1407results about "Hydrogen separation using solid contact" patented technology

A process to purify helium from a feed gas stream containing a mixture of at least nitrogen, methane and helium including introducing the feed gas stream into a first helium membrane separation unit, thereby producing a first helium membrane permeate and a first helium membrane residue; introducing at least part of the first residue into a first nitrogen membrane separation unit thereby producing a first nitrogen membrane permeate stream; introducing a stream derived from the first helium membrane permeate into a hydrogen PSA unit thereby producing a helium rich product stream. Wherein a stream derived from the first nitrogen membrane permeate stream exits the system as a fuel gas product stream. Wherein the feed gas stream has a higher heating value, and wherein the first nitrogen membrane permeate stream has a higher heating value at least 5% higher than the higher heating value of the feed gas.

The invention relates to a method and a system for synthesizing N-methylaniline and co-producing N, N-dimethylaniline by a gas phase method, and belongs to the technical field of chemical engineering. The system comprises a raw material gasification unit, a reaction unit, a separation and rectification unit and a hydrogen recovery unit which are connected through pipelines. The method comprises the following steps of: firstly, mainly synthesizing N-methylaniline from raw materials aniline and part of methanol in a first-methylaniline reactor, then partially or completely feeding first-methylaniline reaction gas into a second-methylaniline reactor, adding methanol steam, and further reacting to generate N, N-dimethylaniline. And after the product gas is subjected to heat exchange energy recovery, a liquid phase and a gas phase respectively enter the separation and rectification unit and the hydrogen recovery unit. The purification of N-methylaniline and N, N-dimethylaniline and the recovery of byproduct hydrogen are realized. The yield of N, N-dimethylaniline (in terms of aniline) can be adjusted in a range of 5-30% by adjusting reaction conditions and a feeding ratio.

The invention discloses a process for preparing ultra-pure hydrogen by recovering and purifying hydrogen. The process comprises the following steps: nitrogen replacement: carrying out three times of pressurization-decompression circulation on an adsorption tower and a pipeline; pretreatment of raw materials: hydrogen-containing tail gas is treated by a buffer tank, a compressor, a desulfurization tower and a horizontal adsorption tower and then enters a PSA (Pressure Swing Adsorption) system; pSA purification: a 6-2-3 / P process is adopted, two towers in six adsorption towers perform adsorption at the same time, and hydrogen larger than or equal to 99.99% is produced; regeneration of the adsorbent is completed through three-stage pressure equalizing and reducing, clockwise / anticlockwise pressure reducing, product hydrogen flushing and three-stage pressure equalizing and boosting; refining by a membrane separation unit: carrying out membrane separation on PSA hydrogen to produce ultrapure hydrogen of which the purity is greater than or equal to 99.999%, and returning trapped gas to a compressor; and condensate water recovery: carrying out steam stripping and deoxygenization on the process condensate liquid, and then taking the process condensate liquid as boiler feed water. The process integrates PSA and membrane separation technologies, realizes efficient and energy-saving ultrapure hydrogen preparation, and is suitable for the fields of green hydrogen energy storage, electronic industry, high-end chemical industry and the like.

The invention relates to the technical field of gas separation and purification, in particular to a method and system for recycling hydrogen in mixed gas through pressure swing adsorption. The method comprises the following steps: performing multi-layer adsorption impurity removal on mixed gas containing 20-25% of silane, 10-15% of disilane and 60-70% of hydrogen, and cooling to 22-28 DEG C; the mixed gas subjected to primary impurity removal enters a pressure swing adsorption device, and an adsorbent in the adsorption device is modified activated carbon. The system comprises a mixed gas cylinder, a pretreatment unit, a pressure swing adsorption unit and a hydrogen collection unit which are connected in sequence. By adopting the pressure swing adsorption method, the hydrogen recovery rate is remarkably increased and can reach 93%, the purity can reach 99.2% or above, and the strict requirement of high-end industrial production for high-purity hydrogen can be met.

The invention relates to the technical field of energy, in particular to a solar coupling hydrocarbon fuel reforming low-carbon oil displacement system which comprises a solar collecting lens, a gasification cavity, a reaction cavity, a solar heat collector, a condensation cavity, a hydrogen separation assembly and a catalyst. The solar collecting lens is arranged on one side of the solar heat collector; the gasification cavity and the reaction cavity are arranged in the solar heat collector; a hydrogen separation assembly and a catalyst are arranged in the reaction cavity, the gasification cavity is used for gasifying input excessive liquid water and hydrocarbon fuel to obtain gaseous hydrocarbon fuel and excessive water vapor, the gaseous hydrocarbon fuel and the excessive water vapor are subjected to a water vapor reforming reaction under the action of the catalyst, and generated hydrogen is discharged through the hydrogen separation assembly; the remaining carbon dioxide and water vapor are conveyed into a gas injection well to conduct oil displacement on an oil field; the condensation cavity is connected with the mining well. The efficient and environment-friendly device based on hydrocarbon fuel wet reforming directly heats and displaces oil by recovering hydrogen and residual reaction products, so that the energy utilization rate is increased, and carbon dioxide is recovered.

The present disclosure provides systems and methods for hydrogen production as well as apparatuses useful in such systems and methods, including steam generation systems and methods. Hydrogen is produced by reforming of a hydrocarbon in a plurality of reformers to achieve improved reforming efficiency. A CO2 convective reformer (CCR) and an oxygen secondary reformer (OSR) are used in series to convert hydrocarbon and steam to synthesis gas with substantially complete carbon capture. Steam generation is provided along separate pathways to provide separate steam streams of different composition.

The invention discloses a pyrolysis device and method with instantaneous high temperature rise and directional regulation and control, and the method comprises the following steps: putting a pyrolysis substance into a pyrolysis reaction vessel, introducing inert gas into a superheated steam inlet, and emptying air in the pyrolysis device; superheated steam is introduced into the superheated steam inlet, and a pressure regulating valve is regulated to enable the pressure in the tubular furnace to reach the required pressure; and collecting and treating the pyrolysis product at the pyrolysis product outlet. According to the method, the boiling point of the added water vapor is regulated and controlled by controlling the pressure of a reaction section according to a Clausius-Claelong equation, sufficient heat is provided for pyrolysis substances at a high-gasification latent heat speed of the water vapor, short-time efficient pyrolysis is realized, and production of by-products in the process is reduced compared with slow heating.

The invention provides a sulfur-tolerant shift pre-transformation protective agent as well as a preparation method and application thereof, and relates to the technical field of sulfur-tolerant shift. The magnesium aluminate spinel, the nickel aluminate spinel and the activated carbon are used as composite carriers, the cobalt is used as a main conversion active component, the detoxification carriers have good adsorption and removal effects on arsenic compounds and small-particle impurities, the arsenic capacity is large and is not influenced by the content of hydrogen sulfide, the conversion activity of the protective agent is moderate, the temperature rise of a bed layer is controllable, and the conditions of large temperature rise and overtemperature are avoided; the influence of a water-carrying working condition on the catalyst is greatly avoided, and the catalyst is suitable for a pre-shift furnace and a detoxification tank in a sulfur-tolerant shift process.

The invention belongs to the technical field of hydrogen production, and particularly relates to a double-tank metal hydride hydrogen purification device which comprises a first tank body, a second tank body, a primary exhaust pipe, a gas communicating pipe, a first liquid passing bathroom, a second liquid passing bathroom, a circulating liquid bath chamber and a liquid communicating pipe. A first perforated pipe and a first metal hydride are arranged in the first tank body; and a second perforated pipe and a second metal hydride are arranged in the second tank body. The primary exhaust pipe is communicated with the first perforated pipe, and the gas communication pipe is communicated with the primary exhaust pipe and the second perforated pipe. And the first tank body and the second tank body are coated with the first liquid passing bathroom and the second liquid passing bathroom respectively. And the first liquid passing bathroom, the circulating liquid bath chamber, the second liquid passing bathroom and the liquid communicating pipe are communicated in sequence to form a liquid pipeline. Through the design of the circulating liquid bath chamber and the liquid communicating pipe, the hydrogen absorption and heat release process and the hydrogen desorption and heat absorption process are mutually compensated, the heat utilization efficiency is improved, the external heating and cooling requirements are reduced, and the energy consumption in the hydrogen purification process is reduced.

The utility model relates to the technical field of hydrogen drying devices, in particular to a low-pressure, low-dew-point and low-pressure-drop hydrogen drying device which comprises an adsorption tower which comprises a tower A and a tower B, after water is cooled and separated through a regeneration cooler and a regeneration gas-water separator, the hydrogen enters an adsorption tower A through V1 to absorb water and dry to meet the requirement, the hydrogen is discharged out of the tower and passes through V7 to reach a gas using point, a small part of about 20% of gas is divided from dry gas at an outlet and is electrically heated to 180 DEG C, and the gas is sent to a tower B through V6 to regenerate and activate an adsorbent; hydrogen absorbing moisture is discharged from the tower and enters a gas inlet cooler and a gas inlet gas-water separator through a V4, the temperature of the cooled and dehydrated hydrogen is greatly increased after the cooled and dehydrated hydrogen is pressurized by a booster pump, the cooled and dehydrated hydrogen is converged with hydrogen at an inlet and then passes through a regeneration cooler and a regeneration gas-water separator, the cooled and dehydrated hydrogen returns to the adsorption tower A to adsorb moisture, and first-step pressurized reflux drying is completed; and similarly, hydrogen is adsorbed from the tower B, is subjected to split-flow heating regeneration, passes through the tower A, is pressurized and then flows back to the tower B again.

The invention belongs to the technical field of hydrogen purification equipment, and discloses pressure swing adsorption hydrogen purification equipment which comprises an adsorption tower, a gas inlet pipe is fixedly connected to one end of the adsorption tower, a first cavity and a second cavity are formed in the adsorption tower, a partition plate is installed between the first cavity and the second cavity, and the partition plate is rotationally connected with the adsorption tower through a rotating assembly. Adsorbent layers are mounted at the top end and the bottom end of the partition plate, and the two adsorbent layers are arranged in the first cavity and the second cavity correspondingly; the rotating assembly comprises first rotating shafts fixedly mounted on the two sides of the partition plate, one end of one first rotating shaft is fixedly connected with a gear, a mounting plate is arranged on one side of the gear, and during work, the partition plate is driven by the driving assembly to turn over by 180 degrees, so that the positions of the two adsorbent layers in the first cavity and the second cavity are exchanged; and not only can the complexity of operation during replacement of the adsorbent layer be reduced, but also shutdown treatment is not needed, so that continuous and stable operation of the device is ensured.

The invention provides a hydrogen water irrigation coupled carbon dioxide gas fertilizer application system and method, in the system and method, formic acid is used as a raw material to decompose and prepare hydrogen and carbon dioxide, and the decomposed hydrogen and irrigation water are mixed through an aeration head to form hydrogen water for farmland irrigation; the decomposed carbon dioxide is compressed into high-pressure carbon dioxide to be stored in a gas steel cylinder, and the high-pressure carbon dioxide is interlocked with a carbon dioxide gas detector in the greenhouse, so that the concentration of the carbon dioxide in the greenhouse can be supplemented and adjusted in real time, the coupling application of hydrogen water irrigation and carbon dioxide gas fertilizer is realized, and the growth of crops is promoted. The system and the method can reduce the use of chemical fertilizers, reduce environmental pollution and improve the soil structure, and conform to the green agriculture development concept.

A hydrogen gas supply apparatus according to one aspect of the present invention includes a compressor configured to compress hydrogen gas and supply the hydrogen gas compressed to a pressure accumulator which accumulates the hydrogen gas, an adsorption column disposed between the discharge port of the compressor and the pressure accumulator, and configured to include an adsorbent for adsorbing impurities in the hydrogen gas discharged from the compressor, and a plurality of valves disposed at the gas inlet / outlet port side of the adsorption column, being at a discharge port side of the compressor, and configured to be able to seal the adsorption column, wherein the space in the adsorption column is sealed using the plurality of valves such that the inside of the adsorption column is maintained to have a high pressure by the hydrogen gas compressed in the case where the compressor is stopped.

The invention relates to the technical field of hydrogen purification, in particular to a high-purity hydrogen purifier and a purification method thereof.The high-purity hydrogen purifier comprises a deoxidation tank, an inner cylinder is mounted in the middle of the deoxidation tank and integrally composed of a round pipe, a connecting pipe and a square pipe from top to bottom, and a heater is mounted at the top of the round pipe; a heating pipe inserted into the square pipe is arranged at the bottom of the heater, mounting holes are formed in the two sides of the round pipe, air inlet pipes are fixed to the inner walls of the mounting holes, air inlet holes are formed in the two sides of each air inlet pipe, the air inlet holes are designed to be oval, and air blocking assemblies used for opening and closing the air inlet holes are arranged in the air inlet pipes. Hydrogen forms a complex turbulent flow path in the square pipe, it is ensured that the hydrogen can be fully heated, the hydrogen is pushed to form a spiral flow path in the deoxidation tank, the flow path of the hydrogen is further changed in cooperation with the turbulent flow effect of the inner annular base and the outer annular base, the hydrogen makes more sufficient contact with a deoxidation catalyst, and the deoxidation efficiency is improved.

A compression unit for ammonia comprising a multi-stage compressor, including a first set of compressor stages adapted to compress a syngas containing hydrogen and nitrogen; and a second set of compressor stages adapted to compress a refrigerant of a refrigerant circuit. Described herein is also an ammonia production system including the ammonia compression unit and a method.

The invention belongs to the technical field of petroleum refining, and relates to a high-purity hydrogen recovery process for improving denitrification efficiency based on a PSA (Pressure Swing Adsorption) device, which comprises the following steps: carrying out primary adsorption impurity removal after pretreatment and pressure regulation on raw material gas, carrying out gas-liquid separation, pretreatment and pressure regulation on the obtained hydrogen-rich gas, and then carrying out membrane separation; the generated hydrogen-rich permeated gas is subjected to pressure regulation and then is sequentially input into a second-stage PSA device and a third-stage PSA device for further adsorption and purification, and finally finished hydrogen with the purity not lower than 99.9% is obtained. The membrane separation technology is adopted for selective separation of hydrogen and nitrogen, the membrane separation unit is arranged at the outlet of the first-stage PSA device, nitrogen is removed from the source, meanwhile, desorbed gas of the third-stage PSA device and retention gas of the membrane separation unit are combined for combustion, nitrogen accumulation in the system is avoided, the nitrogen circulation amount in the system is reduced, and the energy consumption of the system is reduced. The hydrogen recovery rate can be effectively improved while the adsorption efficiency is improved, the process is simple, the investment cost is low, the implementation period is short, and remarkable economic benefits and process advantages are achieved.

The invention discloses a self-cleaning type hydrogen purification adsorption tower, and belongs to the technical field of self-cleaning type hydrogen purification adsorption towers, the self-cleaning type hydrogen purification adsorption tower comprises a vertically arranged tower body, a gas inlet pipe is mounted at the lower part of the tower body, a gas outlet pipe is mounted at the upper part of the tower body, and a fixed seat is fixedly mounted on the inner wall of the upper part of the tower body; a lifting plate is installed on the inner side of the fixing base in a lifting mode, a rotating base is elastically and rotationally installed on the inner wall of the upper portion of the tower body, an elastic rubber part is fixedly connected between the lifting plate and the rotating base, a flushing air pipe is fixedly installed on the upper portion of the tower body, and a motor is fixedly installed on the top of the tower body; and an adjusting assembly for controlling the lifting plate to lift is connected between the motor and the lifting plate. The self-cleaning hydrogen purification adsorption tower can further perform auxiliary pressurization in the adsorption process so as to improve the adsorption effect, and can realize efficient backflushing and cleaning after the adsorption is completed, so that the regeneration adsorption effect of an adsorbent is ensured.

A device (1) for performing electrolysis of water is disclosed. The device comprising: a semiconductor structure (10) comprising a surface (11) and an electron guiding layer (12) below said surface (11), the electron guiding layer (12) of the semiconductor structure (10) being configured to guide electron movement in a plane parallel to the surface (11), the electron guiding layer (12) of the semiconductor structure (10) comprising an InGaN quantum well (14) or a heterojunction (18), the heterojunction (18) being a junction between AlN material and GaN material or between AlGaN material and GaN material; at least one metal cathode (20) arranged on the surface (11) of the semiconductor structure (10); and at least one photoanode (30) arranged on the surface (11) of the semiconductor structure (10), wherein the at least one photoanode (30) comprises a plurality of quantum dots (32) of InxGa(1-x)N material, wherein 0.4≤x≤1. Also a system comprising such device is disclosed.

A method for recovering waste heat and water vapor from a dryer system integrated in a hydrogen plant is described. The method includes receiving regeneration gas from a downstream unit of the hydrogen plant; using heat from the hydrogen plant to heat at least a part of the regeneration gas and form spent regeneration gas through a heating step and a cooling step; recycling spent regeneration gas back to the hydrogen plant that uses heat from the spent regeneration gas; and using desorbed water in the spent regeneration gas as process steam in the hydrogen plant.

The present invention discloses a method for selecting a target palladium membrane, a method for performing a hydrogen-related reaction, and a method and system for determining permeation and diffusion rates. The selection method includes the steps of determining the target lattice parameters and target metal composition and their proportions of the target palladium membrane from the target permeation and diffusion rate of hydrogen gas through the target palladium membrane, the target thickness of the target palladium membrane, and the correspondence between the target permeation and diffusion rate of hydrogen gas through a sample palladium membrane and a specific parameter set of the sample palladium membrane, and selecting a palladium membrane having the target lattice parameters, the target metal composition and its proportions, and the target thickness as the target palladium membrane. The present invention allows for efficient and convenient selection of an appropriate palladium membrane that satisfies the target hydrogen gas permeation and diffusion rate of a hydrogen-related reaction, conveniently measuring the hydrogen gas permeation and diffusion rate of the palladium membrane, and accurately controlling the progress of the hydrogen-related reaction.

The invention provides a garbage pyrolysis gasification multi-stage directional regulation-gas-solid phase reforming synergistic hydrogen production treatment process which comprises the following steps: first-stage regulation: pretreatment and graded feeding: crushing, sorting, drying and catalytic coating treatment are performed on garbage through a physical-chemical directional means; second-stage regulation and control: performing low-temperature pyrolysis directional dechlorination, and performing thermochemical directional conversion on plastic and biomass garbage at 350-450 DEG C; third-stage regulation and control: gasifying and melting are coordinated and oriented, and a gas-solid phase coupling reaction is realized in double fluidized beds at 800-900 DEG C; four-stage regulation and control: multi-stage gas-solid phase reforming is carried out, and the hydrogen yield is increased through catalysis-adsorption synergistic effect in a 700 DEG C moving bed; and five-stage regulation and control: deep purification and hydrogen purification, wherein the synthesis gas is selectively oxidized by utilizing chemical looping combustion to release hydrogen with the purity being greater than or equal to 99.99%. According to the invention, the molten ash is used as a catalytic carrier, and the Fe-Ce active sites of the molten ash are utilized to synchronously realize tar cracking and synthesis gas reforming, so that the conversion rate of tar is effectively improved.

The invention discloses a system for efficiently utilizing biomass to prepare green methanol. The system comprises a biomass pyrolysis unit, a synthesis gas preparation unit, a hydrogen-carbon ratio adjusting unit and a green methanol synthesis unit, the biomass is conveyed to a biomass pyrolysis unit to be subjected to a pyrolysis reaction, then gas-solid separation is conducted, and biochar and biomass pyrolysis gas are obtained; conveying the biochar and fresh water and / or seawater to a synthesis gas preparation unit for water gas reaction to obtain synthesis gas and co-production by-products; the synthesis gas and the biomass pyrolysis gas are fed into a hydrogen-carbon ratio adjusting unit to adjust the ratio of hydrogen-carbon components in the synthesis gas and the biomass pyrolysis gas, so that the ratio meets the stoichiometric hydrogen-carbon molar ratio requirement required by the green methanol synthesis reaction; the synthesis gas and the biomass pyrolysis gas meeting the hydrogen-carbon molar ratio are conveyed to a green methanol synthesis subunit for a methanol synthesis reaction, and green methanol is obtained; in the green methanol, carbon atoms come from biomass, and hydrogen atoms come from biomass, fresh water or seawater.

The invention discloses a process and a device for deep purification and flexible selection of hydrogen in a low-temperature environment, the device comprises a feed gas heat exchanger (1), a liquid nitrogen tank (2), a main path gas pipe (3), a plurality of first branch gas pipes (6), a plurality of second branch gas pipes (7), a hydrogen storage tank (8), a vacuum pump (9) and a plurality of valves (10), and the liquid nitrogen tank comprises a cryogenic buffer tank (4) and a plurality of adsorption towers (5); the two sides of the raw material gas heat exchanger are respectively communicated with the main path gas pipe (3), one end of the raw material gas heat exchanger is respectively communicated with the cryogenic buffer tank (4), the plurality of adsorption towers (5) and the vacuum pump (9), and the other ends of the cryogenic buffer tank (4) and the plurality of adsorption towers (5) are respectively communicated with the main path gas pipe (3) through the first branch gas pipe (6). The preparation and purification efficiency is high.

The invention relates to the technical field of special polymer functional membranes, and discloses a polybenzimidazole gas separation membrane as well as a preparation method and application thereof, the polybenzimidazole gas separation membrane has an interpenetrating network-shaped pore structure, and the polybenzimidazole gas separation membrane has a nanoscale pore structure. The pore size distribution of the nanoscale pore structure is 0.1-30 nm, and the average pore size of the nanoscale pore structure is 1-80 nm. The polybenzimidazole gas separation membrane has an interpenetrating network-shaped pore structure and a nanoscale pore structure, so that the polybenzimidazole gas separation membrane has relatively high gas selectivity and permeability coefficient and also has relatively good mechanical properties.

The invention relates to the technical field of organic solid waste treatment, in particular to a process system for hydrogen production and co-production of biological natural gas from biological crude synthesis gas, which comprises a purification unit, a hydrocarbon regulation unit, an acid removal unit, a methane upgrading unit, a hydrogen recycling and purifying unit and a methane recycling and purifying unit which are connected in sequence. The purification unit is used for removing impurities through pre-impurity removal, compression, dry-process impurity removal and wet-process desulfurization to produce purified synthesis gas and sulfur; the hydrocarbon adjusting unit is pressurized through a centrifugal compressor and adjusts the hydrogen-carbon ratio; the acid removal unit is used for removing acid gas and organic sulfur; the methane upgrading unit is used for converting CO / CO2 into methane through methanation reaction; and the recycling unit purifies hydrogen through pressure swing adsorption and recycles methane by using a membrane separation technology to produce biogas. The problems of low purity and insufficient raw material utilization rate of the traditional process are solved through the circulation process, the co-production of high-purity hydrogen and biogas is realized, and the additional value of resources is improved.

A hydrogen production system for producing a hydrogen gas product includes a geologic hydrogen source configured to provide a feedstock comprising hydrogen, nitrogen, and helium and purification equipment comprising two or more of: a pressure swing adsorption (PSA) device; a guard bed; a separation membrane; a reactive membrane; or a cryogenic separation device. The purification equipment is configured to receive the feedstock from the geologic hydrogen source and produce a hydrogen gas product, and production of the hydrogen gas product exhibits a carbon intensity score less than 3.0 kg CO2 eq / kg H2.

The application discloses a method suitable for hydrogen production in situ in an oil reservoir underground, and belongs to the technical field of oil and gas development. The method comprises the following steps: arranging three horizontal wells, i.e., upper, middle and lower horizontal wells, and a temperature detection well in the same reservoir, the temperature detection well is used for detecting the temperature of the middle horizontal well, and a hydrogen gas filter membrane is arranged at the upper horizontal well; a heating device is arranged at the middle horizontal well, a close cutting volume fracturing is carried out around the well, and a reaction zone is formed by filling a catalyst and a heat-conducting agent; in-situ ignition is carried out at the lower horizontal well, and an oxygen-containing gas is injected, so that the oxygen-containing gas is incompletely combusted to generate CO and CO2 and form a gasification zone; a heating device is used for heating to above 450 DEG C, when the gas in the gasification zone enters the reaction zone, water vapor is injected to carry out high-efficiency hydrogen production; and the upper horizontal well is opened, and the hydrogen gas filter membrane is used for extracting hydrogen gas. The hydrogen production block is separated, the underground hydrogen production efficiency is greatly improved, the energy utilization rate is improved, and therefore the method has good application value.

The invention relates to the technical field of carbon sequestration and hydrogen production, and discloses a carbon sequestration and hydrogen production method and a carbon sequestration and hydrogen production device combined with new energy surplus electric power, and the carbon sequestration and hydrogen production method combined with new energy surplus electric power comprises the following steps: regulating and controlling the temperature and pressure of a geological reaction ore bed; carrying out degassing treatment on the water to obtain degassed water; injecting a mixed solution of carbon dioxide and the degassed water into the geological reaction ore bed; carrying out carbon dioxide mineralization storage and hydrogen production reaction to obtain carbonate minerals and hydrogen; purifying the hydrogen to obtain purified hydrogen; the new energy surplus electric power is used for providing driving force for the carbon sequestration hydrogen production method. The carbon sequestration and hydrogen production method is high in reaction efficiency and reaction rate, not only assists carbon dioxide emission reduction, but also can obtain high-purity hydrogen, can also consume new energy surplus electric power, and has both environmental protection and resource utilization values.

The invention relates to the technical field of gas adsorption materials, in particular to special silica gel for pressure swing adsorption hydrogen extraction and a preparation method thereof. The special silica gel for pressure swing adsorption hydrogen extraction comprises pretreated adsorption silica gel and advanced treatment adsorption silica gel, wherein the pretreated silica gel is specially used for capturing polar molecules; and the silica gel is deeply treated to accurately adsorb small-molecule gas. During preparation, a graded functionalization strategy is adopted, the stability of a silica gel framework is enhanced through acid activation, a multi-stage adsorption interface is constructed through amino / fluorocarbon directional grafting, and active components are fixed through chemical bonding to avoid loss. During application, a double-tower pressure swing adsorption process is adopted, the pretreatment adsorption tower preferentially removes strong adsorbate, the deep treatment adsorption tower improves hydrogen purity through hydrophobic screening, and gradient pressure reduction and pulse nitrogen desorption technologies are matched, so that efficient regeneration of the adsorbent is realized. A single material system breaks through a mass transfer barrier of a traditional multi-adsorbent combination, has the characteristics of high-selectivity adsorption and low-energy-consumption desorption, and is suitable for efficient recovery of hydrogen resources in synthesis ammonia tail gas.

To provide a hydrogen-producing apparatus capable of producing hydrogen with less power.SOLUTION: A hydrogen-producing apparatus 1 comprises: an ammonia tank 2 in which ammonia is stored; a plasma reactor 3 for decomposing the ammonia supplied from the ammonia tank 2 into nitrogen and hydrogen; a first separation film 5 for separating undecomposed ammonia, and nitrogen and oxygen from a mixture of the undecomposed ammonia, the nitrogen and the oxygen, that is supplied from the plasma reactor 3; a second separation film 6 for separating the undecomposed ammonia and the nitrogen from a mixture of the undecomposed ammonia and the nitrogen that are separated by the first separation film 5; and an ammonia return line 14 for supplying the undecomposed ammonia separated by the second separation film 6 to the plasma reactor 3.SELECTED DRAWING: Figure 1