58 results about "Neon" patented technology

The invention relates to a purification device system and method for oxygen, nitrogen and crude neon and helium, based on a non-low-temperature gas purification technology, hydrogen removal of crude neon and helium is coupled with regeneration of a nitrogen deoxidizing adsorbent, purification of nitrogen is coupled with a regeneration process of removing carbon dioxide and water from oxygen, and linkage purification and impurity removal of oxygen, nitrogen and crude neon and helium can be carried out. Therefore, efficient purification of nitrogen, oxygen and crude neon and helium is achieved.

A feed gas including neon, nitrogen, and helium is cooled in a heat exchange system to a first temperature to produce a two-phase mixture that is introduced into a first phase separator and separated into a nitrogen-rich liquid and a first gaseous crude neon stream. The pressure is reduced in at least a portion of the nitrogen-rich liquid, which is vaporized in the heat exchange system to generate a portion of the refrigeration therein. The first gaseous crude neon stream is introduced into a first adsorber that removes impurities such as nitrogen. The gaseous crude neon stream is further cooled to a second temperature. A portion of the cooling duty may come from the heat exchange system and another portion may come from a cryocooler to produce a two-phase stream. The two-phase stream is separated in a second phase separator into a crude helium vapor stream and a crude neon liquid stream with the latter being introduced into a distillation column to produce a vent stream containing a helium impurity and a pure liquid neon product. The pure liquid neon product is vaporized in the heat exchange system to generate refrigeration and produce the pure gaseous neon product.

The present invention relates to the technical field of special gas purification, and specifically discloses a porous adsorption material for removing neon from helium and a preparation method thereof. The method comprises the following steps: (1) preparing a lignin raw material treated by fermentation; (2) preparing a carbon precursor; (3) placing the carbon precursor in a mixed solution containing a metal salt and a surfactant, stirring and impregnating to obtain a carbon precursor impregnated with the metal salt; (4) washing the carbon precursor impregnated with the metal salt to remove the excessively deposited metal salt, and drying to obtain a washed carbon precursor; (5) activating and creating pores in the washed carbon precursor with carbon dioxide at a high temperature to obtain a porous adsorption material for removing neon from helium. The porous carbon adsorption material prepared by the present invention using renewable natural biomass raw materials has a uniformly distributed pore structure and has a high adsorption and capture ability for neon under low-temperature conditions, and can effectively remove neon impurities in helium.

The invention provides a neon removal system for producing high-purity helium, and particularly relates to the technical field of gas purification, and the neon removal system for producing the high-purity helium comprises a circulation unit and a purification unit, wherein the circulating unit comprises a compressor, an oil filtering device, a first heat exchanger, a second heat exchanger, a first adsorber group, a third heat exchanger, an expansion machine and a fourth heat exchanger; the circulating unit further comprises a liquid nitrogen source, a pipeline of the liquid nitrogen source is connected with one inlet of the second heat exchanger, and the liquid nitrogen source is connected to the outside from an outlet of the second heat exchanger; the purification unit comprises a first heat exchanger, a second heat exchanger, a third heat exchanger and a second adsorber group, through pre-cooling of the liquid nitrogen source and expansion of the expansion machine, the raw material helium is cooled to 20 K, then freezing condensation separation is conducted through the second adsorber group in the 20 K temperature zone, and high-purity helium which is lower in neon content and meets the requirement can be obtained.

The invention relates to the field of gas purification, in particular to a high-purity helium purification system which comprises a heat exchanger, a turbo expander and a first adsorption tower which are sequentially connected through a pipeline, a pressure regulating valve is arranged on the pipeline, the pressure of external dirty helium is regulated to a set value through the pressure regulating valve, then the helium is fed into the heat exchanger, and purified low-temperature helium is fed into the heat exchanger. External dirty helium exchanges heat with pure helium, then is further cooled through the turbo expander, flows to the adsorption tower to adsorb hydrogen and neon impurities in the helium, and then is introduced into the heat exchanger to exchange heat with the dirty helium, and finally purified helium is obtained. The device and the method have the advantages that the dirty helium with hydrogen and neon exceeding the standard can be treated, and high-purity helium with stable product quality is obtained.

The disclosure provides a test device and a test method for isotope measurement of noble gases in lunar soil. The testing device includes a carbon dioxide laser ultra-high vacuum sample melting system, zirconium-aluminum getters, a vacuum dry pump, a first molecular pump, a second molecular pump, a neon gas capture unit, an argon gas capture unit, an argon krypton-xenon capture unit, a dilution tank, a sputtering ion pump and a noble gas mass spectrometer which are connected through pipelines, and each pipeline and each component are connected through a specific way; in addition, control valves for controlling the opening and closing of the pipelines are installed on the connection path between each pipeline and each component, and the disclosure also provides a matching test method.

The invention discloses a microporous metal organic framework material, a preparation method and a rare gas separation method, and belongs to the technical field of chemical adsorption separation, the microporous metal organic framework material is constructed by coordination of divalent metal ions, heterocyclic dicarboxylic acid ligands and nitrogen-containing heterocyclic ligands; divalent metal ions and heterocyclic dicarboxylic acid ligands are coordinated to form a two-dimensional polymer, and nitrogen-containing heterocyclic ligands serve as pillared bodies and are coordinated with the two-dimensional polymer to form a three-dimensional frame structure. A microporous metal organic framework material is used as an adsorbent and is in contact with a rare gas mixture, so that high-polarity rare gas is recognized and captured, and separation and purification of the rare gas are achieved. According to the invention, by changing different ligands and functional group substituents thereof, precise regulation and control of a pore chemical electrostatic environment are realized, so that selective separation of rare gases such as xenon / krypton, helium / neon and the like is realized.

Provided are a neon purification device and a neon purification method capable of efficiently purifying neon from a gas containing neon, nitrogen, and helium. [Solution] The neon purification apparatus of the present invention comprises an adsorption section that adsorbs and removes nitrogen from a mixed gas containing neon, helium and nitrogen, a separation section that separates and removes helium from the nitrogen-removed gas from which nitrogen has been adsorbed and removed in the adsorption section, and a regeneration gas introduction line that can introduce a separated gas containing helium separated and removed in the separation section into the adsorption section as a regeneration gas that regenerates the adsorption capacity of the adsorption section.

The invention provides a method and equipment for preparing crude neon, and relates to the technical field of industrial gas separation. The method comprises the steps of raw material gas acquisition and pretreatment, preliminary adsorption separation, low-temperature rectification separation, further purification and product collection and filling. According to the method, a covalent organic framework material is adopted as an adsorbent, adsorption and rectification conditions are optimized, and membrane separation and secondary adsorption purification technologies are combined, so that neon is efficiently extracted from synthesis ammonia tail gas. The equipment covers raw material gas collection, pretreatment, adsorption separation, rectification, deep purification and filling devices, is equipped with an automatic control system and a safety protection system, and ensures stable, efficient and safe operation. Through combination of multiple technologies, the neon recovery rate and purity are remarkably improved, and energy consumption is reduced.

The application provides a device for coupling xenon isotope separation and neon-helium purification separation and a use method thereof. Based on various non-low-temperature gas separation technologies, through multi-stage module cooperation, high-efficiency enrichment of xenon isotope raw material gas under non-low-temperature conditions and purification and purification of air separation crude neon-helium gas are coupled, including thermal coupling and intermediate material coupling. The crude neon-helium gas produced in the process is fully utilized, the energy consumption and operation complexity are significantly reduced, and the development advantage can be further improved.

The invention belongs to the field of research and development and technical application of gas adsorption separation materials, and discloses a preparation method and application of a carbon molecular sieve neon / helium separation adsorbent. The carbon molecular sieve adsorbent is prepared by pyrolysis and carbonization of a polyimide precursor with an adjustable structure. Monomers with carboxylic acid groups are introduced in synthesis of a polyimide precursor, the molar ratio of the monomers is adjusted, the structure of the carbon molecular sieve is regulated and controlled through the pre-crosslinking effect in the subsequent carbonization process, more defect and sub-micropore structures can be formed, and therefore neon selective adsorption micropores are achieved. The obtained neon / helium separation adsorbent has the advantages of being large in neon adsorption capacity, high in neon / helium adsorption separation selectivity, good in stability and reproducibility, easy to produce on a large scale and the like, and has wide prospects in preparation of high-purity and ultra-high-purity helium and purification and separation application of electronic special gas.

The present invention relates to a purification device system and method for oxygen, nitrogen and crude neon and helium gases. Based on non-cryogenic gas purification technology, the dehydrogenation of crude neon and helium gases is coupled with the regeneration of nitrogen deoxygenation adsorbent, and the nitrogen purification is coupled with the regeneration process of oxygen removal of carbon dioxide and water. The oxygen, nitrogen and crude neon and helium gases can be purified and impurities removed in a linked manner, thereby realizing efficient purification of nitrogen, oxygen and crude neon and helium gases.

The utility model discloses a plasma ring generating device which comprises a base, a driving circuit assembly is arranged in the base, the upper end of the base is connected with a transmitting assembly, and the outside of the driving circuit assembly is connected with a heat dissipation assembly. The emission assembly comprises a transparent ball, the transparent ball is filled with pure gas, and the key points of the technical scheme are that the emission assembly is arranged, the transparent ball is filled with the pure gas, the gases comprise helium, neon, argon, krypton, xenon, nitrogen, carbon dioxide and the like, different gases can generate plasma rings with different colors, and the plasma rings can be emitted by the emission assembly. The luminous plasma has a good visual effect, can be used for teaching and displaying excited states of different chemical elements and selling as toys, has science and education significance and commercial value, and is used for solving the problems that most existing plasma ring generation devices can be only used in experiments or teaching, are not daily enough, and are inconvenient to use. And the teaching value and the commercial value are difficult to have at the same time.

The invention discloses a filling method for an atomic air chamber of an atomic clock. The method comprises the following steps: cleaning an atomic gas chamber by adopting an acetone solution, a hydrochloric acid solution and supercritical CO2 in sequence; the cleaned atomic gas chamber is put into a drying oven with ultraviolet light irradiation to be baked, and a pulse type vacuum-inert gas exchange environment is introduced into the atomic gas chamber through a connector of the atomic gas chamber, so that a passivation layer is formed on the inner wall of the atomic gas chamber; the inflation system inflates alkali metal steam and buffer gas into the cooled atomic gas chamber, the buffer gas is neon gas and carbon monoxide, and in the inflation process of the atomic gas chamber, the proportion of the neon gas and the carbon monoxide is adjusted based on the inflation amount of the alkali metal in the atomic gas chamber and the temperature of the atomic gas chamber; and sealing the atomic gas chamber under the condition that the alkali metal steam and the buffer gas in the atomic gas chamber reach set values. The problem that in the prior art, the filling precision of the atomic gas chamber is low due to the fact that the filling process of the atomic gas chamber is simple and extensive is solved.

The utility model belongs to the technical field of rare gas extraction and concentration, and particularly relates to a crude helium-neon concentration device, which comprises a rectifying tower, a condensing evaporator, a vaporizer, a buffer tank and a film press, the condensing evaporator is arranged on the upper portion of the inner side of the rectifying tower, the vaporizer is connected with the rectifying tower through a pipeline, and the buffer tank is connected with the vaporizer through a pipeline. The film press is connected with the buffer tank through a pipeline, the condensation evaporator comprises a shell, a first liquid nitrogen inlet and a nitrogen outlet are formed in the top of the shell, a second liquid nitrogen inlet is formed in the bottom of the shell, and a hot fluid inlet and a hot fluid outlet are formed in the side wall of the shell; the air guide pipe is arranged in the shell, and the air guide pipe is connected with the hot fluid inlet and the hot fluid outlet; the flow guide pipes are arranged outside part of the air guide pipes in a sleeving manner; a plurality of flow dividing holes are formed in the flow dividing plate, and the flow guide pipes are communicated with the flow dividing holes. The device can reduce the energy consumption of the concentrated helium-neon gas and enhance the working efficiency of the condensation evaporator.

Provided is a system (100) having an analysis device (1) that analyzes components contained in a gas (9). The analysis device comprises: a filter (25) that selects and passes a component contained in a gas; a detector (26) that detects the component that has passed through the filter; and a first control device (36) configured to set a filter (25) such that the detector (26) detects a high abundance isotope 21Ne instead of a low abundance isotope 20Ne, as neon which is a main component contained in the gas.

The present invention discloses a shield earth bunker gas risk assessment method based on neon gas simulation gas escape, the method comprising the following steps: 1. constructing a neon gas simulation gas escape test device; 2. using the neon gas simulation gas escape test device to simulate the shield earth bunker gas escape process; 3. according to the neon gas concentration value data at different positions in the simulated earth bunker obtained by the simulation test, combined with the neon gas escape law, using the LSSVM regressor to construct a gas hazard point inversion model; 4. based on the gas risk classification standard, combined with the gas hazard point inversion model, assess the shield earth bunker gas risk level. The neon gas simulation gas escape test device of the present invention can accurately simulate the process of stratum gas overflow at different flow rates and different positions, the test process is easy to operate, highly safe, and can achieve the purpose of assessing the gas risk in the earth bunker, laying a foundation for the safe construction of gas water conservancy tunnels.

The invention discloses a multi-productization high-purity helium purification method which comprises the following steps: S1, cooling helium feed gas containing neon gas and high-boiling-point gas to a first temperature interval, and adsorbing and removing liquefied high-boiling-point gas through a first adsorption tank to obtain helium mixed gas without the high-boiling-point gas; s2, the helium mixed gas with the high-boiling-point gas removed is cooled to a second temperature interval, neon is solidified and separated in the freezing tank, and unliquefied helium containing a trace amount of neon is output; s3, unliquefied helium containing trace neon is introduced into a second adsorption tank to adsorb residual neon, and a high-purity helium product is obtained; and S4, the solidified neon gas in the freezing tank is heated and gasified, and the recycled pure neon gas is output. According to the invention, a purification method of low-temperature freezing and multi-stage adsorption is adopted, so that the obtained product gas meets the requirement of ultra-pure helium and can also meet the use requirement of helium in the semiconductor industry, the working stages of the adsorption tank and the freezing tank can be automatically switched, and automatic control and continuous production are realized.

The invention belongs to the field of mass spectrum ionization, and particularly relates to a photoinduced Penning ionization mass spectrum method. Photoelectrons generated by a photoelectric effect accelerate in an electric field to obtain enough energy, helium He, neon Ne and argon Ar in ground states are excited to metastable states, and the energy of the metastable states of the neutral atoms is higher than 10.6 eV (He excitation energy is 20.62 eV and 19.82 eV); the excitation energy of Ne is 16.72 eV, and the excitation energy of Ne is 16.62 eV; the excitation energy of Ar is 11.72 eV and 11.55 eV), sample molecules with ionization energy higher than photon energy and incapable of being ionized by traditional photoionization can be ionized through Penning ionization, so that the reduction of mass spectrum resolution, sensitivity and quantitative capacity caused by a space charge effect caused by coulomb repulsion among too strong reagent ions in an ion transmission process is avoided, and the detection sensitivity is improved. And damage of too strong reagent ions to the ion detector. The sensitivity can be improved by about 5 times for sample molecules ionized by traditional photo ionization energy, such as toluene, with ionization energy lower than photon energy.

The present application relates to the technical field of adsorption, and particularly relates to a low-temperature pressure swing adsorption method for efficiently removing neon and hydrogen from helium, comprising the following steps: S1. adsorbing raw gas containing helium and impurity gas in an adsorber; adsorbing the impurity gas on the adsorbent to obtain product helium with low impurity gas content from a non-adsorption phase; S2. sequentially performing regeneration one, regeneration two, regeneration three and regeneration four. Through the method of the present application, the product helium obtained from the non-adsorption phase has low impurity content, wherein the volume concentration of neon is less than 4 ppm, and the volume concentration of hydrogen is less than 1 ppm; and the method has low helium loss rate.

The invention relates to the technical field of neon and helium gas separation, in particular to a neon and helium rare gas separation refiner and a method thereof. Comprising a tower body and a base at the bottom of the tower body, the internal space of the tower body is divided into an upper cavity, a middle cavity and a lower cavity from top to bottom; an air outlet pipe is arranged at the upper position of the upper cavity in a communicating manner; a liquid inlet pipe is arranged at the lateral position of the upper cavity in a communicating manner; a liquid outlet pipe is arranged at the lateral position of the lower cavity in a communicating manner; a central rod is vertically arranged in the center of the tower body; a spiral plate sleeves the outer wall of the central rod and is positioned in the middle cavity; the outer edge of the spiral plate is in sealing contact with the inner wall of the tower body; the mixed liquid rolls along the upper surface of the spiral plate from top to bottom and makes contact with helium flowing from bottom to top, compared with existing mixed liquid advection and helium contact, the contact area of the mixed liquid and the helium is increased, and therefore the heat transfer effect of the helium and the mixed liquid is improved, and the neon and helium separation efficiency of the mixed liquid is improved.

The present invention discloses a neon-based indoor simulation test method for tunnel shield slag gas emission, comprising: 1. constructing a simulation test device; 2. preparing neon gas capsules; 3. preparing simulated soil samples; 4. simulating the emission of slag gas with neon gas; 5. analyzing test data to obtain the emission law of slag gas. The simulation test process of the present invention is reasonably designed, and the simulation test device is used to simulate the emission of gas in the tunnel shield slag discharge process by using neon gas, and the emission law of neon gas in the simulated soil sample discharge process can be obtained. The inversion model of soil bin gas content is constructed by random forest algorithm to obtain the emission law of slag gas, and the emission law of gas accompanying slag discharge can be reflected by simulation test data.

A leak check method for a laser device includes exposing a closed space accommodating laser medium gas to the atmosphere, isolating the closed space from the atmosphere after exposing the closed space to the atmosphere, introducing neon-containing gas containing neon gas to the closed space, and determining whether or not the neon gas is leaking to outside of the closed space.

The present invention relates to the field of ultra-high vacuum mass spectrometry technology for rare gas separation and analysis, and in particular to a triple iterative capture type full-series rare gas isotope separation and analysis method. The present invention has developed a set of rare gas pretreatment system, which includes a stainless steel water vapor catcher, two SEAS ST-172getters, three stainless steel wire mesh liquid nitrogen cold traps, an activated carbon liquid nitrogen cold trap and an activated carbon temperature-controlled cold trap, and a single injection realizes the separation and analysis of a full range of rare gases such as helium, neon, argon, krypton and xenon. The capture and separation efficiency of krypton reaches 98%, reaching the international leading level. The capture and separation efficiency of the rare gas processing and analysis method for helium, neon, argon, krypton and xenon is all above 98%, and the content of each residual component is less than or equal to 2%. The present invention solves the problem of separation of rare gases, especially argon and krypton, and makes it possible to test all rare gas stable isotopes with high precision by single injection.

The invention discloses a method for crushing a sintered neodymium-iron-boron magnet through jet milling by using neon. Firstly, magnet coarse particles subjected to hydrogen decrepitation treatment are placed in a jet mill grinding chamber, then neon flowing at a high speed is introduced, powder particles are further crushed and enter a sorting device by adjusting the neon flowing speed and the ventilation time, particles larger than the specified size return and continue to be crushed, powder smaller than the specified size is separated, and particles with too small sizes are removed; and finally, powder with the particle size of 2.5-4 microns is obtained. Compared with a traditional airflow milling method using nitrogen, the neon gas is adopted, the powder particle size is successfully controlled within the ideal single domain critical size range, and meanwhile the powder flowability and the filling density are improved. The process compatibility and the forming efficiency of the magnetic powder in the subsequent magnetic field orientation and pressing forming process are remarkably improved, the nitridation reaction of rare earth elements is avoided due to the chemical inertness of neon, the nitrogen content of the magnetic powder is remarkably reduced, and a foundation is laid for obtaining a magnet with better performance.

A neon refining device and a neon refining method are provided that can improve the efficiency of refining neon. [Solution] The neon purification apparatus of the present invention comprises a first adsorption section that adsorbs and removes nitrogen and argon from a raw material gas, a cooling section that cools the raw material gas from which nitrogen and argon have been adsorbed and removed in the first adsorption section to produce a cooled gas, and a second adsorption section that adsorbs and removes one or both of nitrogen and argon from the cooled gas.

A neon purification device according to the present invention comprises: a first adsorption unit that adsorbs and removes nitrogen and argon from a raw material gas; a cooling unit that cools the raw material gas from which nitrogen and argon have been adsorbed and removed by the first adsorption unit to obtain a cooling gas; and a second adsorption unit that adsorbs and removes one or both of nitrogen and argon from the cooling gas.

The present invention provides a method for establishing a standard curve of helium content in neon gas, a method for detecting the helium content in neon gas, and a detection device, which relate to the technical field of analytical detection. The method for establishing a standard curve of helium content in neon gas provided by the present invention includes the following steps: mixing the neon gas to be measured and a helium standard gas in neon to obtain a series of helium standard gases with different concentrations; the concentration difference between the series of helium standard gases with different concentrations and the neon gas to be measured is the increased concentration of helium; using a helium mass spectrometer leak detector to detect the series of helium standard gases with different concentrations to obtain the response values of the series of helium standard gases with different concentrations; taking the increased concentration of helium as the abscissa and the response values of the series of helium standard gases with different concentrations as the ordinate to obtain a standard curve of the response value and the increased concentration of helium. The standard curve established by using the method provided by the present invention can achieve a detection limit of 0.1 ppm, and has high accuracy and good precision.

Provided is an insulating gas replacement method that can sufficiently achieve the effect of preventing global warming and that can efficiently execute replacement of insulating gas. This insulating gas replacement method comprises a recovery step (ST10), an encapsulation step (ST20), and an atmospheric pressure test step (ST30), and involves replacing a first insulating gas in a gas insulated switchgear (100) with a second insulating gas (20) having a global warming potential lower than that of the first insulating gas (10). In the recovery step, the first insulating gas is recovered from the interior space of a sealed tank (101). In the encapsulation step, the second insulating gas is introduced and encapsulated in the interior space of the sealed tank from which the first insulating gas has been recovered. In the atmospheric pressure test step, an atmospheric pressure test is executed on the gas insulated switchgear. The second insulating gas comprises at least one substance selected from oxygen, carbon dioxide, nitrogen, helium, neon, argon, xenon, and krypton. The recovery step, the encapsulation step, and the atmospheric pressure test step are each executed at a location where the gas insulated switchgear is installed.

The invention discloses a device for adsorbing and removing neon in helium at an ultralow temperature. The device comprises an ultralow temperature chamber, a gas source pipe, a plurality of selective adsorption treatment units, a pure gas pipe, an auxiliary pipe, a desorption control system and a temperature adjusting system, the selective adsorption treatment unit comprises a shell, an adsorption assembly and an adsorption promoting assembly. The neon adsorption capacity of the molecular sieve can be increased, meanwhile, the regeneration speed of the molecular sieve and the neon desorption capacity are improved, and therefore the helium purity and purification efficiency are improved.