17 results about "Hydrogen purifier" patented technology

The utility model relates to the technical field of hydrogen purification, and discloses an ultralow-temperature hydrogen purifier which comprises a tank body with an opening in the top, an inner tank used for being filled with liquid nitrogen is fixedly installed in the tank body, a heat preservation cavity is formed between the tank body and the inner tank, an upper end cover located at the opening is detachably connected to the tank body, and a lower end cover located at the opening is detachably connected to the upper end cover. A lower end cover located in the inner tank is fixedly installed on the surface of one side of the upper end cover, a partition plate is fixedly installed between the upper end cover and the lower end cover, and a heat preservation cavity is formed between the tank body and the inner tank, so that heat transfer is effectively reduced, the utilization efficiency of liquid nitrogen is improved, meanwhile, the upper end cover and the tank body are detachably connected, and the heat preservation effect is improved. The purification device and the gas purification material are easy to replace and maintain, the maintenance cost is reduced, the closing assembly is further arranged, liquid nitrogen can be manually controlled to enter and exit, and therefore the gas purification material is convenient to replace, and the flexibility is higher.

Hydrogen gas purifier electrochemical cells, systems for purifying hydrogen gas, and methods for purifying hydrogen gas are provided. The cells, systems, and methods employ double membrane electrode (DMEA) electrochemical cells that enhance purification while avoiding the complexity and cost of conventional cells. The purity of the hydrogen gas produced by the cells, systems, and methods can be enhanced by removing at least some intermediate gas impurities from the cells. The purity of the hydrogen gas produced by the cells, systems, and methods can also be enhanced be introducing hydrogen gas to the cells to replenish any lost hydrogen. Water electrolyzing electrochemical cells and methods of electrolyzing water to produce hydrogen gas are also disclosed.

This invention discloses an external pressure high-purity hydrogen purifier, comprising an outer cylinder with a membrane tube welded flange inserted at one end and an upper end cap inserted at the other end. The end of the membrane tube welded flange inserted into the outer cylinder is closed and has several uniformly distributed through holes, each through hole having a palladium membrane tube welded into it. The end of the palladium membrane tube away from the membrane tube welded flange is closed. An inner cylinder, sealed to the upper end cap, is also provided within the outer cylinder. A support plate with vent holes is provided within the inner cylinder. An end face flange, with a pure hydrogen interface, is sealed to the end of the membrane tube welded flange away from the outer cylinder. A raw material gas interface is provided on the outer cylinder, and a tail gas emission interface is provided on the upper end cap. The external pressure high-purity hydrogen purifier also includes a temperature measuring sleeve extending into the inner cylinder. The external pressure high-purity hydrogen purifier of this invention has a simple structure, compact layout, small device size, excellent resistance to gas impact and vibration, high hydrogen purification and separation efficiency, and a large gas throughput per unit volume.

A hydrogen generation and carbon capture system includes a fuel reformer, hydrogen purifier, fuel cell, three heat exchangers, two knockout drums, absorber, burner feed pressure regulator, burner, flash tank, solvent trim cooler, and condenser. A process for hydrogen generation and carbon capture includes pumping, heating, and reforming a fuel and water feed. The process includes extracting hydrogen from a raw syngas, directing hydrogen to a fuel cell, separating liquid from a cooled carbon monoxide and carbon dioxide rich syngas mixture and feeding this stream to an absorber. The process includes reducing pressure and burning the syngas mixture, heating the carbon dioxide rich solvent stream, and cooling the cooled regenerated solvent. The process includes heating the heated carbon dioxide rich solvent stream, separating carbon dioxide from the stream, condensing the carbon dioxide stream, and separating liquid from the gas / liquid mixture.

A hydrogen generation and carbon capture system includes a fuel reformer (185), hydrogen purifier (115), fuel cell (105), three heat exchangers (125, 152, 169), two knockout drums (155, 175), absorber (165), burner feed pressure regulator (172), burner, flash tank (167), solvent trim cooler (153), and condenser (177). A process for hydrogen generation and carbon capture includes pumping, heating, and reforming a fuel and water feed (135). The process includes extracting hydrogen from a raw syngas (190), directing hydrogen to a fuel cell (105), separating liquid from a cooled carbon monoxide and carbon dioxide rich syngas mixture (150) and feeding this stream to an absorber (165). The process includes reducing pressure and burning the syngas mixture, heating the carbon dioxide rich solvent stream (162), and cooling the cooled regenerated solvent (151). The process includes heating the heated carbon dioxide rich solvent stream (147), separating carbon dioxide from the stream, condensing the carbon dioxide stream (170), and separating liquid from the gas / liquid mixture (181).

The present invention relates to a high-purity hydrogen purifier and a purification method in the technical field of hydrogen purification, including a deoxidation tank. An inner cylinder is installed at the middle position of the deoxidation tank, and the inner cylinder is integrally composed of a round tube, a connecting tube, and a square tube from top to bottom. A heater is installed at the top of the round tube, and a heating tube inserted into the square tube is arranged at the bottom of the heater. Installation holes are arranged on both sides of the round tube, and an intake pipe is fixed to the inner wall of the installation hole. Air inlet holes are formed on both sides of the intake pipe, and the air inlet holes are designed to be elliptical. A gas blocking assembly for opening and closing the air inlet holes is arranged inside the intake pipe. In the present invention, hydrogen forms a complex turbulent flow path in the square tube, ensuring that the hydrogen can be fully heated, and driving the hydrogen to form a spiral flow path in the deoxidation tank. With the turbulent flow effect of the inner annular seat and the outer annular seat, the flow path of the hydrogen is further changed, enabling the hydrogen to come into more sufficient contact with the deoxidation catalyst and improving the deoxidation efficiency.

The invention discloses an air hydrogen production system and method, and belongs to the field of electrochemistry, and the air hydrogen production system comprises air, a primary water capturing device, a high-humidity environment chamber, gas, a secondary water capturing device, an electrolytic cell, a hydrogen separator, an oxygen separator, a hydrogen purifier and a power supply module. The problem that hydrogen production through water electrolysis in inland areas is limited by water resources is fundamentally solved, meanwhile, hydrogen energy conversion in the future is not limited by time and space, and the cost and technical problems caused by hydrogen energy transportation are thoroughly solved.

The application discloses a kind of organic liquid hydrogen storage hydrogen supply equipment with dehydrogenation function, specifically relates to liquid hydrogen storage field, including liquid hydrogen storage tank and hydrogen supply tank, the output end of the material pump is connected with preheating feed section by pipeline, one end of the preheating feed section is connected with the feed end of dehydrogenation reactor, the upper end of the dehydrogenation reactor is provided with hydrogen outlet, the hydrogen outlet is connected with preheating feed section by pipeline, one end of the preheating feed section is connected with hydrogen purifier by pipeline, and the output end of the hydrogen purifier is connected with hydrogen supply tank.The liquid hydrogen in the inside of the material conveying plate can be preheated, so that the temperature of the liquid hydrogen entering the inside of the dehydrogenation reactor is higher, and the use of the electric heater inside the dehydrogenation reactor is reduced;And preheating plate and material conveying plate are both provided in serpentine structure, which can improve the preheating effect of liquid hydrogen, and separate the hydrogen-poor LOHC liquid in high-temperature gas from hydrogen.

Hydrogen gas purifier electrochemical cells, systems for purifying hydrogen gas, and methods for purifying hydrogen gas are provided. The cells, systems, and methods employ double membrane electrode (DMEA) electrochemical cells that enhance purification while avoiding the complexity and cost of conventional cells. The purity of the hydrogen gas produced by the cells, systems, and methods can be enhanced by removing at least some intermediate gas impurities from the cells. The purity of the hydrogen gas produced by the cells, systems, and methods can also be enhanced be introducing hydrogen gas to the cells to replenish any lost hydrogen. Water electrolyzing electrochemical cells and methods of electrolyzing water to produce hydrogen gas are also disclosed.

This invention discloses a hydrogen purifier capable of adsorbing and removing boron, relating to the technical field of hydrogen purifiers. It includes a base, with an adsorption mechanism, a purification tower, and a dryer fixedly connected to the top of the base. The adsorption mechanism, purification tower, and dryer are connected by a pipeline. One end of the adsorption mechanism is equipped with an axial displacement mechanism. A spherical shell containing adsorbent is disposed within the adsorption mechanism. When boron-containing hydrogen gas flows through the adsorption mechanism, the spherical shells undergo mutual tumbling motion, ensuring full contact between the adsorbent inside the shells and the hydrogen gas, significantly increasing the gas-solid contact area. This overcomes the shortcomings of traditional fixed-bed adsorbents with fixed positions and uneven gas-solid contact. Simultaneously, the dynamic tumbling of the spherical shells allows for a more uniform distribution of hydrogen residence time within the adsorption mechanism, ensuring that the adsorbent at all locations can fully exert its adsorption performance, avoiding premature saturation of local adsorbents, thereby significantly improving the removal efficiency of boron impurities and extending the overall service life of the adsorbent.

The present application relates to hydrogen purification technical field, a kind of high-efficiency stable palladium tube hydrogen purifier, comprising: shell assembly, shell assembly is made of shell, heat preservation layer and inner container, and heat preservation layer is filled in the gap between shell and inner container, the middle of one end of inner container is fixed with the original gas inlet pipe extending out of shell, and the one end of original gas inlet pipe is fixedly installed with inlet valve;Feed pretreatment component, feed pretreatment component is set in the one end of inner container close to original gas inlet pipe, and its top extends to the top side of shell;End cap, end cap is fixedly installed in the one end of shell away from original gas inlet pipe, and the middle of end cap is fixed with hydrogen outlet pipe.The present application realizes the multistage depth purification of hydrogen, greatly improves the recovery rate and purity of hydrogen after purification, simultaneously, high-efficiency breaks the laminar boundary layer formed by raw material gas on the surface of palladium tube body, reduces the resistance of hydrogen molecules from raw material gas main body to spread to the surface of palladium tube, and realizes the double energy saving of tail gas waste heat recovery and tail gas kinetic energy utilization.

The invention provides a pulse ammonia removal method which is suitable for a hydrogen purifier, a membrane electrode is arranged in the hydrogen purifier, the membrane electrode comprises a catalyst layer and a proton exchange membrane and is used for removing ammonia located on the catalyst layer and the proton exchange membrane, and the ammonia removal method comprises the following steps: when the hydrogen purifier is under a set condition, the membrane electrode is used for removing ammonia on the catalyst layer and the proton exchange membrane; introducing mixed gas in a set proportion into the anode of the hydrogen purifier, and introducing hydrogen into the cathode of the hydrogen purifier; pulse voltage is introduced into the hydrogen purifier for multiple times through the pulse power supply, so that the ammonia attached to the catalyst layer and the proton exchange membrane is subjected to oxidation reaction, and the ammonia is separated from the catalyst layer and the proton exchange membrane; wherein the mixed gas comprises hydrogen and ammonia gas, and the set condition is that the hydrogen purifier is at the set temperature, and the value range of the ratio of the hydrogen to the ammonia gas is (99-99.9): (1-0.1); the problems of catalyst poisoning and performance degradation caused by ammonia residues of an electrochemical hydrogen purifier in the prior art are solved.

The invention relates to a hydrogen purifier, and belongs to the technical field of gas purification. The hydrogen purifier comprises a purification cylinder and a plurality of purification sheets; a gas inlet and a gas outlet are respectively formed in two opposite ends of the purification cylinder along the length direction; the plurality of purification sheets are arranged on the inner side of the purification cylinder; the plurality of purification sheets are arranged along the length direction of the purification cylinder; the purification sheet is attached to the inner wall of the purification cylinder; the purification sheet is used for removing impurities in the hydrogen to purify the hydrogen; the purification sheet is made of zirconium ferrovanadium, and the weight ratio of zirconium in the purification sheet is 65%-75%. According to the hydrogen purifier provided by the embodiment of the invention, the purification rate can be ensured while the purification precision is improved.

The invention discloses an organic liquid hydrogen storage and supply device with a dehydrogenation function, and particularly relates to the field of liquid hydrogen storage, the organic liquid hydrogen storage and supply device comprises a liquid hydrogen storage tank and a hydrogen supply tank, the output end of a transfer pump is connected with a preheating feeding section through a pipeline, one end of the preheating feeding section is connected with the feeding end of a dehydrogenation reactor, and the other end of the preheating feeding section is connected with the hydrogen supply tank. A hydrogen outlet is formed in the upper end of the dehydrogenation reactor, the hydrogen outlet is connected with a preheating feeding section through a pipeline, one end of the preheating feeding section is connected with a hydrogen purifier through a pipeline, and the output end of the hydrogen purifier is connected with a hydrogen supply tank. Liquid hydrogen in the material conveying plate can be preheated, so that the temperature of the liquid hydrogen entering the dehydrogenation reactor is higher, and the use of electric quantity of an electric heater in the dehydrogenation reactor is reduced; and the preheating plate and the material conveying plate are both of an S-shaped structure, so that the preheating effect on liquid hydrogen can be improved, and a hydrogen-poor-state LOHC liquid in high-temperature gas can be separated from hydrogen.

The utility model relates to the technical field of gas holder sealing, and discloses a sealing structure of a door body of a hydrogen purifier, which comprises the door body of the hydrogen purifier, a door plate matched with the door body is arranged at an opening of the door body, a bending part is arranged at one end of the door plate close to the surface of the inner wall of the door body, and a cross beam pressing edge is arranged on the surface of the inner wall of the door body. An inner sealing strip is arranged on the surface of the cross beam pressing edge and located between the cross beam pressing edge and the bent portion to form sealing between the door body and the door plate, the cross beam pressing edge is arranged, the inner sealing strip is arranged on the surface of the inner wall of the cross beam pressing edge and forms first sealing with the bent portion of the door plate, and meanwhile a clamping strip type outer sealing strip is arranged on the outer side of the door plate. The door body and the door plate are mutually contacted with the end part of the beam pressing edge to form second sealing, and the double sealing design greatly enhances the sealing effect between the door body and the door plate, effectively prevents gas in the gas holder from leaking, and ensures the safety and the operation efficiency of the hydrogen purifier.

The application discloses a method for directly evaluating catalyst life in a hydrogen release process, and is applied to a continuous dehydrogenation reaction system, which comprises a storage tank, a feed pump, a preheater, a reactor and a hydrogen purifier, and comprises the following steps: 1) preheated hydrogen-rich liquid material enters the reactor to carry out a hydrogen release reaction, when the temperature of the reactor reaches 150 DEG C, timing is started, and data is independently collected in multiple temperature intervals, and the collected data comprises a reaction temperature and a reaction time; 2) the material at the outlet of the reactor is separated into a gas phase and a liquid phase after passing through the hydrogen purifier, real-time detection and recording are carried out on the flow of gaseous hydrogen; 3) the accumulated timing and hydrogen flow data of each temperature interval are simultaneously stored in a data storage; and 4) a hydrogen flow curve graph in different temperature intervals is drawn with time as the horizontal coordinate and hydrogen flow as the vertical coordinate. Through the method, the attenuation of catalyst performance life can be directly and simply reflected by the instantaneous release amount of hydrogen.

The application discloses an inner heat type palladium membrane purifier, which comprises an outer shell and an inner shell, a heat preservation layer is filled between the outer shell and the inner shell, the inner shell comprises a diffusion chamber and a preheating chamber, the palladium membrane purifier further comprises a heating pipe which is inserted into the diffusion chamber, the heating pipe is internally provided with an electric heating element, a palladium alloy pipe is spirally wound outside the heating pipe, one end of the diffusion chamber is provided with an end face flange, the end face flange is provided with a pure hydrogen interface and a tail gas interface, the pure hydrogen interface is communicated with the diffusion chamber and the outside of the outer shell, the tail gas interface is connected with one end of the palladium alloy pipe, the other end of the palladium alloy pipe is connected with a raw material gas preheating coil pipe, the other end of the preheating coil pipe is extended out of the outer shell and is provided with a raw material hydrogen interface, and the palladium membrane purifier further comprises a temperature measuring sleeve pipe. The hydrogen purifier disclosed by the application has the advantages of compact layout, small device volume, few welding points of a palladium membrane assembly, reliable process, long service life, uniform heating temperature of the device, small heat loss, high purification and separation efficiency of hydrogen, and large gas processing capacity per unit volume.