26 results about "Gaseous hydrogen" patented technology

This invention relates to the field of chemical equipment technology, and discloses a lithium sulfide preparation device and method, comprising: an insulated shell; a reactor rotatably disposed inside the insulated shell, with a heating chamber formed between the reactor and the insulated shell; a rotating shaft fixed to one end of the reactor, passing through one end of the insulated shell and rotatably engaging with a support assembly; a rotating assembly connected to the rotating shaft to drive its rotation; and a heat source inlet pipe fixed to one end face of the insulated shell to communicate with the interior of the heating chamber. This invention utilizes a dynamic reactor, causing the solid material to continuously tumble and shift during the reaction process, greatly increasing the contact area between the solid phase and the gaseous hydrogen sulfide, enhancing mass transfer efficiency, significantly improving product purity and reaction efficiency, shortening the production cycle, reducing equipment investment and energy consumption, and facilitating large-scale industrial production of high-purity lithium sulfide.

The application belongs to the technical field of low-temperature frozen liquid storage, and particularly relates to a liquid hydrogen storage system capable of realizing safe filling and a hydrogen filling method. The liquid hydrogen storage system capable of realizing safe filling comprises an inner tank and an outer tank, the inner tank is arranged in the outer tank, and further comprises a vent pipe, an upper liquid inlet pipe, a lower liquid inlet pipe, a buffer tank, a compressor, a temperature monitoring element and a liquid level pressure monitoring element. The inlet end of the vent pipe is connected to the upper portion of the inner tank, the inlet end of the vent pipe is in communication with the inner tank, and the outlet end of the vent pipe is in communication with the inner tank. The buffer tank and the compressor are connected to the vent pipe, the outlet of the buffer tank is connected to the inlet of the compressor. The upper liquid inlet pipe is connected to the upper portion of the inner tank and is in communication with the inner tank. The lower liquid inlet pipe is connected to the lower portion of the inner tank and is in communication with the inner tank. The temperature monitoring element and the liquid level pressure monitoring element are arranged on the outer wall of the inner tank. The application can avoid the flow directions of gaseous hydrogen and liquid hydrogen being opposite, is more conducive to discharging gaseous hydrogen, and improves the hydrogen filling efficiency.

A method for operating a piston engine is disclosed, in which a water dispersion containing a reactant is supplied to the combustion chamber of the piston engine, wherein a heating element is placed in the combustion chamber. A first explosion is triggered by the explosive vaporization of the water contained in the water dispersion, by bringing the water dispersion into contact with the heating element and thereby heating it above its boiling point. A second explosion is triggered simultaneously with or immediately after the first explosion, by heating the vaporized water at the heating element with the reactant to a process temperature, thus causing a first chemical reaction in which gaseous hydrogen is produced. This hydrogen combines with process oxygen present in the combustion chamber, under the influence of the process temperature maintained in the combustion chamber by the heating element, in an oxyhydrogen reaction to form water.The expansive reaction energy generated by the first and second explosions is converted into mechanical kinetic energy by the movement of the piston.

The utility model relates to the field of locomotive power technology, concretely relates to a locomotive hydrogen power module, including the carrying main body is provided with fuel cell module, heat dissipation module and composite hydrogen storage module, composite hydrogen storage module is cooperated with fuel cell module and is used for hydrogen supply to fuel cell module, and the composite hydrogen storage module includes a plurality of gaseous hydrogen storage bottles and a plurality of solid hydrogen storage units, and the gaseous hydrogen storage bottle and solid hydrogen storage unit supply hydrogen to fuel cell module by simultaneously or selectively, heat dissipation module is cooperated with fuel cell module and is used for heat dissipation of fuel cell module. The utility model improves hydrogen power module structure, uses composite hydrogen storage module to carry out gaseous hydrogen storage and solid hydrogen storage and supplies hydrogen to fuel cell, can improve hydrogen storage volume density, improves the endurance of locomotive, still can solve the condition that fuel cell heat dissipation quantity is insufficient and cannot release hydrogen under the condition that fuel cell is not completely started.

The present invention relates to a propulsion system and energy transfer method of a hydrogen electric locomotive. The propulsion system of a hydrogen electric locomotive according to the present invention comprises: a hydrogen storage container for storing gaseous hydrogen; a hydrogen fuel cell for receiving hydrogen from the hydrogen storage container and generating electricity; a propulsion battery for supplementing electric energy produced by the hydrogen fuel cell; a converter for boosting the energy produced by the hydrogen fuel cell; a variable voltage variable frequency (VVVF) inverter for converting the energy boosted by the converter; a traction motor for moving a railway vehicle by using the energy received from the VVVF inverter; and an auxiliary power supply device for supplying power necessary for the railway vehicle.

The low-temperature high-pressure hydrogen lossless filling system provided by the application mainly comprises the preparation of low-temperature high-pressure hydrogen, the precooling of a low-temperature high-pressure storage tank and the filling of the low-temperature high-pressure storage tank. The preparation process of the low-temperature high-pressure hydrogen comprises two forms, one of which uses normal-temperature gaseous hydrogen as a gas source, and the other of which uses normal-pressure liquid hydrogen as a gas source. The filling system can ensure that there is no loss of hydrogen during the preparation, precooling and filling of the low-temperature high-pressure hydrogen, improve the transportation density and filling rate, and reduce the filling energy consumption and transportation cost. In addition, the selection of key components and the design of multiple bypasses in the system ensure the stability, efficiency and safety of the operation of the low-temperature high-pressure hydrogen system and guarantee the storage quality of the low-temperature high-pressure hydrogen, which is conducive to the high-quality utilization and wide promotion of the low-temperature high-pressure hydrogen after storage and transportation.

The application discloses a recovery method and system of tail gas after hydroreduction of arsenic trichloride, and the recovery method comprises the following steps: carrying out cooling separation treatment on the tail gas to obtain first tail gas, liquid arsenic trichloride and arsenic powder; the first tail gas is introduced into concentrated sulfuric acid to dissolve residual arsenic trichloride vapor in the first tail gas and obtain second tail gas; hydrogen chloride in the second tail gas is absorbed by an absorption liquid, and hydrogen is separated out and discharged or recovered. Through three-stage cooperative treatment, solid arsenic, unreacted liquid arsenic trichloride and gaseous hydrogen chloride in the tail gas are respectively separated and purified for reuse, closed-loop circulation of arsenic and chlorine elements is realized, and safe discharge of the tail gas is achieved.

An on-board self-pressurization residual hydrogen recovery power generation device and method based on a liquid hydrogen storage and supply system belong to the technical field of new aviation energy. The device solves the problems of low residual hydrogen recovery utilization rate, poor safety and energy waste of the hydrogen storage tank. The device maintains the liquid hydrogen pressure through a liquid hydrogen tank self-pressurization system. The liquid hydrogen enters the cooling channel of the high-temperature components of the engine through the self-pressurization valve and the pump, is heated and vaporized, and then returns to the liquid hydrogen tank. After the liquid hydrogen is exhausted, the relief valve is opened, and the residual gaseous hydrogen in the tank is introduced into the on-board self-pressurization residual hydrogen power generation system. The residual hydrogen gas enters the anode of the proton exchange membrane fuel cell through the liquid hydrogen gasification auxiliary heat exchanger and the pilot-operated pressure reducing valve in sequence. Air is supplied to the cathode of the fuel cell through the ram air inlet. The electric energy generated by the fuel cell is output through the DC-DC converter. The high-temperature exhaust gas of the fuel cell enters the liquid hydrogen gasification auxiliary heat exchanger to preheat the newly introduced hydrogen gas, and completes the heat cycle. It is mainly used in the field of aviation power.

The invention relates to a method (100) for operating a system (200) for converting energy. The proposed method (100) comprises: operating (101) an energy converter (205) of the system (200) by extracting liquid hydrogen from at least one hydrogen tank (203) of a hydrogen tank system (201) for storing hydrogen; determining (103) an expected shutdown point in time of the energy converter (205); starting from a switching point in time before the expected shutdown point in time, operating (105) the energy converter (205) by extracting gaseous hydrogen from the at least one hydrogen tank (203) in order to vaporize liquid hydrogen accumulated in an evaporator (217) of the hydrogen tank system.

The application belongs to the field of clean energy aviation power, and provides a novel SOFC-GT-LTSEPS system architecture low-temperature superconducting electric propulsion system and a working method, which has low-temperature superconducting power generation and electric propulsion functions, generates gaseous hydrogen by heating liquid hydrogen fuel, and provides the anode of the SOFC after compression and pressurization; air is pressurized by the compressor of the GT, heated by a preheating exchanger, and high-temperature and high-pressure oxygen is obtained, which is provided to the cathode of the SOFC. Chemical reaction occurs in the SOFC to generate water vapor, and the remaining hydrogen in the anode is transported to the combustion chamber of the GT to be mixed and burned with the remaining oxygen in the cathode, the generated high-temperature and high-pressure gas drives the turbine to do work, drives the generator to output power, and at the same time, the LTSEPS system provides power to the aircraft. The system architecture scheme has the advantages of fast start, low-temperature superconducting, high energy utilization rate, high power-to-weight ratio and electric propulsion, and has the low-temperature superconducting function, fully utilizes the low-temperature characteristics of liquid hydrogen and the characteristics of high-temperature electrochemical reaction.

This invention discloses a hydrogen embrittlement testing device for high-pressure gaseous hydrogen environment samples, relating to the field of materials testing technology. It includes a high-pressure hydrogen tensile container, an elastic sealing container, and a compensation container. The high-pressure hydrogen tensile container is sealed and equipped with a tensile rod, one end of which penetrates the container and slides in a sealed manner. The elastic sealing container is located inside the high-pressure hydrogen tensile container and is connected to both the inner end of the tensile rod and the inner wall of the container. The compensation container is sealed and equipped with a sliding piston, which divides the compensation container into a liquid chamber and a gas chamber. The liquid chamber is connected to the elastic sealing container, and the gas chamber is connected to the high-pressure hydrogen tensile container. This device solves the problem that gas-liquid conversion mechanisms lack a real-time volume compensation mechanism when used in high-pressure gas environments, leading to pressure response lag and excessive fluctuation amplitude, thus failing to meet the requirements of precision testing.

The invention relates to a process for separating a mixture (1) containing hydrogen and carbon monoxide to obtain gaseous hydrogen, wherein the mixture is cooled in a heat exchanger (E1) to a temperature below -180°C, then separated by at least one stage of partial condensation and / or distillation and / or scrubbing at a temperature below -100°C to obtain a hydrogen-rich gas (7) and a carbon monoxide-rich fluid (17); at least a part of the hydrogen-rich gas is sent to a pressure swing adsorption separation device (PSA) operating at a temperature above 0°C to obtain a hydrogen-rich gas (13) at a pressure of at least 20 bar, and at least a part of this gas (13A, 13) is cooled in a heat exchanger to a temperature below -100°C, its pressure is reduced in a turbine (T) to at least 8 bar, and it is reheated in a heat exchanger to form a hydrogen-rich product (15, 15A) at a pressure of at least 8 bar.

A direct reduction plant comprising a direct reduction furnace (1) and a reformer (33), said reformer (33) comprising several tubes (51) provided with gas supply means (64,65), at least one of said tubes (51A) being provided with at least one gas supply means (65) able to supply said tube (51A) with a gaseous hydrogen stream (25) and at least one other tube (51B) being provided with at least one gas supply means (64) able to supply said other tube (51B) with a methane-containing gas (24

The application belongs to the technical field of hydrogen energy, and particularly relates to a hydrogen supply system applied to a hydrogen refueling station, comprising: a cascade buffer storage system, comprising at least one cascade buffer storage tank and a hydrogen refueling machine corresponding to the cascade buffer storage tank; and an upstream gaseous hydrogen supply link and a liquid hydrogen supply link. The capacity of the cascade buffer storage tank is calculated according to the hydrogen density at the maximum and minimum pressures obtained by fitting a non-ideal gas model according to a preset maximum hydrogen refueling demand amount for a single time; and the compressor in the gaseous hydrogen supply link and the vaporizer in the liquid hydrogen supply link are both calculated according to the equivalent hydrogen peak flow calculated according to the preset maximum hydrogen refueling demand amount for a single time. The application effectively improves the hydrogen supply stability, equipment utilization rate and operation economy of the hydrogen refueling station in multiple scenarios by constructing a redundant architecture for parallel supply of gaseous hydrogen and liquid hydrogen and reasonably configuring the key components.

A system (100, 200, 300, 400) for hydrogen liquefaction configured to receive a gaseous hydrogen stream and comprising an electrochemical compression unit (10), comprising an electrochemical compressor, configured to receive the gaseous hydrogen stream and perform an electrochemical compression, so to generate heat and discharge a gaseous hydrogen stream at higher pressure and / or with a higher purity, and a magnetocaloric liquefaction unit (20), comprising a magnetic refrigerator, fluidly coupled to the electrochemical compression unit (10) and configured to receive the gaseous hydrogen stream at higher pressure and / or with higher purity from the electrochemical compression unit (10). The magnetocaloric liquefaction unit (20) is configured to perform a magnetocaloric liquefaction, so to generate heat and discharge a liquified hydrogen stream.

This invention relates to a highly efficient self-pressurization system for converting liquid hydrogen into high-pressure gaseous hydrogen using a non-powered device. The system includes a liquid hydrogen heating and pressurization unit and a non-powered filling and displacement unit for high-pressure hydrogen. The heating and pressurization unit introduces external heat through a heat exchanger within a sealed liquid hydrogen storage tank, raising the temperature and pressure of the liquid hydrogen, while simultaneously connecting to an external cold energy recovery device to reclaim cold energy. The filling and displacement unit, via a non-powered filling pipe and valve connecting the storage tank and the hydrogen recovery device, uses filler material located within the hydrogen recovery device to enter the storage tank under gravity or magnetic force, directly displacing an equal volume of high-pressure gaseous hydrogen into the hydrogen recovery device. Compared to existing technologies, this invention has a simple structure, is easy to operate, and can efficiently, safely, and with low energy consumption obtain high-pressure gaseous hydrogen without the need for an external driving device.

This invention relates to the field of refrigeration technology, and particularly to a cryogenic propellant storage system and method. The system includes: a compressor compressing helium gas; a first portion of the compressed helium gas flows into a circulating refrigeration assembly, and a second portion flows into a heating assembly; the circulating refrigeration assembly cools the first portion of helium gas and uses it to cool liquid hydrogen stored in a liquid hydrogen tank and liquid oxygen stored in a liquid oxygen tank; the cooled first portion of helium gas is then returned to the compressor; the heating assembly uses the second portion of helium gas to heat liquid oxygen flowing out of the liquid oxygen tank and liquid hydrogen flowing out of the liquid hydrogen tank, obtaining gaseous oxygen and gaseous hydrogen, which are then transported to the engine; the heated second portion of helium gas is then returned to the compressor. This invention effectively utilizes the high-quality cooling capacity within the storage tanks, improving the efficiency of the circulating refrigeration system.

The present invention relates to a system for treating gaseous hydrogen, comprising an inlet (10a) for supplying gaseous hydrogen, a drying unit (30) with an active drying material for removing moisture from the supplied hydrogen, an adsorption unit (50) with an active adsorption material for adsorbing impurities from the dried hydrogen, and an outlet (10b) for drawing off treated hydrogen. According to the invention, the mass ratio between the active drying material and the active adsorption material is in the range of 1.5:1 to 50:1. The invention further relates to a plant comprising such a system for providing compressed treated gaseous hydrogen and a method for treating gaseous hydrogen.

Disclosed are a hydrogen tank and a method of operating the same. The hydrogen tank includes a tank vessel configured with an enclosed interior space for storing an admixture of carbon dioxide and gaseous hydrogen; and a tank port configured to fluidly contact the interior space of the tank vessel and including a semipermeable membrane, which is configured substantially permeable for the gaseous hydrogen and substantially impermeable for the carbon dioxide and is arranged to seal the tank vessel against the outside. The gaseous hydrogen can enter and leave the tank vessel through the tank port via the semipermeable membrane but carbon dioxide is kept in the tank vessel.

The invention relates to a method for treating a black mass mixture (SMG) to obtain pure substances, comprising at least the following steps: - Provision of the black mass mixture (SMG) (ST0); - Performing a hot steam treatment process (HP) (ST1) on the provided black mass mixture (SMG) by: --- Applying or mixing the provided black mass mixture (SMG) with superheated steam (D) (ST1.1) to effect a first chemical reaction (R1) forming at least one solid lithium compound (LV) and exhaust air (A) containing gaseous hydrogen fluoride (HFg), --- Discharge of the exhaust air (A) produced in the first chemical reaction (R1) (ST1.2), --- Combining this exhaust air (A) with an adsorber material (M) (ST1.3) to effect a second chemical reaction (R2) to form a solid (FS) comprising fluorspar, at least one by-product (N) and a purified gas stream (G), --- Separation of the solid (FS) formed in the second chemical reaction (R2) from the at least one by-product (N) (ST1.4) to obtain fluorspar as a pure substance; --- Discharge of the purified gas stream (G) formed in the second chemical reaction (R2) (ST1.5); and --- Removal of the solid lithium compound (LV) formed in the first chemical reaction (R1) as a component of a treated black mass mixture (bSMG) after completion of the hot steam treatment process (HD) (ST1.6).

This invention discloses a method and apparatus system for separating hydrogen and helium from ammonia synthesis tail gas. The apparatus system includes a primary alloy separation unit, a secondary alloy separation unit, a tertiary alloy separation unit, a circulating water unit, a chiller / heater unit, a compressor unit, a vacuum pump unit, and low-pressure and high-pressure buffer tanks. The alloy material in the alloy separation unit is a material capable of reversibly absorbing and releasing hydrogen. During selective hydrogen absorption, the hydrogen reacts chemically with the material to generate hydrides, storing the gaseous hydrogen in a solid state. High-purity hydrogen is released under changes in temperature and pressure. The method uses the alloy separation unit to progressively purify the ammonia synthesis tail gas in stages, separating and purifying hydrogen and helium to levels above 5N. This invention solves the problem of purifying and separating hydrogen and helium from a high-concentration hydrogen-helium mixture, and reduces the overall cost of ammonia synthesis, thus contributing to the national goal of carbon neutrality.

System (100, 200) for magnetocaloric hydrogen liquefaction comprising a hydrogen liquefaction unit (50) configured to receive a gaseous hydrogen (GH) stream to be liquefied and to discharge a liquified hydrogen (LH) stream, the hydrogen liquefaction unit (50) comprising: - at least one ortho-para conversion heat exchanger (10) comprising a metal organic framework (MOF) catalyst and configured to realize ortho to para spin-isomer conversion of the gaseous hydrogen (GH) stream, and - a magnetocaloric liquefaction unit (20) comprising a magnetic refrigerator and configured to perform a magnetocaloric liquefaction of the gaseous hydrogen (GH) stream.

This invention discloses a liquid hydrogen storage tank system and its operation method using a hydrogen fuel cell for energy recovery. The system includes a liquid hydrogen storage tank and a hydrogen fuel cell. The liquid hydrogen storage tank has a liquid hydrogen inlet and outlet and a gaseous hydrogen outlet. The outlet of the liquid hydrogen storage tank is connected to a circulation pipeline and a gaseous hydrogen outlet pipeline, respectively. A circulation pump and a chiller are connected to the circulation pipeline, respectively. The gaseous hydrogen outlet pipeline is sequentially connected to the hydrogen fuel cell and the chiller. This invention recovers the heat of combustion from the evaporation of gaseous hydrogen during long-term storage in the liquid hydrogen storage tank. On the one hand, it effectively reduces heat leakage from the external environment into the liquid hydrogen storage tank; on the other hand, the hydrogen fuel cell efficiently recovers the heat of combustion of gaseous hydrogen and converts it into part of the electrical energy of the chiller, providing long-term cooling for the liquid hydrogen storage tank, reducing the internal temperature of the liquid hydrogen storage tank, reducing liquid hydrogen evaporation loss, improving energy utilization efficiency, and achieving full utilization of energy.