77 results about "Oxidized nitrogen" patented technology

The invention relates to the technical field of automobile air purification, and particularly discloses a filtering material, a preparation method of the filtering material and a novel automobile air conditioner multi-effect catalytic formaldehyde removal filter. The filtering material comprises a PET (Polyethylene Terephthalate) supporting layer, a gas filtering layer and a PP (Polypropylene) electrostatic filtering layer which are arranged in sequence, the gas filtering layer is prepared from the following raw materials in parts by weight: 30 to 90 parts of activated carbon and 10 to 70 parts of manganese catalyst. The gas filtering layer composed of the activated carbon and the manganese catalyst is matched with the filtering material composed of the PET supporting layer and the PP electrostatic filtering layer, four gases of n-butane, methylbenzene, sulfur dioxide and nitrogen dioxide can be adsorbed, the manganese catalyst degrades formaldehyde at normal temperature, meanwhile, the reaction on the formaldehyde is a catalytic reaction, and the environment-friendly effect is achieved. Therefore, the filter material disclosed by the invention also has longer service life, so that a filter made of the filter material has a better formaldehyde removal effect and longer service life.

The utility model discloses a diesel generator flue gas purification mechanism for civil air defence engineering, including air inlet pipe and purification bin, the air inlet pipe one end is linked with diesel generator exhaust pipe in civil air defence engineering power generation room intercommunication, the other end of air inlet pipe is inserted into the purification bin and the opening direction is perpendicular to downward, the open end position of air inlet pipe in the purification bin is connected with the shunt joint, each interface of shunt joint all is connected with the jet pipe that the air hole of pipe body lateral wall is evenly set up, the utility model relates to civil air defence engineering technical field, utilize liquid supply booster pump and press into the spray subassembly in alkaline solution (15% magnesium hydroxide compound agent), and further via spray subassembly to the spray of filler layer, make the nitrogen monoxide, nitrogen dioxide, sulfur dioxide and particulate matter etc. in tail gas contact with the alkaline water mist in purification bin and filler layer, to the purification treatment of nitrogen monoxide, nitrogen dioxide, sulfur dioxide and particulate matter.

The utility model discloses a reaction device for normal-pressure leaching of nitric acid, which is characterized in that in the reaction process, nitric oxide in a reaction kettle enters an absorption tower through a nitric oxide exhaust outlet, a first pipeline and a nitric oxide gas inlet, and an oxygen supply device supplies oxygen to the absorption tower; an absorption liquid circulating pump I conveys an absorbent in the absorption tower circulating device to an absorbent circulating inlet I and enters the absorption tower, the absorbent absorbs nitric oxide gas to form nitric acid, nitric oxide released in the process reacts with oxygen to generate nitrogen dioxide, and the nitrogen dioxide reacts with the absorbent to generate nitric acid; according to the device, nitrogen oxide gas generated in the reaction process can be absorbed, the obtained absorption acid (nitric acid) can be cyclically applied to the leaching reaction, and tail gas can be discharged after reaching the standard. And the method is environment-friendly.

The invention provides a heat pipe enhanced heat exchange reducing absorption tower for nitric acid preparation, which comprises a tower body and a heat pipe exchanger, nitric oxide gas enters from the tower bottom, absorption liquid enters from the tower top, and the nitric oxide gas and the absorption liquid contact and react in the tower body to generate nitric acid, and is characterized in that the tower body is divided into a plurality of sections from top to bottom, the diameters of the sections are different, and the diameters of the sections are different in the direction from top to bottom; the diameter of the tower body is gradually increased; a plurality of heat pipe heat exchangers are arranged, an inclined angle is formed between the heat pipe heat exchangers and the tower body, an evaporation section of each heat pipe is arranged in the tower body, and a condensation end of each heat pipe extends out of the tower body. The design of the reducing absorption tower is matched with the concentration of nitrogen oxide, so that the absorption efficiency can be remarkably improved.

The invention discloses a method for relieving and eliminating sewage anaerobic fermentation stink. The method comprises the following steps: mixing malodorous gas generated by anaerobic fermentation with nitrogen dioxide, and carrying out gas-phase oxidation reaction; the reacted gas is subjected to ultraviolet photolysis treatment, so that nitrogen dioxide is decomposed to generate ozone; and the generated ozone is utilized to continuously oxidize the malodorous substances. The method can also comprise a source sulfur fixation step: adding a sulfur fixation agent into the anaerobic fermentation system, and reducing the generation of hydrogen sulfide from the source. Nitrogen dioxide can be prepared from steel cylinder gas, industrial waste gas or on site, and the on-site preparation comprises an ammonia water / ammonium salt catalytic oxidation method and a nitric acid reduction method. Through multi-stage cooperation of'source sulfur fixation + NO2 gas-phase oxidation + UV ozone conversion + ozone continuous oxidation ', efficient removal of malodorous gas is achieved, an ozone generator does not need to be additionally arranged, nitrogen dioxide residues are thoroughly eliminated, secondary pollution is avoided, equipment is compact, and the operation cost is low.

The invention relates to the technical field of adsorbents, in particular to a multi-element gas adsorbent as well as a preparation method and application thereof. The preparation method of the multi-element gas adsorbent provided by the invention is simple, economic and environment-friendly, and is suitable for industrial large-scale production. The prepared adsorbent is regular in morphology and rich in various active sites, and sulfur dioxide, nitrogen dioxide and ammonia gas in air can be effectively adsorbed. Compared with the prior art, the CHO-SBA-PEI multi-element gas adsorbent prepared by the preparation method disclosed by the invention combines a mesoporous structure (high specific surface area and regular pore channels) of SBA-15, amino active sites of PEI and aldehyde groups modified in the pore channels of SBA-15, not only realizes multi-element absorption of SO2, NO2 and NH3, but also has high adsorption capacity, and can effectively purify gas entering a hydrogen energy fuel cell. The preparation process is simple and controllable, does not need special equipment, is easy for large-scale production, and is suitable for industrial application of the hydrogen energy fuel cell air filter.

The present invention relates to a method for removing nitric oxide, nitrogen dioxide, and nitrous oxide from an exhaust gas stream obtained during nitration, the method comprising: (a) removing nitric oxide and nitrogen dioxide from the exhaust gas stream by adding an oxygen-containing gas to the exhaust gas stream to oxidize the nitric oxide in the gas stream to form nitrogen dioxide, thereby obtaining a nitric oxide-deficient gas stream; (b) washing the nitric oxide-deficient gas stream with water to obtain a nitric oxide- and nitrogen dioxide-deficient gas stream; and (c) converting the nitrous oxide in the nitric oxide- and nitrogen dioxide-deficient gas stream into nitrogen and carbon dioxide, and optionally oxygen, in the presence of a nitrous oxide reduction catalyst and in the presence of hydrogen cyanide.

This application provides a method, apparatus, device, and storage medium for monitoring carbon and nitrogen emission data of emission sources. The method acquires observed concentration data of carbon dioxide, nitrogen dioxide, and wind field data for a target emission source; it performs spatiotemporal alignment and correlation of the carbon dioxide and nitrogen dioxide concentration observation data to obtain multiple observation data pairs; if preset plume identification conditions are met, it fits the plume concentration distribution based on the multiple observation data pairs to obtain the linear density of carbon dioxide and the linear density of nitrogen dioxide; using a nitrogen dioxide concentration decay correction model characterizing the chemical change law of nitrogen dioxide during atmospheric transport, it corrects the nitrogen dioxide linear density to obtain the linear density of nitrogen oxides; and based on the carbon dioxide linear density and the nitrogen oxide linear density, it determines the carbon-nitrogen emission rate ratio of the target emission source. The embodiments of this application can improve the accuracy of the carbon-nitrogen emission rate ratio.

The invention belongs to the technical field of wastewater treatment materials, and relates to an adsorbent, in particular to an adsorbent for high-concentration COD biochemical tail water treatment and a preparation method and application thereof.The preparation method comprises the following steps that S1, activated carbon is subjected to nitrogen doping treatment, and nitrogen-doped activated carbon is obtained; s2, carrying out oxidation treatment on the nitrogen-doped activated carbon to obtain oxidized-nitrogen-doped activated carbon; s3, treating the oxidized-nitrogen-doped activated carbon under oxygen-enriched and low-pressure conditions to obtain the adsorbent. The adsorbent provided by the invention not only improves the adsorption effect, but also has high oxygen carrying performance, is used for treating high-concentration COD biochemical tail water, not only can efficiently adsorb suspended particulate matters so as to avoid adverse effects on a subsequent membrane treatment device, but also can release oxygen into the tail water so as to improve the oxygen content in the tail water, so that the treatment effect of the high-concentration COD biochemical tail water is improved. The activity of microorganisms in the aerobic biochemical treatment process is enhanced, so that the treatment effect is improved.

The present application relates to a kind of low-temperature flue gas desulfurization and denitrification device and method thereof, belong to flue gas processing technical field.The device includes fixed desulfurization bed, gas mixer, fixed denitration bed, fan and diffusion tower connected in turn through flue gas pipeline, also set up flue gas analyzer to assist desulfurization and denitrification.The flue gas is first desulfurized by fixed desulfurization bed, then according to the collection data of first flue gas analyzer, adjust the amount of water vapor and ozone injection through gas mixer, to adjust humidity and oxidize nitrogen oxide;Finally, the flue gas is deeply denitrified by fixed denitration bed.The present application adopts all dry process, solves the problem of low-temperature flue gas denitrification, without spraying system and catalyst, by-product is calcium sulfate and calcium nitrate, which can be resource utilization, investment operation cost is low, no waste water and solid waste generation, high efficiency.

The invention discloses a ZnO / ZnS / ZnSO4 nano composite material and a gas sensor based on the ZnO / ZnS / ZnSO4 nano composite material, a ZnO / ZnS heterojunction composite material with rough spherical morphology is prepared by adopting a two-step method, part of ZnS in the ZnO / ZnS heterojunction composite material can be converted into ZnSO4 through subsequent controllable annealing treatment, so that a ZnO / ZnS / ZnSO4 three-layer composite material is obtained, and finally the ZnO / ZnS / ZnSO4 three-layer composite material is prepared into the gas sensor. And high-performance detection of NO2 gas is realized. The prepared sensor has the characteristics of high sensitivity, good selectivity and strong stability, has relatively high response (65) to 5 ppm NO2 at a relatively low working temperature (110 DEG C), can detect nitrogen dioxide gas with extremely low concentration, and has huge potential in the aspect of developing and detecting low-concentration nitrogen dioxide gas.

1. Name of the product in this design: Multi-parameter sensor for mining. 2. Application of this design: This design is mainly used to measure the concentration of various gases such as methane, carbon monoxide, and oxygen in coal mines and environments where gas and coal dust explosions occur. It can also detect the concentration of gases such as carbon dioxide, nitrogen dioxide, ethylene, and acetylene by replacing the detection components, and realize data communication and audible and visual alarms. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D rendering 1.

The invention relates to a method for producing nitric oxide from a gaseous reactant mixture containing oxygen and nitrogen in a reactor comprising a reaction zone (1) with a heat inlet device (2) and at least two regenerator zones (3, 4, 5, 6), each regenerator zone having a low-temperature section at one end and a high-temperature section at the other end of the regenerator zone, the high-temperature sections being fluidly connected to the reaction zone (1), the method comprising the steps of: e) supplying heat through the heat inlet device (2) to the reaction zone (1) until a temperature of 1500 °C to 2500 °C is reached in the reaction zone (1);f) passing the reactant mixture through a first regenerator zone (3) to the reaction zone (1) in which the reactant mixture reacts to form a product mixture, passing the product mixture from the reaction zone (1) through a second regenerator zone (4) and extracting at least a portion of the product mixture from the second regenerator zone (4); g) reversing the flow direction and passing the reactant mixture through the second regenerator zone (4) to the reaction zone (1) in which the reactant mixture reacts to form a product mixture, passing the product mixture from the reaction zone (1) through the first regenerator zone (3) and extracting at least a portion of the product mixture from the first regenerator zone (3); and h) reversing the flow direction and periodically repeating steps b) and c);where the high-temperature sections of the regenerator zones (3, 4, 5, 6) comprise a plurality of channels with a hydraulic diameter of 0.5 mm to 5 mm each, whose inner walls are made of oxide ceramic.;

The present invention relates to a methane removal device and an operation method thereof and, more specifically, to a methane removal device and an operation method thereof, wherein the ability to remove methane is improved by using nitrogen monoxide as a medium, and methane can be stably removed by using a non-noble metal-based catalyst. According to an embodiment of the present invention, a catalyst device necessary for satisfying the regulations for various internal combustion engines using natural gas as fuel can be provided to both revitalize the relevant industrial field and improve the problem of global warming. In addition, according to an embodiment of the present invention, it is possible to solve price problems and the like of conventional exhaust gas reduction devices, which have relied on noble metal catalysts, for removing hydrocarbons.

This application provides a flexible nitrogen dioxide gas sensor based on tungsten disulfide and its fabrication method. The sensor includes a flexible substrate, a flexible electrode, and a tungsten disulfide sensitive film. The flexible electrode is disposed on the same plane of the flexible substrate, and the source and drain adopt an arrayed interdigitated electrode structure. The tungsten disulfide sensitive film covers the channel region between the source and drain, and there is a gap between it and the gate. When a gate voltage is applied, the gate modulates the carrier concentration in the tungsten disulfide channel of the tungsten disulfide sensitive film through a lateral electric field, thereby adjusting the sensitivity to nitrogen dioxide detection. The fabrication process is simplified, and high sensitivity, fast recovery, and flexible wearable adaptation are achieved simultaneously without material modification or external assistance.

The invention discloses a production process and device for preparing liquid nitrogen tetroxide by recycling nitric oxide. Nitrogen oxides in the tail gas are respectively absorbed by water and alkali liquor to prepare a nitric acid solution and a sodium nitrate-nitrous acid solution; a dilute nitric acid solution and a sodium nitrate and nitrite solution are respectively stored and then mixed to enter a nitric oxide generation tower for reaction to generate nitric oxide gas and a sodium nitrate aqueous solution. The nitric oxide gas is lightly oxidized by using oxygen in the nitric oxide generation tower, then enters the oxidation absorption tower and is heavily oxidized by using concentrated nitric acid, so that the nitric oxide gas is completely converted into nitrogen dioxide gas, and the concentrated nitric acid is used for absorption at the upper section of the oxidation absorption tower to form fuming nitric acid. Fuming nitric acid is heated by steam, and liquid nitrogen tetroxide is produced after condensation. The non-condensable gas contains a small amount of nitrogen oxides, and then passes through a denitration device. By adopting the device and the process, the nitrogen oxide in the recovered waste gas can be effectively ensured to be prepared into liquid nitrogen tetroxide, and the content of the nitrogen oxide in the waste gas outlet is reduced.

A method for extracting copper from sulphide mineral ore, comprising the following steps: stacking the ore to form a pile (heap), a leaching step, irrigating the pile with a first irrigating solution containing an acidic nitrate solution and nitrite, thereby causing the oxidation of sulfide minerals inside the pile, oxidation of gaseous nitrogen oxide released during the oxidation of sulfide minerals inside the pile with oxygen to form nitrogen dioxide, and hydrolysis of nitrogen dioxide to form nitric acid and / or nitrous acid in the first irrigating solution inside the pile, to continue the leaching stage and reduce nitrogen oxide losses from the pile.

The application relates to the technical field of materials, and discloses a preparation method of a heat-conducting wave-absorbing material for an electromagnetic device shell, the heat-conducting wave-absorbing material is prepared by compounding methyl vinyl silicone rubber as a main raw material with heat-conducting wave-absorbing additives and other auxiliary materials through mixing and vulcanization processes, wherein the heat-conducting wave-absorbing additives are a composite of modified boron nitride and nitrogen oxide doped porous carbon, the surface of the modified boron nitride contains substituted hydroxyl groups generated by ring-opening addition reaction, can interact with the epoxidized silicone rubber, greatly improves the interfacial bonding force between the heat-conducting wave-absorbing additives and the silicone rubber matrix, is beneficial to uniform dispersion of the heat-conducting wave-absorbing additives in the silicone rubber matrix, and forms continuous and stable heat-conducting wave-absorbing channels in the silicone rubber matrix by using the excellent heat-conducting performance of the modified boron nitride and the excellent wave-absorbing performance of the nitrogen-doped porous carbon material, thereby excellent heat-conducting and electromagnetic shielding effects are generated, and the heat-conducting wave-absorbing material can be directly applied to the preparation of electromagnetic device shells.

This invention relates to a method for preparing a nitric oxide absorbent for flue gas from a coal-fired power plant and its application, comprising the following steps: preparing tridentate aldehyde through a multi-step organic synthesis reaction; preparing triangular prism cage-like molecules; preparing a nitric oxide absorbent stock solution; and formulating the nitric oxide absorbent. The beneficial effects of this invention are: employing the principle of physical adsorption, the triangular prism cage-like compound captures NO through physical adsorption, and through desorption, high-purity nitric oxide gas can be obtained and reused for NO molecule absorption. This method is safer than traditional chemical methods, effectively avoiding the environmental hazards caused by ammonia escape and the impact of byproducts such as ammonium bisulfate on the normal operation of the unit, and also features high recycling rate and long service life.

The present invention relates to a high concentration nitric oxide generating device capable of raising the air pressure and generating a large amount of plasma containing high concentration nitric oxide even in the case of blowing straight wind into a discharge chamber to lightning discharge, and under the condition of delivering straight wind to the discharge chamber in an upwardly open state, the air pressure inside the discharge chamber is relatively raised compared to the atmospheric pressure, thereby enabling continuous generation of a large amount of plasma containing high concentration nitric oxide.

The utility model relates to the field of carbon dioxide purification, and discloses a device for removing impurity gas in carbon dioxide, which comprises an impurity removal box, a carrier plate I provided with activated carbon, a carrier plate II provided with a photocatalyst, a carrier plate III provided with a polyimide film, an ultraviolet lamp and a steering assembly. The waste gas is introduced into an impurity removal box, activated carbon adsorbs all smoke dust, water molecules and part of impurity gases such as sulfur dioxide and nitrogen dioxide in the waste gas, and then a photocatalyst is irradiated by an ultraviolet lamp to promote volatile organic compounds, hydrocarbons and other impurities to be converted into carbon dioxide and water; meanwhile, impurities such as nitrogen dioxide and sulfur dioxide can be converted into nitrate, sulfate and the like, finally, the carbon dioxide is discharged out of the impurity removal box to be collected through the selection effect of the polyimide film on the carbon dioxide, and pure carbon dioxide is obtained. The device has the advantages and effects that the illumination intensity of the photocatalyst is uniform, the impurity removal efficiency is high, and the process is simple.

This invention provides an engine aftertreatment system, a control method, an engine, electronic equipment, and a vehicle. The aftertreatment system is configured with a redox-type exhaust aftertreatment system installed in the engine's main exhaust pipe. A nitric oxide selective oxidation chamber is provided in the bypass exhaust path. Exhaust gas generated by the hydrogen engine enters the nitric oxide selective oxidation chamber through the bypass exhaust path. The nitric oxide selective oxidation chamber converts nitric oxide in the exhaust gas into nitrogen dioxide and outputs the converted exhaust gas. The nitric oxide selective oxidation chamber is connected to the engine's main exhaust pipe via a reflux device. The converted exhaust gas is returned to the redox-type exhaust aftertreatment system through the reflux device and the engine's main exhaust pipe. This allows for the active creation of a suitable NO2 / NOx ratio on the aftertreatment system side without changing the engine's combustion parameters, thereby effectively improving the efficiency of the selective catalytic reduction reaction.

The invention discloses a method for removing amorphous carbon in a single-walled carbon nanotube. Comprising the following steps: heating a crude single-walled carbon nanotube containing amorphous carbon impurities in mixed gas to a temperature I for roasting I, then reducing the temperature to a temperature II for continuously roasting II, and thus obtaining the purified single-walled carbon nanotube, the temperature I ranges from 350 DEG C to 500 DEG C; the temperature II ranges from 200 DEG C to 300 DEG C; the mixed gas comprises at least two of air, carbon dioxide, nitrogen dioxide or nitrous oxide. According to the method, the specific mixed gas is adopted, the temperature is firstly heated to the temperature I for roasting I, then the temperature is reduced to the temperature II for continuously roasting II, the amorphous carbon is selectively oxidized in the oxidation process, the single-walled carbon nanotubes are not damaged, and the method is simple in process, high in amorphous carbon removal rate and capable of being used for industrial large-scale production.

The application provides a method for estimating the concentration of nitrogen trioxide in the atmosphere, which comprises the following steps: S10, measuring irradiance D1, D2, D3,..., Dn; S20, measuring nitrogen trioxide photolysis rate values K1, K2, K3,..., Kn; S30, establishing a first relationship Y1 between the D1-Dx and the corresponding nitrogen trioxide photolysis rate K1-Kx; establishing a second relationship Y2 between the Dx-Dn and the corresponding nitrogen trioxide photolysis rate Kx-Kn; S40, establishing a third relationship Y3 and a fourth relationship Y4; S50, final relationship K=(a1*D+b1*D2)+(a2*D+b2*D2); S60, obtaining the irradiance value Dm at a specific time, and bringing the Dm into the K to calculate the nitrogen trioxide concentration at the specific time. The method for estimating the concentration of nitrogen trioxide in the atmosphere provided by the application is accurate in measurement.

The invention relates to the technical field of chemical engineering, in particular to a method for preparing high-purity 1-naphthylamine with high selectivity. According to the method, the industrial naphthalene and the nitrate are taken as raw materials, the compound complexing supported catalyst is added, the 1-naphthylamine is generated with high selectivity, a strong cancerogenic substance 2-naphthylamine is not generated, and the selectivity of the 1-naphthylamine is improved to 99%; the nitration reaction condition is mild, the reaction time is short, the reaction product yield is high, no nitric oxide is generated in the traditional nitration reaction, the flammable and explosive risk is avoided, and the safety is high; the method is green and environment-friendly, has no discharge of three wastes, can recycle nitrate and a reaction solvent, greatly reduces the production cost in actual production, is reliable in process, can meet the requirements of industrial implementation, and is suitable for large-scale industrial production.

The invention provides a nitric oxide generator, and relates to the technical field of nitric oxide preparation, and the nitric oxide generator comprises a nitric oxide generation device which employs a synthesis method to directly synthesize nitrogen and oxygen mixed gas into nitric oxide through an electric arc at a target temperature; the first flow regulation and control device is used for regulating the output flow of the NO output pipe of the nitric oxide generation device; the control device is electrically connected with the nitric oxide generation device and the first flow regulation and control device. The target temperature is 4000 DEG C. A nitrogen and oxygen mixed gas input pipe of the nitric oxide generation device is provided with a flow regulation and control device II; and the flow regulation and control device II is electrically connected with the control device. The power supply device is used for supplying power to the arc generation device of the nitric oxide generation device, and the output frequency of the power supply device can be adjusted. The target temperature can be stably maintained through direct electric arc heating, it is ensured that the nitrogen oxidation reaction is efficiently and stably carried out, and the product consistency is higher.

The disclosure relates to methods of producing nitric oxide (NO) gas that is administrable without specialized equipment and does not provide nitrogen dioxide (NO2) gas. The methods comprise combining a nitrate and / or nitrite anion and an elemental metal in an acidic solution in a vessel capable of housing liquid and gas constituents, wherein NO gas is produced by the reaction of the nitrate and / or nitrite anion and the elemental metal in the acidic solution. The method further comprises administering the NO gas produced to the subject via inhalation. Also described are compositions and kits for improved delivery of NO gas.

The application provides an electric gas stove, which comprises a pot ring bottom plate, an electrode plate and a bottom plate which are sequentially stacked, a first cavity is formed between the bottom plate and the electrode plate, a plurality of first pinholes are arranged on the bottom plate, an electrode groove and a circulating air hole are arranged on the electrode plate, the bottom of the electrode groove is provided with a flow guide hole and a second pinhole which are communicated with the first cavity, a first electrode with a hollow structure is arranged on the electrode groove, the electrode plate and the bottom plate are provided with a first electrode pin which sequentially passes through the first pinhole and the second pinhole, one end of the first electrode pin is located outside the bottom plate, the other end of the first electrode pin is located inside the first electrode, a second electrode which is not in contact with the first electrode is connected to the first electrode pin, and a flow channel is formed between the first electrode and the second electrode; the pot ring is arranged on the pot ring bottom plate, and when a pot is placed, the pot ring, the pot ring bottom plate and the pot are surrounded to form a second cavity. The first cavity and the second cavity are relatively isolated from the outside, and the generation of harmful gases such as ozone and nitrogen oxide is effectively reduced during use.

The utility model relates to gas recovery technical field discloses a kind of coal mine gas extraction gas purification and recovery equipment, including high-pressure delivery pump, suction pipe, gas pipe, purification tank, mixing mechanism, drying shell, separation tank, gas storage tank, support plate and zeolite molecular sieve membrane, suction end of high-pressure delivery pump is connected with suction pipe, the gas outlet end of high-pressure delivery pump is connected with gas pipe, gas pipe is inserted to the inside bottom end of purification tank, the left side of drying shell is equipped with the first conduit connected with purification tank, the right side of drying shell is equipped with the second conduit connected with separation tank, separation tank is fixed with support plate, the front side of support plate is fixed with zeolite molecular sieve membrane, the left side of gas storage tank is equipped with the air inlet pipe connected with separation tank, second valve is installed on air inlet pipe.The utility model is convenient to gas extraction storage, and can remove mixed dust, sulfur dioxide, carbon dioxide, nitrogen dioxide and other impurities in gas, so that gas purity is higher.