44 results about "Neon" patented technology

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 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.

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 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.

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 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 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.

A system is provided, including an analyzer that analyzes components contained in a gas. The analyzer includes: a filter configured to pass components contained in the gas selectively; a detector configured to detect components that have passed through the filter; and a first control apparatus configured to set the filter so that the detector detects, as neon that is a main component included in the gas, an isotope 21Ne that has a low abundance ratio in place of an isotope 20Ne that has a high abundance ratio.

A working fluid for a heat cycle, contains: trifluoroethylene; and a first component consisting of at least one of substance selected from carbon dioxide, fluoromethane, trifluoroiodomethane, methane, ethane, propane, helium, neon, argon, krypton, xenon, nitrogen and ammonia.

Provided is a system (100) having an analysis device (1) for analyzing components contained in a gas (9). This analysis device is provided with: a filter (25) through which components contained in a gas selectively pass; a detector (26) that detects the component that has passed through the filter; and a first control device (36) configured so that the detector (26) detects a low-abundance isotope (21Ne), which is neon as the main component contained in the gas, and does not detect a high-abundance isotope (20Ne).

The invention belongs to the technical field of special gas purification, and particularly discloses a porous adsorption material for removing neon in helium and a preparation method of the porous adsorption material. The method comprises the following steps: (1) preparing a lignin raw material subjected to fermentation treatment; (2) preparing a carbon precursor; (3) placing the carbon precursor in a mixed solution containing a metal salt and a surfactant, stirring and dipping to obtain a metal salt dipped carbon precursor; (4) washing the metal salt impregnated carbon precursor, removing excessive deposited metal salt, and drying to obtain a cleaned carbon precursor; and (5) carrying out activated pore-forming on the cleaned carbon precursor by using carbon dioxide at a high temperature to obtain the porous adsorption material for removing neon in helium. The porous carbon adsorption material prepared from renewable natural biomass raw materials has a uniformly distributed pore diameter structure, has very high adsorption and capture capability on neon gas under a low-temperature condition, and can effectively remove neon gas impurities in helium gas.

The application discloses a helium purification method capable of preventing catalyst poisoning, and comprises the following steps: cooling raw material gas until the impurity gas with liquefaction temperature equal to or higher than nitrogen is liquefied, and obtaining intermediate product gas containing neon, hydrogen and helium through gas-liquid separation; and low-temperature adsorption of neon in the intermediate product gas to obtain mixed gas, wherein the impurity gas contains nitrogen; and hydrogen in the mixed gas is removed by using a catalyst to obtain helium product, wherein at least one first type of gas capable of poisoning the catalyst exists in the impurity gas. The application can eliminate the risk of explosion, does not need external gas, simplifies the process and improves safety. Temperature optimization of the catalytic reaction can improve the hydrogen removal rate and the catalyst life, and the extraction of high-purity hydrogen and neon as byproducts can increase resource utilization, and break the limitation of traditional processes.

A neon purification device according to the present invention comprises: an adsorption unit that adsorbs and removes nitrogen from a mixed gas containing neon, helium, and nitrogen; a separation unit that separates and removes helium from the nitrogen-removed gas from which nitrogen has been adsorbed and removed by the adsorption unit; and a regeneration gas introduction line that can introduce a separation gas containing helium separated and removed by the separation unit into the adsorption unit as a regeneration gas for regenerating the adsorption capacity of the adsorption unit.

To provide a neon purification device and a neon purification method that are able to efficiently purify neon from a gas containing neon, nitrogen, and helium.SOLUTION: A neon purification device according to the present invention comprises: an adsorption unit that adsorbs and removes nitrogen from a mixed gas containing neon, helium, and nitrogen; a separation unit that separates and removes helium from the nitrogen-removed gas obtained by the adsorption unit adsorbing and removing nitrogen; and a regeneration gas introduction line that can introduce a separation gas containing helium separated and removed by the separation unit into the adsorption unit as a regeneration gas for regenerating the adsorption capacity of the adsorption unit.SELECTED DRAWING: Figure 1

A metal boron oxide Me(BO2) n Preparation of metal borohydride Me(BH4) n A method wherein Me is a metal or a molecule that exhibits metal-like behavior and can function as a metal, and n is an integer that can be correlated with the valence of the metal, wherein in a first fluidized bed step, a metal boron oxide is provided in a first fluidized bed. The first fluidized bed uses a gas selected from at least one of nitrogen N2 gas and a rare gas, optionally, the rare gas is selected from at least one of helium He; neon Ne; argon Ar; and xenon Xe, and oxygen atoms are removed from the metal boron oxide to provide a metal boride MeB. n The particles, which may be ions, are fluidized in an environment, particularly pressure and temperature. In a subsequent second fluidized bed step, the metal boride particles are provided in a second fluidized bed, which is fluidized using hydrogen gas, H2 gas, in an environment in which the hydrogen gas chemically reacts with the metal boride particles to provide metal borohydride.

A method is provided for manufacturing neon from a raw material mixed gas containing neon, helium, hydrogen, and nitrogen, which reduces the load on an adsorption tower and enables the efficient production of neon. A method for manufacturing neon from a raw material mixed gas containing neon, helium, hydrogen, and nitrogen comprises: a hydrogen gas conversion process in which hydrogen gas is converted into water by contacting the raw material mixed gas and an oxygen-containing gas with a catalyst; a moisture removal process in which water is removed from the gas obtained through the hydrogen gas conversion process; a first nitrogen rectification separation process in which nitrogen is removed by rectifying the gas obtained through the moisture removal process; an impurity gas adsorption separation process in which nitrogen is removed by contacting the gas obtained through the first nitrogen rectification separation process with an adsorbent; and a helium rectification separation process in which helium gas is removed by rectifying the gas obtained through the impurity gas adsorption separation process.

To provide a method of producing neon from a raw material mixed gas containing neon, helium, hydrogen, and nitrogen which can reduce a burden exerted an adsorption tower to produce neon efficiently, and to provide a device capable of efficiently producing neon.SOLUTION: A method of producing neon from a raw material mixed gas containing neon, helium, hydrogen, and nitrogen includes: a hydrogen gas conversion step in which the raw material mixed gas and an oxygen containing gas are placed in contact with a catalyst to convert a hydrogen gas into water; a water removal step in which water is removed from the gas obtained through the hydrogen gas conversion step; a first nitrogen rectification separation step in which the gas obtained through the water removal step is rectified to remove nitrogen; an impurity gas adsorption separation step in which the gas obtained through the first nitrogen rectification separation step is placed in contact with an adsorbent to remove nitrogen; and a helium rectification separation step in which the gas obtained through the impurity gas adsorption separation step is rectified to remove a helium gas.SELECTED DRAWING: Figure 1