191 results about "Hydrogen compression" patented technology

The invention provides an electro-hydraulic servo pump control method and system for controlling hydrogen compression based on fuzzy nerve, and relates to the technical field of hydrogen compression, and the method comprises the steps that the current state of a hydraulic cylinder controlled by an electro-hydraulic servo pump is determined, and an input control variable is obtained; determining an output control variable, establishing a fuzzy control rule, and dividing a basic discourse domain; performing composite defuzzification, and obtaining a corrected weight coefficient through a feedforward neural network; the discrete rule amplitude correction factor and the weight coefficient correction are dynamically optimized and corrected; neural network training is established, a loss function evaluation model is utilized, and hydrogen compression control is achieved through a double-buffering mechanism. Fuzzy PID control is adopted, composite defuzzification is carried out according to the real-time state change of a system in combination with fuzzy logic, a membership function output by the fuzzy PID is divided according to regions, a control signal of a driver is synthesized, and hydrogen compression control is achieved; system output is adjusted according to different working conditions, power loss is reduced, and system control precision is improved.

The utility model discloses a booster pump of a hydrogen compressor, which comprises a base, and a hydrogen compression cylinder, a driving system and a balance gas tank are arranged on the base. The driving system drives a piston in the hydrogen compression cylinder to move back and forth to compress hydrogen in the cylinder body; the hydrogen compression cylinder is a composite cylinder body; two independent compression chambers are symmetrically arranged in the hydrogen compression cylinder, the balance gas tank is used for balancing the two compression chambers, and a gas inlet and a gas outlet which are communicated with the compression chambers are formed in the hydrogen compression cylinder; and one-way valves are arranged at the air inlet and the air outlet, and efficient compression of hydrogen can be achieved through the double compression cavities which are symmetrically arranged.

The invention discloses a standby power supply system, and relates to the technical field of transformer substation power supply, a hydrogen production module is used for producing hydrogen by using commercial power or renewable power and then storing the hydrogen in a high-pressure gas storage tank of a hydrogen storage module, and the hydrogen storage module is provided with a one-way valve for the hydrogen to pass through in one way and a gas compressor for compressing the hydrogen to realize hydrogen conveying; after hydrogen stored in the hydrogen storage module is subjected to power generation through a fuel cell through the power generation module, the hydrogen is input into a storage battery pack of an uninterruptible power supply system of the transformer substation, and in the whole process, the control module detects the state of a main power supply and controls starting and stopping of the power generation module. The hydrogen production rate of the hydrogen production module and the hydrogen storage pressure of the hydrogen storage module are controlled, only water is generated in the power generation process, harmful emission is avoided, direct current generated by the fuel cell is directly matched with a UPS storage battery direct current bus, the response speed is high, conversion loss is reduced, the energy utilization efficiency is improved, the system automation degree is high, and the operation and maintenance cost is low.

According to the metal hydride hydrogen compression device for the laboratory and the using method, in the scheme, when hydrogen filling is needed, an external hydrogen cylinder is connected with a hydrogen inlet connector, and hydrogen enters a booster jar through a one-way valve, the third end of a first three-way valve and a second three-way valve; a pressure sensor at the second three-way valve is used for detecting the pressure of gas in the pressurizing tank, hydrogen is absorbed by the hydrogen storage alloy powder after entering the pressurizing tank, and hydrogen filling of the device is completed; when the pressurizing tank needs to release hydrogen, the pressurizing tank is heated through the heating sleeve, the hydrogen storage alloy powder can release hydrogen, after the temperature and pressure in the pressurizing tank reach certain numerical values, the ball valve is opened, the hydrogen is connected with an external buffer tank through the second three-way valve, the second end of the first three-way valve and the hydrogen outlet connector, and hydrogen release of the device is completed.

The invention discloses a diaphragm compressor for gas production, and relates to the technical field of wind power hydrogen production. The diaphragm compressor for gas production comprises a base, a motor, a cylinder body and a cylinder cover which are arranged on a diaphragm compressor body, a piston and an oil distribution disc are arranged in the cylinder body, a diaphragm cavity air cylinder and a diaphragm are arranged in the cylinder cover, and an air suction pipe and an exhaust pipe are arranged at the end of the cylinder cover. The diaphragm compressor for gas production further comprises a water vapor removal mechanism arranged at an inlet of the gas suction pipe. According to the diaphragm compressor for gas production, water vapor in hydrogen can be conveniently condensed, removed, discharged and collected, meanwhile, hydrogen escape is avoided, the hydrogen compression quality is guaranteed, hydraulic oil in the cylinder body can be cooled, the use performance of the hydraulic oil is guaranteed, the reliability and performance of a system are guaranteed, and the service life of the system is prolonged. And the diaphragm and other sealing elements can be damaged by high temperature, so that the use effect and the service life are ensured.

According to the gas-liquid mixing hydrogen refueling station system with the cooling capacity recovery and gradient utilization functions, flash steam of the low-temperature liquid hydrogen storage tank is collected and stored in the low-temperature hydrogen storage tank, the cooling capacity of the flash steam is fully utilized, cooling capacity is provided for the heat exchanger, high-pressure hydrogen is cooled, the cooling capacity of the low-temperature flash steam of the liquid hydrogen is fully utilized, and the cooling capacity of the low-temperature flash steam of the liquid hydrogen is fully utilized. Energy gradient utilization of cooling capacity is achieved, and loss of extra energy in the hydrogen refueling station is reduced; the flash steam obtained after heat exchange is further used for hydrogen compression, and reutilization of the low-temperature liquid hydrogen flash steam is achieved; the flash steam after heat exchange is pressurized and then cooled by using the cooling capacity of the high-pressure liquid hydrogen, and meanwhile, the heating gasification of the high-pressure liquid hydrogen is realized, namely the gasification of the pressurized liquid hydrogen in the liquid hydrogen refueling station and the cooling of a gas hydrogen pressurization process in the liquid hydrogen refueling station are coupled for heat exchange, so that the utilization efficiency of the heat and the cooling capacity is greatly improved; an external vaporizer is not needed for high-pressure liquid hydrogen gasification, an external cooler is not needed in the gas-hydrogen pressurization process, and energy consumption is greatly reduced.

The invention belongs to the technical field of hydrogen compressor supervision, and particularly relates to a circulating hydrogen compressor online monitoring system based on data analysis, which comprises a multi-parameter monitoring transmission module, an intelligent analysis module, an early warning mechanism triggering module and an operation supervision end, the multi-parameter monitoring and transmitting module is used for monitoring operation of the recycle hydrogen compressor, the intelligent analysis module is used for processing and analyzing all collected parameter data, an alarm is given out when it is recognized that the operation state of equipment is abnormal or potential faults exist, and the reliability and safety of operation of the recycle hydrogen compressor are improved; operation inspection is conducted on all the sensors through the sensor inspection and judgment module so as to judge the abnormal operation probability of each sensor, and the monitoring influence evaluation module comprehensively analyzes the influence degree on online monitoring of the recycle hydrogen compressor based on the operation conditions of all the sensors, so that effective monitoring of the recycle hydrogen compressor is guaranteed; and the operation safety and stability of the circulating hydrogen compressor are further improved.

The invention relates to the technical field of hydrogen storage alloys, in particular to a Ti-based hydrogen storage alloy and a preparation method and application thereof. The chemical formula of the Ti-based hydrogen storage alloy is TibZr (1.02b) CrcMn (1.6 c) Fe 0.4, b is larger than or equal to 0.92 and smaller than or equal to 0.95, and c is larger than or equal to 1.0 and smaller than or equal to 1.2. According to the invention, Ti or Cr is doped into a Ti0. 92Zr0. 1Cr1. 0Mn0. 6Fe0. 4 alloy matrix, and regulation and control of unit cell parameters and electronegativity are realized by means of alloying, so that the hydrogen compression material has a higher compression ratio, and the alloy crystal structure is stable, and has more excellent activation performance, longer cycle life and higher cycle stability.

The invention discloses a hydrogen-coupled green methanol production system and method, and a green methanol product is obtained through the procedures of gasification, purification, methanol synthesis, methanol rectification and the like. The hydrogen-coupled green methanol production system comprises a gas making unit, a purification unit, a methanol synthesis unit and a methanol rectification unit, the gas making unit is a biomass gasification unit, the biomass gasification unit comprises a normal-pressure circulating fluidized bed, the normal-pressure circulating fluidized bed gasifies a biomass raw material to generate crude synthesis gas, the purification unit is used for purifying the crude synthesis gas, and the methanol rectification unit is used for rectifying the crude synthesis gas. The hydrogen compression unit is connected in front of the methanol synthesis unit, the hydrogen compression unit is used for providing hydrogen, the methanol synthesis unit is used for synthesizing synthesis gas and hydrogen into crude methanol, and the methanol rectification unit is used for rectifying the crude methanol into refined methanol. The method can promote the resource utilization of biomass materials, achieves the purposes of energy conservation, emission reduction and environmental protection, meets the current requirements of environmental protection, energy conservation and low-carbon economy, and is beneficial to green and sustainable development.

The invention provides a distributed control system and method for a liquid hydrogen refueling station, and relates to the technical field of intelligent control, and the system comprises a fault diagnosis and early warning module which is used for monitoring the operation state and technological parameters of all equipment of the liquid hydrogen refueling station in real time, and when abnormal conditions or potential risks are detected, the abnormal conditions or potential risks comprise equipment faults and technological parameter overrun, and the fault diagnosis and early warning module is used for monitoring the operation state and technological parameters of all equipment of the liquid hydrogen refueling station; an early warning signal is sent out, and corresponding processing measure suggestions are generated; and the distributed control node module is used for controlling specific equipment or areas in the liquid hydrogen refueling station and comprises liquid hydrogen storage equipment, hydrogen compression equipment, a hydrogen refueling machine and safety monitoring equipment. According to the invention, through integration of monitoring, diagnosis, control, analysis and self-adaption functions, the operation efficiency, safety and intelligent management capability of the liquid hydrogen refueling station are improved, and automatic generation of fault early warning and optimization suggestions and automatic adjustment of a control scheme are realized.

The invention discloses a wind-solar complementary hydrogen production and energy storage comprehensive energy utilization system, which comprises an energy control center, a seawater desalination device, a hydrogen production device, a hydrogen compression device, a hydrogen storage device, a hydrogen fuel cell, a wind generating set and a photovoltaic power generation assembly, and is characterized in that the output end of the wind generating set and the output end of the photovoltaic power generation assembly are connected with a micro-grid; an outlet of the seawater desalination device is communicated with a water inlet of the hydrogen production device, a hydrogen outlet of the hydrogen production device is communicated with an inlet of the hydrogen storage device through the hydrogen compression device, and an outlet of the hydrogen storage device is communicated with a hydrogen inlet of the hydrogen fuel cell. And the energy control center is connected with the seawater desalination device, the hydrogen production device, the hydrogen compression device, the hydrogen storage device and the hydrogen fuel cell. The system can realize wind-solar complementary power generation and hydrogen energy storage.

An electrochemical hydrogen compression system comprises a hydrogen compression stack having a unit cell including an electrolyte membrane, an anode disposed on one surface of the electrolyte membrane, and a cathode disposed on another surface of the electrolyte membrane, and that supplies a hydrogen gas to the anode, and delivers from the cathode the hydrogen gas which has been compressed, an electrical power source device that applies a voltage to the hydrogen compression stack, a hydrogen supply device that supplies the hydrogen gas to the hydrogen compression stack, a storage device that stores the hydrogen gas output from the hydrogen compression stack, and a return flow path that returns the hydrogen gas output from the hydrogen compression stack to the hydrogen supply device, wherein a hydrogen storage tank that stores the hydrogen gas is provided in the return flow path.

Disclosed is a variable volume hydrogen container or hydrogen compressor including a variable vessel configured to expand due to hydrogen filling and to compress or discharge the hydrogen while contracting, a pressure vessel configured to receive the variable vessel, at least one of opposite ends of the pressure vessel being open, a vessel wire wound around the pressure vessel in a radial direction, a vessel cap configured to seal the at least one open end of the pressure vessel, a vessel frame configured to support a vessel assembly constituted by the vessel cap and the pressure vessel, a frame wire wound around the circumference of the vessel frame, an embrittlement blocking member disposed so as to overlap the vessel cap, the embrittlement blocking member being configured to block hydrogen from penetrating into the vessel cap, and a transmitted hydrogen discharge hole configured to discharge hydrogen to the outside.

The invention discloses a water electrolysis hydrogen production and hydrogen compression function combined electrolytic cell, and relates to the technical field of hydrogen energy. The problems of noise, vibration, poor economical efficiency, easiness in damage, difficulty in maintenance and the like existing in mechanical compression in hydrogen compression are solved, hydrogen preparation and compression functions are performed at the same time, the equipment complexity is reduced, and the hydrogen preparation and compression efficiency is improved. The electrolytic bath comprises a PEM electrolyzed water part, a gas rectifying plate and an electrochemical hydrogen compression part which are sequentially connected in series in the axial direction; the PEM electrolyzed water part comprises a first end plate, a first anode plate, an electrolyzed water membrane electrode and a first cathode plate which are sequentially connected in series along the axial direction; and the electrochemical hydrogen compression part comprises a second anode plate, an electrochemical compression membrane electrode, a second cathode plate and a second end plate which are sequentially connected in series along the axial direction. The performance of the hydrogen production system is improved.

The invention relates to an ionic liquid circulating and unpowered jet liquid supplementing device of an ionic liquid hydrogen compressor. The ionic liquid circulating and unpowered jet liquid supplementing device comprises a hydrogen pressure cylinder, a gas-liquid separator and an ionic liquid circulating system, the hydrogen pressure cylinder comprises a nozzle and a gas compression cavity; the ionic liquid circulating system comprises a pressure reducing valve, an ionic liquid box and a proportional valve; high-pressure gas-liquid mixed fluid discharged from a compression outlet of the hydrogen pressure cylinder enters the gas-liquid separator, separated pure hydrogen is stored in the hydrogen storage bottle, and pure ionic liquid obtained through separation enters the nozzle through the proportional valve after being decompressed to safe pressure through the pressure reducing valve and is sprayed back into a gas compression cavity of the hydrogen pressure cylinder after being atomized by the nozzle. And the ionic liquid leaked from the pressure reducing valve is poured back into the ionic liquid box. According to the invention, high pressure in the gas-liquid separator is reduced to a certain extent and then is directly sprayed into the gas cavities of the hydrogen compressors at all levels in a spray form through the nozzles, so that the effects of cooling, dissipating heat and improving the energy efficiency are achieved.

The invention discloses a hydrogen variable-stage compression reciprocating piston type compressor unit, and relates to the technical field of hydrogen compression. Comprising a rack, a first-stage reciprocating piston type compressor, a second-stage reciprocating piston type compressor and a third-stage reciprocating piston type compressor which are mounted at the bottom of the rack in the Y-axis direction, and a variable-stage air guide pipe group mounted at the air inlet end of a cylinder body of the first-stage reciprocating piston type compressor, and a second-stage air inlet pipe is arranged between the air outlet end of the air storage tank of the first-stage reciprocating piston type compressor and the air inlet end of the cylinder body of the second-stage reciprocating piston type compressor. The high-pressure hydrogen is allowed to be directly switched into the low-pressure stage, the middle-pressure stage and the high-pressure stage of the compressor unit through dynamic dispatching of the valves of the variable-stage gas guide pipe set, so that the residual high-pressure potential energy of the trailer is directly converted into effective initial work of a compression system, and the fatal energy fault of first pressure relief and then low-pressure full-pressure-difference compression in a traditional scheme is avoided; potential energy wasted by the pressure reducing valve originally is directly inherited and utilized by the compressor.

The utility model discloses a mixed hydrogen source hydrogenation gas filling system which comprises a photovoltaic power generation unit, an electrolyzed water hydrogen production unit, a natural gas reforming hydrogen production unit, an electrolyzed water hydrogen compression and storage unit, a natural gas reforming product hydrogen compression and storage unit, a hydrogen filling unit, a natural gas compression and storage unit, a natural gas filling unit and a hydrogen long pipe trailer, based on the current technical situations of hydrogen production and hydrogen filling, the utility model provides a hydrogenation gas filling system of various mixed hydrogen sources such as water-collecting electrolysis hydrogen production, natural gas reforming hydrogen production and long-tube trailer hydrogen transportation, so that the problems of unstable hydrogen source and high hydrogen cost of the current hydrogen refueling station with a single hydrogen source can be solved, the safe, economical and stable operation of the hydrogen refueling station is facilitated, and the safety and the reliability of the hydrogen refueling station are improved. The hydrogen refueling station development is promoted. The hydrogen using reliability of the hydrogen refueling station can be improved, the hydrogen source cost is reduced, the running safety and economy of the hydrogen refueling station are improved, and the development of the hydrogen refueling station is promoted.

The utility model belongs to the technical field of coal tar hydrogenation process, and relates to a sealing gas conveying system for sealing a circulating hydrogen compressor, which comprises a conveying pipeline and heating equipment, the conveying pipeline is connected with the outlet end of the compressor and used for conveying sealing gas. The heating device is arranged on the conveying pipeline and used for heating the sealing gas. According to the utility model, the process gas at the outlet end of the compressor is heated through the additionally arranged heating equipment, so that the process gas can be conveniently heated to the required temperature to serve as sealing gas, the load of the compressor does not need to be increased, unnecessary energy consumption of the compressor is avoided, and in addition, in the actual operation process, the energy consumption is reduced. The load of the compressor can be reduced according to actual process requirements, so that the process gas temperature at the outlet end of the compressor is reduced, and energy conservation and consumption reduction of the compressor are realized.

The invention discloses an efficient hydrogen compression device, and belongs to the technical field of hydrogen compression, the device comprises a supporting table, and further comprises a driving device arranged in the middle of the top end of the supporting table; the compression sleeve shells are arranged at the two ends of the driving device, and sealing covers are arranged at the outer ends of the compression sleeve shells; according to the technical scheme, the judgment mechanism and the alarm mechanism are arranged, when the outer side part of the compression diaphragm is broken, internal quantitative hydraulic oil can enter the inner cavity of the sealing cover, and the reduction of the hydraulic oil can release part of the judgment mechanism, so that internal gas can be pushed to be guided into the alarm mechanism; the alarm part of the alarm mechanism senses the preset pressure alarm value and then gives an alarm, so that an operator is alarmed in the first time that one side of the compression diaphragm is broken and needs to be shut down and maintained in time, subsequent oil-gas separation operation is facilitated, and the labor intensity of the operator is greatly reduced.

The application relates to the field of hydrogen production, in particular to a hydrogen compression device which comprises a shell, the shell is provided with an air outlet pipe for air outlet and an air inlet pipe for air inlet, a sealing nut is sleeved on the air outlet pipe and the air inlet pipe in a threaded mode, a flexible sealing ring is also sleeved on the air outlet pipe and the air inlet pipe, the flexible sealing ring is pressed on the shell by the sealing nut, an air-tight cover is further arranged on the shell, the air-tight cover wraps the connecting positions of the air outlet pipe and the shell and the air inlet pipe and the shell, a compensation runner is rotationally arranged in the air-tight cover, an air guide pipe is further arranged in the air-tight cover, the air guide pipe is used for guiding the hydrogen leaked from the air outlet pipe and the air inlet pipe to the compensation runner, a plurality of rotating blocks are arranged on the sealing nut, the compensation runner drives the sealing nut to rotate and press the flexible sealing ring. The application has the effect of improving the air tightness of the air-tight device.

The utility model provides an exhaust oil removal device of a mechanical piston type compressor, and belongs to the field of high-pressure hydrogen oil removal. The problem that the filter is broken and cannot be used due to large pressure difference inside and outside the filter when the hydrogen compression system is started is solved. A separation cavity and an oil collection cavity are formed in the separation cylinder; the main filter is arranged in the separation cavity; the air distribution valve is provided with a normally open outlet and a partial pressure outlet, the normally open outlet is connected with the interior of the main filter, and the partial pressure outlet is connected with the auxiliary filter; and after the gas distribution valve is subjected to the acting force of compressed gas, the pressure distribution outlet is gradually closed. The device is mainly used for high-pressure hydrogen oil removal.

The invention discloses an electric hydrogen production and hydrogen compression multiplexing integrated system, and relates to the technical field of hydrogen energy. The problems that linkage of a water electrolysis hydrogen production system and a hydrogen compression system is insufficient, the equipment integration degree is insufficient, and economical efficiency is poor are solved. The system comprises a water source module, a water or low-pressure hydrogen pretreatment module, a reuse electrolytic bath, a low-pressure hydrogen storage module, a high-pressure hydrogen storage module and a power supply, the reuse electrolytic bath comprises an anode chamber and a cathode chamber which are separated by a proton exchange membrane; the anode chamber comprises a PEM anode chamber and an EHC anode chamber which are separated by an anode separation layer; an inlet of the water or low-pressure hydrogen pretreatment module is respectively communicated with outlets of the water source module and the low-pressure hydrogen storage module, and an outlet is selectively communicated with the PEM anode chamber or the EHC anode chamber; the cathode chamber is selectively communicated with the inlet of the high-pressure hydrogen storage module or the inlet of the low-pressure hydrogen storage module; the power supply can supply power to the multiplex electrolytic cell. The method is used for improving the hydrogen production performance.

Described herein are interpenetrating crosslinked ionomeric polymer network membranes comprising bis-arylimidazolium ionomeric polymers, a second polymer, and a cross-linking moiety, and methods of making the interpenetrating crosslinked ionomeric polymer network membranes. Such interpenetrating crosslinked ionomeric polymer network membranes are used in electrochemical devices such as fuel cells, electrolyzers, hydrogen pumps, thermoelectrochemical hydrogen pumps, electrochemical hydrogen compressors, redox flow batteries, and other electrochemical devices, and have application in fuel cells, water electrolyzers, hydrogen compression, hydrogen decompression, water purification, and battery products.

The invention discloses a power grid regulation and control system and method based on hydrogen energy storage. The system comprises an electrolytic hydrogen production device, a photovoltaic power generation device, a hydrogen compression device, a hydrogen storage tank, a hydrogen fuel power generation device, a battery energy storage device and a central controller. The method comprises the following steps of obtaining current power supply power and historical power supply data of a power grid system, calculating corresponding regulation and control parameters, and performing power regulation and control on the power grid system by using energy supply equipment and energy storage equipment according to the current power supply power and the regulation and control parameters; the regulation and control parameters comprise an energy supply power threshold value and an energy storage power threshold value. The problems that the power supply power of an existing power grid system cannot be matched with the power utilization demand of a user in real time, and power grid regulation and control are not accurate and stable enough are solved, the current power supply power and the historical power supply data of the power grid system are obtained, the corresponding regulation and control parameters are calculated, and multi-stage precise regulation and control of the power of the power grid system are achieved; and the high matching between the power supply capability of the power grid and the power demand and the continuous stability of the system are ensured.

Mobile Hydrogen Dispensing Station This description relates to a mobile hydrogen dispensing station (1) comprising a trailer (2), an enclosure (5) attached to the trailer (2), and, within the enclosure (5): – at least one hydrogen storage and dispensing unit; – at least one venting unit; – at least one hydrogen compression unit; and – a nitrogen cleaning and testing unit. Figure for the abstract: Fig. 1A

The utility model relates to a compressor technical field, concretely is a kind of air quantity stepless regulator applied to new hydrogen compressor.The utility model provides a kind of improved air quantity stepless regulator applied to new hydrogen compressor.It include compressor body, inlet valve, exhaust valve and stepless regulation control mechanism etc., the stepless regulation control mechanism is arranged at the top of compressor body, the adjustable outlet valve is also arranged at the top of compressor body.The moving rate of adjusting block is controlled by hydraulic cylinder, the opening and closing time of inlet valve and delay closing function can be realized accurately, make the excess gas before compression backflow to backflow cavity through exhaust valve, ensure that only the required gas volume is compressed, and then the indicated work consumption can be effectively reduced, and energy efficiency is improved;And when the pressure in compression cavity exceeds the set value, gas can be discharged through the exhaust valve of shaft side and the adjustable outlet valve of cover side double channel respectively, avoid that piston and connecting rod bear excessive one-way force, and then it is favorable to prolong the service life of key components.

The utility model relates to the field of petroleum chemical industry, concretely relates to a kind of aromatic oil hydrogenation device.The aromatic oil hydrogenation device includes: new hydrogen compressor, with opposite new hydrogen import and new hydrogen export;Import pipeline, one end is connected with new hydrogen import, the other end is suitable for being connected with pipe network;Outlet pipeline, one end is connected with new hydrogen export;Check valve is arranged on outlet pipeline, and flow orifice is arranged at check valve;Flow transmitter is also arranged on outlet pipeline, and flow transmitter is arranged behind check valve along the flow direction of hydrogen.The utility model relates to a kind of aromatic oil hydrogenation device, and the pressure and flow of hydrogen can be adjusted by new hydrogen compressor and flow orifice, to adapt to the use requirement of aromatic oil hydrogenation device.

The invention discloses an LNG pre-cooling and multi-stage cryogenic coupling type hydrogen liquefaction system and a working method of the system.The system comprises a pre-cooling unit and a cryogenic unit, and the pre-cooling unit comprises a hydrogen compression module, a pre-cooler, a first expansion machine and a CO / NHcascade refrigeration system; the precooler is combined with a CO2 / NH3 cascade refrigeration system through cold energy released by LNG gasification to efficiently precool raw material hydrogen compressed by the hydrogen compression module, and the deep cooling unit comprises a refrigerant compression module, a refrigerant flow adjusting module and a plurality of heat exchange modules; compressed refrigerants are provided by the refrigerant compression module, the flow of the refrigerants flowing into the heat exchange modules is adjusted by the refrigerant flow adjusting module, raw material hydrogen is subjected to deep cooling through the heat exchanger, the refrigerant expansion machine and the self-exchange heat exchanger in the heat exchange modules, and multi-stage deep cooling is carried out through different heat exchange modules. According to the system and the method, the LNG cold energy and the CO2 / NH3 cascade refrigeration technology are combined for precooling, flow distribution is optimized, multi-stage cryogenic treatment is achieved, and the hydrogen liquefaction efficiency is improved.

The utility model discloses a multi-gas-valve cylinder cover structure of an ionic liquid hydrogen compressor, and belongs to the technical field of hydrogen compression equipment. Comprising an air valve assembly, an exhaust valve support, an air inlet valve support, a four-air-valve cylinder cover, a three-air-valve cylinder cover, a cylinder cover plate, a cylinder cover plate bolt, an air inlet connector and an exhaust connector. The four-air-valve cylinder cover can be provided with four air valve assemblies, and the three-air-valve cylinder cover can be provided with three air valve assemblies. By means of the structure, the intake and exhaust response speed of the ionic liquid hydrogen compressor is effectively increased, system power consumption is reduced, and effective control and rapid conversion of gas are achieved. Meanwhile, the space utilization rate is high, the maintenance cost is low, and wide application of the ionic liquid hydrogen compressor is facilitated.

The invention is suitable for the technical field of organic liquid hydrogen storage and release equipment, and provides organic liquid hydrogen storage and release integrated equipment and a control method. The system further comprises an integrated reactor, a main heat exchanger, a reactor heat exchanger, a high-pressure hot separation tank, a high-pressure cold separation tank, a heat conduction oil circulating pump, a liquid inlet pump, a flow control module, a first cooling device, a second cooling device, a liquid storage tank, a hydrogen buffer tank, a hydrogen-containing organic liquid storage tank, a dehydrogenation organic liquid storage tank and a heat conduction oil heating and control module. A hydrogen compression device; and an organic liquid circulating pump. Through the modes of simplifying design, improving efficiency and stability, optimizing heat management and the like, the problems of pain points and problems of traditional organic liquid hydrogen storage and release equipment are effectively solved, and a more efficient, safer and more economical hydrogen storage and release solution is provided.