221results about "Noble gas compounds" patented technology

The invention provides an inert gas generation system, and relates to the technical field of industrial gas production. The inert gas generation system comprises the following modules: a gas pretreatment module, an intelligent separation module, a dynamic purification module, a pressure regulation and control module, a quality analysis module, a safety control module and an energy efficiency optimization module, and the gas pretreatment module is used for removing particulate matters through an electrostatic dust collection device by adopting a multi-stage gradient filtering algorithm based on ambient air input, adjusting humidity by combining a dew point control technology, forming a standardized gas source and generating a standard gas source. Through combination of a multi-stage gradient filtering algorithm and a dew point control technology, collaborative treatment of particulate matters and humidity is realized, stable gas source input is formed, the reliability of a subsequent processing link is improved, membrane separation parameters are dynamically predicted by applying a convolutional neural network model, and the permeation efficiency of a hollow fiber membrane stack is optimized.

The invention relates to a Kr separation method and system based on selective desorption, a terminal and a storage medium, and relates to the technical field of rare gas purification. Calculating the difference between the quotient of the historical krypton loss amount and the adsorption column mass and the initial unit krypton adsorption amount to generate the actual unit krypton adsorption amount; calculating the quotient between the product of the actual unit krypton adsorption quantity and the mass of the adsorption column and the flow velocity of the single to-be-adsorbed air so as to generate actual adsorption time; controlling the first-stage adsorption column to adsorb the to-be-adsorbed air according to the actual adsorption time so as to generate a to-be-separated adsorption column; controlling the adsorption column cleaning device to clean the adsorption column to be separated according to the actual unit krypton adsorption quantity, and collecting desorbed gas after cleaning to the waste gas storage device; and performing desorption operation on the cleaned adsorption column, controlling a gas collection device to collect desorbed gas, and heating and activating the first-stage adsorption column to recover the adsorption capacity. The application has the effect of reducing krypton loss.

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 discloses a porous carbon particle adsorption material capable of preparing ultra-pure helium through one-step purification as well as a preparation method and application of the porous carbon particle adsorption material. The method comprises the following steps: (1) carbonizing biomass particles; (2) dipping the carbonized biomass particles in a nitrogen source-containing aqueous solution; (3) carrying out CO2 activation pore-forming and nitrogen functional group doping on the nitrogen source impregnated carbonized biomass particles obtained in the step (2) at high temperature; and (4) fully activating the nitrogen source impregnated carbonized biomass particles, performing programmed cooling, and introducing water vapor to perform secondary pore forming and oxygen functional group doping to obtain the porous carbon material. According to the method, the porous carbon particle adsorbent is prepared from natural biomass, the pore size distribution is concentrated, nitrogen and oxygen containing functional groups are rich, the adsorbent has ultrahigh adsorption and capture capacity on various impurities in the crude helium under the low-temperature condition, the impurities in the crude helium can be removed in one step, the helium is purified to reach the 6N standard, and the method is suitable for industrial production. And the application requirement of high-efficiency removal of impurities in the production process of ultra-pure helium is met.

The invention provides application of a silver modified AFX molecular sieve in xenon and krypton gas separation, and belongs to the technical field of gas separation. According to the invention, silver ions with electronegativity are introduced into AFX molecular sieve pores through ion exchange, selective adsorption of xenon is realized through the AFX topological molecular sieve subjected to Ag exchange so as to enrich xenon, and excellent separation of xenon and krypton is finally realized. The xenon and krypton adsorption isotherm of the silver modified AFX molecular sieve under the condition of 25 DEG C is tested, and the IAST (ideal adsorption solution theoretical value) of the molecular sieve is analyzed to be 36.5 through a static adsorption curve; according to the method disclosed by the invention, a dynamic penetration test is carried out under trace Xe and Kr concentrations by simulating the waste gas subjected to UNF post-treatment, and the dynamic capacity of Xe is calculated to be 104 mmol kg <-1 >, which is superior to that of other reported materials.

The invention discloses an argon recovery system for EIGA powder preparation, belongs to the technical field of gas recovery, and solves the problems that the step is added for further purification after argon recovery every time, so that excessive energy is consumed, the cost of recovered argon is forcibly increased, and the production cost is reduced. Therefore, whether low-concentration impurities such as CO and H2 are mixed in argon or not needs to be detected in the argon recovery process. Comprising a pretreatment module, a filtration and purification module, a deep purification module, a pressurized gas storage module and a low-concentration impurity detection module. According to the device, argon is sampled in a split-flow mode, impurity gathering is enhanced through a sound field, detection, signal processing and the like are carried out, errors are corrected through temperature and pressure compensation, alarm is triggered, emergency purification is controlled, real-time detection and closed-loop control of the CO / H2 in the argon as low as 0.5 ppm / 0.3 ppm are achieved, routes can be switched through an execution module, the argon is treated through a chemical looping combustion reactor, impurities are removed, and the device is suitable for industrial production. And purity of argon is ensured.

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 utility model discloses a helium dehydrogenation and purification device taking air as regenerated gas. The helium dehydrogenation and purification device comprises a catalytic dehydrogenation reactor, a first adsorption reactor and a second adsorption reactor, a refrigerant of the heat exchanger is connected with a feed gas source and a compressed air source, a refrigerant outlet of the heat exchanger is connected with an inlet of the catalytic dehydrogenation reactor, an outlet of the catalytic dehydrogenation reactor is connected with a heating medium inlet of the heat exchanger, and a heating medium outlet of the heat exchanger is connected with an inlet of the steam-water separator; inlets of the first adsorption reactor and the second adsorption reactor are connected with an outlet of the steam-water separator and a regenerated waste gas outlet; outlets of the first adsorption reactor and the second adsorption reactor are connected with a product gas outlet and a compressed air source; a hydrogen analyzer and a flow meter are arranged on a pipeline for connecting a refrigerant inlet of the heat exchanger with the feed gas source, and a flow controller and a flow control valve are arranged on a pipeline for connecting the refrigerant inlet of the heat exchanger with the compressed air source; the flow controller is electrically connected with the hydrogen analyzer and the flow meter and can control the opening degree of the flow control valve. The problem that hydrogen-containing gas cannot be provided as regeneration gas in most helium catalytic dehydrogenation purification scenes is solved.

An apparatus for extracting and utilizing noble gases from carbonate rock includes a container body. A gas-solid separation assembly defines filter pores, and a diameter of each filter pore is micrometer-scale. A mechanical crushing assembly is disposed at a bottom of the gas-solid separation assembly, and is configured to crush a carbonate-rock sample until particles each have a size on the order of micrometers or larger. The gas-solid separation assembly is elastic. The particle deposition device is disposed inside a crushing chamber. The particle deposition device includes connecting ropes and spheres. The connecting ropes are fixed to an inner wall of the crushing chamber, and the spheres are fixed to the connecting ropes. This apparatus not only avoids the generation of large quantities of impurity components, but also separates solid carbonate-rock sample particles from the noble gases, enabling effective extraction of the noble gases from the carbonate-rock sample for utilization.

This paper discloses a rapid cyclic pressure swing adsorption (PSA) method for separating O2 from N2 and / or Ar. The method uses a carbon molecular sieve (CMS) adsorbent with a driving force of 1 atma and 86 atma, as indicated by a linear driving force model. o F measures at least 5% O2 / N2 and / or O2 / Ar kinetic selectivity and at least 0.2000% O2 adsorption rate (1 / s).

The application discloses a helium low-temperature purification pressure building device and a pressure building method, which comprise a flash evaporation unit, a purification unit and a heat recovery unit connected in sequence. In the application, the product gas of the liquid air separator is used to build pressure for the adsorber under the regeneration pressure building in the high-pressure working state, so that the adsorber under the working state is prevented from charging pressure for the adsorber under the regeneration pressure building and the pressure of the adsorber under the working state is prevented from being lost. Since the pressure difference between the liquid air separator and the adsorber under the regeneration pressure building is large, the high-pressure impact is easy to cause the damage of the equipment, the pressure building process is arranged in the purification process, the time required for the pressure building is reduced, the adsorber under the working state is saturated, the adsorber under the regeneration state is built in pressure, automatic switching can be realized, the continuous production of the product high-purity helium gas is realized, and the use demand of the high-purity gas is met.

The utility model relates to a molecular sieve device for krypton and xenon production, which comprises a pipeline with a rectangular section, a plurality of screening mechanisms are arranged on the pipeline along the length direction, a plurality of strip-shaped insertion holes which vertically extend are arranged on the right side wall of the pipeline and are in one-to-one correspondence with the screening mechanisms, and the screening mechanisms can be inserted into the strip-shaped insertion holes; the screening mechanism comprises a rectangular frame body, the two faces of the frame body are both covered with net faces, and the frame body is filled with molecular sieve filler. A vertically-through upper opening is formed in the top edge of the frame body, and a vertically-through lower opening is formed in the bottom edge of the frame body. The right side edge of the frame body is provided with a horizontally-through plugboard hole, and the plugboard hole corresponds to the position of the lower opening; and the plug board penetrates through the plug board hole and extends into the lower opening. The multi-stage screening mechanism is adopted, compared with the prior art, a better impurity gas removing effect is achieved, the molecular sieve filler of a certain screening mechanism can be replaced according to needs, and the replacement process is simpler.

The utility model relates to the technical field of gas production equipment, in particular to full-automatic ultra-pure helium and xenon gas purification equipment, when the full-automatic ultra-pure helium and xenon gas purification equipment is used, a catalyst is respectively arranged in each group of lower tank bodies, and a worker operates gas to enter the first group of lower tank bodies to carry out purification operation through the catalyst; when the catalyst in the first group of lower tank body needs to be replaced, the gas can be continuously purified while the catalyst is replaced, so that the processing efficiency is improved; comprising a supporting seat, lower tank bodies, upper tank bodies and supporting legs, the supporting legs are arranged at the bottom end of the supporting seat, two groups of lower tank bodies are fixedly mounted on the supporting seat, one group of upper tank bodies is detachably arranged at the top end of each group of lower tank bodies, the device further comprises locking assemblies, an air inlet assembly and an air exhaust assembly, and the lower tank bodies and the upper tank bodies are connected through a plurality of groups of locking assemblies. The output ends of the two groups of lower tank bodies are respectively communicated with the exhaust assembly, and the input ends of the two groups of upper tank bodies are respectively communicated with the output end of the air inlet assembly.

The invention provides an inorganic membrane for extracting helium as well as a preparation method and application of the inorganic membrane. The inorganic membrane comprises a molecular sieve membrane and a protective coating, the molecular sieve membrane comprises a carrier and a molecular sieve layer, the protective coating is located on the surface of the side, away from the carrier, of the molecular sieve layer, and the protective coating comprises beta-cyclodextrin and / or polydimethylsiloxane. The inorganic membrane for helium extraction comprises the molecular sieve membrane and the protective coating, the protective coating comprises beta-cyclodextrin and / or polydimethylsiloxane, and due to the existence of the protective coating, the separation selectivity of the inorganic membrane on helium in mixed gas containing helium and methane can be high.

The application discloses a helium collection system and seawater helium collection equipment, which comprises a separation tank body, a gas separation net arranged in the separation tank body, a conveying pipeline penetrating through the separation tank body, a separation assembly arranged in a first chamber of the separation tank body, and a collection assembly communicated with the first chamber through a gas outlet arranged at the top of the separation tank body. The gas separation net divides the inner cavity of the separation tank body into the first chamber and a second chamber arranged in a vertical mode. The conveying pipeline extends along the arrangement direction of the first chamber and the second chamber, and the outlet end of the conveying pipeline is arranged in the first chamber, the inlet end of the conveying pipeline penetrates through the bottom of the separation tank body, and a gas-water inlet is connected to the conveying pipeline. The conveying pipeline is configured to convey a gas-water mixture into the second chamber, and the separation assembly is configured to separate helium from liquid. The helium enters the collection assembly through the gas outlet, and the liquid enters the second chamber and is discharged. The application solves the problem of insufficient helium resources in China.

A method of separating hydrogen from a gas comprising helium includes receiving an input gas stream comprising hydrogen and helium and forwarding the input gas stream to at least one first membrane module comprising at least one first hydrogen-selective membrane for performing a first separation process for separating hydrogen, forwarding a first retentate from the at least one first membrane module to at least one second membrane module comprising at least one second hydrogen-selective membrane for performing a second separation process for separating hydrogen in the first retentate, providing a hydrogen stream comprising the first permeate and the second permeate from the at least one second membrane module and providing a helium stream comprising the second retentate from the at least one second membrane module. The disclosure includes a related method of extracting hydrogen and helium from a gas source and a related membrane module system.

Embodiments of the invention relate to methods, systems, and software for identifying and quantifying subsurface hydrogen, helium, carbon dioxide, or other fluids using multiple indicia from geophysical well logs, other wireline logging tools, or mudlogging tools.

A gas separation device for separating and containing various types of gases from a collection chamber based on different atomic masses is disclosed. The chamber is connected to an ion diverter by a valve that, when opened, allows various types of gases to migrate from the collection chamber to an ionizer in which the gases are ionized. The ionized gas is accelerated by the ion accelerator and distributed into the ion deflector. The ion deflector includes a magnetic field within a channel defined by a pair of split-pole magnets. The trajectory of the ions is based on the ion mass of the separated ions. A plurality of collectors are located at different locations on the exit side of the ion deflector for receiving different ions moving along respective trajectories.

The invention provides an electromagnetic induction heating type molecular sieve air separation device which comprises a box body, a rotating pipe, a driving mechanism and a control unit, an air compressor is arranged on the top face of a rack and connected with an air inlet pipe and a connecting pipe, the connecting pipe extends downwards, the end of the connecting pipe is connected with a rotating connector, and a permanent magnet is arranged in the box body to form a magnetic field; the driving mechanism is in driving connection with the rotating pipe, the rotating pipe is sleeved with a rotating cylinder, the rotating cylinder is internally provided with a molecular sieve, the molecular sieve is sleeved with the rotating pipe, the side face of the molecular sieve is sleeved with a conductor winding, the bottom of the rotating cylinder is rotationally connected with a circular ring, and the circular ring is connected to the pressure sensor through a first spiral spring. The pressure sensor is arranged to monitor the increased weight of the molecular sieve in real time, when a weight threshold value is reached, the driving mechanism is triggered, the rotating pipe is driven to rotate to drive the conductor winding to rotate, heat energy generated by electromagnetic induction is utilized to heat the molecular sieve, and molecular sieve regeneration is automatically completed.

The present invention provides a neon purification apparatus and neon purification method that can improve the efficiency of regenerating the adsorption capacity of the moisture removal section. [Solution] The neon purification apparatus according to the present invention comprises: a hydrogen oxidation unit that oxidizes hydrogen in a raw material gas containing neon, helium, nitrogen, and hydrogen; a moisture removal unit that adsorbs and removes moisture generated in the hydrogen oxidation unit from the raw material gas; a nitrogen removal unit that adsorbs and removes nitrogen from the raw material gas from which moisture has been adsorbed and removed in the moisture removal unit; a helium removal unit that separates and removes helium from the raw material gas from which nitrogen has been adsorbed and removed in the nitrogen removal unit; a separation gas supply line capable of supplying the separation gas separated and removed from the raw material gas in the helium removal unit to the moisture removal unit; and a mixed gas supply line capable of supplying a mixed gas, which is a mixture of rinse gas supplied to the nitrogen removal unit and desorbed gas desorbed from the nitrogen removal unit, to the moisture removal unit.

The utility model discloses a helium purification drying device, including operation platform, a plurality of groups of first base are installed to operation platform, and a part of a plurality of groups of first base is fixed with first box body on, and a plurality of groups of board body are installed on first box body. The utility model is purified to helium before using adsorbent, and helium first enters into first box body, and the low temperature stick is activated through the opening cryogenic control box, makes first box body produce low temperature, when reaches the high boiling point impurity temperature that contains in helium, and the impurity can become liquid state, then through the multiple board body that sets up in first box body, can let liquid from top to bottom flow into the bottom of first box body, after can through the drain outlet and discharge it, through adopting low temperature mode and removing a part of impurity with condensation method, then the gas impurity content of entering adsorption stage can reduce, like this can reduce the use amount and the replacement frequency of adsorbent, improve the service life of adsorbent to reduce production cost.

The utility model relates to the technical field of liquid argon purification rotating shafts, in particular to a high-purity liquid argon purification device. According to the technical scheme, the device comprises a fixed box, a top plate, an upper box body, a lower box body, a middle plate and a bottom plate, the upper box body is installed at the upper end of the fixed box, the lower box body is installed at the lower end of the fixed box, the middle plate is arranged in the fixed box, and a filter screen, porous ceramics, a first grid plate, a second grid plate and a third grid plate are installed in the middle plate in a penetrating mode; a top plate and a bottom plate are arranged at the two ends of the filter screen, the porous ceramic, the first grid plate, the second grid plate and the third grid plate, a first treatment chamber is arranged between the top plate and the middle plate, a second treatment chamber is arranged between the middle plate and the bottom plate, an upper butt joint frame is arranged in the upper box body, and a lower butt joint frame is arranged in the lower box body. The longitudinal position can be quickly adjusted through the treatment chamber I and the treatment chamber II, so that the problems of long downtime of equipment and tedious and time-consuming disassembly and assembly of the equipment during cleaning of an argon filtering assembly and an adsorption assembly are solved.

The utility model relates to a nitrogen recycling device in a krypton-xenon refining system. Comprising a krypton and xenon feed gas pipeline, the krypton and xenon feed gas pipeline is connected with a light component removal rectification part through a water removal unit, a tower kettle liquid outlet pipeline of the light component removal rectification part is connected with a krypton and xenon separation tower, the light component removal rectification part comprises a light component removal rectification tower, and a gas phase outlet of the light component removal rectification tower is connected with a condenser tube pass. A tube pass outlet of the condenser is respectively connected with a reflux inlet of the light component removal rectifying tower and a liquid oxygen storage tank; the moisture removal unit comprises a first channel of a first heat exchanger, and the first channel of the first heat exchanger is connected with a light component removal rectifying tower through an adsorber and a first channel of a second heat exchanger; the liquid nitrogen storage tank is connected with the regenerated gas buffer tank for the adsorber through a shell pass of the condenser and a second channel of the second heat exchanger; an outlet of the regenerated gas buffer tank for the adsorber is connected with the adsorber; the device is simple in structure and reasonable in design, and can realize long-time stable operation of a krypton and xenon refining system while realizing effective utilization of nitrogen cooling capacity and self.

The invention discloses a system and a method for purifying helium from multi-component mixed gas containing helium, and belongs to the technical field of gas purification. The system comprises a low-temperature cooling unit, a low-temperature adsorption unit and a helium product storage tank which are communicated in sequence, the low-temperature cooling unit comprises a feeding system, a low-temperature Dewar flask I and a gas-liquid separator; the gas-liquid separator is arranged in the low-temperature Dewar flask I; the low-temperature adsorption unit comprises a low-temperature Dewar flask II and an adsorption column; the adsorption column is arranged in the low-temperature Dewar flask II; multi-component mixed gas containing helium enters the gas-liquid separator through the feeding system to be separated, separated coarse helium enters the adsorption column through a pipeline, and a helium product adsorbed and separated by the adsorption column enters the helium product storage tank. The purification method adopting the system is simple and efficient, and does not need a catalytic dehydrogenation process. High-purity helium or ultra-pure helium with the purity larger than 99.999% can be obtained through one-time low-temperature condensation separation and one-time low-temperature adsorption separation.

The utility model relates to the technical field of helium recovery, and discloses a lithium battery leak detection helium recovery device which comprises a triangular block, a motor is fixedly connected in the triangular block, a pulley is fixedly connected to the output end of the motor, a belt is slidably connected to the outer wall of the pulley, an eccentric wheel is arranged on the inner wall of the belt, and the eccentric wheel is fixedly connected with the motor. A connecting rod is fixedly connected to the outer wall of the eccentric wheel, a groove plate is fixedly connected to one end of the connecting rod, rolling wheels are arranged on the two sides of the groove plate, sliding grooves are slidably connected to the outer walls of the rolling wheels, and a molecular sieve is arranged on the upper surface of the groove plate. The pulley fixedly connected with the output end of the motor drives the belt to rotate so as to drive the eccentric wheel to rotate, one end of the connecting rod is connected with the eccentric wheel, and the other end of the connecting rod is fixedly connected with the groove plate, so that the groove plate slides in the sliding groove through the rollers on the two sides, and the effect that molecular sieves in the groove plate are pushed to be more dispersed is achieved.

The object of the present invention is to provide a gas separation method and a gas separation device capable of stably increasing both the purity and the recovery rate of separated rare gas while reusing a discharged gas from a rare gas using facility. The present invention provides a gas separation method in which a rare gas separated by a pressure adsorption method as a first introduced gas, and an impurity gas separated by a pressure adsorption method as a second introduced gas are introduced into a raw material gas, and each of the flow rates of the first introduced gas and the second introduced gas is controlled based on each of flow rates of the rare gas and impurity gas in the discharged gas from a rare gas using facility (20); and a gas separation device including: an introduction pipe (L6) for introducing rare gas in a separation gas container (6) into a raw material gas, an introduction pipe (L7) for introducing impurity gases in the separation gas container (7) into the raw material gas, a flow meter (2) provided in a supply pipe (L1) for supplying a discharged gas of a rare gas using facility (20), and an arithmetic device (12), and the arithmetic device (12) is electrically connected to each of the flow meter (2), the flow rate controller (8), and the flow rate controller (9).

According to the argon recovery and purification system, an argon pretreatment module is connected in series with a separator, an activated carbon adsorption tower and a high-efficiency filter, so that macromolecular impurities such as particulate matters, oil, hydrocarbons and dust can be efficiently removed, and a clean gas source is provided for subsequent nano catalytic reaction and membrane separation; in the multistage fixed bed nano catalytic reactor, a composite nano catalyst bed layer and an electric heating wire have a synergistic effect, CO and O2 can be quickly and thoroughly converted into CO2 under moderate temperature and pressure, active sites on the surface of a nano-scale catalyst are rich, and the carbon deposition rate and the inactivation rate are greatly reduced; the screw compressor and the water cooler are combined for use, and the energy efficiency of the compression and cooling process is greatly improved compared with a traditional high-temperature and high-pressure process; preliminary separation is completed through hollow fiber membrane separation at normal temperature and normal pressure, after rectification load is relieved, argon-rich gas is precooled through a cold box and enters a low-temperature rectification tower after membrane separation, and high-purity argon gas can be stably prepared in combination with a liquid nitrogen refrigerant condensation evaporator and a spiral pipe type liquefier.

The invention belongs to the technical field of inert gas purification and recovery, and relates to a device for removing carbon, oxygen and hydrogen impurities from argon tail gas and a treatment method thereof, the device comprises a first reactor, a second reactor and a third reactor which are communicated in sequence; an inlet of the first reactor is connected with an argon tail gas conveying pipe and a hydrogen conveying pipe; a first regulating valve is arranged on the hydrogen conveying pipe; the first analyzer is connected to an outlet of the first reactor; the second analyzer is connected to an outlet of the second reactor; the temperature measuring unit is connected to an inlet of the second reactor; the control unit controls the opening degree of the first adjusting valve and the second adjusting valve. The device and the method have the advantages that the device and the method are used for removing carbon, oxygen and hydrogen impurities in argon tail gas, and can solve the problems of high potential safety hazard, high management difficulty, low recovery rate, investment increase and energy consumption increase caused by an excessive hydrogenation and oxygen removal process in the conventional argon recovery device and method; the process is effectively simplified, the equipment investment is reduced, the energy consumption is reduced, and the potential safety hazard is eliminated.

The invention discloses a helium-neon separation assembly for a fusion device, the helium-neon separation assembly comprises a first heat exchange device, a first cooling device, a second heat exchange device and a gas-liquid separator, the first heat exchange device is internally provided with a first flow channel and at least one second flow channel, the first flow channel selectively exchanges heat with the second flow channels, and the second flow channel selectively exchanges heat with the first cooling device; the first flow channel is suitable for circulating helium-neon mixed gas, a cooling cavity is formed in the first cooling device, a first heat exchange tube is arranged in the cooling cavity, an inlet of the first heat exchange tube is communicated with the first flow channel, the first cooling device is provided with a cooling inlet and a cooling outlet which are communicated with the cooling cavity, and the cooling outlet is communicated with one of the second flow channels; a third flow channel and a fourth flow channel which exchange heat with each other are arranged in the second heat exchange device, the third flow channel is communicated with an outlet of the first heat exchange pipe, the gas-liquid separator is provided with a medium inlet, a gas outlet and a liquid outlet, the medium inlet is communicated with the third flow channel, and the gas outlet is used for being connected with a fusion device.

The invention discloses a helium purification method capable of preventing catalyst poisoning, which comprises the following steps: cooling raw material gas until miscellaneous gas with liquefaction temperature equal to or higher than that of nitrogen in the raw material gas is liquefied, carrying out gas-liquid separation to obtain intermediate product gas containing neon gas, hydrogen gas and helium gas, and adsorbing the neon gas in the intermediate product gas at low temperature to obtain mixed gas, the miscellaneous gas contains nitrogen; hydrogen in the mixed gas is removed through a catalyst, so that a helium product is obtained, and at least one first type of gas capable of poisoning the catalyst exists in the offensive gas. The explosion risk can be eliminated, external gas is not needed, the process is simplified, and safety is improved. The temperature optimization catalytic reaction can improve the hydrogen removal rate and prolong the service life of the catalyst, the extraction of byproducts of high-purity hydrogen and neon can increase the resource utilization rate, and the limitation of the traditional process is broken through.