261 results about "Ammonia storage" patented technology

The invention discloses a mobile modular ammonia-hydrogen fuel cell system and a power generation method. The mobile modular ammonia-hydrogen fuel cell system comprises an ammonia storage module, an ammonia filling module, a hydrogen supply module and a fuel cell module, the ammonia storage module is connected with the ammonia filling module, the ammonia filling module is connected with the hydrogen supply module, and the fuel cell module is communicated with the hydrogen supply module; the hydrogen supply module comprises a plurality of reactors and combustors which are separately arranged; the fuel cell module comprises a fuel cell and a lithium battery which are connected in series; wherein two reactors are flue gas heating reactors, and the other reactor is an electric heating reactor; the combustor is connected with the flue gas heating reactor; the two flue gas heating reactors are simultaneously communicated with the electric heating reactor; the lithium battery is communicated with the electric heating sheet, and a purification unit is arranged between the electric heating reactor and the fuel cell. The mobile modular ammonia-hydrogen fuel cell system can realize flexible carrying of equipment and rapid supply of fuel, can realize rapid power supply under emergency conditions, and has the advantages of being green, pollution-free, wide in adaptive condition and the like.

The invention provides an island energy system optimization scheduling method considering ammonia-to-electricity waste heat power generation, and the method employs an independent island integrated energy system containing an ammonia-to-electricity system to execute a weekly-day-intra-day multi-stage operation optimization scheduling strategy, and the independent island integrated energy system is a system considering the ammonia supply demand. Wind energy and solar energy are used as energy input, energy is supplied to seawater desalination equipment and an electricity-to-ammonia system, and the electric load requirements of island residents are met; meanwhile, seawater desalination equipment is used as a power demand response resource to increase the water-energy coupling relationship of the system model, and cross-time storage and utilization of fresh water resources are realized through a reservoir, so that an ammonia-hydrogen power ship which is used for meeting daily travel demands of island residents is used as an ammonia load; an electricity-to-ammonia system and an ammonia storage tank are adopted to realize effective consumption of island wind and light resources; according to the invention, the long-period energy supply reliability of the island can be improved, and the problem of uncertainty of wind energy and light energy resources of the island can be effectively solved.

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.

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 discloses a salt cavern ammonia reservoir stability evaluation system based on multi-parameter fusion and intelligent perception, and aims to solve the problem of stability evaluation of a salt cavern ammonia reservoir. According to the system, the geological condition is determined through a three-dimensional seismic exploration system and a drilling exploration technology, and sonar measurement and a sensor are used for monitoring data such as the cavity internal pressure and the volume shrinkage condition of the ammonia storage library in real time. Multi-source parameters such as the internal pressure, the cavity volume shrinkage rate and the safety pillar width are fused, micromechanical parameters and macrogeological conditions are incorporated into a stability coefficient, and the judgment accuracy is improved. The Internet of Things based on a deep learning algorithm is used for collecting data through a sensor network and transmitting the data to a large platform for analysis, so that real-time judgment and intelligent perception of stability can be realized, an operation risk can be predicted, and a response mechanism can be made in time. Meanwhile, the method provides mature thoughts and references for stability evaluation of similar underground reservoirs.

The invention discloses an ammonia fuel combustion system and a control method thereof, and relates to the technical field of fuel combustion. The system comprises an ammonia engine, a reforming hydrogen production device, a preheating box, an ammonia storage device, a premixer and a turbocharger, wherein the reforming hydrogen production device comprises a reaction inner cavity and a heating outer cavity. The premixer mixes gases from the ammonia reservoir, the turbocharger, and the reaction chamber of the reforming hydrogen production unit. The reaction inner cavity of the reforming hydrogen production device is used for carrying out decomposition reaction on ammonia-containing gas from the ammonia storage device and the turbocharger to obtain hydrogen-containing gas, and providing the hydrogen-containing gas to the premixer. A waste gas outlet of the ammonia engine is connected to a heating outer cavity of the reforming hydrogen production device, and the heating outer cavity provides reaction heat for the reaction inner cavity. The heating outer cavity is connected to the preheating box, and the preheating box preheats ammonia-containing gas input into the reaction inner cavity through ammonia engine waste gas from the heating outer cavity. The hydrogen production efficiency can be improved, so that the operation performance of the engine is improved.

The invention provides an ammonia preparation and denitration system based on ammonia carbamate pyrolysis, which comprises an ammonia preparation system and a denitration device, and the ammonia preparation system comprises an ammonia carbamate storage tank, a variable frequency metering feeding device, a flue gas and air system and a control device; wherein the ammonia carbamate storage tank comprises an ammonia carbamate discharge port; the variable-frequency metering feeding device comprises a device feed port and a device discharge port, and the device feed port is communicated with the ammonia carbamate discharge port; the flue gas and air system comprises a flue gas and air duct, an ammonia and air mixer and a high-temperature fan, and the discharge port of the device is communicated with the flue gas and air duct. The ammonia preparation system can directly pyrolyze the ammonia carbamate raw material to prepare ammonia, compared with the prior art that a denitration system adopts urea pyrolysis or hydrolysis to prepare ammonia, the links of dehydration, drying and the like in the raw material production process are omitted, a solution does not need to be prepared when the raw material is used for preparing the ammonia, the energy consumption is reduced while water is saved, and the ammonia preparation system has the advantages of less equipment, simple process, low cost and the like. The energy consumption cost is low; the use and the maintenance are easy, and the like.

The invention discloses a thermal power deep peak regulation system and method based on ammonia cracking hydrogen production coupling waste heat deep utilization, and relates to the field of thermal power generation, the thermal power deep peak regulation system comprises a gasifier, an ammonia cracking hydrogen production device, a cooler, a separator, an ammonia storage tank, an ammonia hydrogen storage system, a peak regulation combustor and a boiler. The waste heat of the thermal power boiler is utilized to gasify liquid ammonia to form gas ammonia, the ammonia cracking hydrogen production device utilizes medium-high temperature waste heat or electric energy and an ammonia cracking catalyst to crack part of ammonia gas to generate ammonia-hydrogen-nitrogen mixed gas, and the ammonia-hydrogen mixed gas is obtained through separation of the separator. The ammonia-hydrogen mixed gas and ammonia gas are mixed to generate mixed gas with different ammonia-hydrogen proportions, the mixed gas is stored in an ammonia-hydrogen storage tank, and the ammonia-hydrogen proportions used for the combustor are adjusted according to different loads to maintain stable combustion. Stable combustion of the combustor can be maintained under the low load, deep peak regulation of thermal power is achieved, waste heat of the thermal power can be deeply utilized, and the power generation efficiency is improved.

The invention discloses a deep sea floating type ammonia production and storage system and method, and the system comprises an offshore floating type ammonia production ship which is located on the sea surface and is used for producing liquid ammonia; the wind power generation device is positioned above the sea surface and is used for supplying energy required for producing liquid ammonia to the offshore floating type ammonia production ship; the underwater flexible liquid ammonia storage device is located below the sea surface and used for storing liquid ammonia produced by the offshore floating type ammonia production ship, and the water pressure provided by the seawater depth of the installation position of the underwater flexible liquid ammonia storage device is larger than the ammonia saturated vapor pressure corresponding to the seawater temperature of the installation position; liquid ammonia produced by the offshore floating ammonia production ship is conveyed into the underwater flexible liquid ammonia storage device through a pipeline to be stored; according to the offshore floating type production ammonia storage ship containing the underwater flexible liquid storage device, the deepwater pressure and the temperature environment are fully utilized, the flexible non-metal bag is adopted as the liquid ammonia storage device, and therefore the manufacturing cost of the FPSO under the same ammonia production capacity is lower, and the liquid ammonia storage cost is reduced.

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.

The invention discloses a urea injection control method and device of a post-treatment device, a medium and equipment. The method comprises the following steps: measuring ammonia storage limit values of a selective catalytic reducer under different working condition information and an ammonia conversion rate of an ammonia escape catalyst through experiments; collecting a first temperature and a first nitrogen oxide content at an inlet of a selective catalytic reducer and a second temperature at an outlet of an ammonia escape catalyst; querying a current ammonia storage limit value of the selective catalytic reducer; calculating the current ammonia storage amount of the selective catalytic reducer; if the current ammonia storage amount is larger than the current ammonia storage limit value, the current ammonia conversion rate of the ammonia escape catalyst is inquired; based on the current ammonia conversion rate, the current urea injection amount is corrected, and the selective catalytic reducer and the ammonia escape catalyst are decoupled, so that the urea injection amount can be controlled based on the respective characteristics of the selective catalytic reducer and the ammonia escape catalyst, the control precision is improved, and ammonia leakage is reduced.

The invention discloses an aluminum anode carbon flue gas carbon capture system and method. The system comprises a photovoltaic-steam turbine combined power generation device, a flue gas treatment device and a carbon capture device, the flue gas treatment device comprises an ammonia storage tank, a urea storage tank, a calcining furnace, a roasting furnace, an electrical tar precipitator, a heat exchanger, a catalytic reactor, a desulfurizing tower, a CO catalytic bed layer and a wet dust collector; and the carbon capture device comprises a second waste heat boiler, a reaction tower, a second condenser, a compressor and a carbon storage tank. According to the invention, photovoltaic-steam turbine combined power generation is utilized, so that gradient utilization and low-carbon emission of energy are realized, and the comprehensive energy consumption ratio of the carbon capture system is effectively reduced; according to the invention, the carbon dioxide is used as a raw material, the electrical tar precipitator, the catalytic reactor, the desulfurization tower and other devices are introduced, the separation purity and recovery rate of the carbon dioxide are obviously improved, and the gas driving force is effectively enhanced by adopting a steam purging method, so that the desorption process of the carbon dioxide is accelerated and the desorption efficiency is improved.

The invention discloses a small generator system with ammonia as a single fuel source, which relates to the technical field of generators and comprises an ammonia storage device, an ammonia cracker, a generator, an ammonia engine, a buffer tank, a plasma auxiliary ammonia burner, an air blower and a plasma power supply. According to the plasma auxiliary ammonia burner, primary air is activated through high-voltage discharge of the plasma power source, so that ammonia is ignited more easily, ignition can be conducted even if all inlet air is liquid ammonia in the initial starting stage of the plasma auxiliary ammonia burner, and the cold starting problem of a generator system is solved; after the generator system operates stably, the plasma power supply is turned off, additional plasma is not needed to assist ammonia combustion, self-sustaining ammonia combustion can be continued to provide heat for ammonia cracking, and the power consumption is reduced to a great extent. According to the self-formed closed-loop power generation system, on the premise that ammonia serves as a single fuel source, operation and power generation of the ammonia engine are achieved, the power generation requirement is met, and meanwhile carbon emission is effectively reduced.

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 discloses a green electricity hydrogen ammonia optimal configuration method and system, computer equipment and a storage medium. The method comprises the steps that firstly, relevant parameters in green electricity hydrogen ammonia optimal configuration are obtained; setting change ranges of wind power scale, photovoltaic scale, off-grid electric quantity, electric energy storage scale, electrolytic bath scale, hydrogen storage scale, synthetic tower scale and ammonia storage scale; initializing a particle swarm in the change range; designing a fitness function, and calculating a fitness value of each particle in the particle swarm in combination with wind power, photovoltaic, electric energy storage, hydrogen energy storage, hydrogen production electrolytic bath, synthetic tower equipment unit investment construction cost and annual operation and maintenance cost, synthetic ammonia annual output and off-grid electricity price; constraint conditions are set, a simulated annealing particle swarm algorithm is adopted to carry out optimization solution on fitness values of particles in a particle swarm, a global optimal solution is obtained, and wind power, photovoltaic, electric energy storage, hydrogen storage, a hydrogen production electrolytic bath, a synthesis tower and ammonia storage scales are uniformly configured. And under the condition of increasing the optimization variables, the calculation time can be remarkably shortened, and the calculation efficiency is improved.

The invention discloses a self-heating type ammonia decomposition hydrogen production system applied to a mobile terminal in the technical field of ammonia hydrogen production. The system comprises an ammonia storage tank, a heat exchanger, a pressurizer, an ammonia fuel engine, a self-heating type ammonia decomposition reactor, a hydrogen buffer tank and a tail gas aftertreatment device, in the ammonia decomposition hydrogen production reactor, ammonia gas in an ammonia storage tank and hydrogen generated by ammonia decomposition are mixed and combusted to supply heat; tail gas generated after mixed combustion of ammonia and hydrogen in the ammonia fuel engine and the self-heating type ammonia decomposition reactor is used for preheating ammonia gas to enter the ammonia decomposition reactor, and then the tail gas is discharged after being treated by the tail gas treatment device; ammonia gas is supplied in three paths and is respectively used for hydrogen production through ammonia decomposition, combustion in an engine and combustion heat supply in a reactor; and hydrogen is used in two paths and is used for supplying heat for ignition fuel in the engine and combustion in the reactor respectively. The system fully considers the use requirement of the mobile terminal and energy recycling, and has the characteristics of compact structure, high energy utilization rate, adaptation to an ammonia fuel engine and the like.

The utility model provides a purification system suitable for sludge and biomass incineration flue gas, which can synchronously perform deacidification, denitration, dust removal and dioxin and heavy metal removal, and meets the ultra-low emission requirement. The limestone powder bin and the SNCR ammonia water storage tank are both connected with the incinerator; the incinerator is connected with the waste heat boiler; the waste heat boiler is connected with the deacidification reactor through a high-temperature flue, the deacidification reactor is connected with the high-temperature dust remover, and the high-temperature dust remover is connected with the SCR reactor; the calcium hydroxide powder bin I and the SCR ammonia water storage tank are both connected with the high-temperature flue; the SCR reactor, the low-temperature economizer and the air pre-heater are connected in sequence; the air pre-heater is connected with the bag-type dust remover through a bag-type dust removal inlet flue; both the calcium hydroxide powder bin II and the activated carbon bin are connected with the cloth bag dust removal inlet flue; the bag-type dust collector is connected with the induced draft fan; the induced draft fan is connected with the wet deacidification tower; the wet deacidification tower is connected with a chimney; and the sodium hydroxide solution storage tank is connected with the wet deacidification tower.

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.

The invention provides a solid-state ammonia SOFC-PEMFC-GT hybrid power generation system and an operation method thereof. The solid-state ammonia SOFC-PEMFC-GT hybrid power generation system comprises a solid-state ammonia storage-hydrogen production composite module, a high-temperature proton exchange membrane fuel cell, a solid oxide fuel cell, a combustion chamber and a turbine, the solid ammonia storage-hydrogen production composite module is connected with a purifier for purifying hydrogen, the purifier is respectively communicated with the high-temperature proton exchange membrane fuel cell and the solid oxide fuel cell, and the tail gas output ends of the high-temperature proton exchange membrane fuel cell and the solid oxide fuel cell are respectively communicated with the input end of the combustion chamber; the combustion chamber is connected with a turbine which is connected with a generator. In the starting stage, the low-temperature starting of the solid oxide fuel cell is realized; in the stable operation stage, through efficient blending combustion of the combustion chamber, deep chemical heat regeneration is achieved through high-temperature waste gas, the turbine drives the power generator to generate power, and therefore efficient, reliable and green hybrid power generation circulation is achieved.

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 present application discloses a urea injection control method, device, medium and equipment for a post-treatment device, which experimentally measures the ammonia storage limit value of a selective catalytic reducer under different operating conditions and the ammonia conversion rate of an ammonia slip catalyst; collects a first temperature and a first nitrogen oxide content at an inlet of the selective catalytic reducer and a second temperature at an outlet of the ammonia slip catalyst; queries the current ammonia storage limit value of the selective catalytic reducer; calculates the current ammonia storage amount of the selective catalytic reducer; if the current ammonia storage amount is greater than the current ammonia storage limit value, queries the current ammonia conversion rate of the ammonia slip catalyst; based on the current ammonia conversion rate, corrects the current urea injection amount, decouples the selective catalytic reducer and the ammonia slip catalyst, and thus can control the urea injection amount based on the respective characteristics of the selective catalytic reducer and the ammonia slip catalyst to improve control accuracy and reduce ammonia leakage.

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.