372 results about "Hydrogen compressor" patented technology

The invention relates to the technical field of compressor control, and particularly discloses a method for controlling a green hydrogen compressor, which comprises the steps of data monitoring and acquisition, basic operation state analysis, mechanical characteristic state analysis, equipment electrical state analysis, sealing lossless state analysis and fault early warning and control optimization. Sealing lossless state coefficients are calculated according to parameters such as dynamic pressure difference, hydrogen dynamic leakage rate, part internal defect area, depth and total crack length at a sealing position and are compared with a reasonable range, so that the states of the compressor in the aspects of sealing performance and part integrity can be accurately judged, the problems of sealing failure and part internal defects can be found in time, and the reliability of the compressor is improved. Treatment such as sealing element replacement can be performed in a targeted manner, and stable operation is guaranteed; and finally, aiming at different conditions of overhigh compression thermal state coefficient, abnormal mechanical acoustic state coefficient and the like, measures of adjusting a pre-cooling device, adjusting the rotating speed of a compressor, adjusting a balance block and the like are respectively adopted, so that faults can be effectively handled, and the correlation coefficient is recovered to be normal.

The invention discloses an integrated adjustable ejector for a vehicle-mounted hydrogen supply circulating system, which relates to the technical field of ejectors for vehicle-mounted hydrogen supply circulating systems and comprises a hydrogenation pipeline, a working pipeline and a circulating return pipeline. The circulating return pipeline comprises an integrated adjustable ejector, a hydrogen compressor, a steam-water separator, a circulating return pipeline one-way valve and a pressure reducing valve; the integrated adjustable ejector comprises a shell, a hydrogen inlet and outlet, a storage cavity, a valve, a control device, an execution controller and a monitoring and temperature control module. The integrated adjustable ejector is installed on the circulating backflow pipeline, the monitoring and temperature control module is integrated on the ejector, the hydrogen flow, pressure and temperature are monitored in real time, and the hydrogen temperature is adjusted so that stable operation can be achieved; the fuel cell reactor hydrogen flow sensor converts flow required by a fuel cell reactor into an electric signal, transmits the electric signal to the control device, and controls the execution controller to adjust the valve, so that dynamic optimization is realized, and various working condition requirements of a hydrogen fuel cell automobile are met.

The invention belongs to the field of hydrogen filling, and relates to an automatic hydrogen filling system for a hydrogenation mother station, which comprises a hydrogen purification device, a plurality of hydrogen compressors, a plurality of filling main pipes, a plurality of branch pipelines, a plurality of emptying pipelines, a plurality of filling hoses and a control system, an outlet of each hydrogen compressor is connected with a compressor outlet pressure gauge and a check valve, each branch pipeline is provided with a branch stop valve, and each emptying pipeline is provided with an emptying adjusting valve. And the control system is in signal connection with the compressor outlet pressure gauge, the branch stop valve, the emptying regulating valve and a long pipe vehicle pressure gauge arranged on the long pipe vehicle, and is used for automatically executing the actions of boosting, depressurizing, filling and stopping filling according to the pressure difference. Compressor pressure, filling header pipe pressure and long pipe vehicle pressure cooperate with one another, full automation and full flow of filling boosting and depressurization are achieved, and the working efficiency is improved.

The invention discloses an efficient ammonia decomposition hydrogen production system based on the Joule heating effect and belongs to the technical field of clean energy. The system is composed of an ammonia supply module, a Joule thermally driven ammonia decomposition reaction module and a hydrogenation module. Wherein the ammonia supply module consists of a liquid ammonia storage device, a vaporizing chamber and an ammonia gas storage device; the Joule thermally-driven ammonia decomposition reaction module consists of an ammonia gas flow control valve, a reaction tube gas inlet, a reaction tube gas outlet, a Joule heating electrode tip, a direct-current power supply, a temperature sensor, a thermal insulation layer, a reaction tube, a catalyst and a stainless steel alligator clip; the hydrogenation module is composed of a hydrogen purifying and drying device, a hydrogen compressor, a hydrogen cooling unit, a high-pressure hydrogen storage tank, a hydrogen flow control valve and a hydrogenation machine. The whole process can be started and stably output within one second, the conversion rate and the electrothermal conversion efficiency both exceed 90%, low energy consumption, quick response and safe operation are achieved, the system is particularly suitable for hydrogen refueling station construction in a future hydrogen energy network, and green hydrogen energy economy development is promoted.

The utility model provides a compound device for providing feed gas for preparing green ammonia from new energy and a green ammonia synthesis system. The composite device comprises a deep cooling air separation nitrogen generation subsystem, a hydrogen supply subsystem and a main heat exchanger, and the hydrogen supply subsystem comprises a water electrolysis hydrogen generation unit, a first hydrogen compressor, a second hydrogen compressor, a hydrogen storage tank and a hydrogen conveying pipeline. The hydrogen conveying pipeline comprises a first hydrogen conveying pipeline, a second hydrogen conveying pipeline and a third hydrogen conveying pipeline; the main heat exchanger is a multi-channel heat exchanger and comprises a first flowing channel used for flowing of a first medium and a second flowing channel used for flowing of a second medium, the second hydrogen compressor is connected with the hydrogen storage tank through the first flowing channel, and the hydrogen storage tank is connected with the third hydrogen conveying pipeline through the second flowing channel. The composite device provided by the utility model can ensure the supply stability of the raw material hydrogen of the ammonia production subsystem, and solves the technical problem that the hydrogen supply is unstable in the existing green ammonia synthesis process.

The utility model discloses an oxyhydrogen flame welding and cutting device, which relates to the field of oxyhydrogen flame welding and cutting, and comprises a shell, an oxygen compression bottle and a hydrogen compression bottle are respectively arranged at the lower part in the shell, a partition plate is arranged in the shell, and a conveying pipe is arranged at the bottom of the partition plate. By arranging the dismounting assembly, when the oxygen compression bottle or the hydrogen compression bottle needs to be replaced, the threaded rod can be rotated to move upwards and drive the movable ring to move upwards, the movable ring drives the movable barrel to move upwards, and after the movable barrel is moved out of the air outlet pipe, a worker can take the oxygen compression bottle or the hydrogen compression bottle out of the shell; a new oxygen compression bottle and a new hydrogen compression bottle are placed in the shell, then the threaded rod is rotated in the reverse direction, the movable ring moves downwards, the movable barrel is inserted into the gas outlet pipe, and therefore the oxygen pipe or the hydrogen pipe can be connected with the gas outlet pipe, and the oxygen compression bottle or the hydrogen compression bottle can be rapidly disassembled and assembled in the mode.

The invention discloses a piston type hydrogen compressor cylinder body, a cylinder body assembly and a hydrogen compressor, and relates to the technical field of hydrogen compressors, the cylinder body assembly and the hydrogen compressor both comprise the cylinder body, the cylinder body comprises a cylinder barrel, the cylinder barrel is provided with a cylinder cover and a piston rod seat, and a cylinder sleeve is lined in the cylinder barrel; the inner end of the cylinder cover extends into the cylinder sleeve and provides radial support for the cylinder sleeve, one end of the cylinder sleeve is supported on the piston rod seat, and the other end of the cylinder sleeve is provided with a sealing assembly. The sealing assembly comprises a main sealing ring and a spring which are arranged in a cavity gap between the cylinder barrel and the cylinder cover, the main sealing ring serves as an axial sealing piece in the cavity gap and is attached to the end of the cylinder sleeve, and the spring is arranged on the side, away from the cylinder sleeve, of the main sealing ring and serves as an elastic supporting structure for supporting the main sealing ring. The direction of supporting force of the spring to the main sealing ring is in the axis direction of the cylinder barrel. The structural design adopted by the scheme is beneficial to guaranteeing the reliability of the hydrogen compressor.

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 utility model discloses a cyclohexane dehydrogenation device, which is characterized in that raw materials cyclohexane and hydrogen are jointly sent to a raw material preheater for preheating, then are heated in a raw material heater and then enter a dehydrogenation reactor, a dehydrogenation product is cooled by an outlet cooler, and the cooled product is subjected to gas-liquid separation by a first gas-liquid separation tank; the gas enters the hydrogen compressor to be pressurized, then is cooled and then enters the second gas-liquid separation tank to be separated again, one part of the gas separated by the second gas-liquid separation tank returns to the hydrogen raw material inlet, and the other part of the gas enters the hydrogen impurity removal and purification device to be purified and then is subjected to hydrogen energy recycling; liquid separated by the second gas-liquid separation tank returns to the first gas-liquid separation tank, and a liquid phase outlet is connected with a benzene storage tank through a pump and a pipeline. The by-product cyclohexane in the cyclohexanol production process is completely converted into benzene, the benzene is combined with an existing device and directly enters an existing system, and the advantage that benzene refining separation is not needed is embodied.

The present invention provides a method for generating a flying car energy and thermal management coupling system strategy. The method comprises: S101, modeling the fuel cell subsystem, lithium battery subsystem, fuel cell hydrogen compressor, and cooling subsystem of a hydrogen-fueled hybrid flying car; S102, establishing a hydrogen-fueled flying car energy and thermal management system coupling model based on the models of the fuel cell subsystem, lithium battery subsystem, fuel cell hydrogen compressor, and cooling subsystem; and S103, solving the hydrogen-fueled flying car energy and thermal management system coupling model using a PPO algorithm. By coupling the energy and thermal management systems, the present invention dynamically adjusts the operating parameters of the hydrogen fuel cell to adapt to real-time environmental changes and operational requirements, thereby improving energy utilization efficiency. Furthermore, by optimizing heat dissipation and heat dissipation, the system's service life is extended.

The invention relates to the technical field of hydrogen energy storage and transportation, and discloses a hydrogen storage system convenient for hydrogen charging and discharging regulation, comprising: a gas input module comprising a gas discharging column unit, a buffer tank and a connecting unit, the gas discharging column unit being connected with a tube bundle vehicle by using a ferrule type quick joint, a compression module comprising a first hydrogen compressor unit and a second hydrogen compressor unit, the second hydrogen compressor unit adopts a water-cooling diaphragm structure, the hydrogen storage module comprises a first hydrogen storage bottle group unit and a second hydrogen storage bottle group unit, and the second hydrogen storage bottle group unit is divided into three-stage storage, a gas distribution and control module, a safety guarantee module, a monitoring module and an auxiliary module. Through a gas discharging column double-path parallel interface of the gas input module and the temperature compensation type pressure gauge, and in combination with a check valve and a rupture disk of the buffer tank, the damage of high-pressure impact to equipment is avoided, so that the equipment is prevented from being damaged by the high-pressure impact, and the service life of the equipment is further prolonged.

The invention discloses a hydrogen compressor test device and a test method.The test device comprises a gas storage bottle set, two inlet buffer tanks, two testers, two outlet buffer tanks and a back pressure valve which are sequentially communicated through pipelines, and the inlet buffer tanks and the testers are connected in parallel; outlets of the back pressure valves are communicated to the two groups of inlet buffer tanks, and the two groups of back pressure valves are arranged in parallel; the pipe diameters of the inlet pipelines and the outlet pipelines corresponding to the inlets and the outlets of the two groups of testing machines are different, so that the displacement is controlled according to the pressure. The system has the characteristics of wide working condition, high pressure, large discharge capacity, automatic control and gas recovery, can monitor performance parameters such as temperature, pressure, discharge capacity and the like in a platform operation process in real time, meets the requirements of various hydrogen energy compressor type tests, predelivery tests and scientific research tests, and provides support for design, simulation and performance evaluation of a unit.

The invention discloses a volume type hydrogen compressor cylinder body structure and a hydrogen compressor system, and belongs to the technical field of compressors, the compressor system comprises the cylinder body structure, the cylinder body structure comprises a cylinder body, piston assemblies and a piston rod, and the piston assemblies comprise the first piston assembly and the second piston assembly; each of the first piston assembly and the second piston assembly comprises a piston ring and a guide ring; an air guide hole is formed in the piston rod, an annular groove is formed between the first piston assembly and the second piston assembly, and one end of the air guide hole communicates with the annular groove; the pressure sampling device further comprises a pressure sampling cylinder, a cavity is formed in the pressure sampling cylinder, and when the piston assembly is in the gas compression stroke, the other end of the gas guide hole is communicated with the cavity. And the pressure sensor is used for measuring the pressure in the cavity. According to the structural design provided by the scheme, online monitoring of the sealing condition of the piston assembly and the air cylinder wall can be achieved, and compared with technologies based on vibration monitoring, sound wave monitoring and the like, adverse effects of the data extraction and analysis process on the monitoring result can be avoided.

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 belongs to the technical field of hydrogen compressor monitoring, and particularly relates to a hydrogen compressor state monitoring method based on vibration parameters. The monitoring method comprises the following steps: for any vibration parameter of the hydrogen compressor, acquiring vibration data of a current sliding window according to window parameters of the current sliding window to calculate statistical data and a vibration feature vector of the current sliding window; the window parameters, the vibration data, the statistical data and the vibration feature vectors of the current sliding window jointly form current sliding window information; according to the sliding window information of each vibration parameter between adjacent monitoring moments and the exhaust pressure at the current monitoring moment, each clustering algorithm outputs a cluster result at the current monitoring moment; calculating the weight coefficient of each clustering algorithm at the current monitoring moment; and the clustering algorithm weight coefficients corresponding to the same cluster results are accumulated to serve as scores of the corresponding cluster results, and then the cluster result with the highest score serves as the running state of the hydrogen compressor at the current monitoring moment. According to the invention, the accuracy of monitoring the running state of the hydrogen compressor can be improved based on the vibration parameters.

The invention discloses an electric hydrogen and steam co-production system based on industrial fuel cell-steam heat pump coupling. The hybrid system mainly comprises a wind generating set, an alkaline electrolytic bath, a hydrogen tank, a proton exchange membrane fuel cell, a heat storage tank and a steam heat pump. The power generation output end of the wind driven generator is connected with the factory power grid and then connected with the alkaline electrolytic cell unit, the hydrogen output end of the alkaline electrolytic cell is connected with the hydrogen compressor and compressed into the hydrogen tank, the output end of the hydrogen tank is connected with the hydrogen input end of the fuel cell, and the power generation output end of the fuel cell is connected with the factory power grid. And industrial power energy scheduling is realized. According to the invention, heat control of the proton exchange membrane fuel cell and the alkaline electrolytic cell is realized by heat exchange between the circulating cooling water system and the heat exchanger, waste heat is upgraded by the steam heat pump and heated into saturated steam of more than 130 DEG C, and the saturated steam is connected into a chemical plant to meet steam requirements. According to the invention, unstable wind power is converted into chemical energy of hydrogen for storage.

The invention discloses a BOG recycling system for a liquid hydrogen refueling station, and relates to the technical field of liquid hydrogen refueling. Comprising a liquid hydrogen storage tank, a liquid hydrogen pump, a liquid hydrogen tank car, a liquid nitrogen tank, a gas-liquid separator, a condenser, a metal hydride hydrogen storage tank, a water tank, an inlet buffer tank, a hydrogen compressor, an outlet buffer tank, a hydrogenation machine, a hydrogen storage bottle set, a BOG pressurization pipeline, a liquid hydrogen filling pipeline, a circulation pipeline and a hydrogen recovery pipeline. According to the system, low-temperature hydrogen stored in the liquid hydrogen storage tank is used for liquefying nitrogen generated by pre-cooling to achieve circulation of liquid nitrogen, the metal hydride hydrogen storage tank is used for separating the nitrogen and the hydrogen generated by pre-cooling, meanwhile, the hydrogen releasing cold energy and the hydrogen generated by pre-cooling are conveyed to the hydrogen compressor, the hydrogen compressor is used for pressurizing, and the hydrogen is stored in the liquid hydrogen storage tank. The BOG enters a gas storage cylinder group to be stored or hydrogenated for a hydrogen energy automobile, so that the utilization efficiency of the hydrogen is improved, zero emission of the BOG is realized, and energy is saved.

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 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 quick energy-saving starting device for an electrolytic bath, which comprises a water electrolysis hydrogen production subsystem and a circulating hot water station heat pump subsystem, the hydrogen production subsystem comprises an electrolytic bath, an oxygen gas-liquid separator, a hydrogen gas-liquid separator, an oxygen multi-channel alkali liquor heat exchanger, a hydrogen multi-channel alkali liquor heat exchanger, an oxygen alkali liquor circulating pump and a hydrogen alkali liquor circulating pump, and the heat pump subsystem comprises a circulating hot water station, a hydrogen compressor, an oxygen compressor, a hydrogen cooler and an oxygen cooler. The oxygen multi-channel alkali liquor heat exchanger and the hydrogen multi-channel alkali liquor heat exchanger are provided with circulating water channels, hot water channels and alkali liquor channels, cooling and heating functions are integrated, when the electrolytic bath operates, hot alkali liquor is cooled through circulating water, and when the electrolytic bath is in a standby state, the hot alkali liquor is cooled through hot water. The waste heat of the electrolytic bath system is used for maintaining the temperature of the cold alkali liquor so as to ensure quick start of the electrolytic bath. The power consumption in the starting process of the electrolytic cell is reduced, the operation cost is reduced, and the starting time of the electrolytic cell is shortened.

The invention relates to the field of compressor performance detection, and particularly discloses a hydrogen refueling station hydrogen compressor performance detection method and system, and the method employs an artificial intelligence technology based on deep learning to carry out the continuous monitoring and data analysis of the outlet pressure, inlet pressure and inlet temperature of a hydrogen compressor in a working state. The method comprises the following steps: respectively mining time sequence change modes of various working state parameters, then performing time sequence collaborative analysis on inlet and outlet pressure data to reveal the compression degree of hydrogen, and further combining temperature change characteristics at an inlet of a compressor on the basis to realize intelligent evaluation on an exhaust temperature reference value of the compressor, so as to realize the intelligent evaluation of the exhaust temperature reference value of the compressor. And whether the exhaust temperature performance of the compressor is qualified or not can be judged according to the deviation between the actual exhaust temperature and the reference value. Through the mode, real-time monitoring and accurate evaluation of the performance of the hydrogen compressor can be realized, so that timely maintenance or adjustment is facilitated, and stable operation of the hydrogen compressor and safe supply of hydrogen are ensured.

The invention relates to a hydrogen compressor packing sealing test system which comprises a base and a fixed table fixedly arranged on the base, a pushing assembly is arranged in the middle of the fixed table, a plurality of bearing assemblies are arranged on the fixed table, each bearing assembly comprises a carrier used for bearing a sealing packing piece, and a hydrogen cylinder is arranged on each carrier. A pull rod is slidably arranged in the hydrogen cylinder and the sealing packing piece, a testing assembly is arranged on the carrier, the pushing assembly is used for extruding hydrogen in the hydrogen cylinder in the process of driving the pull rod to slide in a reciprocating mode, the testing assembly tests the sealing performance of the sealing packing piece through hydrogen leakage, and the packing sealing piece can meet the installation requirement before installation. And the leakage condition is prevented.

An offshore hydrogen production platform hydrogen production equipment cooling system comprises a gas-liquid treater, a hydrogen purification device, a chilled water machine, a hydrogen compressor and a hydrogenation machine, an inlet of the gas-liquid treater is connected with an electrolytic bath, and an outlet of the gas-liquid treater is sequentially connected with a hydrogen passivation device, the hydrogen compressor, a buffer gas tank, the hydrogen compressor, a hydrogen storage tank and the hydrogenation machine. The hydrogen adding machine is communicated with the hydrogen-powered ship and provides hydrogen for the hydrogen-powered ship, and the refrigerating unit is connected with the hydrogen passivating device through a pipeline to form a circulating pipeline. Aiming at the characteristics of offshore and shallow sea areas and a fixed hydrogen production platform, when hydrogen production equipment is cooled, required fresh water is provided through cooling of the air cooling radiator arranged on the main deck of the platform, so that the situation that seawater with poor cleanliness in the offshore and shallow sea areas flows through a plate heat exchanger to cool the fresh water to be provided is avoided; the cooling efficiency is improved.

The invention relates to a comprehensive hydrogen supply system based on a 45MPa compressor and a control method.The hydrogen supply system comprises a hydrogen long pipe trailer, the hydrogen compressor, a low-pressure hydrogen storage tank, a medium-pressure hydrogen storage tank, a high-pressure hydrogen storage tank and a hydrogen adding machine, and the hydrogen compressor is connected with the hydrogen long pipe trailer through a hydrogen discharging pipeline; the hydrogen discharging pipeline is provided with a first hydrogen discharging pneumatic valve and a second hydrogen discharging pneumatic valve, the second hydrogen discharging pneumatic valve is connected with a third hydrogen discharging pneumatic valve in parallel, the third hydrogen discharging pneumatic valve is connected with a pressure regulating valve in series, and the hydrogen compressor is correspondingly connected with a low-pressure hydrogen storage tank, a medium-pressure hydrogen storage tank and a high-pressure hydrogen storage tank through a low-pressure hydrogen storage pipeline, a medium-pressure hydrogen storage pipeline and a high-pressure hydrogen storage pipeline. The hydrogenation machine is correspondingly connected with the low-pressure hydrogen storage pipeline, the medium-pressure hydrogen storage pipeline and the high-pressure hydrogen storage pipeline through the low-pressure hydrogenation pipeline, the medium-pressure hydrogenation pipeline and the high-pressure hydrogenation pipeline, the hydrogenation machine is connected with a hydrogenation gun through a hydrogenation hose, and the hydrogen storage system has the advantages of being simple in structure, high in functionality and good in adaptability; the control method has the advantages of being simple in process, stable and reliable.

The invention relates to a hydrogen liquefaction method and system, and the method comprises the steps: enabling a hydrogen raw material to enter a heat exchanger group for cooling after the hydrogen raw material is boosted to a higher pressure; and the obtained cryogenic hydrogen is subjected to two times of expansion refrigeration through a throttling valve and an expansion machine, and then the obtained extremely cold hydrogen is subjected to heat exchange with the pressurized hydrogen through the heat exchanger set and then returns to the hydrogen compressor. By adopting the method disclosed by the invention, on one hand, the yield of circulating hydrogen can be increased under the condition of ensuring that the gas-liquid mixed hydrogen has a relatively high liquefaction component, so that the yield of extremely cold hydrogen serving as a cooling medium can be increased; and on the other hand, the extremely cold hydrogen is adopted for heat exchange, the heat exchange effect of the heat exchanger set can be improved, and then heat balance of the system can be achieved. And on the other hand, the hydrogen raw material is pressurized to a high pressure, then depressurized to a low level and then subjected to secondary expansion refrigeration, the power consumption of the hydrogen compressor and the expansion machine can be reduced, and then the total power consumption and energy consumption of the system can be reduced.

The invention discloses a multi-stage hydrogen doping device and method for a high-pressure and multi-steel-stage natural gas pipeline. The multi-stage hydrogen doping device comprises a hydrogen source system, a natural gas source system, a static mixer and a test pipeline system, the natural gas source system is connected with the hydrogen source system, the hydrogen source system is connected with an inlet of the static mixer, the natural gas source system is connected with the static mixer and the test pipeline system in parallel, the natural gas source system is connected with the inlet of the static mixer, the test pipeline system is connected with an outlet of the static mixer, and the static mixer is connected with the test pipeline system. And a hydrogen compressor is arranged on a hydrogen pipeline between the hydrogen source system and the inlet of the static mixer. The high-pressure, large-flow and multi-hydrogen-doping-ratio in-service natural gas pipeline hydrogen doping test can be achieved, meanwhile, a high-hydrogen-doping-ratio in-station experiment and low-hydrogen-doping-ratio industrial output are conducted, hydrogen is doped into a natural gas pipeline network on a large scale, and various industrial and civil requirements are met.

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 provides an emergency explosion suppression device and method for a pressurization module of a hydrogen refueling station, and the device comprises the pressurization module which is internally provided with a hydrogen compressor; the device is characterized in that the device further comprises a water storage tank, and water is contained in the water storage tank; and the water cooling system forms a loop outside the water tank, the water cooling system exchanges heat with the refrigerant compressor through a heat exchange module, and the water cooling system is further connected with the hydrogen compressor. And the emergency system can provide micro-droplets for the pressurization module when hydrogen leakage occurs in the pressurization module, so that the risk of explosion is reduced.

The invention discloses a method for preparing industrial hexane with ultralow benzene content through pre-hydrogenation. The method comprises the following steps: light naphtha, hydrogen and a hydrogenation catalyst are subjected to a hydrogenation reaction in a hydrogenation reactor for desulfurization and dearomatization, and a first mixture is obtained; feeding the first mixture into a gas-liquid separator to respectively obtain a liquid-phase product and a hydrogen-containing gas-phase product, and separating hydrogen from the gas-phase product through a circulating hydrogen compressor for recycling; and sequentially carrying out second rectification and third rectification on the liquid-phase product to obtain a heavy component substance, and adsorbing the heavy component substance through a molecular sieve. According to the method, by means of front hydrogenation reaction and rear molecular sieve adsorption, on one hand, the reaction load of molecular sieve adsorption is greatly reduced while the reaction activity of the hydrogenation reaction is improved; on the other hand, an extracting agent does not need to be added, other gas-phase and liquid-phase components are not introduced except hydrogen, the preparation process is greatly simplified, and the benzene content in the obtained cyclohexane is smaller than 5 ppm.

The invention relates to the technical field of isopropanol preparation, in particular to a device and a process for preparing isopropanol through reactive distillation. Comprising refining equipment, a preheater, a hydrogen filter, a hydrogen compressor, a buffer tank, a hydrogen heat exchanger, a hydrogenation reactor, a gas-liquid separator and a recovery tower, the hydrogenation reactor comprises a tower body; the tower body comprises an upper tower body and a lower tower body; a gas inlet is formed in the upper end of the upper tower body; by arranging the material changing box, the catalytic plate can be pre-filled in the material changing box, specifically, before the reactor is shut down, an operator pre-loads a new catalytic plate into the material changing box and completes nitrogen replacement so as to thoroughly eliminate oxygen in the material changing box, and therefore during replacement, the replacement efficiency is greatly improved. Compared with the prior art, an operator can directly push the pre-filled catalytic plate into the tower body for replacement without replacing hydrogen in the tower body after shutdown, so that the hydrogen replacement steps are reduced, the shutdown time of equipment is remarkably shortened, and the production efficiency of isopropanol is improved.