless combustion furnace can be recycled, and the nitrogen oxide in the tail gas of the pure ammonia hedging type flameless combustion furnace can be recycled. Heat utilization of ammonia gas is achieved, and combustion-supporting tail gas needed by the pure ammonia opposite-flushing type flameless combustion furnace is generated.

The invention discloses an internal coupling energy-saving atomization ammonia water recovery process for high-concentration ammonia-nitrogen wastewater, and particularly relates to the technical field of wastewater treatment. The process comprises the steps that firstly, ammonia gas and water vapor mixed gas generated after high-concentration ammonia-nitrogen wastewater is rectified through a deamination tower enters the absorption-condensation integrated ammonia recoverer through a pipeline, an internal coupling energy-saving atomization energy-saving device of the integrated ammonia recoverer can generate superfine water mist, and after being combined, ammonia-containing vapor and the superfine water mist are subjected to rapid heat exchange; meanwhile, due to the characteristic that ammonia is extremely easy to dissolve in water, ammonia gas molecules can be combined with liquefied water vapor water molecules, and dissolving heat of the water vapor water molecules can be quickly released to form ammonia water. The method is simple in technological process and small in equipment investment and occupied area, a multi-stage absorption tower and a large amount of absorbent can be saved, the ammonia water is recycled in one step, the ammonia water is high in purity and controllable in concentration, almost no noncondensable gas is generated, and meanwhile steam energy consumption in the high-concentration ammonia-nitrogen wastewater deamination process can be saved.

The invention relates to the technical field of odor emission reduction, in particular to an odor emission reduction control system and method for livestock and poultry manure compositing. According to the system and the method, concentration changes of ammonia gas, hydrogen sulfide and volatile organic compounds and temperature and humidity data in a composting environment are accurately obtained through real-time performance and multi-parameter association of gas monitoring in the composting process; the method comprises the following steps of: calculating a diffusion path, a speed and a coverage area of gas in a compost body through finite element analysis, quantifying the distribution characteristics of gas concentration in space, optimizing the wind speed, the wind quantity and the layout of a ventilation system, and improving the ventilation efficiency. Pattern recognition is performed on compost environment gas emission data through the convolutional neural network, the turning frequency and the compost microenvironment are dynamically adjusted in combination with the gas concentration, a gas emission high-value area and a main guide source are accurately positioned, accurate control over compost fermentation odor emission is achieved, and the systematicness and refinement level of compost odor treatment is improved.

The invention belongs to the technical field of adsorbent preparation, and relates to a preparation method of a series of M-TCBB metal organic framework materials and application of the M-TCBB metal organic framework materials to adsorption of sulfur dioxide and ammonia gas. The preparation method comprises the following steps: dispersing [9, 9 '-dicarbazole]-3, 3', 6, 6 '-tetracarboxylic acid (H4TCBB) serving as an organic ligand and any one or more of yttrium salt, zirconium salt, hafnium salt, cerium salt and thorium salt in a solution according to a certain mass ratio, and carrying out solvothermal reaction at 100-120 DEG C; and after the reaction is finished, centrifuging to take a precipitate, washing and drying to obtain a series of M-TCBB metal organic framework materials. The series of M-TCBB metal organic framework materials prepared by the invention have relatively good adsorption acting force on sulfur dioxide and ammonia gas, and are high in adsorption cycle stability; under a humid condition, capture of sulfur dioxide and ammonia gas shows a humidity enhancement characteristic, namely, water vapor promotes enhancement of the adsorption capacity of sulfur dioxide and ammonia gas.

The invention relates to the technical field of control systems, in particular to an organic fertilizer fermentation intelligent aeration control system applying a nano-molecular film. The system comprises a data acquisition module, a delay analysis module, a gas analysis module and a controller adjusting module. Wherein the delay analysis module is used for determining the response delay of the aeration control system in combination with the change condition of temperature, the regulation hysteresis of the aeration control system and the activeness of microorganisms; the gas analysis module is used for determining the comprehensive gas exchange rate of the fermentation heap according to the humidity change condition, the carbon dioxide concentration and the ammonia gas concentration of the fermentation heap; the controller adjusting module is used for determining a correction coefficient of the aeration control system; and taking the proportional gain corrected by the correction coefficient as the proportional gain of a PID controller in the aeration control system. According to the invention, the response speed and the control precision of the aeration control system are effectively improved.

The invention belongs to the field of pollutant control, and particularly discloses a method and system for reducing generation of nitric oxide in the ammonia coal combustion process. The method specifically comprises the steps that liquid ammonia is gasified and then subjected to a thermocatalytic reaction to generate hydrogen and nitrogen, and ammonia-doped mixed gas is obtained; and judging whether the ratio of the concentration of hydrogen to the concentration of ammonia in the ammonia-doped mixed gas is greater than or equal to a threshold value or not, if so, discharging the ammonia-doped mixed gas for blending combustion, and if not, carrying out thermal catalytic reaction on the ammonia-doped mixed gas again. According to the method, the ratio of the concentration of hydrogen to the concentration of ammonia in the ammonia-doped mixed gas serves as the judgment standard for whether blending combustion can be conducted or not, the calculation formula of the threshold value is provided by balancing the influence of H2 and NH3 on NOx generation in the combustion process, then flexible regulation and control can be conducted on the raw material side according to the actual blending combustion condition, and the blending combustion efficiency is improved. The method effectively reduces the generation of nitrogen oxides in the ammonia coal combustion process, does not need to regulate and control the combustion side, does not affect the combustion stability and the boiler thermal efficiency, and has the advantages of simple operation and low cost.

The invention relates to the technical field of data processing, in particular to a sheep house-oriented environmental data monitoring method, device and system, and the method comprises the steps: obtaining a feed consumption sequence, an environmental temperature sequence, an infrared image data set and an ammonia concentration sequence of a plurality of historical excrement cleaning periods of a sheep house; the feed consumption degree of the sheep house at the latest moment in the latest excrement cleaning period is obtained; obtaining the influence degree of the temperature on the ammonia gas concentration value at the latest moment; the environment temperature fluctuation degree of the sheep house at the latest moment is obtained; according to the influence degree, the environment temperature fluctuation degree, the current ammonia concentration sequence and the stable class cluster, the real ammonia concentration value of the sheep house at the latest moment is obtained. Under the condition that the ammonia concentration of the sheep house is influenced by the environment temperature, the excrement accumulation amount of the sheep house can be accurately judged, excrement in the sheep house can be cleaned in time, and a proper breeding environment is created for the sheep house.

The invention discloses biomass boiler flue gas denitration equipment, which belongs to the field of flue gas treatment, and comprises a denitration cylinder, a flue gas inlet pipe is fixedly mounted on one side of the denitration cylinder, a filter screen is fixedly mounted on one side, close to the flue gas inlet pipe, of an inner cavity of the denitration cylinder, and the denitration cylinder further comprises a mixing assembly, a flue gas inlet pipe and a flue gas outlet pipe, the mixing assembly comprises a round frame rotationally mounted in an inner cavity of the denitration cylinder, retarding plates are uniformly and fixedly mounted on the round frame, round openings are uniformly formed in each group of retarding plates, circular ring holes are formed in the outer sides of each group of round openings, and each group of circular ring holes are formed in the adjacent retarding plates; according to the flue gas denitration device, the contact duration of flue gas and ammonia gas can be prolonged, the mixing effect of the flue gas and the ammonia gas can be improved, the situation that in the past, the flue gas is high in flow speed and difficult to fully mix and react with the ammonia gas, and consequently the ammonia escape phenomenon is caused can be avoided, the safety of the reaction of the flue gas and the ammonia gas can be effectively improved, and the flue gas denitration effect is improved.

An aluminum ash pickling device, which relates to the technical field of pickling devices, and comprises a pickling tower (1); and a filtering mechanism comprises a filter screen (8), a rotating shaft (9), a cleaning brush (10) and a rotating disc (11). By means of the filter screen (8), when an induced draft fan (4) drives waste gas to an air intake pipe (2), the waste gas is filtered by the filter screen (8) before entering the pickling tower (1); and under the action of the induced draft fan (4), wind power generated by the waste gas pushes the rotating disc (11) to drive the rotating shaft (9) to rotate, the rotating shaft (9) drives the cleaning brush (10) to rotate, the cleaning brush (10) agitates dust on a surface of the filter screen (8) during rotation, and at this point, the dust is loosened and comes off the surface of the filter screen (8), thus reducing the probability of the filter screen (8) being blocked, and preventing the circulation of the waste gas from being affected. When the wind power is small, the dust falls downward into a collecting box (12), a rotating cover (14) is rotated to release the connection between the rotating cover (14) and an external thread (13), and at this point, the dust accumulated in the collecting box (12) flows downward, such that a worker can collect the dust, thus preventing a small amount of aluminum ash from entering the pickling tower (1) along with the induced draft fan (4) and mixing with an agent which would otherwise impair the treatment efficiency of ammonia gas.

The invention relates to the technical field of electrolysis, in particular to a method for assisting electrolysis of a solid oxide electrolytic tank by ammonia gas, a symmetric electrode and a preparation method of the symmetric electrode. According to the method for assisting electrolysis of the solid oxide electrolytic tank with the ammonia gas, NH3 is introduced into the anode side of the solid oxide electrolytic tank for oxidation, CO2 and / or H2O is introduced into the cathode side of the solid oxide electrolytic tank, and the CO2 and / or H2O are / is electrolyzed. The symmetric electrode disclosed by the invention is applied to the solid oxide electrolytic tank, and a symmetric electrode catalyst is square fluorite type cerium oxide and high-entropy alloy which is separated out from doped cerium oxide in situ. The conventional dynamic slow oxygen evolution reaction on the SOEC anode is replaced by a favorable NH3 oxidation reaction, so that the oxygen partial pressure on the anode side can be reduced, the CO2 reduction reaction rate of the cathode is improved, and meanwhile, the power demand of CO2 electroreduction is greatly reduced.

The invention provides an epitaxial growth process for improving doping uniformity of n-type doped silicon carbide, and relates to the technical field of semiconductors. The method is based on a chemical vapor deposition growth technology; 11 to 20 gt; the silicon carbide epitaxial growth is carried out by taking silicon carbide with a 4-degree silicon surface in the direction as a substrate, taking trichlorosilane (TCS) and ethylene (C2H4) as growth sources and taking ammonia gas (NH3) as a doping source. Ammonia gas is adopted as an n-type dopant, the decomposition efficiency of the n-type dopant is close to 100% at the temperature of 700 DEG C or above, and the energy of N-H bond breakage of ammonia gas molecules is 390 KJ / mo which is far lower than 946 KJ / mo needed by N-N bond breakage of nitrogen molecules. Therefore, compared with a traditional doping source such as nitrogen, the ammonia gas has higher doping efficiency, residues of excessive nitrogen-containing precursors in the reaction chamber can be reduced, the memory effect is reduced, and thus more excellent in-chip uniformity and stable inter-chip repeatability of the epitaxial wafer are obtained. The selection range of the doping source is widened, the accurate control of the doping concentration is realized, and the stability of the doping concentration in the continuous growth process is improved.

The invention discloses a device for continuously preparing adiponitrile from adipic acid by supergravity, which is characterized in that a specially designed gas-in-liquid mixed feeding mode is firstly adopted, so that liquid of a falling film assembly is uniformly dispersed as far as possible, and meanwhile, by accurately controlling the reaction temperature in the falling film assembly, side reactions are reduced; secondly, the contact mode of gas and liquid of the falling film assembly is changed, the gas-liquid countercurrent contact mode is changed into gas-liquid parallel flow, and the liquid is prevented from being stopped in a pipeline through the gas-liquid parallel flow; and finally, mixing and mass and heat transfer effects of adipic acid and ammonia molecules in the reaction process are enhanced by using a supergravity assembly, so that adipic acid decomposition and coking in a bubbling section of a traditional reactor are effectively slowed down, the reaction efficiency and the product yield are improved, and side reactions are reduced.

The invention discloses a turbulent burner for mixed combustion of ammonia and coal. The turbulent burner comprises a first cylinder, a second cylinder and a third cylinder, a pulverized coal airflow channel is formed in an inner cavity of the first cylinder; an ammonia gas channel is formed between the first cylinder and the second cylinder; a secondary air channel is formed between the second cylinder and the third cylinder; an inner cavity of the first cylinder is divided into four sections from front to back, namely a first steady flow section, a divergent section, a second steady flow section and a tapered section in sequence, the first steady flow section and the second steady flow section are cylindrical, the divergent section and the tapered section are circular truncated cone-shaped, and the diameter of the front end of the divergent section is large; the front end of the reducing section is small in diameter; a bluff body with a cylindrical front end and a circular truncated cone rear end is arranged in the first cylinder, one part of the bluff body rear end is located inside and outside the divergent section, and the other part is located in the first steady flow section; rotational flow blades are connected between the inner wall of the first cylinder and the outer wall of the blunt body; a plurality of guide plates are evenly distributed at the front end of the second cylinder in the circumferential direction. The method is suitable for the working condition with the small ammonia mixing proportion, and the transition effect of the coal-fired boiler from pure coal combustion to high-proportion ammonia-doped combustion is mainly achieved.

The invention discloses an SCR denitration ammonia spraying system, and relates to the technical field of SCR denitration, the SCR denitration ammonia spraying system comprises a plurality of ammonia spraying assemblies and a plurality of flow dividing assemblies in one-to-one correspondence with the ammonia spraying assemblies, the ammonia spraying assemblies are installed on a first supporting frame, and the flow dividing assemblies are installed on a second supporting frame. The spraying direction of the ammonia gas is in the same direction as the flowing direction of the flue gas, so that local non-uniformity caused by impact and turbulent flow between two gas flows is avoided, and the mixing effect of the ammonia gas and the flue gas is jointly improved by arranging the plurality of shunting assemblies.

The invention discloses a real-time monitoring system for ammonia gas in a composting process, which relates to the technical field of gas measurement and monitoring, and comprises an information acquisition module for acquiring data information in an ammonia ion concentration measurement process, including electrochemical characteristic information and dynamic response characteristic information, obtaining a microbial activity coefficient when the microorganism decomposes the fertilizer to generate ammonia gas in the composting process; the comprehensive analysis module is used for establishing a monitoring evaluation model based on a machine learning algorithm by combining the electrochemical characteristic information and the dynamic response characteristic information with the microbial activity coefficient, and generating a monitoring evaluation value; the hidden danger early warning module is used for comparing and analyzing the monitoring evaluation value with a preset monitoring evaluation threshold value, judging the ammonia gas measurement precision and sending out an early warning prompt for abnormal hidden dangers according to a comparison and analysis result; the problem of inaccurate ammonia monitoring in the composting process is solved, and the real-time ammonia monitoring efficiency and the ammonia measurement precision in the composting process are improved.

The invention provides a nitrogen-sulfur double-doped layered manganese dioxide material as well as a preparation method and application thereof, and relates to an electrochemical energy storage material. Thiourea is placed in a first temperature area, manganese dioxide is placed in a second temperature area (150-200 DEG C), the thiourea is decomposed into hydrogen sulfide and ammonia gas in the first temperature area, the hydrogen sulfide and the ammonia gas are carried by carrier gas to be conveyed into the second temperature area to be subjected to doping reaction with the manganese dioxide, and the nitrogen-sulfur double-doped layered manganese dioxide material is obtained. The manganese dioxide is delta-phase layered manganese dioxide. Nitrogen and sulfur elements are doped into manganese dioxide through a low-temperature roasting method, the intrinsic conductivity and structural stability of manganese dioxide are improved, the material has high reversible capacity, and the formation of part of oxygen vacancies can help the material expose active sites, so that the overall capacity of the material is improved. The nitrogen-sulfur double-doped layered manganese dioxide material is used as a positive electrode material for a zinc ion battery, and has excellent electrochemical performance.

The invention relates to the technical field of boiler tail gas treatment, in particular to a boiler tail gas multi-pollutant cooperative control system based on linkage of a PLC and a frequency converter. The system comprises a data acquisition module, a PLC control module and a collaborative optimization module. Concentration data of pollutants in boiler tail gas are collected in real time through the data collection module, the boiler tail gas is introduced into the desulfurization and denitrification tower through the inlet induced draft fan, the PLC control module sets driving rules of the inlet induced draft fan through a logic controller of a PLC, the operation frequency of the inlet induced draft fan is dynamically adjusted according to the content of the pollutants in the boiler tail gas, and the desulfurization and denitrification effect of the boiler tail gas is improved. And the collaborative optimization module returns the tail gas which does not reach the standard to a boiler for secondary desulfurization and denitrification, the tail gas which reaches the standard is introduced into a dust removal tower through an outlet induced draft fan, the electric dust removal voltage is adjusted according to the content of ammonia gas in the tail gas, and linkage control over desulfurization, denitrification and dust removal is achieved by taking the minimum operation cost as the target and adopting a genetic algorithm.

The embodiment of the invention provides a leakage risk assessment method, device and equipment for an ammonia fuel power container ship. The assessment method comprises the following steps: acquiring multi-source parameter data of the ammonia fuel power container ship; inputting the multi-source parameter data into a joint coding layer of an ammonia gas concentration distribution prediction model for feature coding to obtain a coding feature vector; inputting the coding feature vector into a decoding network layer of an ammonia concentration distribution prediction model for vector mapping to obtain a three-dimensional ammonia concentration distribution field vector; and obtaining an ammonia fuel leakage risk assessment result according to the ammonia concentration distribution field vector. According to the embodiment of the invention, the ammonia concentration values at different spatial positions can be intuitively presented through three-dimensional ammonia concentration distribution field vector output, and the quantitative evaluation efficiency and decision reliability of the ammonia fuel leakage risk are remarkably improved.

The invention discloses a system and a method for rapidly and efficiently decomposing ammonia to produce hydrogen through cooperation of plasma catalysis. Ammonia gas enters the normal-pressure arc temperature plasma reactor to form rotating gas flow, is ionized into high-activity plasma under the driving of high-voltage electricity, and is pushed by the rotating gas flow and a gradually-shrinking opening of the reactor to form large-area three-dimensional plasma jet flow, and jet flow gas upwards flows into a coaxial upper-layer catalytic area and downwards flows into a coaxial outer-layer catalytic area due to the limitation of a wall surface; and the reacted gas flows out from a gas guide hole at the lower part. Ammonia gas is firstly activated and pre-decomposed in the arc temperature plasma area and then secondarily decomposed in the coaxial catalytic area, heat of the temperature plasma area directly acts on the catalytic area, and external heating is not needed. The whole structure is that the temperature plasma area and the catalytic area are coaxially integrated, so that the waste heat utilization rate and the reaction energy efficiency are improved. The system is simple and compact in structure, can flexibly supply hydrogen in a distributed manner, is high in energy density, and can be directly driven by wind, light and green electricity.

The invention discloses a BOE waste liquid resource reutilization method, which comprises: 1, converting silicon ions in a BOE waste liquid into SiO2 precipitate, removing the SiO2 precipitate, and converting fluorine ions in the BOE waste liquid into NH4F; 2, fluorine ions in the filtrate obtained in the step 1 are converted into CaF2, and ammonium ions in the filtrate obtained in the step 1 are converted into ammonia water; 3, ammonia gas in the filtrate obtained in the step 2 escapes, CaF2 is separated after the filtrate is cooled, the separated CaF2 is used for producing HF, and the HF is used for preparing BOE for recycling; 4, directly feeding the filtrate obtained in the step 3 to sewage treatment; 5, the ammonia gas obtained in the step 3 is used for silicon removal and BOE preparation in the step 1 for recycling. According to the method, high-purity CaF2 can be obtained with high yield, NH4 < + > in BOE can be recycled, and the whole process is high in resource utilization rate and high in fluorine ion recovery rate.

The invention discloses an efficient ammonia decomposition hydrogen production system based on the Joule heating effect and belongs to the technical field of clean energy. The system is composed of an ammonia supply module, a Joule thermally driven ammonia decomposition reaction module and a hydrogenation module. Wherein the ammonia supply module consists of a liquid ammonia storage device, a vaporizing chamber and an ammonia gas storage device; the Joule thermally-driven ammonia decomposition reaction module consists of an ammonia gas flow control valve, a reaction tube gas inlet, a reaction tube gas outlet, a Joule heating electrode tip, a direct-current power supply, a temperature sensor, a thermal insulation layer, a reaction tube, a catalyst and a stainless steel alligator clip; the hydrogenation module is composed of a hydrogen purifying and drying device, a hydrogen compressor, a hydrogen cooling unit, a high-pressure hydrogen storage tank, a hydrogen flow control valve and a hydrogenation machine. The whole process can be started and stably output within one second, the conversion rate and the electrothermal conversion efficiency both exceed 90%, low energy consumption, quick response and safe operation are achieved, the system is particularly suitable for hydrogen refueling station construction in a future hydrogen energy network, and green hydrogen energy economy development is promoted.