768 results about "Hydrogen pressure" patented technology

The invention belongs to the technical field of unmanned aerial vehicles, and discloses a hydrogen-lithium hybrid power unmanned aerial vehicle and a control system and a control method thereof. The control system of the hydrogen-lithium hybrid power unmanned aerial vehicle comprises a control unit, and a power supply control module, a temperature control module, a gas control module and an exhaust module which are in communication connection with the control unit, wherein the power supply control module collects the power supply quantity of a hydrogen fuel cell and a lithium battery and controls and distributes the power supply quantity to drive the unmanned aerial vehicle to start and fly; the temperature control module is used for radiating and cooling the hydrogen fuel cell; the gas control module is used for detecting hydrogen pressure and controlling hydrogen flow; the exhaust module is used for controlling exhaust of the hydrogen fuel cell. According to the method, the power supply quantity of the hydrogen fuel cell and the lithium battery is optimally controlled and distributed in the flight control process of the unmanned aerial vehicle, so that the problem of different requirements of the unmanned aerial vehicle on energy in the rapid starting and flight processes is solved, the energy utilization efficiency of the hydrogen-lithium hybrid power unmanned aerial vehicle is improved, and the application range of the hydrogen fuel cell on the unmanned aerial vehicle is expanded.

The invention provides a pipeline steel fatigue crack growth rate prediction model construction method and system, and the method comprises the steps: constructing an initial crack growth rate prediction model considering the influence of a hydrogen pressure alternating load according to a Walker formula and a joint factor model; hydrogen pressure change is introduced, and the initial crack propagation rate prediction model is optimized into a hydrogen pressure adaptive crack propagation rate prediction model; hydrogen pressure is given, constant terms in the hydrogen pressure adaptive crack growth rate prediction model are solved, and a final fatigue crack growth rate prediction model is obtained. The cyclic load is designed according to the actual pressure fluctuation of the pipeline, the fatigue crack growth rate model of the pipeline steel under the combined action of the hydrogen pressure and the fatigue load is established, and guiding significance is provided for safe operation and service life prediction of the hydrogen-doped pipeline.

The invention relates to the technical field of hydrogen storage system testing, and discloses a one-way valve combined hydrogen storage system durability test bench and a test method. A main control computer of the rack is used for configuring test task parameters, coordinating operation of subsystems and processing test data; the high-pressure hydrogen supply subsystem comprises a pressure-adjustable hydrogen source and a pressure closed-loop control module, and can apply accurate and controllable hydrogen pressure to the inlet end of the tested system according to test task parameters; the multi-channel valve state acquisition subsystem acquires the inlet and outlet pressure of the valve, the surface temperature of the valve body and vibration spectrum data in real time through pressure, temperature and vibration sensor arrays arranged at the valves, and transmits the data to the main control computer; the valve action driving subsystem comprises a high-speed electromagnetic actuator array and a displacement feedback module and can drive all valves to execute a preset opening degree sequence and opening and closing frequency. And the durability evaluation subsystem is embedded into the main control computer, calculates the accumulated damage degree of the valve and predicts the residual life cycle.

The purpose of the present invention is to provide: a steel material which is suitable as a steel structure used in a hydrogen gas environment, has excellent hydrogen absorption resistance in a hydrogen gas environment, and has excellent hydrogen embrittlement resistance; and a method for producing same.　The steel material has a specific component composition, wherein the amount of saturated hydrogen that has entered in a hydrogen gas environment at a hydrogen gas pressure of 40 MPa is less than a predetermined value. The predetermined value is 0.8 ppm by mass when the tensile strength TS of the steel material is less than 500 MPa, and is a hydrogen amount CH (ppm by mass) calculated from formula (1) when the tensile strength TS of the steel material is 500 MPa or more. (1): CH (ppm by mass) = 5.4637e-0.004 × TS (MPa) In formula (1), TS (MPa) is the tensile strength of the steel material.

The invention discloses a hydrogenation control system, a control method thereof and a hydrogenation machine, and the hydrogenation control system comprises a hydrogenation pipeline, a hydrogen cooling device, a flow velocity detection module, a flow velocity adjusting valve, a temperature detection module, a pressure detection module and a controller. The controller controls the flow rate adjusting valve and the hydrogen cooling device according to the hydrogen temperature detected by the temperature detection module, the hydrogen pressure detected by the pressure detection module and the hydrogen filling flow rate detected by the flow rate detection module so as to dynamically adjust the hydrogen filling flow rate and the refrigeration power of the hydrogen cooling device. While safe hydrogenation is ensured, the temperature of the cooling medium in the hydrogen cooling device is dynamically adjusted according to the hydrogen filling flow rate, so that the effects of energy conservation and emission reduction are achieved.

The invention provides a hydrogen supply control method of a fuel cell system, a controller, a system and a medium, and relates to the technical field of fuel cells. The method comprises the steps that in response to a starting instruction, the opening degree proportion of a first proportional valve is controlled to be adjusted to K11 from K10 through a first PID control parameter, K10 is the opening degree proportion of the first proportional valve which does not allow hydrogen to pass at all, and K11 is the initial opening degree proportion of the first proportional valve at the current environment temperature; obtaining a current actual pile entering pressure value and a hydrogen pile entering pressure set value of the electric pile; the second PID control parameter is used for controlling the opening proportion of the first proportional valve to be adjusted till the deviation between the actual reactor entering pressure value and the hydrogen reactor entering pressure set value is within the allowable error range, and the proportionality coefficient of the first PID control parameter is larger than that of the second PID control parameter. According to the method, the stability of hydrogen pressure is improved, so that the stability and the service life of the fuel cell system are improved.

The invention discloses a method and a device for preparing CLT acid through pipeline type continuous catalytic hydrogenation reduction. According to the method, catalytic hydrogenation reduction reaction is carried out in the device. According to the method, equipment such as a five-stage static tubular mixer, a gas-liquid separation tank and a reduction liquid temporary storage tank is adopted, so that efficient hydrogenation reduction of the CLT acid nitride is realized. In the reaction process, hydrogen is proportionally introduced by stages through a grading mixer, the hydrogen pressure is controlled to be 0.8-1.0 MPa, and the reaction temperature is controlled to be 70-80 DEG C. The used platinum-carbon catalyst is not recycled and recycled after being filtered and recycled, so that the loss of precious metal platinum is effectively reduced. Through the method, the reduction efficiency of CLT acid is remarkably improved, the generation amount of byproducts and dechlorination products is low, and the nitro conversion rate reaches 99.90% or above. The method has the advantages of small equipment volume, short reaction time, high reaction stability and selectivity, and low catalyst cost.

The invention relates to the technical field of catalyst preparation, and provides preparation of a Co-coated NC supported ruthenium metal catalyst and application of the Co-coated NC supported ruthenium metal catalyst in selective hydrogenation reaction of benzoic acid. The method comprises the following steps: adding benzoic acid and a Co-NC supported ruthenium catalyst into a high-pressure reaction kettle, and hydrogenating with benzoic acid in the high-pressure reaction kettle to obtain cyclohexanecarboxylic acid. The mass ratio of benzoic acid to the catalyst is 24: (1-6); hydrogen is used for replacement, and the hydrogen pressure ranges from 0.1 MPa to 2 MPa; the reaction temperature ranges from 333 K to 353 K; and stirring and reacting for 0.5-1 hour to obtain the product cyclohexanecarboxylic acid. Data of the embodiment of the invention show that the conversion rate of benzoic acid hydrogenation provided by the invention is 63.8%-98.6%, and the selectivity of cyclohexanecarboxylic acid is 75.6%-99.7%.

The invention relates to the field of solid hydrogen storage, in particular to a nanocrystalline vanadium-based hydrogen storage material as well as a preparation method and application thereof. The invention provides a method for simply preparing a nanocrystalline vanadium-based hydrogen storage material by a mechanical alloying method, and the preparation method comprises the following steps: 1, crushing vanadium: carrying out vacuum heat treatment on a vanadium block, and adding hydrogen pressure at room temperature to carry out hydrogenation crushing treatment; and 2, in an inert atmosphere, carrying out mixing and ball-milling reaction with an oxide to prepare the nanocrystalline vanadium-based hydrogen storage material. The nanocrystalline vanadium-based material is directly prepared in a ball milling mode, the preparation process and operation are simple, the production period is short, energy consumption is low, and the method is suitable for large-scale production. The nanocrystalline vanadium-based material only contains vanadium and hydrogen, the reversible hydrogen storage capacity is 1.6 wt% at the temperature of 50 DEG C, the hydrogen desorption platform pressure is 6.3 bar, and the capacity retention rate is 96% after 10 times of hydrogen absorption and desorption cycles at the temperature of 30 DEG C.

The invention relates to the technical field of organic synthesis, in particular to a synthesis method and application of functional caprolactam and functional nylon-6. The synthesis method comprises the following steps: in the presence of a catalyst and a solvent, enabling amino caprolactam and / or a derivative thereof to contact and react with benzaldehyde, so as to obtain functional caprolactam which is bis (benzyl) amino caprolactam, wherein the reaction conditions are as follows: the temperature is 150-350 DEG C; the hydrogen pressure is 0.1 to 10 MPa; the time is 5-15 hours. The synthesis method not only has the advantages of high reaction efficiency, high catalytic efficiency, adjustable target product selectivity and the like, but also simplifies process conditions, and realizes green large-scale production.

The invention relates to the technical field of hydrogen energy storage and control, and discloses a hydrogen storage tank pressure and temperature control method and device based on model predictive control, and the method comprises the steps: determining a hydrogen state equation of a hydrogen storage tank, and constructing a hydrogen mass conservation equation and a hydrogen energy conservation equation; based on the hydrogen mass conservation equation and the hydrogen energy conservation equation, a state prediction model of the hydrogen storage tank state related to the net hydrogen flow change is established, and the hydrogen storage tank state comprises hydrogen pressure and hydrogen temperature; a target function is constructed with the hydrogen storage tank state and the net hydrogen flow as control targets, and constraint conditions are configured; on the basis of the input net hydrogen flow sequence of the state prediction model and the predicted hydrogen storage tank state sequence output by prediction, the target function is subjected to minimum solving, and the optimal net hydrogen flow sequence is obtained through iteration; and adjusting an inlet / outlet valve of the hydrogen storage tank based on the optimal net hydrogen flow sequence. The operation efficiency of the hydrogen storage system can be improved.

The utility model discloses a solid state hydrogen storage device, relates to solid state hydrogen storage technical field, the solid state hydrogen storage device includes container, solid state hydrogen storage tank group and connecting structure, the solid state hydrogen storage tank group is installed in the container, the solid state hydrogen storage tank group includes a plurality of hydrogen storage tanks that are evenly distributed, the connecting structure is connected with the solid state hydrogen storage tank group, and the connecting structure is connected with the solid state hydrogen storage tank group. Each hydrogen storage tank comprises a tank body, hydrogen absorption metal particles, a thermal insulation material, an electromagnetic induction heating cable and a shielding layer; the connecting structure is fixedly connected to the end part of each hydrogen storage tank so as to charge or discharge hydrogen into or from the hydrogen storage tanks and detect the pressure and temperature of the hydrogen in real time; and the electromagnetic induction heating cable is electrified to generate an induced magnetic field which interacts with the hydrogen absorption metal particles and reacts with hydrogen to generate solid hydrogen for storage. The device generates an induced magnetic field through the electromagnetic induction heating cable to react with the hydrogen absorption metal particles. Therefore, the hydrogen absorption metal particles are heated, the packaging grids can be kept stable in the heating process, and safety accidents caused by overheating or overpressure are avoided.

The invention relates to the technical field of pressure reducing valves, and discloses a high-pressure hydrogen pressure reducing valve and a using method thereof.The high-pressure hydrogen pressure reducing valve comprises a valve pipe assembly, the valve pipe assembly comprises a hydrogen filtering assembly, the two ends of the hydrogen filtering assembly fixedly communicate with valve shells, and the top of the hydrogen filtering assembly fixedly communicates with a gas valve assembly; one end of the hydrogen filtering assembly is fixedly sleeved with an electric heating ring sleeve, the other end of the hydrogen filtering assembly is rotationally connected with a fan wheel, the side face of the fan wheel is rotationally sleeved with a magnetic cutting element, the bottom of the fan wheel is fixedly connected with a rotating wheel, and one end of the inner side of the bottom of the valve shell fixedly communicates with a magnetic cylinder. The problem that groove-shaped erosion marks appear on the sealing face of the valve seat due to the fact that metal impurity particles in a pipeline of the pressure reducing valve impact the valve element and the valve seat along with high-speed hydrogen flow is solved, the metal impurity particles attached to the magnetic cylinder can be recycled, and the problems that resources are wasted and the surface of an outlet of a valve body is frosted when high-pressure hydrogen expands through throttling are solved.

The invention relates to the technical field of polyolefin degradation, in particular to an EMT / FAU eutectic molecular sieve catalyst and a preparation method and application thereof. The EMT / FAU eutectic molecular sieve catalyst is obtained by physically mixing an acidic molecular sieve and a Pt-loaded TS-1 molecular sieve, and the mass ratio of the acidic molecular sieve to the Pt-loaded TS-1 molecular sieve is 1: 1. The method comprises the following steps: carrying out ammonium ion exchange on an EMT / FAU eutectic molecular sieve to obtain an acidic molecular sieve; pt is packaged by using a TS-1 molecular sieve so as to provide abundant metal hydrogenation sites; an acid site-metal series system is constructed through an acid molecular sieve and a Pt-loaded TS-1 molecular sieve, polyethylene can be converted into short-chain alkane under a mild condition, liquid products are distributed more intensively, and the problems that an existing molecular sieve catalyst is too high in hydrogen pressure in a polyethylene hydrocracking reaction, and the reaction time is shortened are solved. The energy consumption is high; and reaction products are not distributed intensively.

The invention relates to the technical field of fuel nozzles, and discloses a hydrogen fuel nozzle head structure with a hydrogen pressure stabilizing cavity, the center of a head flow guide disc is provided with a cavity structure, the cavity structure can serve as the pressure stabilizing cavity to stabilize the pressure of injected hydrogen, and the pressure of hydrogen entering an air jet hole is stable; hydrogen and air can be mixed more uniformly; a whole circle of air jet holes are distributed in the radial direction, a whole circle of circumferential hydrogen channels are formed in the radial inner side and the radial outer side of each circle of air jet holes, each air jet hole is provided with a radial hydrogen jet hole in the vertical direction, and a multi-point direct injection structure is formed, so that the airflow speed is increased, the combustion flame stopping time is shortened, micro-mixing diffusion combustion is achieved, and the NOx emission amount is reduced. The hydrogen fuel nozzle head structure is based on the characteristic that hydrogen is wide and suitable for combustion, the lean oil flameout boundary of a combustion chamber can be widened, and the wider working range of an engine is achieved.

The invention belongs to the technical field of toluene hydrogenation catalysts, and particularly relates to a magnetically separable carbon-supported ruthenium cluster catalyst as well as a preparation method and application thereof. According to the catalyst, a nickel-coated graphene core-shell structure carbon material is used as a carrier, and ruthenium is loaded on a graphene shell layer in a cluster form through a deposition and precipitation method. The catalyst can efficiently catalyze toluene hydrogenation to generate methylcyclohexane under the mild condition of 80-110 DEG C and the hydrogen pressure of 10-30 bar. Compared with a traditional catalyst, the magnetic separable catalyst not only can work under a relatively mild condition, but also can be separated, recycled and reused by externally applying a magnetic field, so that the targets of environmental protection, energy conservation and emission reduction are further achieved.

The invention provides a hydrogen energy system and power grid collaborative complementary adjustment method and system, and relates to the technical field of energy management, and the method comprises the steps: obtaining a power grid load and renewable energy power generation data, calculating a supply-demand difference curve, switching the hydrogen energy system to a hydrogen production mode in a first target time period, and adjusting the hydrogen energy system to target hydrogen production power, switching to the power generation mode in the second target time period, adjusting the output power according to the supply-demand difference value, the hydrogen pressure and the working state of the battery, and recording the operation parameters to generate a cooperative operation evaluation report, thereby achieving the efficient complementation of the power grid and the hydrogen energy system, improving the energy utilization efficiency, and enhancing the power grid adjustment capability.

The invention discloses a magnetically separable reversed-phase catalyst, a preparation method thereof and application of the magnetically separable reversed-phase catalyst in hydrogenation upgrading recovery of aromatic polyester, and belongs to the technical field of reversed-phase catalysts and plastic recovery. The catalyst is formed by loading a metal oxide (MOx) on a metal carrier nickel, and is applied to hydrogenation recovery of aromatic polyester and conversion of aromatic polyester into high value-added aliphatic polyester. After dispersion, carrying out catalytic hydrogenation reaction on the aromatic polyester at a set temperature, a set rotating speed and a set hydrogen pressure, and completing conversion of the aromatic polyester after the reaction reaches a set time; according to the method, the aromatic polyester is completely converted into the fat polyester with high additional value by using the cheap and easily-separated reverse catalyst, so that the upgraded recycling of the polyester waste plastic is realized.

Provided is a continuous process for producing hydrocarbon products, such as jet fuel, diesel, and naphtha, from lignin-derived materials via hydrodeoxygenation in presence of catalysts under hydrogen pressure. The process comprises introducing a lignin-derived material into a feedstock stream; hydrodeoxygenating said feedstock stream in a first reactor to produce a partially hydrodeoxygenated intermediate; separating gaseous and aqueous by-products from said partially hydrodeoxygenated intermediate to obtain an organic intermediate; hydroprocessing said organic intermediate in a second reactor to produce a hydroprocessed product, said hydroprocessing comprising hydrodeoxygenation and hydrogenation; separating gaseous by-products and aqueous phase by-products from said hydroprocessed product to produce a hydrocarbon product; and fractionating said hydrocarbon product into fuels such as naphtha, jet fuel, or diesel.

The invention discloses a nested high-pressure hydrogen pressure reduction and relief integrated device and a use method, and relates to the technical field of high-pressure gas pressure reduction and relief, the nested high-pressure hydrogen pressure reduction and relief integrated device comprises a valve shell, a gland, a valve body, a porous hedging throttling element and a gas outlet pressure control element, the top of the first hedging channel and the top of the second hedging channel are oppositely arranged, so that hydrogen flowing out of the first hedging channel and hydrogen flowing out of the second hedging channel form gas hedging to depressurize high-pressure hydrogen and reduce the flow rate and kinetic energy of the hydrogen; when the pressure of hydrogen entering the communicating cavity is smaller than the designed pressure, the gas outlet pressure control piece enables the valve body to abut against the top of the valve shell so as to close the pressure relief openings, and when the pressure of hydrogen entering the communicating cavity is larger than the designed pressure, the gas outlet pressure control piece enables the valve body to abut against the top of the valve shell so as to close the pressure relief openings. The valve body slides downwards and slides to the position where the pressure relief opening is opened so that part of hydrogen can flow out of the pressure relief opening to relieve the air pressure of the communicating cavity, the structure is simple, the space utilization rate is effectively increased, and cost is effectively reduced.

The present invention discloses a method for casting pipeline steel and steel billets for hydrogen energy transportation, as well as a method for producing steel plates. Chemical composition: C 0.021-0.076%, Si 0.07-0.21%, Mn 0.66-0.93%, Cr 0.12-0.30%, Ni≤0.24%, Cu≤0.24%, Nb 0.014-0.052%, V 0.014-0.050%, Ti 0.009-0.019%, Al 0.015-0.045%, Mg 0.0005-0.0012%, Ca 0.0012-0.0042%, and the remainder is iron and impurities. The invention modifies inclusions by adding trace amounts of magnesium and calcium, creating a large number of tiny irreversible hydrogen traps in the steel without causing an excessive increase in hydrogen pressure, thereby improving the steel's hydrogen resistance and HIC resistance.

The invention discloses a high-pressure hydrogen pressure reducing valve with a spiral flow channel structure. The high-pressure hydrogen pressure reducing valve comprises a valve body, a sealing end cover, a needle-shaped valve element and an inlet end cover. A through cavity is formed in the center of the valve body in the axial direction. The sealing end cover, the needle-shaped valve element and the inlet end cover are sequentially and coaxially assembled and connected into the cavity of the valve body from top to bottom. A gas outlet channel is arranged on the side wall of the valve body and located between the sealing end cover and the needle-shaped valve element, a gas inlet channel is arranged at the bottom of the inlet end cover, and gas enters from the gas inlet channel and is exhausted through the gas outlet channel. The needle valve has the advantages of being simple in structure and long in service life, and the two spiral flow channel notches are evenly distributed in the outer surface of the needle valve element; due to the design of the spiral flow channel, the hydrodynamic performance is effectively improved, the reliability of the system is enhanced, and meanwhile the energy utilization rate and the impact resistance are improved; in addition, the pressure of hydrogen at the outlet of the valve body can be effectively controlled through the design of the adjusting channel, and the pressure is still kept relatively stable under extreme conditions.

The invention discloses a fuel cell test bench safety monitoring execution method, device, equipment and medium, and relates to the technical field of fuel cell system bench testing.The method comprises the steps that the hydrogen pressure change rate, the hydrogen concentration value and the reference value of the hydrogen concentration change rate are set respectively; collecting a hydrogen pressure signal and a hydrogen concentration signal in the test bench; based on the collected hydrogen pressure signal and hydrogen concentration signal, calculating to obtain a hydrogen pressure change rate, a hydrogen concentration value and a hydrogen concentration change rate in the test bench; and respectively comparing the hydrogen pressure change rate, the hydrogen concentration value and the hydrogen concentration change rate obtained by calculation with set reference values so as to adjust the working state of the test bench. By monitoring and automatically adjusting the hydrogen pressure and concentration, the system can quickly respond to hydrogen leakage and automatically take measures to guarantee the test safety, the safety risk is reduced, and the test efficiency and quality are improved.

The invention provides a water electrolysis hydrogen production device suitable for renewable energy source volatility. The water electrolysis hydrogen production device comprises renewable energy source power supply and distribution equipment, an electrolytic cell, a first gas phase header pipe used for collecting an anode gas phase of the electrolytic cell, a second gas phase header pipe used for collecting a cathode gas phase of the electrolytic cell and a controller. The electrolytic cell and the controller are electrically connected with the renewable energy power supply and distribution equipment, a first regulating valve and a second regulating valve are arranged on the first gas-phase header pipe in parallel, a third regulating valve and a fourth regulating valve are arranged on the second gas-phase header pipe in parallel, and the caliber of the first regulating valve is larger than that of the second regulating valve; the caliber of the third adjusting valve is larger than that of the fourth adjusting valve, and the first adjusting valve, the second adjusting valve, the third adjusting valve and the fourth adjusting valve are all electrically connected with the controller. And a structural basis is provided for adapting to the volatility of renewable energy power generation and adjusting the oxygen pressure, the hydrogen pressure and the pressure difference in the device.

The invention discloses a high-pressure hydrogen pressure reducing valve combined by a multi-layer labyrinth sleeve and an opposite flushing type valve core structure. The high-pressure hydrogen pressure reducing valve comprises a valve body, a valve cover, a valve core rod, a valve seat and the labyrinth sleeve, an air inlet and an air outlet are formed in the surface of the valve body, and an air channel is formed in the valve body and communicates with the air inlet and the air outlet; valve covers are buckled at the two ends of the valve body; the valve core rod comprises a first valve core rod and a second valve core rod; the first valve element rod and the second valve element rod are arranged at the two ends in the valve body respectively. The surface of the second valve core rod is provided with a hedging type runner groove; the valve seat comprises a first valve seat and a second valve seat; the first valve seat and the second valve seat are both arranged in the valve body, the first valve seat is arranged outside the first valve element rod in a sleeving mode, and the second valve seat is arranged outside the second valve element rod in a sleeving mode. A plurality of labyrinth sleeves are arranged and are overlapped and sleeved with one another; a continuous labyrinth channel is formed in the surface of the labyrinth sleeve; the multiple labyrinth sleeves are arranged outside the first valve element rod in a sleeving mode after being stacked. The pressure reducing valve is good in pressure reducing effect, and the outlet pressure can be stabilized.

The invention relates to the technical field of high-pressure hydrogen storage of hydrogen fuel cell automobiles, and provides a high-pressure hydrogen storage bottle opening combination valve with a streamline runner and a control method. The combination valve integrates a high-pressure stop valve, a two-way flow regulating valve, a filter and a pressure / temperature / flow sensor, an air supply channel, an air inflation channel, a discharge channel and a cooling channel are designed, and the air supply channel and the air inflation channel are provided with a common rail type channel. A pilot-operated pressure reducing valve and a main runner bidirectional flow regulating valve are additionally arranged on the gas supply channel to form a two-stage pressure reducing system, so that the pressure and flow of hydrogen at an outlet are effectively limited, and the hydrogen is safely conveyed to a fuel cell; a redundant one-way valve is additionally arranged on an inflation channel to achieve rapid filling. Flow resistance and turbulent flow dissipation are remarkably reduced through a streamline channel, a sealing interface is reduced through modular integration, actuation response and power density are improved, and safety and stability of pressure reduction gas supply and high-pressure filling working conditions, intrinsic safety of the system and reliability of the whole life cycle are ensured.

To provide a method for producing an alkane in which a reaction proceeds at a low reaction temperature and reaction pressure, carbon loss from an alcohol is suppressed, and the conversion rate and selectivity are excellent. Provided is a method for producing an alkane from a C8-24 alcohol, the method comprising a step for reacting a C8-24 alcohol with hydrogen in the presence of a zeolite catalyst and a periodic table group 8-10 noble metal at a reaction temperature of 160°C or higher and a hydrogen pressure of 3 MPa or lower by gauge pressure. The zeolite catalyst is an H-beta type or an H-ZSM -5 type, and the molar ratio (SiO2 / Al2O3) of silica (SiO2) and alumina (Al2O3) is 20-35.

The invention belongs to the technical field of selective catalytic hydrogenation, and provides a method for preparing imine through selective hydrogenation of nitrile compounds. The method for preparing imine through selective hydrogenation of the nitrile compound comprises the following steps: fully dissolving the nitrile compound in a solvent, uniformly mixing, adding a transition metal loaded M / SiC-Bx catalyst, fully mixing to form a suspension, then transferring the suspension into a reaction kettle, sealing, purging with hydrogen, maintaining the hydrogen pressure to be 0.1-5MPa, keeping the pressure of the hydrogen to be 0.1-5MPa, and carrying out vacuum drying to obtain the imine. Under the stirring condition, the temperature of the reaction system is kept at 30-150 DEG C, the reaction is carried out for 0.5-12 hours, the imine compound can be obtained, and x is any numerical value between 0.01 and 2. After the transition metal is loaded on the B-doped SiC, the surface of the SiC becomes rich in electrons, so that the capability of activating reaction substrates (nitrile compounds) and hydrogen overflow is obviously improved, and the activity of the catalyst is further improved.

The invention relates to application of a non-noble metal catalyst Cu-ZnO / TiO2 in catalytic synthesis of N, N '-dicyclohexyl p-phenylenediamine in a heterogeneous system, and belongs to the technical field of catalyst preparation and application. According to the catalyst, zinc nitrate hexahydrate serves as a zinc source, copper nitrate trihydrate serves as a copper source, P25 type titanium dioxide serves as a carrier, metal is loaded on titanium dioxide through a fractional precipitation method, the titanium dioxide is put into a tubular furnace for hydrogen reduction, a catalyst Cu-ZnO / TiO2 is obtained, then the catalyst Cu-ZnO / TiO2 is dispersed in a solvent, and the novel rubber anti-aging agent N, N-dimethylformamide is synthesized by catalyzing a photo-thermal reduction amination reaction of p-phenylenediamine and cyclohexanone. The catalyst is N, N '-dicyclohexyl p-phenylenediamine. Wherein the Cu-ZnO / TiO2 catalyst with the content of copper being 7% and the content of zinc oxide being 4% has excellent catalytic performance, the conversion rate of p-phenylenediamine reaches 100% and the selectivity of N, N '-dicyclohexyl p-phenylenediamine reaches 99.9% when the hydrogen pressure is 6 MPa, the temperature is 200 DEG C and the reaction is performed for 10 h. The preparation method is simple, low in cost and high in catalytic selectivity, and has a wide industrialization prospect.

The invention relates to a rare earth modified AB2 type solid hydrogen storage alloy and a batch preparation method thereof, belongs to the technical field of hydrogen storage alloy materials, and solves the problems of high activation condition, long activation period, overhigh hydrogen absorption platform pressure, high batch preparation smelting difficulty, low yield, unstable product quality and the like of the traditional Ti-Mn series hydrogen storage alloy in the prior art. The specific composition of the hydrogen storage alloy is Ti < 1.1-x-y > Y < x > Zr < y > Mn < 2.0-y-z-m > Cr < z > Ni < m > Co < n >, x, y, z, m and n in the formula are atomic ratios, x is larger than or equal to 0.01 and smaller than or equal to 0.04, y is larger than or equal to 0.10 and smaller than or equal to 0.35, z is larger than or equal to 0.45 and smaller than or equal to 0.70, m is larger than or equal to 0.1 and smaller than or equal to 0.2, and n is larger than or equal to 0.05 and smaller than or equal to 0.15. The hydrogen storage alloy has good activation performance and hydrogen absorption and desorption performance, the hydrogen storage capacity is larger than or equal to 1.86 wt.%, and the hydrogen absorption and desorption platform pressure can be adjusted according to application requirements; under the conditions that the temperature is 20 DEG C and the initial hydrogen pressure is 3 MPa, activation can be completed through one-time hydrogen absorption and desorption circulation; after 200 times of hydrogen absorption and desorption cycles, the capacity retention ratio of the alloy is gt; and 98%. The invention further provides a preparation method of the hydrogen storage alloy, the method has the advantages of being simple and easy to operate, high in yield, stable in product quality and the like, and the problem of component segregation of a casting process is fundamentally solved.