25 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.

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 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.

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).

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.

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.

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.

The utility model provides a chloromethane waste acid treatment device, which comprises a waste acid halogenation unit, a water washing unit and a methanol recovery unit, and is characterized in that a waste acid halogenation reactor and a methanol recovery tower are additionally arranged on the basis of the current chloromethane synthesis device adopting an excess hydrogen chloride method, and meanwhile, an MVR heat pump rectification technology is adopted at the methanol recovery tower. According to the utility model, excessive methanol is added into the waste acid halogenation reactor, so that the excessive added hydrogen chloride is prevented from being analyzed and deeply desorbed from the waste water, and the production energy consumption is reduced. And meanwhile, the technical problems that the reaction speed of a methanol excess method is relatively low, and a reaction kettle with a relatively large volume is needed to provide enough retention time are also solved. And meanwhile, an MVR heat pump rectification technology is adopted in the methanol recovery tower, and a large amount of low-grade waste heat carried by gaseous methanol is increased to high-grade heat for reuse by utilizing heat pump rectification, so that steam consumption is greatly reduced.

A system for treating and recycling surplus hydrogen in tail gas of a cold hydrogenation process comprises an intermediate tank, the top of the intermediate tank is connected with the bottom of a cooler through a first pipeline and connected with the middle of the cooler through a second pipeline, the top of the cooler is connected with a hydrogen supplementing buffer tank through a third pipeline, and the hydrogen supplementing buffer tank is connected with a circulating hydrogen buffer tank. According to the system, surplus cold energy of the low-temperature silicone oil unit is fully utilized, surplus hydrogen is recycled, and the maximum economic benefit is achieved in the aspects of energy utilization and raw material recycling. High-pressure and low-pressure tail gas in the system is treated separately, the stability of the system is improved, and meanwhile damage to instruments and equipment is avoided.

The application discloses a hydrogen storage device with a leakage protection structure and relates to the technical field of hydrogen storage. The hydrogen storage device comprises a storage tank, a protection shell slidingly installed on the outer surface of the storage tank, a vent pipe fixedly installed on the top of the storage tank, a high-pressure valve fixedly installed on the top of the vent pipe, a gas outlet pipe fixedly installed on the outer surface of the storage tank, a gas leakage mechanism installed in the gas outlet pipe, an alarm fixedly installed on the outer surface of the protection shell, and a buffer mechanism installed between the bottom of the storage tank and the bottom of the inner cavity of the protection shell. The hydrogen storage device with the leakage protection structure automatically adjusts the pressure in the storage tank through the gas leakage mechanism, timely discharges the excess hydrogen when the pressure is too high, prevents the pressure from continuously rising to damage the storage tank, reduces the downward impact force when the storage tank is depressurized through the buffer mechanism, protects the structural integrity of the storage tank, and prolongs the service life of the storage tank.

Provided herein are systems and methods for using pure hydrogen as fuel in a turbocharged fuel cell. A vehicle may include a storage (200) configured to store pressurized hydrogen, a fuel cell (204), a catalytic converter (226), and a turbo compressor (220, 224). 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 (224) to recover heat from the catalytic converter (226).

The application discloses an economic and efficient butyl aldehyde hydrogenation butanol production process, a part of butyl aldehyde raw materials is supplemented from a separation washer, butyl aldehyde raw materials are used to wash butanol and heavy components in circulating gas; the remaining part of butyl aldehyde raw materials is supplemented from a butyl aldehyde vaporizer, after preheating, mixed circulating gas is mixed with excess hydrogen gas returned from a liquid phase hydrogenation reactor, a part of high-temperature mixed circulating gas is sent to the bottom of the butyl aldehyde vaporizer, butyl aldehyde raw materials are fully vaporized, and heavy components in the butyl aldehyde raw materials are discharged from the bottom; the remaining part of high-temperature mixed circulating gas is bypassed to the outlet of the butyl aldehyde vaporizer, and the temperature of reaction gas feed is increased to meet the temperature requirement of the reaction gas feed. The combined process of gas phase hydrogenation and liquid phase hydrogenation solves the problem that the inlet of the existing gas phase hydrogenation reactor contains a certain amount of butanol and heavy components; butyl aldehyde raw materials are supplemented at two positions of the gas phase hydrogenation system, butyl aldehyde raw materials are used to wash butanol and heavy components in circulating gas, and the gas phase hydrogenation effect is ensured.

Provided herein are systems and methods for using a methanol solution in a fuel cell. A vehicle may include a storage configured to store fuel; a reformer configured to produce hydrogen from the fuel received from the storage; and a fuel cell. The fuel cell may include an anode loop fluidically coupled to the reformer and configured to receive the hydrogen therefrom; and a cathode loop configured to receive oxygen. A catalytic converter arranged downstream from the fuel cell may be configured to recover excess hydrogen from the hydrogen used by the anode loop and to recover excess oxygen from the oxygen used by the cathode loop. The catalytic converter may further supply heat to an expander of a turbo compressor through the reformer.

This application discloses a shape memory material and its preparation method, belonging to the field of new materials technology. The technical solution is as follows: A shape memory material is obtained by mixing and vulcanizing polyether-modified silicone oil, acrylate silicone oil, vinyl silicone oil, and a high thermal conductivity filler in a mass ratio of 100:1 to 30:1 to 30:0.1 to 10. The polyether-modified silicone oil is a mixture of hydrogen-containing silicone oil modified from polyether raw materials and other hydrogen-containing silicone oils. The preparation method of the mixture of hydrogen-containing silicone oil modified from polyether raw materials is as follows: mixing excess hydrogen-containing silicone oil with polyether raw materials and heating for 2 to 8 hours in the presence of a catalyst. The polyether raw materials are selected from at least one of methyl allyl polyoxyethylene ether, allyl alcohol polyoxyethylene ether, methyl allyl alcohol polyoxyethylene ether, hydroxybutyl vinyl ether polyoxyethylene ether, and isopentenyl alcohol polyoxyethylene ether. The high thermal conductivity filler has a thermal conductivity greater than 0.5 W / (m·K). The shape memory material provided by this application possesses high memory performance, high biocompatibility, and good stability.

Provided herein are systems and methods for using a methanol solution in a fuel cell. A vehicle may include a storage configured to store fuel; a reformer configured to produce hydrogen from the fuel received from the storage; and a fuel cell. The fuel cell may include an anode loop fluidically coupled to the reformer and configured to receive the hydrogen therefrom; and a cathode loop configured to receive oxygen. A catalytic converter arranged downstream from the fuel cell may be configured to recover excess hydrogen from the hydrogen used by the anode loop and to recover excess oxygen from the oxygen used by the cathode loop. The catalytic converter may further supply heat to an expander of a turbo compressor through the reformer.

This invention discloses a system and method for photovoltaic hydrogen production for boiler catalytic denitrification and green hydrogen co-firing. The system includes: a distributed photovoltaic power generation system, a power grid, a power distribution unit, a water electrolysis hydrogen production and control unit, a hydrogen valve (first type), a boiler, a hydrogen valve (second type), an oxygen valve, a blower, and a main fuel module. The power distribution unit transmits electricity from the photovoltaic system and the power grid to the water electrolysis hydrogen production and control unit. The hydrogen and oxygen generated by this unit do not require storage containers and are immediately fed into the boiler for use. Specifically, hydrogen is preferentially fed into the boiler denitrification device as a reducing agent, replacing traditional ammonia injection and completely solving the ammonia escape problem; excess hydrogen is then co-fired in the combustion system. Oxygen is fed into the boiler as a combustion aid via a blower. This invention eliminates the complex green ammonia synthesis and storage process, achieving on-demand production and use of green hydrogen, effectively improving photovoltaic absorption capacity, and significantly reducing system investment and operating costs.