105 results about "Ammonia storage" patented technology

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.

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.

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.

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 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.

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.

The invention discloses a post-processing efficiency monitoring model building method, which relates to the technical field of engine post-processing, and comprises the following steps: through monitoring data of a front NOx sensor and a rear NOx sensor, generating front NOx initial monitoring data and rear NOx initial monitoring data, collecting exhaust temperature data and urea injection amount data, identifying and generating vehicle state data, and establishing a post-processing efficiency monitoring model according to the vehicle state data. Judging whether the post-processing system state meets a setting trigger state or not; if yes, whether the vehicle state data meet the set state condition or not is judged through the ECU; if yes, injection testing is carried out, and ammonia gas is filled into the SCR catalyst, so that the SCR catalyst reaches the maximum ammonia storage state; according to the post-processing efficiency monitoring model building method, through pre-fault analysis, condition judgment, injection testing, injection stopping testing, efficiency calculation and fault judgment, the technical defects of a rear NOx sensor are avoided, the fault recognition accuracy is greatly improved, and the influence of ammonia leakage is eliminated.

The invention relates to an SCR double-spraying system and a cooperative control method thereof, and relates to the technical field of automobile and engine aftertreatment. The system comprises a first urea nozzle, a first selective catalytic reducer, an ammonia escape catalyst, an oxidation catalyst, a particulate matter trap, a second urea nozzle, a second selective catalytic reducer and another ammonia escape catalyst which are arranged behind an engine and in the airflow direction. The first urea nozzle is arranged at the front end of the first selective catalytic reducer and is of a tight coupling structure with the engine. By combining the ammonia storage capacity and catalytic efficiency of the first selective catalytic reduction device and the second selective catalytic reduction device, the injection proportion of the first urea nozzle and the second urea nozzle is distributed so as to control the urea injection amount. According to the method, the urea injection proportion of the upstream and downstream urea nozzles can be reasonably distributed under different exhaust flow and exhaust temperature conditions, it is ensured that generation of N2O is restrained while the NOx emission target is achieved, cooperative control over NOx and N2O emission is achieved, and the requirements of future emission regulations are met.

The present disclosure concerns a reactor system (10) designed for the conversion of hydrogen to ammonia and vice versa. The reactor system (10) is capable of operating two distinct chemical reactions under separate sets of operating conditions. The first reaction involves synthesizing ammonia from a mixture of hydrogen and nitrogen under a first set of operating conditions that favor ammonia synthesis. These conditions encompass a specific range of temperature, of pressure and of residence time. The second reaction entails cracking ammonia to produce hydrogen and nitrogen under a second set of operating conditions that favor ammonia cracking. The pressure values in the second set of conditions are lower than those in the first set. The reactor system (10) can include devices such as heating means, an ammonia storage structure (16), and various other components designed to optimize the process of ammonia synthesis and cracking.

This invention discloses a dual-mode system for high-temperature waste heat recovery of a solid oxide fuel cell coupled with ammonia decomposition for hydrogen production. The system includes a solid oxide fuel cell, an open-loop air Brayton cycle, an ammonia decomposition reactor, and a waste heat hydrogen production assembly. Waste heat utilization of the solid oxide fuel cell exhaust gas is achieved by connecting an air Brayton cycle hot-end heat exchanger in parallel with the ammonia decomposition reactor. High-pressure air from the compressor outlet is heated in the hot-end air heating zone before entering the turbine to perform work. The air after work is either recovered as waste heat or directly discharged into the atmosphere, forming an open-loop Brayton cycle. An ammonia storage tank is connected to the ammonia decomposition reactor via valves. Ammonia gas, after being preheated by reheating, enters the ammonia decomposition reactor for catalytic decomposition. The resulting mixed gas is then heat-exchanged and separated to obtain hydrogen. The system switches between the open-loop air Brayton cycle thermoelectric conversion mode and the ammonia catalytic decomposition hydrogen production and energy storage mode by controlling the flow rates of the working fluid entering the air heating zone and the ammonia decomposition reactor, ensuring the continuous, stable, and safe operation of the system.

An ammonia regasification system and a vessel comprising same, according to one embodiment of the present invention, comprises: a heating unit for heating ammonia of an ammonia storage tank and supplying same to a demand source; a reliquefaction unit for reliquefying ammonia boil-off gas of the ammonia storage tank; and a boil-off gas transfer unit for transferring, to the heating unit, at least a portion of the ammonia boil-off gas compressed during reliquefaction in the reliquefaction unit.

The invention provides a liquid ammonia storage area construction auxiliary device, which belongs to the technical field of ammonia area construction, and specifically comprises a positioning support seat used for bearing a liquid ammonia storage tank, and a top cover plate located above the positioning support seat; the supporting structure is arranged on the periphery of the positioning supporting seat and can move, and a strip-shaped opening is formed in the supporting structure; the hanging plate is detachably connected with the supporting structure; the hanger rail is connected to the top cover plate; the power traction mechanism is arranged on the hanger rail and is used for providing traction force for the liquid ammonia storage tank, so that the liquid ammonia storage tank moves towards the positioning support seat; after the supporting structure moves longitudinally, the power traction mechanism can be supported; compared with the prior art, the cofferdam can be protected, the pipe head for conveying concrete can move in the strip-shaped opening, the construction efficiency and quality of the cofferdam can be improved, after cofferdam construction is completed, the liquid ammonia storage tank can be conveyed easily by adjusting the positions of the supporting structures, and the construction efficiency and quality of the cofferdam can be improved. And the obstacle influence caused by the cofferdam in the transportation process is reduced.

The application discloses a configuration method and system of an electricity-hydrogen-ammonia coupling system, relates to the technical field of electricity-hydrogen-ammonia coupling systems, and comprises the following steps: according to renewable energy daily output data, daily hydrogen load data and daily net energy, two-stage clustering is sequentially performed to generate typical daily scenarios and a clustering index; all the typical daily scenarios are subjected to electricity-hydrogen-ammonia energy storage collaborative simulation operation, the change amount of hydrogen storage and ammonia storage after simulation operation of each typical daily scenario is obtained, and the annual energy storage state is reconstructed based on the clustering index; and the optimal equipment capacity configuration scheme is obtained by taking the minimum annual total cost composed of simulation operation cost, capacity configuration cost and hydrogen safety risk cost as an optimization target. While the calculation cost is reduced, the solving efficiency is improved, the time sequence connection characteristics and the energy storage characteristics of different long-time energy storages are reserved, energy transfer in multiple time scales is realized, and thus the applicability and economy of the planning scheme are improved.

The application provides a NOx conversion control method and device, a storage medium and an electronic device, and is applied to a controller in a double-SCR aftertreatment system. The method comprises the following steps: in the case that the working mode of a front-stage SCR in the double-SCR aftertreatment system is an efficiency control mode, determining whether the state of a target vehicle is a parking state, and in the case that the state of the target vehicle is the parking state, switching the working mode of the front-stage SCR from the efficiency control mode to a closed-loop control mode; in the case that the front-stage SCR is in the closed-loop control mode, supplementing ammonia storage inside the front-stage SCR, and using the supplemented ammonia storage to convert NOx when the target vehicle is started again after parking. Through the judgment of the vehicle speed, in the case that the vehicle speed is less than a set speed, the ammonia storage inside the front-stage SCR is rapidly supplemented, and after the engine is stopped and started again, there is sufficient ammonia storage inside the front-stage SCR, so that the low-temperature NOx conversion capacity of the system is improved.

The present application relates to ammonia storage technology field, more specifically, a kind of ammonia storage tank breathes water washing integrated device. Including ammonia storage tank, the inlet and outlet are provided on ammonia storage tank, breathes water washing rectangular box and is arranged at the top of ammonia storage tank, still including the lifting baffle of being divided into three independent spaces by breathes water washing rectangular box, fixed baffle and energy recovery component, salt water inlet is provided on breathes water washing rectangular box, salt water inlet is used to add salt water to breathes water washing rectangular box, fixed baffle is fixedly connected on breathes water washing rectangular box, fixed baffle is sealed with ammonia storage tank junction, lifting baffle is slidingly connected in breathes water washing rectangular box, with the advantage that ammonia gas can be avoided ammonia feeding to the escape of atmosphere, through the salt water between baffle to the water washing absorption of escaped ammonia gas, discharge can replace breathes valve, utilize the energy of discharge and ammonia gas fusion water process to carry out partial energy recovery.

An ammonia gas leakage inhibition method according to the present invention is characterized by: supplying, in a state where a storage tank for storing liquefied ammonia is open, the storage tank with a cryogenic liquid having a temperature lower than that of the stored liquefied ammonia stored in the storage tank; and inhibiting leakage of the ammonia gas to the outside of the storage tank. The cryogenic liquid is preferably liquid nitrogen or liquefied ammonia in a sub-cooled state. According to the present invention, it is possible to provide an ammonia gas leakage inhibition method that can inhibit, in a state where a storage tank for storing liquefied ammonia is open, leakage of ammonia gas to the outside of the storage tank, and it is also possible to provide a liquefied ammonia storage apparatus that can inhibit, in a state where a storage tank having stored therein stored liquefied ammonia is open, leakage of the ammonia gas to the outside of the storage tank.

The utility model discloses an ammonia hydrogen engine device based on ammonia gas composite injection. The ammonia hydrogen engine device comprises an engine cylinder; the in-cylinder direct injection liquid ammonia injector is connected with the cylinder body end of the engine cylinder; the manifold hydrogen injector is arranged on an air inlet pipe connected with the engine air cylinder; the manifold ammonia gas ejector is arranged on an air inlet pipe connected with the engine air cylinder; a high-pressure hydrogen gas tank connected to the manifold hydrogen gas injector and used for supplying hydrogen gas; and the ammonia storage tank is connected with the manifold ammonia gas ejector and the in-cylinder direct injection liquid ammonia ejector and is used for supplying ammonia. According to the ammonia hydrogen engine device based on ammonia gas composite injection, high-power output of the engine under different working conditions can be achieved, abnormal combustion is avoided, and zero carbon emission of the engine is achieved.

This invention discloses a method and apparatus for determining the maximum performance of a split-phase catalytic converter (SCR). In this method, for the i-th second within the injection duration, the urea injection rate at the i-th second and the upstream NO concentration at the i-th second are considered. X Mass flow rate, downstream NO in the i-th second X The ammonia storage capacity of the SCR in second i is calculated based on the mass flow rate and SCR conversion factor, and the upstream NO in second i is used as a reference. X The concentration of NO in the downstream region at the i-th second X The concentration is used to calculate the SCR conversion efficiency in the i-th second, where i is a positive integer. The maximum ammonia storage capacity of the SCR at the current temperature is calculated by integrating the total ammonia storage capacity over the injection duration. The highest conversion efficiency among the conversion efficiencies in each second within the injection duration is taken as the highest conversion efficiency of the SCR at the current temperature. Using the method of this invention, the maximum ammonia storage capacity and the highest conversion efficiency of the SCR can be measured quickly and accurately.