507 results about "Hydrogen treatment" patented technology

The present application relates to hydrogen production technology field, especially to a kind of methanol hydrogen production method, comprising the following steps: S10: methanol water is heated and vaporized to obtain methanol water vapor;S20: methanol reforming reaction obtains hydrogen mixture gas;S30: after cooling treatment to hydrogen mixture gas, through water washing tower absorption unreacted methanol water, then, adjust the relative humidity and temperature of hydrogen mixture gas;S40: hydrogen mixture gas is input into carbon dioxide absorption tower to remove carbon dioxide;S50: after removing carbon dioxide, product hydrogen is obtained and input hydrogen tank storage to supply user end.The above-mentioned methanol hydrogen production method, by methanol water vapor reforming hydrogen treatment, obtains hydrogen mixture gas.Again, hydrogen mixture gas is purified to obtain product hydrogen with very low carbon monoxide content, with raw material easy to transport, the hydrogen purity of output is high, equipment construction cost is low, and energy consumption is low and the like advantages, reach the purpose of expanding hydrogen application range.

The utility model discloses an inerting and discharging combined safety protection device for a solid hydrogen storage tank, and belongs to the technical field of hydrogen storage and supply. The device comprises a solid hydrogen storage tank main body, a pressure and temperature sensing module, an inert gas injection system, a flameless relief device and a hydrogen treatment unit, the pressure and temperature sensing module monitors parameters in the tank in real time, when the parameters exceed a preset threshold value, the inert gas injection system injects inert gas from the lower portion of the tank body at constant pressure, the air pressure is stabilized through flow control, and meanwhile hydrogen is pumped out of an opening in the upper portion of the tank body to the processing unit; and a discharge port is formed in the side surface of the tank body and is linked with the flameless discharge device. According to the device, through the design of inerting inhibition and safe release, the potential safety hazard of overtemperature and overpressure in the solid hydrogen storage process is solved, the stability and safety of a hydrogen storage system are improved, and the device is convenient to operate and adapts to transformation of an existing solid hydrogen storage tank.

An integrated process having an ultra-low GHG footprint for converting Camelina based biomass to liquid fuels and lubricant base stocks in which a Camelina based biomass feed is converted to liquids by a multistep hydroprocessing method and the liquids are upgraded to produce premium hydrocarbon fuels and lubricants.

A PEM (Proton Exchange Membrane) electrolytic bath test system relates to the technical field of proton exchange membrane electrolyzed water and comprises an electrolytic bath, a water replenishing and circulating water module, a produced gas pretreatment and analysis module, a nitrogen purging module, a condensation module, a data acquisition module, a control module and a power supply module. The water replenishing and circulating water module is provided with a water replenishing buffer branch and is used for weakening disturbance of low-temperature water to circulating water temperature during water replenishing; the produced gas pretreatment and analysis module comprises a hydrogen treatment system and an oxygen treatment system which are parallel to each other, and a dew point meter is arranged in the hydrogen treatment system and used for detecting the dew point of produced hydrogen. Through the design of the water replenishing buffer branch, the temperature of water entering the electrolytic bath is effectively stabilized; by integrating the dew-point meter, the capability of detecting the dryness of the gas produced by the electrolytic cell is expanded; the overall framework of the system is optimized, the test precision and the energy efficiency are improved, and the operation cost is reduced.

The invention provides a liquid sulfur removal agent and a preparation method thereof, and belongs to the technical field of natural gas hydrogen sulfide removal treatment.The liquid sulfur removal agent comprises, by weight, 36-66% of s-triazine derivatives, 5-8% of sulfolane, 2-5% of a pH control agent, 10-12% of a stabilizer, 5-8% of a scale inhibitor, 1-2% of a bactericide and the balance deionized water; wherein the s-triazine derivative is selected from a mixture of hexahydro-1, 3, 5-triacetyl-hexahydros-triazine, 1, 3, 5-triacetyl-hexahydros-triazine and 1, 3, 5-triazinane-2, 4-diketone, and the structural formula of the s-triazine derivative is shown in the description. The liquid sulfur removal agent is high in sulfur removal efficiency, good in corrosion inhibition and sterilization performance and not prone to scaling.

The invention relates to a preparation method of quartz glass for photoetching, and belongs to the technical field of quartz glass. The preparation method comprises the following steps: S1, carrying out silicon dioxide loose body deposition by adopting VAD deposition equipment; in the deposition process, the silicon dioxide loose body does autorotation motion and revolution motion; s2, sintering the silicon dioxide loose body by adopting a sintering furnace to obtain a quartz glass ingot; s3, carrying out thermal modification treatment on the quartz glass ingot by adopting a groove sinking furnace; S4, carrying out annealing treatment on the quartz glass ingot subjected to thermal modification by adopting an annealing furnace; and S5, carrying out hydrogen permeation treatment on the annealed quartz glass by adopting a hydrogen permeation furnace to obtain the quartz glass for photoetching. According to the preparation method, the density distribution is improved through a loose body deposition procedure, the problems existing in the aspects of uniformity and defect control in a normal-pressure sintering mode are solved by regulating and controlling the dehydration and impurity removal reaction rate, and uniform distribution of hydrogen molecules is achieved through sectional type hydrogen loading.

Systems and methods for producing olefins and / or aromatics are disclosed. The methods include aquaprocessing of crude and / or heavy oils, at high severity, prior to processing in a steam cracking unit to produce ethylene and propylene at a mass ratio of propylene to ethylene (P / E) of 0.6 or higher. The systems include an aquaprocessing unit capable of being operated at high severity and a steam cracking unit capable of producing ethylene and propylene at a mass ratio of propylene to ethylene (P / E) of 0.6 or higher.

The present invention relates to the technical field of waste catalyst treatment, and discloses a waste hydrogenation catalyst treatment method, a hydrogenation catalyst, and a heavy oil and / or residual oil hydrotreatment method, the method comprises: (1) in an oxygen-containing atmosphere, carrying out carbon burning treatment on the waste hydrogenation catalyst; (2) leaching part of metal in the catalyst obtained in the step (1) by adopting an acid solution to obtain a leaching solution and a leaching residual catalyst; wherein compared with the waste hydrogenation catalyst, the leaching rate of vanadium in the leaching residual catalyst in terms of oxide is 62-94%; (3) carrying out extraction treatment on the leaching solution to obtain an extraction solution containing V < 4 + > and a raffinate; and (4) dipping the leaching residual catalyst obtained in the step (2) by adopting the raffinate, and then carrying out high-temperature activation treatment at 600-800 DEG C. The hydrogenation catalyst obtained by the treatment method is applied to the hydrotreating process of heavy oil and / or residual oil, and has relatively good demetallization performance and relatively high desulfurization activity stability.

The invention provides a repairing method suitable for an engine case connecting bolt. The method comprises the following steps that S1, chemical stripping and fine treatment are conducted on the connecting bolt, an old plating layer on the surface of the connecting bolt is removed, and the surface of the connecting bolt is evenly coarsened; s2, a nitric acid-phosphoric acid binary acid system is adopted to conduct soaking treatment on the connecting bolt treated in the step S1 at the normal temperature, and a passive film on the surface of the connecting bolt is removed; s3, the connecting bolt treated in the step S2 is subjected to chemical nickel plating; and S4, the connecting bolt treated in the step S3 is subjected to hot water stabilization and dehydrogenation treatment, and the repaired connecting bolt is obtained. The invention provides a set of process from old plating layer removal, passive film removal and chemical nickel plating to hydrogen brittleness avoidance, so that the whole repair process is highly controllable, the product quality is stable and repeatable, and the problem of batch scrapping caused by batch difference and process uncontrollability in the prior art is solved.

The invention discloses a method for producing marine fuel oil. The method comprises the following steps: a residual oil raw material and hydrogen sequentially enter a first hydrotreating reactor to an (N-1)-th hydrotreating reactor for reaction, an obtained product, solid-removed oil slurry and optional catalytic diesel oil enter an Nth hydrotreating reactor to be in contact with a hydrogenation catalyst for reaction, and hydrogenated diesel oil and hydrogenated heavy oil are obtained, wherein a portion of the hydrogenated diesel oil is used as a first hydrotreating reactor feed; one part of the hydrogenated heavy oil enters a catalytic cracking unit for reaction to obtain catalytic diesel oil and catalytic slurry oil; and blending the obtained hydrogenated heavy oil with optional solid-removed oil slurry, optional catalytic diesel oil and optional hydrogenated diesel oil to prepare the marine fuel oil. According to the method disclosed by the invention, high-quality ship fuel which is low in cost and can meet indexes can be produced, and the problems that the overall utilization efficiency of a catalyst is low and the operation period of a device is restricted due to the fact that solid-removed oil slurry, catalytic diesel oil and the like are conventionally mixed at the inlet of the first reactor can be solved.

The invention discloses a preparation method of a hydrogen-responsive composite multilayer magnesium-based film surface self-wrinkle pattern. The preparation method comprises the following steps: A, preparing a polymer elastic layer on the surface of a supporting substrate; b, depositing a plurality of layers of metal-based films on the polymer elastic layer by adopting a magnetron sputtering method; and C, exposing the prepared sample in a hydrogen-containing atmosphere, and forming a wrinkle pattern of which the recognizable size is in a range of 10nm-1000mu m on the surface through hydrogenation reaction at normal temperature. According to the method, the surface of the thin film can be deformed by exposing the thin film to the hydrogen-containing atmosphere environment, so that the three-dimensional wrinkle texture can be quickly realized, and the three-dimensional wrinkle morphology can be accurately regulated and controlled by adjusting the element components, sputtering time, sputtering power, working gas flow and hydrogen treatment parameters of the magnesium or magnesium alloy hydrogen-sensitive reaction film layer. The pattern features of the prepared wrinkle pattern can be recognized through characterization means such as an optical microscope, a scanning electron microscope, an atomic force microscope or a diffraction light-variable device.

The application discloses a method and device for producing bright stock, and the obtained bright stock, which comprises the following steps: (1) contacting heavy oil with a hydrogenation catalyst under the presence of hydrogen, and performing hydrogenation reaction under hydrogenation treatment conditions to obtain a hydrogenation product; (2) performing alkylation reaction of aromatics in the hydrogenation product and C10-C20 olefins in olefin oil under the presence of a strong acid catalyst and under alkylation reaction conditions to obtain an alkylation product; and (3) performing distillation separation on the alkylation product to separate and obtain a heavy fraction with a temperature greater than 500 DEG C as the bright stock product. The method provided by the application expands the raw material source of the bright stock, simplifies the process flow, and is convenient for industrial production; and the prepared bright stock product not only has high viscosity and viscosity index, but also has good low-temperature flow performance and high oxidation stability.

Disclosed in the present invention is a method and system for preparing a starting material of a carbon material by means of staged hydrogenation of heavy oil. The method comprises: sequentially performing pretreatment, hydrogenation pretreatment, and vacuum distillation on heavy oil; performing selective hydrogenation treatment on a middle distillate obtained by vacuum distillation; performing hydrogenation ring-opening treatment on a heavy distillate obtained by vacuum distillation; and then performing post-treatment on a product obtained by the selective hydrogenation treatment and a product obtained by the hydrogenation ring-opening treatment, so as to obtain a starting material of a carbon material. The starting material of the carbon material prepared by the present invention has a relatively high content of tricyclic aromatic hydrocarbon and a relatively high content of tetracyclic aromatic hydrocarbon, and a relatively low content of impurities, and can be used for preparing a high-quality carbon material.

The application discloses a preparation method of a lanthanum-cerium-added neodymium-iron-boron magnet, and belongs to the field of magnet preparation. According to a certain element proportion, R1 and R2 alloys are prepared by using a vacuum spinning belt furnace. After the two kinds of alloys are subjected to hydrogen treatment, two kinds of powders with different particle sizes are respectively obtained, the two kinds of powders are mixed according to a certain proportion, and the magnet is obtained through the processes of forming and orientation, cold isostatic pressing, sintering and aging. The magnet prepared by the method has high performance.

Disclosed herein are methods and systems for producing hydrocarbon products through ebullated bed reactor platforms, where the feedstock to the ebullated bed reactor for hydrotreatment may be a renewable feedstock, circular feedstock, and or a blend of renewable and circular feedstocks. The disclosed methods and processes include a recycle pump system within the ebullated bed reactor vessel. This internal recycle dilutes olefins, thereby mitigating explosive olefin hydrogenation without limiting the flow of fresh feedstock to the ebullated bed reactor.

The application discloses a residual oil hydrodemetallization catalyst and a preparation method thereof. The method comprises the following steps: (1) an acid aluminum salt aqueous solution, an alkaline aluminum salt aqueous solution and a kaolin suspension liquid containing a surfactant are subjected to a first reaction to obtain slurry I; (2) an alkaline solution is introduced into the slurry I of step (1) to perform a second reaction to obtain slurry II; (3) the slurry II obtained in step (2) is subjected to hydrothermal treatment with a gallium nitrate solution, and then washed and dried to obtain a gallium-containing macroporous silica-aluminum material; (4) the gallium-containing macroporous silica-aluminum material is mixed with a plasticizing agent and a cementing agent, and then kneaded into a shape, and then dried and calcined to obtain a catalyst carrier; and (5) the catalyst carrier of step (4) is impregnated with an active metal impregnation liquid containing an organic acid and an alcohol compound, and then dried and calcined to obtain the residual oil hydrodemetallization catalyst. The catalyst can improve the demetallization activity and use stability of the catalyst in a residual oil hydroprocessing process.

A process for regeneration of a process enclosure and a catalyst comprising precipitated ammonium salts, and a process and a process plant for continuous hydrotreating a feedstock comprising nitrogen and halides.

The invention relates to a process for rejuvenating an at least partially spent hydrotreating and / or hydrocracking catalyst, said catalyst comprising a group VIII metal, a group VIB metal and an oxide support, said process comprising the following steps:a) the catalyst is regenerated,b) said regenerated catalyst is then brought into contact with an impregnation solution consisting of a mixture of water, at least one precursor of a group VIB metal, at least one precursor of a group VIII metal and at least one organic compound, the amount of organic compound introduced into the regenerated catalyst being optimized with respect to the metals already present in the regenerated catalyst and with respect to the amount of metals introduced via the impregnation solution,c) a drying step is then carried out without subsequently calcining it.

This utility model relates to the field of fuel cell exhaust gas treatment technology, and discloses a fuel cell exhaust gas treatment system, including an ejector, a fuel cell, an open environment treatment loop, a closed environment treatment loop, and a switching valve assembly. The inlet end of the fuel cell is connected to the outlet end of the ejector. The open treatment loop includes a first hydrogen separator, a first hydrogen return branch, and a first emission branch, which are connected to each other. The closed environment treatment loop includes a second hydrogen separator, a hydrogen treatment module, and a second emission branch, which are connected to each other. The switching valve assembly is located at the exhaust end of the fuel cell and is used to control the exhaust end of the fuel cell to be connected to the first hydrogen separator or the second hydrogen separator, so that the exhaust gas treatment system can collect and reuse hydrogen in the exhaust gas when operating in an open environment, thereby solving the problem that the exhaust gas treatment system of the prior art cannot improve the working efficiency of the fuel cell system when operating in an open environment.

The application discloses a hydroprocessing method and a hydroprocessing system. The hydroprocessing method comprises a first-stage hydroprocessing step, a middle-stage separation step and a second-stage hydroprocessing step under the condition of 4-15 MPa. The middle-stage separation step separates the effluent obtained in the first-stage hydroprocessing step into heavy components and light components. The second-stage hydroprocessing step processes the heavy components. The reaction raw material of the hydroprocessing method of the application comprises any one, two, three or four of crude benzene full fraction, heavy benzene, coal-based light hydrocarbon and coal tar. The hydroprocessing system is used for implementing the hydroprocessing method of the application. The application realizes two-stage hydroprocessing through the middle-stage separation processing, and effectively separates the heavy components and the light components, so that each reaction stage processes the corresponding best adaptation effect according to the different properties of the raw materials, and the best selection of each component in the raw material into the target product is ensured.

This application provides a method for improving the performance stability of a metal gate device, comprising: step one, providing a substrate, forming an interlayer dielectric layer on the substrate, and forming trenches in the interlayer dielectric layer; step two, forming a first work function metal layer in the trenches; step three, forming a second work function metal layer in the trenches located in the NMOS region of the substrate; step four, forming a titanium nitride barrier layer covering the second work function metal layer; step five, hydrogen treating the titanium nitride barrier layer to reduce the chlorine content of the titanium nitride barrier layer; and step six, forming a metal gate in the trenches. According to this application, the chlorine content of titanium nitride in the metal gate device can be significantly reduced, thereby significantly improving the performance stability of the metal gate device.

The application relates to a method for producing jet fuel from oil and fat raw materials, wherein the oil and fat raw materials are reacted with a hydrotreating catalyst in a hydrotreating reaction zone, the obtained liquid hydrocarbons are introduced into a first hydroisomerization reaction zone, an optional second hydroisomerization reaction zone is arranged, the obtained diesel oil fraction is recycled into the first hydroisomerization reaction zone or introduced into the second hydroisomerization reaction zone for reaction, and the reaction effluent is separated to obtain jet fuel. The application can produce high-quality biological jet fuel at a high yield.

This invention discloses a method for hydrotreating catalytic cracking slurry. A fixed-bed hydrotreating process is employed, comprising: in the presence of hydrogen, the catalytic cracking slurry sequentially contacts a hydrotreating protectant, a hydrotreating transition catalyst, and a hydrodesulfurization catalyst to undergo a hydrotreating reaction, yielding hydrotreated oil. The hydrotreating protectant comprises an alumina support with a most probable pore size of 40–100 nm, molybdenum oxide, and cobalt oxide. The hydrotreating transition catalyst comprises an alumina support containing additives and MoO3 and CoO. The support has a bimodal pore size distribution, with smaller pores concentrated in the 10–40 nm range and larger pores concentrated in the 150–400 nm range. This method eliminates the diffusion resistance during the adsorption and reaction of large molecules on the catalyst surface during the hydrotreating of catalytic cracking slurry, increases the capacity for more deposits such as coke, extends the operating cycle of the unit, and facilitates hydrodesulfurization and other reactions. It also increases the content of tricyclic and tetracyclic aromatics in the hydrotreated oil, making it a high-quality feedstock for needle coke production.

The application discloses a magnet material, a preparation method thereof and a samarium-cobalt magnet material. The preparation method of the magnet material comprises the following steps: hydrogen absorption, airflow grinding, press forming, hydrogen blowing, dehydrogenation and decarburization reaction and sintering of an alloy sheet; a compact is obtained after the press forming; hydrogen is contained in an atmosphere for the airflow grinding treatment; when the hydrogen blowing treatment is performed, the mass ratio of the compact to hydrogen is 10:(0.5-1), and the hydrogen flow is 0.05-0.2 kg / h; the dehydrogenation and decarburization reaction is performed under the condition that the temperature is continuously raised to T, and T is 580-720 DEG C; the continuous temperature rising comprises a first stage and a second stage; the first stage is that the temperature is raised from T0 to T1, and T1 is 400-500 DEG C; the second stage is that the temperature is raised from T1 to T. The carbon content of the magnet material prepared by the application is 50-300 ppm, and the magnet material can further improve the coercive force while maintaining a high remanence.

The present invention relates to a method for treating a feedstock comprising pyrolysis oil from plastics and / or tires and / or solid recovered fuels containing halogenated compounds, said method comprising: a) a hydrotreating step to obtain a partially hydrotreated effluent having a reduced content of halogenated compounds; b) a separation step in which the hydrotreated effluent from step a) and an aqueous solution are fed to obtain a gaseous effluent, an aqueous effluent and a partially hydrotreated hydrocarbon effluent; and c) a step of fluidized bed catalytic cracking or hydrotreating of a petroleum feedstock and / or a feedstock resulting from biomass conversion, in which the partially hydrotreated hydrocarbon effluent is introduced as a co-feed without a prior separate hydrotreatment step at higher temperature and / or pressure, and the mixture of petroleum and / or biomass feedstock and the partially hydrotreated hydrocarbon effluent has a halogenated compound content of 10 ppm or less by weight.

A process for converting whole crude oil and other heavy hydrocarbon streams to produce ethylene is provided. The process includes feeding a hydrotreated mid-boiling fraction, a hydrotreated resid fraction, or both, and a light boiling fraction to a steam cracker and recovering a light fraction. The light fraction is fed to a first separator and a C1-C3 stream and a mixed C4 and C4 + stream comprising isoolefins, olefins and dienes are recovered, and the mixed C4 and C4 + stream is fed to a second separator and a mixed C4 stream comprising isoolefins, olefins and C4 + streams is recovered. A portion of the mixed C4 stream is dimerized in a dimerization unit to produce a dimerization product stream, hydrogenated in a total hydrogenation system to produce a hydrogenated dimerization product stream, and cracked in a thermal cracking reactor system to produce one or more of hydrogen, methane, ethylene, propylene, n-butene, and isobutene.

The present invention provides a process to prepare kerosene, the process at least comprising the steps of: (a) providing a syngas stream comprising hydrogen (H2) and carbon monoxide (CO); (b) subjecting the syngas stream provided in step (a) to a Fischer-Tropsch reaction thereby obtaining a Fischer-Tropsch product comprising at least 50 wt.% of compounds boiling above 370°C; (c) separating the Fischer-Tropsch product into at least a C1-C4 fraction, H2O and a C5+ fraction; (d) subjecting the C5+ fraction as separated in step (c) to hydroprocessing thereby obtaining a mixture comprising at least a kerosene fraction and a heavier fraction; (e) separating the mixture as obtained in step (d) thereby at least obtaining the kerosene fraction and the heavier fraction, wherein the kerosene fraction has a Final Boiling Point of at most 302°C, preferably at most 300°C as determined by ASTM D86-18 and a flashpoint of at least 38°C as determined by IP170, wherein in the separation of step (e) the effective cut point, as determined by ASTM D2892-15 X2, between the kerosene fraction and the heavier fraction is at least 315°C and at most 330°C, and wherein in step (e) a kerosene yield of above 70 wt.% is obtained, based on the weight of the C5+ fraction subjected to hydroprocessing in step (d); (f) recycling at least a part of the heavier fraction as obtained in step (e) to the hydroprocessing of step (d); wherein step d) is carried out by contacting the C5+ fraction with a first catalyst, wherein the first catalyst comprises a molecular sieve with a pore size between 5 and 7 angstrom and a SiO2 / AlO3 ratio of at least 25 and a group VIII metal.

The utility model relates to the technical field of gas detection, in particular to a hydrogen analyzer. The analyzer comprises an analyzer body, a gas inlet formed in the top of the analyzer body, a hydrogen treatment mechanism, a buffer gas supply mechanism and a rotating shaft I, the hydrogen treatment mechanism is arranged on the outer side of the gas inlet through threads; the buffer gas supply mechanism is arranged at the top of the hydrogen treatment mechanism; the first rotating shaft is rotationally arranged on the hydrogen treatment mechanism. According to the utility model, the hydrogen treatment mechanism is arranged, the filter plate is used for blocking and cleaning particle impurities in to-be-detected gas, and the molecular sieve in the filter box and the activated carbon in the placing box are used for absorbing other gases in the to-be-detected gas, so that the impurities can be effectively removed, and the hydrogen is ensured to smoothly enter the analyzer; therefore, the measurement accuracy is improved, the phenomenon that impurities interfere with a hydrogen detection signal and cause deviation of a measurement result is avoided, the concentration of hydrogen can be improved by absorbing other gases, and the measurement accuracy is improved.

The utility model relates to the field of treatment equipment, in particular to hydrogen sulfide treatment equipment. Comprising an adsorption box, two round pipes and two protection assemblies, the two round pipes fixedly communicate with the two sides of the outer wall of the adsorption box correspondingly, an activated carbon plate is installed in the adsorption box, a plurality of supporting columns are fixedly connected to the lower surface of the adsorption box, the protection assemblies are located on the outer walls of the round pipes, and each protection assembly comprises a fixing base; the fixing base is fixedly connected with the outer wall of the circular pipe, and a rotating shaft is rotationally arranged on the inner wall of the fixing base in a penetrating mode. The hydrogen sulfide treatment equipment provided by the utility model has the advantages that after the hydrogen sulfide treatment equipment stops running, the protective cover can be conveniently driven to seal the gas inlet and outlet round pipe, external pollutants can be prevented from entering the equipment, corrosion or blockage is avoided, the service life of the equipment is prolonged, harmful gases such as hydrogen sulfide can be effectively prevented from escaping, and the service life of the equipment is prolonged. The personnel safety is guaranteed; and the environment is not polluted.