169 results about "Ammonia storage" patented technology

The invention discloses an electricity-hydrogen-ammonia coupling system configuration method and system, and relates to the technical field of electricity-hydrogen-ammonia coupling systems, and the method comprises the steps: sequentially carrying out two-stage clustering according to renewable energy source daily output data, electrothermal hydrogen daily load data and daily net energy, and generating a typical daily scene and a clustering index; performing electric hydrogen ammonia energy storage collaborative simulation operation on all the typical day scenes, and reconstructing a year-round energy storage state based on a clustering index according to the variation of the hydrogen storage amount and the ammonia storage amount after simulation operation of each typical day scene; and taking the minimum annual total cost formed by the simulation operation cost, the capacity configuration cost and the hydrogen safety risk cost as an optimization target to obtain an optimal equipment capacity configuration scheme. While the calculation cost is reduced and the solving efficiency is improved, the time sequence connection characteristic and the energy storage characteristic of different long-time energy storage are kept, and multi-time-scale energy transfer is realized, so that the applicability and the economical efficiency of a planning scheme are improved.

The invention relates to the field of nitriding furnaces, in particular to an ammonia gas circulating system of a nitriding furnace, which comprises a furnace body, a furnace cover and a gas inlet mechanism, the furnace body is provided with a containing cavity, the furnace cover is connected to the furnace body and covers a cavity opening of the containing cavity, and the gas inlet mechanism comprises a gas inlet main pipe, an annular pipeline, an electromagnetic valve and a detection assembly, one end of the gas inlet main pipe is connected to the outer wall of the annular pipeline, the other end of the gas inlet main pipe is used for being connected with an external ammonia gas storage mechanism, the electromagnetic valves are connected to the annular pipeline, the other ends of the electromagnetic valves extend into the furnace body, the electromagnetic valves are circumferentially distributed around the axis of the annular pipeline at intervals, and the detection assembly is embedded in the containing cavity to control the electromagnetic valves to be opened and closed. External ammonia gas is conveyed to the annular pipeline through the gas inlet main pipe, then the ammonia gas is input into the furnace body through the multiple electromagnetic valves distributed around the axis of the annular pipeline in the circumferential direction at intervals, meanwhile, the detection assembly controls the electromagnetic valves to be opened and closed through the pressure intensity in the containing cavity, the ammonia gas introduced into the nitriding furnace is evenly distributed to all positions in the nitriding furnace, and the uniform nitriding effect is improved.

The invention belongs to the technical field of environmental protection, and particularly relates to a treatment method for recycling cement kiln flue gas mineralization solid waste gypsum coupling escape ammonia, which comprises the following steps: conveying original flue gas to a deamination tower, feeding an ammonia-containing ammonium sulfate solution output by a mineralization reactor into the deamination tower for deamination, washing the flue gas by using the ammonia-containing ammonium sulfate solution, and volatilizing ammonia in the process, therefore, the flue gas is desulfurized; the desulfurized ammonia-containing desulfurized flue gas is input into the decarburization tower to be subjected to water washing treatment, the ammonia water storage tank inputs ammonia water into the liquid storage area, the ammonia water in the liquid storage area is circularly conveyed to the decarburization area to be used for carrying out water washing on the ammonia-containing desulfurized flue gas to realize decarburization, and the decarburized flue gas enters the deamination area to be subjected to two-stage water washing treatment; the ammonia-containing decarburized flue gas subjected to two-stage water washing is input into an acid washing tower for acid washing, and ammonia in the flue gas is further removed; meanwhile, the liquid storage area conveys the mixed solution to the mineralization reactor. According to the invention, the desulfurization, decarbonization and mineralization functions are realized, the problem of ammonia escape is effectively solved, and the energy consumption of evaporative crystallization is reduced.

The invention discloses hydrogen production equipment and a hydrogen production method based on sodium-catalyzed ammonia cracking, and the hydrogen production equipment comprises a reactor which is a pressure-bearing shell and tube type heat exchange reactor and is internally provided with a plurality of heat exchange tubes filled with a sodium-based catalyst, two ends of the reactor are sealed through a first sealing cover and a second sealing cover, and the first sealing cover is connected with an ammonia storage tank; the second sealing cover is connected with a gas purification separator; the ammonia storage tank is used for storing liquid ammonia and supplying ammonia to the reactor through the booster pump; the gas purification separator is used for separating unreacted ammonia, nitrogen and hydrogen from emissions of the reactor; the temperature control system controls the reaction temperature by adjusting the flow of the heat source gas entering the reactor. A sodium-based catalyst is adopted, and in-situ regeneration of the catalyst is realized through a dynamic circular reaction mechanism; sodium serves as an intermediate medium and is continuously consumed and regenerated in the ammonia cracking process, external supplementation is not needed, the reaction path specificity is high, the byproduct generation rate is low, and the heat transfer efficiency is improved through the design of the countercurrent shell and tube type heat exchange reactor.

This invention discloses a deep peak-shaving system and method for thermal power plants based on ammonia cracking hydrogen production coupled with deep utilization of waste heat. It relates to the field of thermal power generation and includes a gasifier, an ammonia cracking hydrogen production unit, a cooler, a separator, an ammonia storage tank, an ammonia-hydrogen storage system, a peak-shaving burner, and a boiler. This invention utilizes the waste heat of the thermal power boiler to vaporize liquid ammonia into gaseous ammonia. The ammonia cracking hydrogen production unit uses medium- and high-temperature waste heat or electrical energy, along with an ammonia cracking catalyst, to crack a portion of the ammonia gas, producing an ammonia-hydrogen-nitrogen mixture. This mixture is then separated by a separator to obtain an ammonia-hydrogen mixture. The ammonia-hydrogen mixture is mixed with ammonia gas to produce mixtures with different ammonia-hydrogen ratios, which are stored in the ammonia-hydrogen storage tanks. The ammonia-hydrogen ratio used in the burner is adjusted according to different loads to maintain stable combustion. This invention can maintain stable combustion in the burner under low loads, achieving deep peak-shaving of thermal power plants, and can also deeply utilize waste heat from thermal power plants, improving power generation efficiency.

The invention provides a ternary precursor wastewater deamination method and device, and belongs to the technical field of wastewater treatment.The ternary precursor wastewater deamination device comprises a deamination system and an ammonia liquefaction system, the deamination system comprises a supergravity bed, a liquid inlet of the supergravity bed is connected with a wastewater preheating system, and a liquid outlet of the supergravity bed is connected with an ammonia liquefaction system; the liquid outlet is connected with the reboiling system, and the gas outlet is connected with the condensing system. The method comprises the following steps: adjusting the pH value of a wastewater raw material, heating, rectifying the heated wastewater raw material through a supergravity bed, reboiling the separated liquid, refluxing into the supergravity bed, condensing the separated gas, carrying out gas-liquid separation, and compressing and condensing the separated ammonia gas to obtain liquid ammonia; and the separated liquid flows back into the supergravity bed or enters the stronger ammonia water storage tank to be stored. The ammonia concentration of the deaminated wastewater is lower than 10mg / L, and concentrated ammonia water with the mass concentration of 15-20% and liquid ammonia with the purity of more than 99% can be recovered. Recycled stronger ammonia water and liquid ammonia can be reused for production.

The application discloses a low-NOx ammonia fuel combustion system based on plasma combustion support X The generated staged ammonia gas combustion system comprises a high-frequency high-voltage power supply, a dielectric barrier plasma generator, a gas distribution system (a blower and an ammonia storage tank), a combustion chamber and a swirler; the dielectric barrier plasma generator comprises a high-voltage electrode, an insulating medium, a swirler and a ground electrode; and the gas distribution system comprises a blower and an ammonia storage tank. The application utilizes dielectric barrier to generate ammonia gas plasma discharge, reduces the difficulty of ammonia gas combustion and improves the stability of ammonia gas combustion; utilizes the swirler to generate rotating airflow and improves the combustion efficiency; utilizes ammonia gas staged combustion to further reduce NOx emission; and the ideal staged ratio is that the volume ratio of ammonia gas plasma to side wall ammonia gas is 20% (10%-30%), so that the ammonia gas plasma can be fully discharged, and the ammonia sprayed from the side wall can also be fully combusted.

A multi-fuel vehicle has a cracker 110 that receives ammonia from an ammonia storage container 204, cracks it to form a cracked gas comprising hydrogen gas and nitrogen gas, and conveys the hydrogen gas to an engine 208 of the vehicle. An energy source, such as a battery 216, traction motor 212, alternator 210 or exhaust system 112, provides energy to the cracker. A controller (102, fig 1) receives a predefined route for the vehicle, predicts a future load demand of the vehicle based on the predefined route, and adjusts a flow rate of ammonia delivered to the cracker based on the future load demand. A method for operating an ammonia cracker in a vehicle also comprises combusting, by the engine, a cracked gas mixture comprising hydrogen gas. The predefined route may include an indication of a grade and a speed. The vehicle may have a hydrogen storage container 206 intermediate the cracker and the engine.

The application provides a liquid ammonia storage tank cleaning device and relates to the technical field of liquid ammonia storage.The device comprises a clamping mechanism for clamping a tank body, a mounting rack and a base frame, the clamping mechanism and the mounting rack are both mounted on the base frame, the mounting rack is provided with an extension mechanism, the end of the extension mechanism is rotatably provided with a frame body, a plurality of rotating frames are rotatably arranged on the frame body, and cleaning strips are arranged on the rotating frames; the rotating frames can rotate to push the cleaning strips close to the inner wall of the tank body, and the cleaning strips can deform along with the contour of the tank body and adhere to the inner wall of the tank body; the cleaning strips can be driven to be inclined or transversely arranged in the tank body by a driver; the rotating frames can rotate relative to the frame body and push the cleaning strips to move to the inner wall of the tank body and adhere to the inner wall of the tank body; the flexibility of the arc-shaped frame can make the cleaning strips deform when adhering to the inner wall of the tank body, so that the tank body is cleaned; the device can clean different vertical pipes and improve convenience for cleaning vertical, spherical and columnar tanks.

The present application relates to ammonia storage tank technical field, specifically to a kind of ammonia storage integrated tank device, including tank body and fixed assembly, tank body is placed on fixed assembly, the fixed assembly includes base and fixed mounting frame on base, two supporting sliding plates are slidably inserted in the mounting frame, and supporting sliding plate is fixedly connected with spring between mounting frame, by setting fixed assembly and clamping piece, the fixation of tank body and the fixation of remaining components can be completed while pushing tank body, while ensuring the stability of tank body, a large number of operation steps are reduced, the convenience of device use is improved, the cavity structure of clamping piece can help stabilize tank body temperature, absorb tank body temperature, while using cage cover piece and clamping piece in cooperation, the sealing of tank body pipe opening can be increased, and the storage safety of tank body is improved.

A system for recovering ammonia from an endothermic reaction in a subsurface formation may comprise a subsurface formation; a wellbore fluidly connected to the subsurface formation; a tubing string positioned within the wellbore, wherein the wellbore and an exterior of the tubing string together define a wellbore annulus; a wellhead comprising one or more injection lines and one or more return lines fluidly connected to the wellbore; one or more fluid injection pumps configured to supply an endothermic fluid composition to the subsurface formation through the one or more injection lines and the tubing string, the endothermic fluid composition operable to form ammonia when reacted; and one or more ammonia retention vessels fluidly connected to the return lines for receiving the ammonia through the wellbore annulus.

This application relates to an aftertreatment temperature control method, system, and vehicle. The aftertreatment temperature control method includes: determining the ammonia storage capacity of the catalytic converter and the particulate matter capture mass of the particulate matter trap; determining the aftertreatment inlet temperature of the aftertreatment equipment; determining the aftertreatment target temperature based on the aftertreatment inlet temperature, the ammonia storage capacity, and the particulate matter capture mass; and adjusting the aftertreatment temperature of the engine aftertreatment equipment based on the aftertreatment inlet temperature and the aftertreatment target temperature. This application comprehensively considers the aftertreatment inlet temperature, the ammonia storage capacity of the catalytic converter, and the particulate matter capture mass of the particulate matter trap to adjust the aftertreatment temperature of the aftertreatment equipment, achieving multi-factor coordinated control of the aftertreatment temperature, which is beneficial to improving aftertreatment capacity and reducing nitrogen oxide and particulate matter emissions.

A method and apparatus is provided for producing hydrogen in an steam methane reformer (SMR) via ammonia cracking, wherein the SMR can include a furnace (50), a pressure swing adsorption (PSA) unit, waste heat recovery sections (10, 90), and a water scrubber, wherein the furnace (50) has a plurality of SMR tubes and a plurality7 of burners. The method can include the steps of: withdrawing ammonia from an ammonia storage vessel; preheating the ammonia to form a warm ammonia stream; introducing the warm ammonia stream into the SMR tubes of the furnace (50) under conditions effective for catalytically cracking the ammonia, thereby forming a crude stream (53) comprising hydrogen, nitrogen, and unreacted ammonia; treating the crude stream (53) with a water wash in order to remove the unreacted ammonia from the crude stream (53), thereby resulting in an aqueous ammonia stream and a washed crude stream (103); and introducing the washed crude stream (103) into the PSA unit to produce a hydrogen product stream and a PSA off-gas.

The utility model discloses an ammonia leakage safety treatment system, which comprises an ammonia storage cabinet, an ammonia storage container, an ammonia leakage detection device, an ammonia leakage detection device and an ammonia leakage detection device, the spraying module comprises a liquid storage tank and a spraying head which are communicated with each other, and absorption liquid is stored in the liquid storage tank; wherein the absorption liquid comprises sodium bicarbonate; the monitoring module comprises an ammonia concentration sensor and a pH value sensor which are respectively arranged in the ammonia storage cabinet; the control module is respectively connected with the spraying module and the monitoring module; the control module is used for receiving information, collected by the ammonia concentration sensor, of ammonia leaked from the ammonia storage cabinet and controlling the spraying head to spray absorption liquid; and the controller is used for receiving the pH value information of the absorption liquid after ammonia gas absorption collected by the pH value sensor, and controlling the spray header to stop spraying the absorption liquid. The ammonia leakage treatment device solves the problems of waste of ammonia absorption liquid, low treatment efficiency and high treatment cost in the existing ammonia leakage treatment.

The application provides a method, device, storage medium and electronic equipment for preventing N2O generation. The method comprises: determining whether the real-time ammonia storage in the front-stage SCR is greater than the ammonia storage threshold when the temperature rise rate of the front-stage SCR is greater than the temperature rise rate threshold; determining whether the temperature of the DOC is in the preset temperature range when the real-time ammonia storage in the front-stage SCR is greater than the ammonia storage threshold; reducing the injection amount of the urea nozzle upstream of the front-stage SCR, or stopping the urea nozzle injection, or controlling the urea nozzle to delay injection, to prevent N2O generation due to the leakage of the front-stage SCR when the temperature of the DOC is in the preset temperature range and the temperature of the rear-stage SCR is greater than the temperature threshold. Based on the double-SCR aftertreatment system, the urea injection of the front-stage SCR is logically controlled to prevent NH3 leakage of the front-stage SCR caused by the sudden increase of the engine temperature, and the problem that NH3 is oxidized into N2O in the DOC is solved.

The utility model belongs to the technical field of ammonia water preparation, and particularly relates to a multi-stage mixing device for preparing ammonia water by mixing liquid ammonia and water, which comprises a bottom plate, and an ammonia storage tank, a water storage tank and a return tank are sequentially arranged on the rear side of the top of the bottom plate from right to left. A jet mixer, a static mixer and a U-shaped pipe are sequentially arranged in the middle of the top side of the bottom plate from right to left, the jet mixer realizes high-speed hedging and mixing of liquid ammonia and water by utilizing a Venturi effect, and the static mixer further enhances turbulence disturbance through an internal spiral shunting element; the S-shaped structure of the U-shaped pipe prolongs the mixing path and ensures full contact of the two phases, meanwhile, the spiral cooling flow channel of the first cooling sleeve rapidly takes away reaction heat by increasing the contact area of a cooling medium and the mixing pipe, the partition plate of the second cooling sleeve divides the cooling cavity into two sections, and the cooling effect is good. And cooling water is guided to form vortex flow through the spiral guide vanes, so that the heat transfer efficiency is enhanced.

The invention provides an ammonia fuel multi-element utilization system of an ammonia-rich combustion engine and a control method of the ammonia fuel multi-element utilization system. The ammonia fuel multi-element utilization system comprises an engine unit, a post-processing unit, a hydrogen production unit, an ammonia storage tank and a hydrogen storage tank, the tail gas of the engine unit is connected with the post-treatment unit and is used for separating and extracting ammonia gas from the tail gas of the engine unit; the hydrogen production unit receives the ammonia gas prepared by the post-treatment unit and prepares hydrogen or ammonia-hydrogen mixed gas through ammonia gas cracking; the third ammonia branch and the fourth ammonia branch are controlled to be opened or closed through the electromagnetic valve so that ammonia can be selectively sprayed into the main combustion chamber in the subsequent stage, and the first hydrogen branch and the second hydrogen branch are controlled to be opened or closed through the electromagnetic valve so that hydrogen or ammonia-hydrogen mixed gas can be selectively introduced into the jet ignition device and / or the gas inlet channel.

The present disclosure provides a control method for high-pressure direct injection of liquid ammonia and an ammonia fuel supply system, the ammonia fuel supply system comprising a liquid ammonia storage module and a high-pressure injection module, the liquid ammonia storage module comprising a nitrogen source of a first air pressure, a liquid ammonia storage tank of a second air pressure, and a liquid ammonia buffer tank of a third air pressure; the control method comprises: using a liquid level gauge on the liquid ammonia buffer tank to measure the liquid level of the liquid ammonia in the liquid ammonia buffer tank in real time; when the liquid level does not meet a preset height range, controlling the working state of the solenoid valve to adjust the injection amount of nitrogen in the nitrogen source into the liquid ammonia storage tank, the injection amount of nitrogen can change the pressure difference between the liquid ammonia storage tank and the liquid ammonia buffer tank, so as to change the speed at which the liquid ammonia in the liquid ammonia storage tank is injected into the liquid ammonia buffer tank; when the liquid level meets the preset height range, pumping the liquid ammonia in the liquid ammonia buffer tank to the high-pressure injection module according to a preset supply amount; the high-pressure injection module injects the preset supply amount of liquid ammonia into the engine cylinder for combustion and work.

The utility model relates to a kind of liquid ammonia meterable conveying devices, it includes: industrial ammonia storage tank, the industrial ammonia storage tank has industrial gas phase mouth and industrial liquid phase mouth;Vehicle-mounted liquid ammonia tank, the vehicle-mounted liquid ammonia tank has vehicle-mounted gas phase mouth and vehicle-mounted liquid phase mouth;Liquid ammonia delivery component, the liquid ammonia delivery component includes one end with the industrial liquid phase mouth is connected and the other end with the vehicle-mounted liquid phase mouth is connected liquid ammonia delivery pipe, liquid ammonia pump is installed on the liquid ammonia delivery pipe, pressure transmitter one is installed on the liquid ammonia delivery pipe and located in the liquid ammonia pump upstream, pressure transmitter three is installed on the liquid ammonia delivery pipe and located in the liquid ammonia pump downstream, check valve is installed on the liquid ammonia delivery pipe and located between the liquid ammonia pump and the pressure transmitter three and flowmeter is installed on the liquid ammonia delivery pipe and located between the check valve and the pressure transmitter three.Thus can improve filling efficiency, and liquid ammonia utilization is higher.

The invention provides a urea consumption control method, a urea consumption control device, urea consumption control equipment and a storage medium. The urea consumption control method comprises the following steps: determining a first aging state coefficient of an SCR carrier based on all temperature values and temperature retention time; determining a second aging state coefficient of the SCR carrier based on the whole vehicle mileage and the first map table; weighting the first aging state coefficient and the second aging state coefficient to obtain a third aging state coefficient; the smaller value in the first aging state coefficient and the third aging state coefficient is determined as a target aging state coefficient, the ammonia storage capacity of the SCR carrier considering the aging influence is determined based on the target aging state coefficient, an ammonia storage target value is determined according to carrier ammonia storage, and the urea injection amount is adjusted according to the ammonia storage target value. According to the method, the influence of the vehicle driving mileage on aging is considered, the new aging state coefficient is determined, finally, calculation of the ammonia storage capacity of the SCR carrier is corrected based on the aging state coefficient, the urea injection amount is adjusted, and the effect of reducing the urea consumption in the early stage of the vehicle service life is achieved.

The invention discloses a highway self-consistent energy system based on ammonia energy storage and an operation method of the highway self-consistent energy system, and belongs to the technical field of comprehensive energy systems. The system comprises an energy supply part, an electricity-hydrogen conversion unit, an ammonia energy storage unit, a multi-energy flow load part and a cascade energy utilization unit, the cascade energy utilization unit comprises a solid oxide fuel cell module, a micro gas turbine, a waste heat boiler and a heat storage tank; the solid oxide fuel cell module uses ammonia in an ammonia storage tank for first-stage power generation; high-temperature waste gas is guided into the micro gas turbine for second-stage power generation; medium and low temperature waste heat discharged by the micro gas turbine is captured by the waste heat boiler and stored in the heat storage tank; and heat energy in the heat storage tank is used for cold-state start preheating of the ammonia synthesis module in the ammonia energy storage unit by a start preheating loop. According to the system, energy gradient utilization of first-stage power generation, second-stage power generation and third-stage heat supply is achieved, the multi-energy flow load requirements of electricity, heat and hydrogen can be met at the same time, and the total energy efficiency, the self-consistent rate and the green low-carbon level of the system are greatly improved.

A high-efficiency ammonia reforming hydrogen production system utilizing waste heat from exhaust gas in the technical field of ammonia hydrogen production includes a hydrogen engine, an exhaust gas heating device, an ammonia decomposition hydrogen production device, a gas separation device, an exhaust gas treatment device, and an ammonia storage and supply device. The ammonia decomposition hydrogen production device includes a shell cover, an ammonia feed port, a heat medium inlet and outlet, a cylinder, a decomposition gas outlet pipe, a tube sheet, a reaction microtube, a catalyst, a decomposition gas return pipe, a guide plate, and a heat medium cavity shell. The exhaust gas from the hydrogen engine is heated to a relatively high temperature by a heating device and enters the ammonia decomposition device to provide energy for the decomposition reaction; ammonia is cracked into nitrogen and hydrogen in the ammonia decomposition device; the mixed gas is separated into hydrogen, nitrogen, and unreacted ammonia by a separation device, wherein hydrogen enters the hydrogen engine for combustion and ammonia returns to the ammonia storage and supply device; nitrogen and the exhaust gas after heat exchange enter the exhaust gas treatment device together. The present invention fully utilizes the waste heat from the engine exhaust gas and has the advantages of high energy utilization and simple implementation.

The utility model provides an ammonia water storage and sealing integrated tank device, which belongs to the technical field of chemical storage and comprises a sealing tank, a sealing cover, a storage tank, a water storage pipe, a drainage pipe, a water outlet pipe, a valve and a blow-down pipe, the sealing cover is mounted at the top of the sealing tank, handles are mounted at the left end and the right end of the upper end of the sealing cover, and the water storage tank is mounted on one side of the upper end of the sealing cover. By means of the U-shaped blow-down pipe, when materials are received through the liquid inlet, when the liquid level of a storage tank in the storage tank fluctuates, a large amount of ammonia is volatilized and escapes through the exhaust port, then the ammonia is buffered upwards in the blow-down pipe and then enters the water storage pipe, the U-shaped water storage pipe forms a water seal structure, and therefore the ammonia can be discharged out of the storage tank through the blow-down pipe. The overflow ammonia is blocked through the water storage pipe, so that the overflow ammonia can be absorbed by water, the ammonia smell is reduced, the water absorbing more ammonia in the water storage pipe can be directly discharged, and the overflow ammonia can be conveniently and regularly recycled.

This utility model discloses a cooling device for precipitation of phenylhydrazine hydrochloride mother liquor, comprising a refrigeration compressor, an oil separator fixedly connected to the output end of the refrigeration compressor, an evaporative condenser fixedly connected to the main outlet of the oil separator, an auxiliary ammonia storage tank fixedly connected to the outlet of the evaporative condenser via a first pipeline, an ammonia tank fixedly connected to the outlet of the auxiliary ammonia storage tank via a second pipeline, a shut-off valve installed at the connection between the ammonia tank and the second pipeline, and a thin-film evaporator fixedly connected to the outlet of the ammonia tank via a third pipeline. The main outlet of the thin-film evaporator is fixedly connected to a brine tank. Through the above structure, a buffer system is formed by the interlocking of the ammonia tank, the auxiliary ammonia storage tank, and the double shut-off valves, which can quickly isolate the ammonia source in case of emergency shutdown. In addition, the use of a closed-loop system with a low-temperature brine medium can effectively reduce energy consumption, thereby preventing the waste of cooling capacity caused by intermittent production.

The present application provides a kind of light weight liquid ammonia storage tank filling and discharging performance test platform, including light weight composite reinforced corrosion-resistant storage tank system, input or export gaseous ammonia to the storage tank to be tested by the ammonia supply and transportation system connected therewith;Light weight composite reinforced corrosion-resistant storage tank system is internally provided with multi-zone temperature monitoring system for real-time monitoring of temperature variation at different positions inside the storage tank;The light weight composite reinforced corrosion-resistant storage tank system is internally provided with internal gas circulation homogenization system for promoting gas flow inside the storage tank and improving temperature distribution;The control and safety protection system is used for real-time acquisition and regulation of storage tank internal pressure, liquid level, flow and temperature parameters, and safety pressure relief and protection under abnormal conditions;The present application can monitor and control the liquefaction process after ammonia is filled into the storage tank and the vaporization process when liquid ammonia is output, so as to test and analyze the temperature distribution, liquid level change, flow change and internal flow state during filling and discharging process.

The invention provides a system for producing deuterium-rich water by combining chemical exchange and liquid ammonia rectification, which comprises an ammonia A2 storage unit, an ammonia water exchange device, a liquid ammonia rectification device and a water ammonia exchange device, and three processes of ammonia water exchange, liquid ammonia rectification and water ammonia exchange are coupled and connected in series to construct a complete hydrogen isotope (deuterium) enrichment path. According to the path, deuterium is efficiently transferred from high-boiling-point raw water to a low-boiling-point ammonia medium through ammonia water exchange, low-energy-consumption and high-magnification deuterium enrichment is achieved in an N-stage rectifying tower through liquid ammonia rectification by means of the low-boiling-point characteristic of liquid ammonia, and finally high-deuteration-degree ammonia is efficiently converted back to high-deuteration-degree deuterium-enriched water through reverse water ammonia exchange. Cooperative transmission of the material flow and the isotope flow is obviously optimized, and directional and step-by-step enrichment of deuterium in the material flow process is achieved.

The application provides a nitrogen oxide conversion method and a vehicle, and relates to the technical field of automobiles. The method comprises the following steps: determining a first ammonia storage amount of a particulate matter trap, a content of stored ammonia and a consumption speed of ammonia during nitrogen oxide conversion; determining an initial demand amount of urea injection based on the first ammonia storage amount, the content of stored ammonia and the consumption speed of ammonia; determining a target demand amount of urea injection based on the first demand amount, a second demand amount and the initial demand amount; and instructing the vehicle to perform nitrogen oxide conversion based on the target demand amount of urea injection, so that the conversion efficiency of nitrogen oxide is stable during the nitrogen oxide conversion process, the actual urea injection amount reaches the requirement through the adjusted urea injection amount for the nitrogen oxide conversion, the stable nitrogen oxide conversion efficiency is realized, and thus the activation operation does not need to be performed for each new vehicle off the production line, the 0km emission of the new vehicle is ensured, and the working hours and costs are reduced.

This invention relates to diesel engine exhaust aftertreatment technology, and more particularly to an adaptive urea injection control method for a diesel engine SCR system. The method includes: automatically selecting an ammonia storage state prediction model based on catalyst temperature; calculating a basic value for urea injection quantity according to a three-segment control strategy based on the predicted ammonia storage quantity and the monitored catalyst temperature; modeling historical engine operating condition characteristic sequences using an LSTM network to output a feedforward prediction value for the current urea injection quantity; fusing the feedforward prediction value and the basic value for the current urea injection quantity to obtain the final urea injection quantity and outputting it to the urea nozzle; and periodically executing an adaptive coefficient correction process to adjust the adaptive correction coefficient and update the urea injection quantity. Compared with existing technologies, this invention has advantages such as accurate prediction of ammonia storage state and improved accuracy of injection quantity under transient operating conditions.

The application discloses a kind of ammonia decomposition hydrogen production system and hydrogen production method based on double adsorption, the liquid outlet of ammonia storage device in the system is communicated with the gas inlet of ammonia decomposition reaction device through the cold liquid channel on heat exchange device, the gas outlet of ammonia decomposition reaction device passes through the gas channel on heat exchange device, and is communicated with first adsorption device by the aid of first compression device, the adsorption outlet of first adsorption device is communicated with the gas inlet of second adsorption device, and part of the gas after being adsorbed by second adsorption device is introduced into terminal equipment application, and part of it is introduced into first adsorption device to be used for purging first adsorption device.The system realizes the recycling of tail gas after desorption of adsorption column, realizes zero emission of ammonia and nitrogen oxides, and improves the purging effect of adsorption device.

This invention discloses a low-carbon peak-shaving system and method for using ammonia-blended fuel. The low-carbon peak-shaving system includes a coal-fired boiler, a coal-fired burner, an ammonia burner, a coal-fired generator, a clean energy generator, an ammonia preparation device, an ammonia storage system, ammonia pipelines, a first switch, a second switch, a third switch, a first transformer, a second transformer, a third transformer, output lines, and a power grid. The ammonia preparation device, the ammonia storage system, and the ammonia burner are connected via ammonia pipelines. This invention utilizes the excess electricity generated by the coal-fired unit to produce ammonia, enabling the actual grid-connected power of the coal-fired unit to reach the required grid-connected power. Under full load of the coal-fired unit, ammonia is injected into the main combustion zone of the furnace using a suitable flow rate and method, while controlling the combustion stability within the furnace and the NO at the furnace outlet. X Under the premise that the concentration and carbon content of fly ash have a relatively small impact, the system's renewable energy absorption capacity and carbon emissions can be effectively improved.