19 results about "Nitrous oxide gas" patented technology

The application relates to the technical field of soil gas collection, and particularly discloses an in-situ soil profile gas collection device which comprises an inner pipe, a pipe body and a strip-shaped belt. The pipe body comprises an exposed end and an inserted end, the inner pipe is located in the inner cavity of the pipe body, one end of the inner pipe is detachably connected with the inner wall of the pipe body close to the inserted end, the inner wall of the inner pipe is connected with one end of a supporting rod, the outer circumferential side of the strip-shaped belt is equidistantly provided with not less than three elastic rings, the inner diameter of the strip-shaped belt is larger than the outer diameter of the inner pipe, the strip-shaped belt is sleeved on the inner pipe, each elastic ring is clamped on the outer circumferential side of the inner pipe, and the pipe body is provided with a pulling assembly for driving one end of the strip-shaped belt to move. The technical scheme of the example of the application realizes in-situ collection of soil profile nitrous oxide gas, is suitable for long-time measurement of nitrous oxide, and has smaller interference with the surface microclimate.

A gas decomposition catalyst, a method for decomposing nitrous oxide gas by using the gas decomposition catalyst, and a cleaner system for decomposing nitrous oxide gas by using the gas decomposition catalyst. The gas decomposition catalyst includes a perovskite oxide host material containing a B'element and represented by Formula 1, and at least one B 'element protruding particle derived from some or all of the B' element, wherein the B'element protruding particles have a shape in which a portion of the particles is fixed inside the perovskite oxide host material and another portion of the particles protrudes from a surface of the perovskite oxide host material, where A, B, B ', x, and y in Formula 1 are as described in the detailed description. .

The invention belongs to the technical field of nitrous oxide preparation equipment, and particularly relates to an efficient heat exchange device for nitrous oxide preparation and a method thereof.The efficient heat exchange device comprises a snakelike bent pipe arranged on a fin heat exchanger body, a discharging end is arranged at one end of the snakelike bent pipe, and the other end of the snakelike bent pipe is fixedly communicated with a first Y-shaped pipe; the two ends of the first Y-shaped pipe are fixedly communicated with second Y-shaped pipes through straight pipes. According to the invention, through the innovative locking trigger sealing assembly, after the filter screen cylinder is oppositely inserted into the packaging cylinder, the pre-positioned filter screen cylinder can be further locked, and further sealing between the sealing plug and the inlet at the bottom end of the packaging cylinder is synchronously realized at the locked rear section, so that the air tightness of the system is ensured, and the leakage of nitrous oxide gas is prevented; the pre-positioning ensures that the filter screen cylinder is not easy to fall off in the process of being fed into the packaging cylinder, and meanwhile, the filter screen cylinder is further locked after being fed into the packaging cylinder.

The present invention aims to provide a low-cost NDIR greenhouse gas monitoring device that combines a rotary multi-gas cell system and an NDIR sensor system for measuring nitrous oxide (N2O) gas at multiple locations in a short time. [Solution] The NDIR greenhouse gas monitoring device is characterized by comprising a rotary multiple gas cell system having two or more gas cells, gas cell holders that fix both ends of each gas cell, a central axis that serves as the axis of rotation of the gas cell holder, and a motor connected to the central axis that rotates the gas cell holder by rotating the central axis, and an NDIR sensor system having an NDIR light source unit, an NDIR detector unit, and a controller that controls the output of the motor that rotates the central axis in the rotary multiple gas cell system.

The utility model discloses a trace methane and nitrous oxide isotope component separation, conversion and enrichment device, and belongs to the technical field of isotope analysis and test. Comprising a methane sample tube, a nitrous oxide sample tube, a helium bottle, a first Nafion trap, a VOC adsorption trap, a combustion tube, a four-way valve, an eight-way valve, a carbon dioxide removal assembly, a first enrichment cold trap, a second enrichment cold trap and a chromatographic column, the helium tank is communicated with the gas inlet ends of the methane sample tube and the nitrous oxide sample tube, the gas outlet end of the methane sample tube is communicated with the first Nafion trap and the VOC adsorption trap, the VOC adsorption trap is communicated with the carbon dioxide removal assembly through a four-way valve, the carbon dioxide removal assembly is communicated with a combustion tube, the combustion tube is communicated with the first enrichment cold trap through an eight-way valve, and the combustion tube is communicated with the second enrichment cold trap through an eight-way valve. The first enrichment cold trap is communicated with a second enrichment cold trap through an eight-way valve, and the second enrichment cold trap is communicated with the chromatographic column. According to the utility model, methane or nitrous oxide gas in the air can be separated, converted and enriched, so that methane or nitrous oxide in the air can be measured by instruments such as a mass spectrometer and the like.

Provided are a display apparatus, which may be easily separated from a carrier substrate, and a method of manufacturing the same. The method of manufacturing a display apparatus includes: forming, on a carrier substrate, a first inorganic layer including silicon oxide; plasma-treating the first inorganic layer by using nitrous oxide gas; after the plasma-treating, forming a display substrate on the first inorganic layer; forming a display element layer above the display substrate; and separating the display substrate from the carrier substrate.

The application provides a water resource recycling device and method. The water resource recycling device comprises a heat preservation water tank, an evaporation water tank and a nitrous oxide gas inlet pipe. Hot water (sewage) stored in the heat preservation water tank is sprayed into the evaporation water tank through an atomizing nozzle, and nitrous oxide is introduced into the evaporation water tank at the same time. Nitrous oxide is injected into water, and the high water solubility and heat effect of nitrous oxide accelerate the evaporation of water. The evaporated water is condensed to obtain pure water, so that the recycling and utilization of sewage can be realized. The water is sprayed by the atomizing nozzle and contacted with nitrous oxide, so that the gas-liquid contact area is greatly increased and the evaporation efficiency is improved. The application uses a solar heater to heat the sewage to be recycled, which not only reduces energy consumption, but also achieves the goal of green environmental protection. The application further comprises a cyclone separator. The cyclone separator effectively separates water vapor and nitrous oxide, so that the water recycling efficiency and purity are ensured.

A gas decomposition catalyst, a method of decomposing nitrous oxide gas by using the gas decomposition catalyst, and a scrubber system for decomposing nitrous oxide gas by using the gas decomposition catalyst. The gas decomposition catalyst includes a perovskite oxide host material containing a B′ element and represented by Formula 1, and at least one B′ element protruding particle derived from some or all of the B′ element, where the B′ element protruding particle has a shape in which a portion of the particle is fixed inside the perovskite oxide host material and another portion of the particle protrudes from the surface of the perovskite oxide host material:where A, B, B′, x and y in Formula 1 are as described in the detailed description.

The utility model relates to the technical field of nitrous oxide purification devices, in particular to a medical nitrous oxide purification device which comprises a purification tank with a supporting column at the lower end, a sealing cover detachably mounted at the upper end of the purification tank, an inner container fixedly mounted in the purification tank and used for containing purification liquid, and air outlet holes symmetrically formed in one end of the inner container. A mounting frame is rotatably mounted on the outer side of the inner container, annular purification plates are mounted on the outer side of the mounting frame in a linear array mode, mounting grooves are formed in the inner wall of the purification tank in a linear array mode, cleaning assemblies are mounted in the mounting grooves, an air inlet pipe is fixedly mounted at the lower end of the purification tank, and an air outlet pipe is fixedly mounted on the outer side of the purification tank; nitrous oxide gas is automatically purified through the purification liquid and the annular purification plate, the purification effect is good, impurities attached to sieve pores of the annular purification plate can be automatically sucked, and the sieve pores are prevented from being blocked after long-time use, and the purification effect is prevented from being reduced.

The utility model belongs to the technical field of culture device, especially the nitrous oxide gas collection device with luer quick -connect acetylene quantitative and high seal culture structure, the utility model discloses an acetylene supply module, soil culture module and gas collection module, the acetylene supply module includes the acetylene -filled steel bottle, is connected with the micro pressure reducing valve on the steel bottle, and the micro pressure reducing valve is connected with the luer internal thread joint through the pipeline, and the luer internal thread joint is detachably connected with the syringe, the soil culture module includes the culture cavity, and the culture cavity is equipped with the soil, and is connected with the double -way stop valve on the culture cavity, and the double -way stop valve is connected with silica gel gas injection pipe, and the silica gel gas injection pipe is inserted into the culture cavity, and the other end of double -way stop valve is connected with the luer external thread joint for detachably connecting the syringe, the utility model provides a nitrous oxide gas collection device with luer quick -connect acetylene quantitative and high seal culture structure.

Gas decomposition catalysts and methods and purifier systems for decomposing nitrous oxide (N₂O) gas using them. The gas decomposition catalyst comprises: a perovskite-based oxide host material represented by Formula 1, wherein distinct B' and B'' elements are each doped into B sites; and one or more B' element protrusions originating from a portion or all of the B' element on the surface of the perovskite-based oxide host material, wherein the one or more B' element protrusions have a shape in which a portion of one particle is fixed within the perovskite-based oxide host material and another portion of the particle protrudes from the surface of the perovskite-based oxide host material. In Formula 1, A, B, B', B'', x, y, and z are as described herein.

The utility model discloses a nitrous oxide gas multi-section type condensing device which comprises a first condensing tank, a gas inlet pipe is fixedly connected to the top of the first condensing tank, a supporting assembly is fixedly connected to the side wall of the first condensing tank, and a second condensing pipe tank is fixedly connected to the inner side wall of the supporting assembly. Spiral heat exchangers are installed in the middle of the first condensation tank and the middle of the second condensation pipe tank, a circulating water assembly is fixedly connected to the side wall of the first condensation tank, and nitrous oxide gas entering the first condensation tank and the second condensation pipe tank can be subjected to segmented condensation treatment through the arrangement of the circulating water assembly and the spiral heat exchangers. Condensed gas is discharged through the gas inlet pipe, liquid is discharged through the liquid discharging pipe, the discharged liquid can be collected through the arrangement of the liquid collecting assembly, the first condensation tank and the second condensation tank can be stably supported through the arrangement of the supporting assembly, and the segmented condensation effect of the nitrous oxide gas multi-segment condensation device is enhanced.

Provided herein are methods for maintaining a deposition chamber by plasma heating. The plasma heating can involve heating the showerhead and the deposition chamber, in some cases, using plasma generated from the nitrous oxide gas. The plasma heating is performed between the deposition(s) while the deposition chamber is idle and does not contain a substrate.

The invention relates to an industrial and agricultural nitrogen cycle process optimization method, which comprises the following steps: carrying out catalytic decomposition on a nitrogen and nitrous oxide gas mixture generated by microbial denitrification, and carrying out pressure swing adsorption to obtain high-purity nitrogen; biomass is gasified and reformed to prepare synthesis gas, the synthesis gas is fed into a conversion furnace for water-gas conversion, and carbon dioxide and hydrogen in the conversion gas are separated through pressure swing adsorption to serve as a carbon source and a hydrogen source for synthesizing urea; introducing the nitrogen gas and the hydrogen gas into an ammonia synthesis device according to a hydrogen-nitrogen ratio of 2.2-2.8, and reacting under the action of a catalyst to generate ammonia gas; the NH3 and the carbon dioxide are introduced into a urea synthesis device, a urea product is obtained after separation and purification, the obtained urea product is returned for agricultural production, and an agricultural-industrial-agricultural nitrogen element circulation system is constructed; the operating voltage, current density and water consumption of the proton exchange membrane electrolysis cell are adjusted to maximize the energy utilization rate and minimize the cost and carbon emission.

A gas decomposition catalyst and a method and scrubber system for decomposing nitrous oxide gas by using the gas decomposition catalyst. The gas decomposition catalyst includes a perovskite-based oxide host material represented by Formula 1, in which a B′ element and a B″ element which are different from each other are each doped into a B site, and one or more B′ element protrusion particles derived from a portion or all of the B′ element on a surface of the perovskite-based oxide host material, where the one or more B′ element protrusion particles have a shape in which a portion of one particle is fixed inside the perovskite-based oxide host material and another portion of the one particle protrudes from the surface of the perovskite-based oxide host material:In Formula 1, A, B, B′, B″, x, y, and z are as described herein.

The utility model discloses a kind of early warning systems of monitoring depth denitrification equipment N2O generation, including denitrification tower, the middle part of the denitrification tower is fixedly connected with clamping block, the side wall of the clamping block is equipped with siren, cooling cavity is established in the middle part of the inside of the clamping block, the inside of the cooling cavity is provided with cylinder, the side wall of the cylinder is penetrated with first air inlet pipe, the other side wall of the cylinder is penetrated with second air inlet pipe, the top of the inside of the cylinder is equipped with negative pressure fan, the bottom of the inside of the cylinder is equipped with nitrous oxide sensor, the bottom end of the cylinder is penetrated with air outlet pipe. The utility model is provided with a series of structures, thereby reducing the high temperature impact received in early warning system, reduce the probability of early warning system damage due to high temperature impact, to reduce the influence caused to early warning system service life, to realize the pre-removal of detected nitrous oxide gas, improve subsequent nitrous oxide removal effect.

Provided are: a nitrous oxide decomposition method comprising a nitrous oxide decomposition step for bringing a specific catalyst into contact with a nitrous oxide-containing gas containing nitrous oxide, nitrogen monoxide, and nitrogen dioxide, the total content of nitrogen monoxide and nitrogen dioxide in the nitrous oxide-containing gas being 0.0001-0.35 mol%; a nitrous oxide decomposition method and decomposition system, the nitrous oxide decomposition method being applied to a nitric acid production plant and involving executing a nitrous oxide decomposition step for bringing a specific catalyst into contact with a nitrous oxide-containing gas discharged from a nitric acid synthesis step; and a nitric acid production method and plant in which said nitrous oxide decomposition method and decomposition system are used.

The invention relates to the technical field of soil gas collection, and particularly discloses an in-situ soil profile gas collection device which comprises an inner pipe, a pipe body and a strip-shaped belt, the pipe body comprises an exposed end and an insertion end, the inner pipe is located in an inner cavity of the pipe body, and one end of the inner pipe is detachably connected with the position, close to the insertion end, of the inner wall of the pipe body; the inner wall of the inner pipe is connected with one end of the supporting rod, no less than three elastic rings are installed on the peripheral side of the strip-shaped belt at equal intervals, the inner diameter of the strip-shaped belt is larger than the outer diameter of the inner pipe, the strip-shaped belt is arranged on the inner pipe in a sleeving mode, each elastic ring is hooped on the peripheral side of the inner pipe in a sleeving mode, and the elastic rings are connected with the supporting rod. According to the technical scheme, in-situ collection of nitrous oxide gas of the soil profile is achieved, the device is suitable for measuring nitrous oxide for a long time, and interference to microclimate of the earth surface is small.

The high-purity nitrous oxide preparation device comprises a reaction kettle body, two groups of first supporting legs are fixedly connected to the bottom of the reaction kettle body, and two rollers are fixedly connected to the middle, close to a fixing plate, of the reaction kettle body; through the structural design that a plurality of ejector pins are mounted in the middle of the second filter plate and are matched with the first filter plate for use, solid particles in the middle of the first filter plate are cleaned in time, so that a reaction mixture is continuously and efficiently filtered through the filter plates; according to the nitrous oxide preparation device, abnormal pressure change in the reaction kettle body and fluctuation of reactant flow caused by blockage of the first filtering plate are avoided, stable operation of the whole nitrous oxide preparation device is facilitated due to stable filtering efficiency, the production efficiency is improved, solid particle impurities in a reaction mixture can be more effectively removed due to a good filtering effect, and the product quality is improved. And the purity of the nitrous oxide gas entering the subsequent treatment process is higher.