46 results about "Excess hydrogen" patented technology

Systems and methods for synthesizing ammonia include one or more electrochemical hydrogen pumps to recover excess hydrogen gas from the ammonia synthesis product stream. The systems and methods improve overall yield and efficiency of the ammonia production process by separating and purifying hydrogen gas that otherwise would be lost.

Systems and methods for synthesizing ammonia include one or more electrochemical hydrogen pumps to recover excess hydrogen gas from the ammonia synthesis product stream. The systems and methods improve overall yield and efficiency of the ammonia production process by separating and purifying hydrogen gas that otherwise would be lost.

The invention relates to the technical field of preparation of hydrofluoroolefin, in particular to a method for preparing 2, 3, 3, 3-tetrafluoropropene, which comprises the following steps: carrying out fluorination reaction on 3, 3, 3-trifluoro-2-chloropropene and excessive hydrogen fluoride under the action of a catalyst to generate a first mixture flow containing 1, 1, 1, 2, 2-pentafluoropropane (245cb), and separating the first mixture flow from the first mixture flow to obtain the 2, 3, 3, 3, 3-tetrafluoropropene. Then directly introducing the first mixture flow into a dehydrofluorination reactor for gas phase dehydrofluorination reaction to generate a second mixture flow containing 2, 3, 3, 3-tetrafluoropropene, hydrogen fluoride and unreacted raw materials, finally condensing the second mixture to remove hydrogen chloride, condensing and recycling hydrogen fluoride to obtain a third mixture flow, and rectifying the third mixture flow to obtain 2, 3, 3, 3-tetrafluoropropene. And 3, 3, 3, 3-tetrafluoropropene. According to the invention, unavoidable process wastes in the prior art are converted into recyclable reaction raw materials, the environmental protection and economic pressure of by-product treatment in the prior art is eliminated, meanwhile, the purpose of continuous flow reaction is effectively realized, and the process control difficulty and the process cost are reduced.

A method for combustion of an ammonia mixed fuel, according to one embodiment, comprises: a fuel adjustment step of preparing a mixed fuel containing ammonia and hydrogen by mixing ammonia and hydrogen such that hydrogen is mixed in an amount in excess of gaseous ammonia on a volume basis; and a combustion step of supplying the mixed fuel and oxygen to an ammonia combustion catalyst to perform combustion.

The application discloses an integrated marine computing power center system for realizing hydrogen storage and energy supply by marine energy, which comprises a marine computing power center (1), a seawater heat exchange module (2), a temperature control module (3), a membrane distillation module (4), a SOEC water electrolysis module (5), a hydrogen storage module (6), a liquefaction module (7), a SOFC fuel cell module (8) and a hydrogen storage and energy regulation module (9). Normal temperature seawater exchanges heat with cooling water of the marine computing power center at the seawater heat exchange module, the heat-exchanged seawater enters the membrane distillation module after being regulated by the temperature control module, and fresh water is separated out, the fresh water is electrolyzed by the SOEC water electrolysis module to generate hydrogen, the hydrogen is stored by the hydrogen storage module and is used for power generation of the SOFC fuel cell module, the excess hydrogen is liquefied and stored by the liquefaction module, and the hydrogen storage and energy regulation module regulates the supply, storage and replenishment of the hydrogen. The application provides an integrated solution for the marine computing power center to be completely self-sufficient in energy, without needing to access external power supply, and with zero carbon emission in the whole process.

This invention discloses a multivariable, highly coupled hydrogen-oxygen dual-loop coordinated control method for hydrogen fuel cells, comprising the following steps: S1, establishing a nonlinear high-order system model with flow rate and pressure coupling based on the cathode and anode gas dynamic equations of the fuel cell system; S2, designing a multivariable coordinated backstepping controller with the excess oxygen ratio, excess hydrogen ratio, and anode-cathode pressure difference as control objectives; S3, considering the influence of load changes and model uncertainties on the hydrogen-oxygen dual loop, introducing an adaptive control method and designing control commands for the air compressor, circulating pump, and solenoid valve; S4, selecting a suitable Lyapunov function to prove the stability of the system and completing the adaptive backstepping control of the anode-cathode pressure difference and gas flow rate; This invention solves the problem of multivariable, highly coupled coordinated control of the hydrogen-oxygen dual loop in fuel cells, and can maintain the transient and steady-state performance of the system under sudden load changes, improving the safety and reliability of system operation.

The invention discloses a hydrogen physiotherapy system based on a fuel cell, and relates to the technical field of fuel cells, the fuel cell comprises a pool body, a power grid subsystem and a fuel cell subsystem, the pool body is provided with a cavity capable of accommodating pool water and is used for physiotherapy; the power grid subsystem is used for supplying power to electric equipment around the pool body; the fuel cell subsystem comprises an electric pile, the electric pile is provided with an electric energy output terminal and an anode exhaust port, the electric energy output terminal is electrically connected with the power grid subsystem and is used for supplying power to the power grid subsystem, and the anode exhaust port is communicated with the cavity and is used for introducing excessive hydrogen in the electric pile into pool water; the hydrogen-rich water is formed. According to the technical scheme provided by the invention, by arranging the fuel cell subsystem, excessive hydrogen in an electric pile is reasonably applied, and meanwhile, electric energy can be provided for the power grid subsystem, so that the energy utilization rate is improved, and the operation cost is reduced.

This invention relates to a non-metallic porous carbon anode material, its preparation method, and its application. The preparation method includes: activating a carbon-containing raw material in a hydrogen-containing mixed gas to obtain porous carbon and a benzene-rich hydrocarbon gas; depositing the non-metallic source gas and the porous carbon in a primary deposition; and then depositing the non-metallic source gas and the benzene-rich hydrocarbon gas in a secondary deposition to obtain the non-metallic porous carbon anode material. The carbon-containing raw material is further de-ashed before use, or the porous carbon is de-ashed and then mixed. This invention achieves continuous preparation of porous carbon and non-metallic porous carbon anode materials by activating the carbon-containing raw material with hydrogen. The excess hydrogen generated in this process can be recycled to the hydrogen activation step for reuse. Hydrogen activation enables efficient deoxygenation of the carbon-containing material, avoiding the generation of other oxide impurities during the deposition of non-metals, effectively ensuring the safety of the deposition process. The benzene-rich hydrocarbon byproduct generated during the preparation of porous carbon can further carbonize the material, achieving efficient utilization of carbon resources.

The present invention discloses a device and method for the coordinated removal and solidification of hydrogen peroxide and organic matter, comprising a water inlet assembly, a radar level gauge, an online COD analyzer, an online hydrogen peroxide detector, a variable frequency fan, a low-speed disc assembly, a floating row fixing rod, a floating row stopper, a floating row device, a floating row hose, a control center, a diffuser membrane disc, and a solidification decomposition tank. In the reaction system of the present invention, a filler acts as a catalyst to accelerate the decomposition of hydrogen peroxide. The filler itself is essentially non-consumable and does not form new pollutants, saving the cost of using reagents and the cost of sludge treatment. Organic pollutants in wastewater are degraded by the combined action of the filler, excess hydrogen peroxide, and the diffuser. While removing excess hydrogen peroxide, the oxidizing properties of hydrogen peroxide are fully utilized to remove organic matter and achieve the purpose of water purification.

This invention discloses a method for preparing high-compaction lithium iron phosphate (LFP) cathode material using a mixed iron source, comprising the following steps: S1, preparing the acidic mixture; S2, adjusting the pH of the acidic mixture to 0.8–2.0 using phosphoric acid, followed by solid-liquid separation to obtain an acidic clarified solution; S3, pretreating the acidic clarified solution to obtain a first slurry; S4, adding excess hydrogen peroxide to the first slurry for oxidation, and aging at 60–100°C for 2–6 hours to obtain a white-pink slurry; S5, performing solid-liquid separation on the white-pink slurry to obtain a filter cake, which is then washed, dried, and calcined to obtain high-compaction LFP. Its advantages are: 1) It can significantly improve the compaction density of the lithium iron phosphate cathode material; 2) The method of this invention is simple and flexible to operate, low in cost, and suitable for large-scale production.

The invention discloses hydrogen storage equipment with a leakage protection structure, and relates to the technical field of hydrogen storage, the hydrogen storage equipment comprises a storage tank and a protection shell slidably mounted on the outer surface of the storage tank, a breather pipe is fixedly mounted at the top of the storage tank, and a high-pressure valve is fixedly mounted at the top of the breather pipe; an air outlet pipe is fixedly installed on the outer surface of the storage tank, an air leakage mechanism is installed in the air outlet pipe, an alarm is fixedly installed on the outer surface of the protection shell, and a buffering mechanism is installed between the bottom of the storage tank and the bottom of an inner cavity of the protection shell. According to the hydrogen storage equipment with the leakage protection structure, automatic adjustment of the pressure in the storage tank is achieved through the gas leakage mechanism, excessive hydrogen is discharged in time when the pressure is too high, the storage tank is prevented from being damaged due to continuous rising of the pressure, downward moving impact force generated when the pressure of the storage tank is released is relieved through the buffering mechanism, the structural integrity of the storage tank is protected, and the service life of the storage tank is prolonged.

A system and method for operating a molten carbonate fuel cell is provided to produce an increased amount of H2 in an anode effluent while maintaining the cell to operate within a normal operating range, such as a temperature difference between a cathode input stream and a cathode effluent of 35 DEG C or higher, and a temperature of the cathode effluent is higher than the cathode input stream. A temperature difference between the cathode input stream and the cathode output stream is achieved while still producing an excess of hydrogen due in part to the steps of: a) feeding an input stream containing hydrocarbons and / or reformable fuel to an external reformer; b) reforming 20% by volume or more of the hydrocarbons and / or reformable fuel in an external reformer; and then c) feeding the partially reformed input stream to a fuel cell or a fuel cell stack for further reforming in the anode and / or in the reforming elements in the fuel cell stack.

The present application relates to the technical field of clean energy, and in particular to a novel device and method for preparing green methanol from biogas. The method comprises the following steps: S1: introducing a feed gas into a feed gas compressor, pressurizing same to 1.3 MPaG, and then preheating same to 330ºC by means of a primary convection section of a conversion furnace; S2: entering a hydrogenation reactor for olefin saturation to remove olefins and oxygen, and then entering a zinc oxide desulfurization reactor to remove excess hydrogen sulfide gas; S3: mixing the refined feed gas with water vapor outputted by a boiler, carrying out secondary preheating on the mixture to 600ºC by means of a secondary convection section of the conversion furnace, and carrying out a primary conversion reaction; S4: conveying the gas subjected to the secondary preheating to a radiation section of the conversion furnace in an environment of 910ºC for a secondary conversion reaction; and S5: performing methanol synthesis in an isothermal methanol synthesis tower. The present application can reduce carbon deposition on a catalyst during the preparation of methanol from biogas, so that frequent replacement of the catalyst is avoided, thereby reducing use costs while improving working efficiency.

The utility model belongs to the technical field of hydrogen storage, and particularly relates to a pressure stabilizing device in a hydrogen production and storage process. The pressure stabilizing device in the hydrogen production and storage process comprises a raw material storage tank, a converter, a pressure stabilizing tank, a first pressure regulating assembly and a second pressure regulating assembly, the raw material storage tank conveys hydrogen production raw materials to the converter through a metering pump, and the first pressure regulating assembly and the second pressure regulating assembly are arranged between the converter and the pressure stabilizing tank in parallel. The adjusted pressure of the second pressure adjusting assembly is larger than that of the first pressure adjusting assembly; a pressure detection unit is arranged on the pressure stabilizing tank, the metering pump and the pressure detection unit are connected with a controller, the controller controls the flow of the metering pump according to the hydrogen pressure detected by the pressure detection unit, and when the pressure in the pressure stabilizing tank reaches the adjusting pressure set by the first pressure reducing valve and the pressure is continuously maintained at the pressure, the second pressure adjusting assembly is opened, and the pressure is adjusted. Hydrogen passes through the second pressure regulating assembly, and part of excessive hydrogen is stored in the pressure stabilizing tank, so that safe operation of equipment is ensured.

A system and method for converting a common hydrogen-based input fluid into an proton-rich ionic fluid (PRIF) comprising an overabundance of hydrogen H+protons is disclosed. This conversion occurs in the absence of elevated temperatures or pressures, so that the resulting output fluid is suitable for shipping or storage at Standard Temperature and Pressure (STP): Some practical usages for the PRIF are also disclosed.

The invention relates to the technical field of hydrogen fuel cells, in particular to a leakage-proof hydrogen fuel cell system of a hydrogen-powered unmanned aerial vehicle, which comprises two end plates and a cell stack, a plurality of anode cavities are divided into at least two anode cavity groups, each anode cavity group comprises at least two anode cavities, and the anode cavities are arranged in the cell stack. The device further comprises a hydrogen shunting assembly, a residual hydrogen converging assembly and a pressure sensor; by grouping the anode cavities of the cell stack and matching independent and controllable hydrogen supply and residual hydrogen recovery passages, an active safety architecture with rapid fault diagnosis and intelligent partition isolation capabilities is constructed, and the problems that when local leakage occurs in an existing centralized hydrogen supply system, a leakage source cannot be rapidly positioned and cut off, and the system reliability is low are solved. Therefore, the prominent problems that fuel is continuously consumed, leakage is aggravated, the burning and explosion risk is high due to the fact that faults cannot be isolated, and the overall reliability of the system is low are solved.

A system and method for converting a common hydrogen-based input fluid into an proton-rich ionic fluid (PRIF) comprising an overabundance of hydrogen H1+ protons is disclosed. This conversion occurs in the absence of elevated temperatures or pressures, so that the resulting output fluid is suitable for shipping or storage at Standard Temperature and Pressure (STP). Some practical usages for the PRIF include 1) AMMONIA MANUFACTURING WITHOUT HABER-BOSCH; 2) CRUDE OIL IMPROVEMENT (API LIFT); 3) MOLECULAR ENHANCEMENT OF HYDROCARBON; and 4) DESULFURIZATION (distillate upgrade).

The present invention relates to the technical field related to water pollution control, and specifically discloses an arsenic-containing wastewater treatment device, comprising a bracket and a tank body fixedly mounted within the bracket, wherein a partition is fixedly mounted within the tank body; a liquid supply assembly for intermittently introducing an oxidant into the wastewater below the partition; a sampling assembly for intermittently sampling the wastewater; and a monitoring assembly for monitoring the status of the wastewater sample. The present invention allows for better control of the reaction rate of hydrogen peroxide with arsenic by introducing small amounts of hydrogen peroxide into the arsenic-containing wastewater multiple times, avoiding incomplete treatment due to an overly rapid reaction and overoxidation or other side reactions that may result from the addition of a large amount of hydrogen peroxide at one time, thereby ensuring the selectivity of the oxidation process. The device also prevents excess hydrogen peroxide from reacting with other substances in the wastewater, altering the pH value of the wastewater, and reducing the efficiency of subsequent pentavalent arsenic precipitation reactions or causing unstable precipitation.

Provided herein are systems and methods for using pure hydrogen as fuel in a turbocharged fuel cell. A vehicle may include a storage configured to store pressurized hydrogen, a fuel cell, a catalytic converter, and a turbo compressor. The fuel cell includes an anode loop fluidically coupled to the storage and configured to receive the pressurized hydrogen therefrom, and a cathode loop configured to receive oxygen. The catalytic converter, arranged downstream from the anode loop, recovers excess hydrogen from the pressurized hydrogen used by the anode loop and recovers excess oxygen from the oxygen used by the cathode loop. The turbo compressor includes an expander to recover heat from the catalytic converter.

The invention discloses an arsenic removal system and an arsenic removal method suitable for non-equilibrium high-concentration arsenic-containing waste acid, and belongs to the technical field of environmental protection, the arsenic removal system comprises an arsenic-containing waste acid storage and conveying module, a hydrogen sulfide synthesis and conveying module and a sulfuration arsenic removal reaction module; the sulfuration arsenic removal reaction module comprises a plurality of sulfuration reactors which are connected in series; and the arsenic-containing waste acid storage and conveying module comprises a plurality of storage tanks arranged in parallel and the like. According to the device, the multiple storage tanks, the multiple gas regulating valves, the multiple microbubble generators and the like are arranged for communication, so that relatively stable output of the waste acid which is high in arsenic content, large in content fluctuation range and unbalanced is achieved, and the influence of the unbalanced characteristic of the arsenic-containing waste acid on the vulcanization arsenic removal effect is reduced; meanwhile, the accurate matching performance of the input hydrogen sulfide gas amount of the hydrogen sulfide gas continuous vulcanization precipitation system is improved, so that the effects of improving the arsenic removal rate, reducing the excess hydrogen sulfide rate and the like are achieved, and the defects in the prior art are overcome.

The application provides a multi-energy complementary source decarburization, hydrogen production and hydrogen storage integrated system and method, which comprises a renewable energy power generation system, a water electrolysis hydrogen production system and a chemical chain decarburization hydrogen production and hydrogen storage integrated system, wherein the chemical chain decarburization hydrogen production and hydrogen storage integrated system comprises a fuel reactor, a hydrogen production reactor, a hydrogen storage unit and an oxidation exothermic reactor. The fuel reactor is connected with the water electrolysis hydrogen production system, the oxygen carrier is countercurrently contacted with the excess hydrogen gas output by the water electrolysis hydrogen production system in the fuel reactor, and an oxidation-reduction reaction is carried out to generate a first solid oxide and water vapor. The hydrogen storage unit stores hydrogen in the form of the first solid oxide, and the oxidation exothermic reactor is connected with the hydrogen production reactor and the fuel reactor. The method and system of the application can realize peak clipping and valley filling and suppress the volatility of renewable energy in a multi-energy complementary manner, so as to ensure the stable output of intermittent renewable energy.

This disclosure relates to hydrogen gas infusion (HI) systems and methods thereof. Systems described include ones comprising: a fluid reservoir containing a medical solution, the fluid reservoir being in fluid communication with and downstream of the hydrogen gas source so as to receive and equilibrate the hydrogen gas with the medical solution to produce a hydrogen-infused solution; and a gas dilution module in fluid communication with and downstream of the fluid reservoir, the gas dilution module for continuously receiving and diluting excess hydrogen gas from the fluid reservoir without allowing the excess hydrogen gas to reach a combustible concentration. Such innovations described herein provide for an efficient system for infusing high concentrations of hydrogen gas into a medical solution for treatment of an organ or tissue.

The present disclosure generally relates to systems and methods for determining, managing, and / or controlling excess hydrogen flow in a system comprising a fuel cell or fuel cell stack and ejector based on the internal state of the ejector.

This invention discloses a hydrogen supply system and hydrogen consumption equipment with a buffer function, relating to the field of hydrogen fuel cell technology. The system includes a housing, inside which a hydrogen storage tank and a fuel cell are fixedly installed. An air pump is fixedly connected to the input end of the hydrogen storage tank, and a delivery pipe is fixedly connected to the output end of the air pump. One end of the delivery pipe is fixedly connected to the fuel cell. A buffer mechanism is provided on the surface of the fuel cell. This hydrogen supply system with a buffer function, when the hydrogen storage tank supplies hydrogen to the fuel cell through the air pump and delivery pipe, allows excess hydrogen to enter a pressure relief box through a pressure relief pipe when the pressure in the delivery pipe becomes too high. This pressure relief causes the excess hydrogen to move and enter the pressure relief box through the pressure relief port, thus buffering the hydrogen supply and reducing the risk of affecting the diffusion rate and reaction rate of hydrogen molecules within the fuel cell stack.

The application discloses a kind of hydrogen isotope separation devices based on palladium membrane, belong to hydrogen isotope separation technical field, including electrolytic mechanism, electrolytic mechanism is connected with pure oxygen fuel cell and pressurizing and heating mechanism, pressurizing and heating mechanism is connected with multistage palladium membrane mechanism, multistage palladium membrane mechanism is connected with cooling mechanism, heat exchange mechanism is connected between cooling mechanism and pressurizing and heating mechanism, cooling mechanism is connected with pure oxygen fuel cell.The application uses the above-mentioned hydrogen isotope separation device based on palladium membrane, by utilizing pure oxygen fuel cell consumption electrolytic oxygen and excess hydrogen, generates electric energy to repay power supply, the heat of high-temperature hydrogen in cooling mechanism is exchanged to pressurizing and heating mechanism by heat exchange mechanism, reduces energy consumption, then by setting porous ceramic hollow plate increases permeation area, improves separation efficiency, realizes the efficient separation of hydrogen isotope, reduces energy consumption.

To provide a nitrogen gas production system which, while removing water and foreign matter from compressed air, can remove oxygen in the compressed air by chemical reaction with hydrogen performed via a catalyst, producing high-purity nitrogen gas.SOLUTION: A compressor, an air dryer, and an oil mist filter are provided in a preceding stage of an H2 converter. An air tank is provided in a subsequent stage of the H2 converter. The H2 converter to which a hydrogen cylinder with hydrogen gas being reserved therein is connected includes: a drainage port through which water produced by reaction of hydrogen in the hydrogen gas with oxygen in compressed air is discharged; an air discharge port through which high-purity nitrogen gas having a nitrogen concentration increased due to reaction of the oxygen is discharged; and a catalyst which is charged in the H2 converter so as to increase reactivity between the hydrogen and the oxygen. The H2 converter further includes a hydrogen discharge tube extending on an upper side of the H2 converter to discharge excess hydrogen remaining without reacting with oxygen.SELECTED DRAWING: Figure 1

The present invention relates to the technical field of secondary batteries, and in particular to a method for removing acid from lithium difluorophosphate. The method for removing acid from lithium difluorophosphate provided by the present invention comprises the following steps: adding dichlorophosphoric acid and lithium hydride to a lithium difluorophosphate solution under a protective atmosphere to react so as to convert hydrofluoric acid in the lithium difluorophosphate solution into lithium difluorophosphate; the molar ratio of the lithium hydride, the free acid in the lithium difluorophosphate solution, and dichlorophosphoric acid is (1-1.1):2:1. By adding dichlorophosphoric acid and a slightly excess amount of lithium hydride to the lithium difluorophosphate solution, the dichlorophosphoric acid and the slightly excess amount of lithium hydride react with the free acid hydrofluoric acid in the solution, thereby removing hydrofluoric acid from the solution to a great extent and generating the main product lithium difluorophosphate, thereby improving the utilization rate of fluorine resources without introducing other impurities or generating by-product water. The deacidification method is simple, efficient, low-cost, and very suitable for industrial production.

The present application relates to a method, apparatus, electrical equipment, and storage medium for starting an air-cooled fuel cell. The method comprises: performing hydrogen purges on the anode of a fuel cell stack in batches until the hydrogen content in the anode of the fuel cell stack meets the startup requirements of the air-cooled fuel cell. The method then stops the hydrogen purge on the anode of the fuel cell stack by closing the anode outlet pipe. This prevents excessive hydrogen purges from wasting hydrogen and drying out the membrane electrode, which reduces the performance of the membrane electrode. This method solves the problem of excessive hydrogen purges on the anode of existing air-cooled fuel cells during startup, which results in hydrogen waste and reduced membrane electrode performance.

The utility model belongs to the strip production and equipment technical field especially relates to a structure of improving air tightness under high hydrogen mode of continuous annealing furnace fast cooling section, including sealing roll chamber outer shell, roller, sealing roll chamber outer shell lining firebrick, roller bottom is sealedly connected with graphite sealing washer, and the bottom and both ends of graphite sealing washer are fixed through the castable, the both ends of castable and sealing roll chamber outer shell lining firebrick are provided with backing plate, and the backing plate and sealing roll chamber outer shell lining firebrick are filled with microporous heat insulating board, and the gap of each part of upper end, lateral wall and bottom in sealing roll chamber is filled with ceramic fiber, the main purpose of the utility model is to guarantee the stability of fast cooling section sealing roll chamber structure, and improve the sealing property in the roll chamber, prevent excessive hydrogen medium overflow to slow cooling section and overaging section, save the consumption of hydrogen energy, guarantee the safety of unit.

This invention discloses a gas recovery device and method for producing pyridine fluoride, relating to the field of pyridine fluoride production technology. It includes a gas recovery mechanism and an electrically operated telescopic rod installed inside the gas recovery mechanism. A reaction mechanism is located at the bottom of the gas recovery mechanism, and a drain valve is fixedly installed on one side of the bottom of the reaction mechanism. The gas recovery mechanism includes a recovery chamber, with an exhaust port on one side of the front of the recovery chamber. A first recovery pipe is fixedly installed on the side of the recovery chamber near the exhaust port. The electrically operated telescopic rod is fixedly installed inside the recovery chamber, and a compression piston is fixedly connected to its output end. The recovery chamber recovers and reuses excess hydrogen fluoride gas. The electrically operated telescopic rod allows the hydrogen fluoride gas to enter the recovery bend through the exhaust port and compress the second sealing plate, discharging it into the third inlet pipe, thereby carrying out a secondary reaction of the excess hydrogen fluoride.