85 results about "Compressed hydrogen" patented technology

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 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.

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.

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.

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.

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 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 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).

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.

This invention relates to a water electrolysis system for producing compressed hydrogen, the system comprising a water electrolysis cell stack, a multiphase pump disposed downstream of the electrolysis cell stack, and a hydrogen gas-liquid separator. The multiphase pump is disposed between the water electrolysis cell stack and the hydrogen gas-liquid separator. The invention also relates to a method for producing compressed hydrogen in a water electrolysis system, the method comprising: supplying deionized water or liquid electrolyte to the water electrolysis cell stack; producing hydrogen in the water electrolysis cell stack; compressing the generated hydrogen and a mixture of entrained deionized water or liquid electrolyte in the multiphase pump; and performing gas-liquid separation of the compressed generated hydrogen and the entrained deionized water or liquid electrolyte mixture in the hydrogen gas-liquid separator.

System and method for generating dried compressed hydrogen gas, comprising: - A compressor (E01), configured for: • receiving the hydrogen gas with water vapor under atmospheric or near atmospheric pressure, in particular from a storage space; • compressing the hydrogen gas; and • delivering compressed hydrogen gas with water vapor to a separator; and - Said separator (E02), configured for: • receiving the compressed hydrogen gas with the water vapor and the condensed liquid water from the compressor (E01); • separating the compressed hydrogen gas with the water vapor from the condensed liquid water; • delivering the compressed hydrogen gas to at least one adsorber (E08); and • delivering the condensed water to a drain (SUMP), - Said at least one adsorber (E08), configured for: • receiving hydrogen with the water vapor under pressure from the separator; • drying the hydrogen gas by adsorbing the water vapor; and • releasing the hydrogen under pressure.

The invention belongs to the technical field of hydrogen separation, and relates to a hollow fiber type electrically-driven proton exchange membrane hydrogen pump for hydrogen separation / compression, which is characterized in that the hollow fiber type electrically-driven proton exchange membrane hydrogen pump is formed by packaging one or more hollow fiber type proton exchange membrane electrodes, and hydrogen is separated / compressed from hydrogen-containing mixed gas at high purity under external voltage. Due to the hollow fiber type membrane electrode structure, the bundling packaging mode and the excellent pressure resistance, the specific surface area and the integration level of the proton exchange membrane hydrogen pump can be remarkably improved, and the application requirements of light-weight and large-scale hydrogen separation / compression are met.

The light-weight hydrogen centrifugal compressor comprises a compression box, and a gas inlet pipe and a gas outlet pipe are fixedly mounted on the outer surface of the compression box; the cooling mechanism is used for cooling the compressed hydrogen; the cooling mechanism comprises a compression sleeve, the compression sleeve is fixedly installed in an inner cavity of the compression box, an impeller is rotatably installed in an inner cavity of the compression sleeve, a turnover pipe is fixedly installed on the outer surface of the compression box and communicates with the inner cavity of the compression box, and a first connecting pipe is fixedly installed on one side of the compression sleeve; the first connecting pipe is fixedly connected with the air outlet pipe, and an inner cavity of the turnover pipe is fixedly installed on the cooling pipe. Cooling water in the cooling box circularly flows to cool compressed hydrogen in the air outlet pipe and the inner cavity of the air outlet pipe, and when hydrogen entering the inner cavity of the compression box needs to be cooled through the cooling pipe, the second connector and the third connector are connected with the two ends of the cooling pipe correspondingly, so that the cooling water passes through the inner cavity of the circulation pipe.

A compression apparatus includes at least one compression unit, a voltage applier, an anode end plate provided on an anode separator located at a first end in a direction of stacking, a cathode end plate provided on a cathode separator located at a second end in the direction of stacking, and first and second plates provided between the cathode end plate and the cathode separator located at the second end. The compression apparatus causes, by using the voltage applier to apply a voltage, protons taken out from an anode fluid that is supplied to the anode to move to the cathode via the electrolyte membrane and produces compressed hydrogen. The first plate has formed therein a first space in which to store a cathode gas containing the compressed hydrogen. The second plate is provided with a first manifold through which the cathode gas flows and a first communicating path through which to lead, to the first space, the cathode gas having flowed in from the first manifold.

Large scale exploitation of Solar energy is proposed by using floating devices which use solar energy to produce compressed hydrogen by electrolysis of deep sea water. Natural ocean currents are used to allow the devices to gather solar energy in the form of compressed hydrogen from over a large area with minimum energy transportation cost. The proposal uses a combination of well understood technologies, and a preliminary cost analysis shows that the hydrogen produced in this manner would satisfy the ultimate cost targets for hydrogen production and pave the way for carbon free energy economy.

A compressor includes at least one cell that includes an electrolyte membrane, an anode located on one main surface of the electrolyte membrane, and a cathode located on the other main surface of the electrolyte membrane; a metallic anode separator located on the anode; a cathode separator located on the cathode; and a voltage application unit for applying a voltage between the anode and the cathode, wherein the compressor causes, by using the voltage applier to apply a voltage, a proton extracted from an anode fluid supplied to the anode to move to the cathode and generates compressed hydrogen, and the compressor includes a controller for causing the voltage application unit to apply the voltage such that a voltage applied per unit cell is lower than a corrosion potential of the metallic anode separator.

The utility model relates to container technical field, concretely is a kind of compressed hydrogen cylinder formula container, solve the problem mentioned in the above background art, including box and box is equipped with door, the inside bottom of box is equipped with multiple track rods along its length direction, storage rack is slidably connected on track rod, and hydrogen cylinder is placed on storage rack, and is pushed along track rod, and the container that is equipped with hydrogen is placed in box, and the inside bottom of box is equipped with multiple track rods along length direction, and it is equipped with the storage rack that can slide on track rod, change the cumbersome loading mode of previous relying on forklift and manual forklift multiple transfer, manual auxiliary positioning. When loading the container that is equipped with hydrogen cylinder, just use forklift to insert container along the tail of box into box, then insert container support leg into corresponding storage rack slot, can push container along track rod, make it slide on track rod, easily move it to the inside appropriate position of box and place.

The invention discloses a compression hydrogen storage system and a control method thereof.The compression hydrogen storage system comprises a gas source, a compressor, a plurality of hydrogen storage facilities arranged in a graded mode, a pressure detection module, a control valve and a control system, and the control system sets sequentially-decreased target shutdown pressure for all the hydrogen storage facilities and sets the maximum compression ratio threshold value; by monitoring the air inlet / outlet pressure of the compressor and the pressure of each hydrogen storage facility in real time, dynamically judging the current working condition, intelligently controlling the opening and closing of each control valve and selecting a proper hydrogen storage facility to inflate, the actual compression ratio in the compression process is ensured not to exceed the maximum compression ratio threshold all the time. The problem that the compression ratio is too high due to air inlet pressure fluctuation can be effectively restrained, the heating value and abrasion of the compressor are remarkably reduced, the service life of equipment is prolonged, and the safety and economical efficiency of operation of the hydrogen refueling station are improved.

The utility model provides a compressor hydrogen environment testing device, which particularly relates to the technical field of compressor testing and comprises a hydrogen supply module, a compressor testing module, a safety control module and a recycling module. The hydrogen supply module is responsible for conveying hydrogen to the compressor test module; the compressor test module is connected with the hydrogen supply module and used for compressing hydrogen to test compressor performance; the safety control module is connected with the compressor test module, regulates and controls the air pressure in the hydrogen conveying process and extinguishes sparks in the hydrogen conveying process; the recycling module is connected with the compressor testing module and the safety control module, and recycling of hydrogen is achieved. The device solves the safety problem that the performance of the compressor cannot be tested in the hydrogen environment, the test safety is enhanced, the test period is shortened, and the cost is reduced.

A multi-role pump and a system such as a refueling station comprising such a pump are provided. The multi-role pump is configured to transfer a liquefied fuel such as hydrogen from a delivery truck, fuel the liquefied fuel in liquid form to a first vehicle, and boost the liquefied fuel for a second vehicle with various higher pressure onboard storage systems, while minimizing liquid fuel boil-off loss. The system 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 pressures such as 35 MPa and 70 MPa. A method of making the same and a method of using are also provided.

This compressor unit comprises a compressor part configured from a reciprocating compressor mechanism that compresses hydrogen gas, a cooler, a preheater, a spillback unit, an adjustment means, and a control unit. A suction channel is provided that comprises a first routing section that passes through the preheater and a second routing section that does not pass through the preheater. The adjustment means adjusts the flow rate of hydrogen gas that passes through the first routing section and adjusts the flow rate of hydrogen gas that passes through the second routing section. The control unit controls the adjustment means such that the suction temperature of the compressor part falls within a preset temperature range. The preset temperature range is higher than a standard temperature based on the liquefaction temperature of air.

This invention relates to the field of underground reservoir site selection technology, specifically to a method for selecting underground compressed hydrogen energy storage sites. The method includes: collecting multi-source borehole data from various candidate sites and extracting microscopic lithological characteristics, macroscopic stratigraphic characteristics, and parameter correlation characteristics; constructing a geological framework model based on the macroscopic stratigraphic characteristics, using data reflecting microscopic lithological characteristics and parameter correlation characteristics as soft data to generate several heterogeneous stochastic geological models; selecting several of these models as representative models and performing multi-physics coupled numerical simulations to obtain a series of performance index sets; quantifying the uncertainty of each performance index set and using a multi-objective optimization ranking method to comprehensively score and rank each candidate site; this method enables full utilization of multi-source borehole data, considers geological uncertainties, allows for high-fidelity stochastic geological modeling and simulation, and enables quantitative assessment of the performance and risk of multiple candidate sites.

The invention discloses a methanol pyrolysis gas engine system, a vehicle and an engine system control method, and the methanol pyrolysis gas engine system comprises a methanol pyrolysis assembly, a first compression assembly, a second compression assembly, a third compression assembly and an engine assembly. The methanol cracking assembly is used for cracking methanol to generate hydrogen; the first compression assembly is connected with the methanol cracking assembly and is used for receiving and compressing hydrogen; the second compression assembly is connected with the first compression assembly in an on-off manner and is used for receiving and compressing hydrogen; the third compression assembly is connected with the second compression assembly in an on-off manner and is used for receiving and compressing hydrogen; the first compression assembly, the second compression assembly and the third compression assembly are all connected with a combustion chamber of the engine assembly and used for receiving hydrogen. According to the methanol pyrolysis gas engine system, hydrogen obtained through methanol pyrolysis can be pressurized according to the working condition, and therefore the injection requirement is met.

The system can include: a heat exchanger, a set of valves, a sensor suite, and a controller The system can optionally include or be used with a catalyst, a set of barriers, and / or an enclosure. However, the system can additionally or alternatively include any other suitable set of components. The system functions to facilitate cooling of a pressurized fluid (e.g., high pressure hydrogen gas). Additionally or alternatively, the system can function to catalyze fluid state change (e.g., hydrogen spin conversion, etc.) within the pressurized fluid. For example, the system can be used to convert hydrogen from a high-pressure gaseous hydrogen (GH2) state or high-pressure supercritical hydrogen (ScH2) state to the cryo-compressed hydrogen (CcH2) state without hydrogen liquefaction (fluid state transition to liquid hydrogen, LH2).

An apparatus for filling a vessel with cryogenic compressed hydrogen is disclosed herein. The apparatus includes a filler controller configured to: vent the vessel based on a pressure of the vessel prior to a filling process; fill a mixing tank with at least cryogenic compressed hydrogen based on the pressure of the vessel and a pressure of the mixing tank, wherein the mixing tank is connected upstream of the vessel and is configured to include cryogenic compressed hydrogen; initiate the filling process of the vessel; adjust a temperature of the mixing tank in response to a temperature of the vessel not satisfying a target temperature of the vessel during the filling process, wherein the temperature of the mixing tank will be adjusted based on an increase or decrease in a flow of supercritical hydrogen; and end the filling process in response to the pressure of the vessel satisfying a target pressure of the vessel.

The utility model provides an exhaust valve of a hydraulic system of a hydraulic drive type hydrogen compressor, and belongs to the field of hydrogen compressors. The problems that a large compression space exists in the space, close to the piston direction, of the air valve and the cylinder head, and the clearance volume is affected are solved. The device comprises a valve sleeve which is fixed at an exhaust port of a cylinder head; the inner sleeve is arranged in the valve sleeve and can move in the axial direction in the valve sleeve; the locking sleeve is connected with the valve sleeve and is used for locking the inner sleeve; and the valve plate assembly is arranged in the inner sleeve and used for controlling exhaust. The device is mainly used for exhausting compressed hydrogen.

The invention relates to the technical field of underground reservoir site selection, in particular to a compressed hydrogen energy storage underground reservoir site selection method, which comprises the following steps: collecting multi-source drilling data of each candidate reservoir site, and extracting microscopic lithologic characteristics, macroscopic stratum characteristics and parameter correlation characteristics; constructing a geological architecture model according to the macroscopic stratum characteristics, and generating a plurality of heterogeneous random geological models by taking data reflecting the microcosmic lithologic characteristics and the parameter correlation characteristics as soft data; selecting a plurality of models as representative models, and performing multi-physics field coupling numerical simulation to obtain a series of performance index sets; performing uncertainty quantification processing on each performance index set, and performing comprehensive score sorting on each candidate library address by adopting a multi-objective optimization sorting method; according to the method, multi-source drilling data can be fully utilized, geological uncertainty is considered, high-fidelity random geological modeling and simulation can be carried out, and quantitative evaluation can be carried out on the performance and the risk of a plurality of candidate library addresses.