213 results about "Compressed hydrogen" patented technology

A fuel cell system includes: a gas turbine having a combustion chamber and a turbine; a hydrogen fuel cell configured to generate electrical energy from input air and input hydrogen; an air flow path for providing air from a source of fresh air as input air to the fuel cell and to the combustion chamber; and a closed hydrogen loop for providing hydrogen from a liquid or compressed hydrogen source to the fuel cell and to the combustion chamber. The system further includes: a hydrogen recirculation loop receiving hydrogen from the liquid or compressed hydrogen source and hydrogen used by the fuel cell to provide cooled used hydrogen, The hydrogen recirculation loop combines the cooled used hydrogen with hydrogen from the liquid or compressed hydrogen source to provide to the fuel cell as the input hydrogen.

A system such as a refueling station capable of multi-mode dispensing is provided. The refueling station is configured to dispense a fuel such as hydrogen to vehicles in different modes, for example, in a form selected from liquid hydrogen, cryo-compressed hydrogen, and compressed hydrogen gases under different nominal pressures such as 35 MPa and 70 MPa. A method of making the same and a method of using are also provided.

The invention discloses a hydrogen-doped natural gas experiment method based on a fuel gas micro-grid. The method comprises the following steps: providing hydrogen and natural gas; mixing the provided hydrogen and natural gas; compressing the mixed hydrogen and natural gas in a compression area; the compressed hydrogen and the compressed natural gas are respectively conveyed to an urban hydrogen doping experiment area and a terminal user experiment area; pressurizing the hydrogen-doped natural gas in the low-pressure experimental area to the high-pressure experimental area by using a compressor in the urban hydrogen-doped experimental area; the hydrogen-doped natural gas is used by equipment in a terminal user experiment area, and hydrogen is provided by a pure hydrogen pipeline, a hydrogen cylinder group or a hydrogen long pipe trailer; natural gas is provided by a natural gas pipeline, a CNG tank car or an LNG tank car, according to the overall design method of the natural gas hydrogen doping experiment system, the quality of the natural gas hydrogen doping experiment can be systematically improved from multiple aspects of gas source supply, hydrogen doping gas mixing, hydrogen doping flow, hydrogen doping conveying, hydrogen doping pressurization and terminal users, and the natural gas hydrogen doping experiment system has the advantages of being simple in structure, safe, stable and high in functionality.

A system and method for operation for cryo-compressed hydrogen storage can include: an inner pressure vessel that includes an inner liner with a defined inner volume configured for para to ortho conversion of gaseous hydrogen before venting; an insulation layer, situated outside the inner pressure vessel; an outer wall; and a support structure situated between the inner pressure vessel and the outer wall.

The invention relates to a solid hydrogen storage system cooperating with a fuel cell to quickly respond, which comprises a solid hydrogen storage device, a vortex tube and a fuel cell, the vortex tube comprises a vortex tube hydrogen inlet, a vortex tube cold end and a vortex tube hot end, the vortex tube hydrogen inlet is connected with the outlet of the solid hydrogen storage device, and the vortex tube cold end is connected with the outlet of the solid hydrogen storage device. The cold end of the vortex tube is respectively communicated with an inlet of the solid hydrogen storage device and an inlet of the fuel cell through a cold end reversing valve; the hot end of the vortex tube is respectively communicated with an inlet of the solid hydrogen storage device and an inlet of the fuel cell through a hot end reversing valve; the vortex tube is used for compressing the hydrogen to heat or cool the hydrogen, the hydrogen enters the hydrogen storage device to be heated or cooled, convection is more sufficient and direct from the heat exchange angle, and therefore the problems that the heat exchange efficiency is insufficient, contact heat resistance exists on the surface, and heat exchange is limited by the heat conduction efficiency of the bottle body can be solved; and the response time of the hydrogen storage alloy can be greatly shortened.

The invention relates to the technical field of water electrolysis hydrogen production, and particularly discloses a proton exchange membrane water electrolysis hydrogen production device, which comprises an electrolytic tank, a hydrogen generator, a proton exchange membrane and a hydrogen generator, the pre-compression heat exchanger is used for carrying out primary cooling on the hydrogen generated by the electrolytic cell, and the pre-compression heat exchanger is sequentially connected with a compressor, a gas-liquid separator and a precision filter; the after-compression heat exchanger is used for cooling the compressed hydrogen again and is connected with a hydrogen storage tank; raw material water used for electrolysis of the electrolytic cell sequentially passes through the after-compression heat exchanger and the before-compression heat exchanger to exchange heat with hydrogen, so that the problems of large compressor operation load, low energy efficiency and serious system heat energy waste of traditional electrolytic cell hydrogen production equipment are solved.

Provided is a hydrogen gas supply method and system that can stably compress hydrogen gas regardless of whether the pressure is low or high and has excellent reliability. [Solution] The hydrogen gas supply method and supply system of the present invention comprises a low-pressure compressor 1 and a high-pressure compressor 2 that compress hydrogen gas, and the required pressure of the supply destination has a low-pressure region and a high-pressure region, and is a supply method of hydrogen gas that supplies to the supply destination in accordance with the required pressure, wherein the low-pressure compressor 1 is a piston crank type compressor and the high-pressure compressor 2 is a hydraulic compressor or a diaphragm type compressor, and when the required pressure of the supply destination is in the low-pressure region, hydrogen gas compressed by the low-pressure compressor 1 is supplied to the supply destination.

The spiral heat exchanger with the inner channel and the outer channel comprises a cooling liquid downstream sleeve, a cooling liquid countercurrent pipeline is arranged in the cooling liquid downstream sleeve in a penetrating mode, and a spiral baffle is arranged between the inner wall of the cooling liquid downstream sleeve and the outer wall of the cooling liquid countercurrent pipeline. A cylindrical compressed hydrogen spiral partition plate is arranged between the spiral baffles in a penetrating mode, the compressed hydrogen spiral partition plate is located between the cooling liquid downstream sleeve and the cooling liquid reverse flow pipeline, and a cooling liquid downstream pipeline is formed among the compressed hydrogen spiral partition plate, the cooling liquid downstream sleeve and the spiral baffles. And a high-temperature compressed hydrogen pipeline is formed among the compressed hydrogen spiral partition plate, the cooling liquid reverse flow pipeline and the spiral baffle. According to the utility model, the cooling liquid in the inner layer and the cooling liquid in the outer layer are respectively subjected to heat exchange with hydrogen in countercurrent and down-current modes, and meanwhile, the spiral pipeline design is utilized, so that the heat exchange area and the hydrogen retention time are effectively prolonged, and the heat exchange efficiency is improved on the premise of ensuring the safety.

A method of storing hydrogen gas in a subsurface formation may include compressing hydrogen gas by utilizing a compressor. This may create pressurized hydrogen gas that may be introduced into a subsurface formation through a wellhead to store as reserved hydrogen gas. The reserved hydrogen gas may be stored and maintained in the subsurface formations for a period. Another method in accordance with one or more embodiments of the present disclosure relates to recovering previously stored hydrogen gas from a subsurface storage for energy production. The method may include extracting reserved hydrogen gas from a subsurface formation. The extracted hydrogen gas may be purified by using at least a dehydrator, a pressure swing adsorption unit (PSA) and at least a temperature swing adsorption unit (TSA). The purified hydrogen gas may then be pressurized and used as a fuel for combustion in a turbine-generator unit.

The present invention relates to the technical field of aviation kerosene production, and particularly to a production method of aviation kerosene, which includes: gasifying and converting low-carbon raw materials to generate conversion gas; obtaining crude syngas through a water washing and dust removal process for the conversion gas; subjecting the crude syngas to acid gas removal treatment through a purification device to obtain purified gas containing carbon monoxide, hydrogen, and carbon dioxide; using clean energy in an electrolyzer to obtain hydrogen and oxygen, storing and compressing the hydrogen separately, and sending the oxygen to a gasification device for gasification reaction; generating Fischer-Tropsch synthesis feed gas by passing the compressed hydrogen and the purified gas through a Fischer-Tropsch reaction device; and generating aviation fuel, gasoline, and diesel by passing the Fischer-Tropsch synthesis feed gas through a green aviation fuel synthesis reactor, a secondary flash evaporator, and a distillation column. By using low-carbon raw materials as raw materials for bio-aviation kerosene, the present invention can reduce the dependence on fossil fuels and increase the production of bio-aviation kerosene, thereby enabling large-scale promotion.

The invention discloses a hydrogen storage tank pressure control system of a hydrogen production, hydrogen storage and power generation closed-loop system, and relates to the technical field of hydrogen production, hydrogen storage and power generation, and the hydrogen storage tank pressure control system comprises a pressure data acquisition module which is used for acquiring internal pressure data of a hydrogen storage tank so as to monitor the internal pressure data change of the hydrogen storage tank in real time; the hydrogen output line is used for outputting hydrogen in the hydrogen storage tank, the hydrogen input line is used for inputting hydrogen into the hydrogen storage tank, the control execution module is used for controlling in and out of the hydrogen in the hydrogen storage tank, and the compression module is used for compressing the hydrogen in the hydrogen input line and increasing the pressure. The hydrogen flow rate monitoring module is used for monitoring the flow rate of hydrogen in the hydrogen output line and monitoring the flow rate of hydrogen in the hydrogen input line. The execution module and the compression module are controlled based on the stepped control model, so that the hydrogen flow rate in the hydrogen output line and the hydrogen flow rate in the hydrogen input line are changed until the pressure in the hydrogen storage tank is balanced.

The present disclosure relates to a hydrogen leakage recovery system (1), the system (1) comprising: at least one turbomachinery unit (11); and a recovery unit (12) fluidically coupled with said at least one turbomachinery unit (11), the recovery unit (12) comprising: a separator (121) configured to receive a mixture of hydrogen and other compounds leaked from the turbomachinery unit (11), and to separate the hydrogen from the other compounds so as to obtain a hydrogen stream, and a compressor (123) fluidically coupled with the separator (121), the compressor (123) being configured to receive the hydrogen stream from the separator (121) and to compress the hydrogen stream so as to obtain a compressed hydrogen stream.

A fuel cell system comprising: a gas turbine (110) having a combustion chamber (114) and a turbine (116); a hydrogen fuel cell (102) configured to generate electrical energy from input air and input hydrogen; an air flow path for providing air from a source of fresh air as input air to the fuel cell (102) and to the combustion chamber; and a closed hydrogen loop for providing hydrogen from a liquid or compressed hydrogen source (104) to the fuel cell and to the combustion chamber (114); the system further comprising: a hydrogen recirculation loop (30) receiving hydrogen from the liquid or compressed hydrogen source (104) and hydrogen used by the fuel cell to provide cooled used hydrogen, the hydrogen recirculation loop further combing the cooled used hydrogen with hydrogen from the liquid or compressed hydrogen source to provide to the fuel cell as the input hydrogen.

The invention relates to a gas compression system (100) having a compressor (1) for compressing hydrogen gas, at least one recovery device (10) for recovering hydrogen gas escaping from the compressor (1) as leakage gas during compression, and a leakage gas return line (30), the invention relates to a gas compression system (100) having a leakage gas return line (4) which is designed to return leakage gas (2) recovered by at least one recovery device (10) into a position (5) upstream of a compressor (1) in the gas compression system (100) and / or into a suction line (3a) of a compressor stage (5a) of the compressor (1), the compressor (1) having a leakage gas discharge line (4) for discharging the leakage gas (2) from the compressor (1), wherein each recovery device (10) can be fluidly connected to a leak gas discharge line (4) and a leak gas return line (30) and each recovery device has at least one metal hydride tank (11a) which is thermally coupled to a respective heat exchanger (12a), and wherein each metal hydride tank (11a) has at least one hydride-forming metal alloy (15a), when heat is supplied or dissipated through the corresponding heat exchanger (12a), the hydride forms a metal alloy (15a) for cyclic release or absorption of the leaked gas (2). Wherein each recovery device (10) is designed to increase the leakage gas pressure (pL) in the leakage gas discharge line (4) at least to the pressure (p) in the location (5) of the gas compression system (100) and / or at least to the suction pressure (ps) in the suction line (3a) of the compressor stage (5a).

Methods and apparatus for hydrogen aircraft with cryogenic compressed storage are disclosed. An example fuel distribution system includes a vacuum vessel, a cryogenic vessel positioned within the vacuum vessel, the cryogenic vessel being part of a cryogenic compressed hydrogen delivery assembly, and at least one of a heater or a thermosyphon loop to maintain pressure of the cryogenic vessel.

A hydrogen gas supply method and the hydrogen gas supply system is provided, including a low-pressure compressor 1 and a high-pressure compressor 2 that compress hydrogen gas, in which a necessary pressure at a supply destination includes a low-pressure region and a high-pressure region and the hydrogen gas is supplied to the supply destination in accordance with the necessary pressure. The low-pressure compressor 1 is a piston crank type compressor. The high-pressure compressor 2 is a hydraulic compressor or a diaphragm type compressor. When the necessary pressure at the supply destination is in the low-pressure region, the hydrogen gas compressed by the low-pressure compressor 1 is supplied to the supply destination.

The invention provides a high-temperature rotational molding controlled-release cross-linked composition as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The high-temperature rotational molding controllable slow-release cross-linked composition disclosed by the invention is prepared from the following components in parts by weight: 100 parts of high-density polyethylene resin, 0.05 to 0.5 part of free radical slow-release initiator, 0.05 to 2 parts of allyl assistant cross-linking agent, 0.05 to 0.2 part of main antioxidant and 0.1 to 0.5 part of auxiliary antioxidant. Through a two-stage rotational molding process, crosslinking is slowly released and controllably initiated at a high temperature, so that the influence on a high-density polyethylene crystalline region is reduced while the ESCR performance is greatly improved, and relatively low hydrogen permeability is kept. The high-temperature rotational molding controllable slow-release cross-linked composition can be applied to a compressed hydrogen plastic inner container for a vehicle.

A sea-going cargo carrier having a primary driving-mechanism and one or more back-up engines comprises liquefied hydrogen (LH2) tanks 10, hydrogen boil-off gas (BOG) compressors 18, compressed hydrogen containers 22 to store the compressed hydrogen, and pipework 24 to supply the compressed hydrogen to the back-up engines. The compressors compress the BOG from the liquefied hydrogen tanks to provide compressed hydrogen. The primary driving mechanism can be one or more of an internal combustion engine, a hydrocarbon-fuel engine, or one or more sails. The cargo carrier can be a liquefied gas carrier or a goods carrier. When the cargo carrier is a liquefied hydrogen carrier, it can have liquefied hydrogen tanks which are able to provide hydrogen BOG as a back-up engine fuel source. The BOG compressors can compress the BOG from the liquefied hydrogen tanks to a pressure above 200 barg. The compressed hydrogen containers can be isotainers.

The present invention relates to a method for purifying at least one impurity and compressing hydrogen, comprising at least one thermal compression and cooling of the hydrogen to a temperature strictly below 0°C, either simultaneously or starting with one of the two, to a temperature and pressure combination such that said at least one impurity condenses sufficiently so that the remaining quantity of the impurity in the hydrogen is less than a predetermined value. The present invention also relates to a device specially designed to implement the method according to the invention. Abstract figure: Figure 1

The application is suitable for the technical field of seabed hydrogen storage, and provides a large-scale underwater constant-pressure hydrogen storage device, which comprises a hydrogen storage tank, a hydrogen supply network and a hydrogen transportation pipeline, and the hydrogen storage tank and the hydrogen supply network are connected through the hydrogen transportation pipeline; the hydrogen storage tank comprises a rigid gas storage tank and a composite suction caisson arranged at the bottom of the rigid gas storage tank; a central pipeline connected with the hydrogen transportation pipeline is arranged in the rigid gas storage tank; a seawater port for inflow or outflow of seawater is further arranged at the bottom of the rigid gas storage tank; a seawater filter for filtering seawater is further arranged in the seawater port; and a storage tank flexible membrane for preventing compressed hydrogen from contacting seawater is further arranged in the rigid gas storage tank; the application can comprehensively solve the key technical problems faced by large-scale seabed hydrogen storage, promote the development of underwater hydrogen storage technology in the direction of higher efficiency, higher safety and lower cost, and contribute to the sustainable development of the hydrogen energy industry.

The utility model discloses a counterweight forklift powered by a hydrogen fuel cell, which comprises a frame, a cab arranged above the frame, a hydrogen supply device arranged on one side of the cab, a transportation device arranged on the other side of the cab, and a counterweight arranged below the hydrogen supply device, a driving wheel set and a steering wheel set are arranged at the two ends of the frame respectively, steering wheels are arranged below the balance weight, the hydrogen fuel cell is arranged in the middle of the frame, a hydraulic station is arranged between the cab and the hydrogen supply device, and a gas-electricity module and an electric module are further distributed in the cab. The counterbalance forklift truck is efficient and environmentally friendly, zero-emission operation can be achieved in a pure hydrogen mode, switching of three energy supply modes can be supported through the gas-electricity module, energy consumption can be optimized according to different working conditions, efficiency and economical efficiency are both considered, the cabin for containing the compressed hydrogen tank is arranged, the maintenance cost of the compressed hydrogen tank is reduced, and the service life of the compressed hydrogen tank is prolonged. The capacity of the compressed hydrogen tank in the device is larger, so that the endurance time of the forklift is prolonged.

A hydrogen-fuelled aircraft 100 comprises a fuselage 118, wings 116A, 116B and four cylindrical elongate hydrogen storage tanks 112A-D mounted on the exterior of the fuselage. An aerodynamic fairing 114 forms a continuous air-washed surface of the aircraft together with a lower portion of the fuselage. The hydrogen storage tanks extend generally parallel to the fuselage and are contained between the fairing and the fuselage. First and second tanks (112A, 112B) are mounted adjacent first and second wings (116A, 116B) respectively and third and fourth tanks (116C, 116D) are mounted adjacent the first and second tanks respectively. The aircraft 200 provides for storage of a large volume of compressed hydrogen without compromising the volume of usable space within the fuselage. The aircraft is able to carry out flight missions comparable in range and payload to those of an equivalent conventionally-fuelled aircraft.

A hydrogen production apparatus for a wind turbine is provided, including an electrolytic hydrogen production unit for producing hydrogen gas from electrical energy generated by the wind turbine, a compressor unit for compressing the produced hydrogen gas, and a sensor unit fluidly connected to the compressor unit for detecting an oil contamination of the compressed hydrogen gas. Thus, an oil contamination of the hydrogen gas produced by the hydrogen production apparatus is continuously monitored. Further, oil contamination of the hydrogen gas is detected before the hydrogen gas is discharged by the hydrogen production apparatus.

The pressure vessel system can include: an inner tank, a jacket, a set of supports, and a set of tubes (a.k.a., fill tubes). The system can optionally include a set of mounts. The system can function to fluidly isolate a first chamber (e.g., interstitial vacuum chamber) between the jacket and the inner tank and a second chamber within the inner tank (e.g., storage chamber for cryo-compressed hydrogen). Additionally, the system can function to structurally support the inner tank while allowing relative motion between the inner tank and the jacket along an interface of a support, which can mechanically constrain the inner tank while allowing expansion of the inner tank within the first chamber (and / or deformation relative to the jacket).

The invention discloses a fuel cell hydrogen supply system in the technical field of hydrogen fuel cells. The fuel cell hydrogen supply system comprises a fuel cell stack, a hydrogen storage bottle, a first buffer tank and a second buffer tank, the hydrogen storage bottle is used for storing compressed hydrogen required by operation of the fuel cell stack, the hydrogen storage bottle is communicated with the fuel cell stack through a pipeline, and a pressure reducing valve, a first electromagnetic valve, a one-way valve, a first proportional electromagnetic valve and a first pressure sensor are sequentially arranged on the pipeline between the hydrogen storage bottle and the fuel cell stack; the first buffer tank is communicated with the fuel cell stack, a gas-water separator and a second electromagnetic valve are arranged on a pipeline between the fuel cell stack and the first buffer tank, the first buffer tank is connected with a third electromagnetic valve through a pipeline, and the third electromagnetic valve is used for discharging gas in the first buffer tank; the second buffer tank is connected in parallel to a pipeline between the hydrogen storage bottle and the fuel cell stack, and the second buffer tank is used for storing gas discharged to the fuel cell stack in the purging process. The scheme solves the problem of galvanic pile damage caused by anode air shortage or overlarge cathode and anode pressure difference.

A stable discharge pressure of compressed hydrogen gas generated from the electrolysis of water is achieved and maintained at the outlet of a "hybrid" multistage compression system comprising at least a first section comprising at least one centrifugal 5 compressor powered at least in part by electricity generated from at least one renewable energy source and a further section downstream of the first section, wherein the further section comprises at least one reciprocating compressor. 10 15 20 25 20 24 21 96 83 13 S ep 2 02 4 A B S T R A C T 2 0 2 4 2 1 9 6 8 3 1 3 S e p 2 0 2 4 5 1 0 1 5 2 0

A process for utilizing hydrogen gas output from at least one trailer may include forming hydrogen gas from liquid hydrogen stored in at least one trailer, and supplying the hydrogen gas from the trailer to a pipeline, a turbine, a liquefaction unit for subsequent liquefaction of the hydrogen gas, a fuel cell, and / or a compression system for compressing the hydrogen gas and subsequently liquefying the compressed hydrogen gas output from the compression system via a liquefaction unit connected to the compression system. An apparatus for utilizing hydrogen gas output from at least one trailer may be configured to perform embodiments of the process.

The invention is applicable to the technical field of seabed hydrogen storage, and provides a large-scale underwater constant-pressure hydrogen storage device which comprises a hydrogen storage tank, a hydrogen supply network and a hydrogen transportation pipeline, and the hydrogen storage tank is connected with the hydrogen supply network through the hydrogen transportation pipeline; the hydrogen storage tank comprises a rigid gas storage tank and a composite suction caisson arranged at the bottom of the rigid gas storage tank, a central pipeline connected with a hydrogen conveying pipeline is arranged in the rigid gas storage tank, and a seawater port used for seawater inflow or discharge is further formed in the bottom of the rigid gas storage tank. A seawater filter used for filtering seawater is further arranged in the seawater port, and a storage tank flexible film used for preventing compressed hydrogen from making contact with the seawater is further arranged in the rigid gas storage tank. And the underwater hydrogen storage technology is promoted to develop in a more efficient, safer and more economical direction, and contributions are made to sustainable development of the hydrogen energy industry.

Example systems, methods, and apparats for refueling hydrogen aircraft are disclosed herein. An example multiphase hydrogen refueling system includes a liquid hydrogen (LH2) tank coupled to at least one of a cryo-compressed hydrogen (CcH2) tank and a gaseous hydrogen (GH2) tank; a liquid nitrogen (LN2) tank; and a hydrant coupled to the LH2 tank, the CcH2 tank, the GH2 tank, and the LN2 tank, the hydrant including: a transfer line to refuel an aircraft with at least LH2, CcH2, or GH2; a purge valve to purge the transfer line using at least one of nitrogen (N2) from the LN2 tank or GH2 from the GH2 tank; and a GH2 return line to transmit evaporated GH2 back to the GH2 tank.

The present invention relates to an apparatus for producing liquefied hydrogen, the apparatus comprising: a hydrogen generator, such as an electrolyzer, configured to produce hydrogen; a liquefier; a feed line connecting a hydrogen outlet of the hydrogen generator to an inlet of a liquefier, the liquefier including a refrigerator having a circulation loop configured to supply cooling power and cool hydrogen from the feed line to liquefy the hydrogen, the apparatus comprises a buffer reservoir configured to store compressed hydrogen between a hydrogen generator and a liquefier, the liquefier configured to provide a cooling power and / or a liquefaction capability that can be changed between at least two levels, the apparatus comprising a determination mechanism for determining a fill level of the buffer reservoir, the device is configured to vary the cooling power and / or liquefaction capacity of the liquefier in accordance with the fill level of the buffer memory determined by the determination mechanism. The invention also relates to a method for producing liquefied hydrogen using the above apparatus.