40 results about "Nitrogen monooxide" patented technology

The application discloses a preparation method of a copper-tin alloy catalyst and application of the copper-tin alloy catalyst in ammonia synthesis. A three-electrode system is adopted, a certain mass of copper salt and tin salt is dissolved in water, an acid solution with a certain concentration is added and is continuously stirred, a certain current density is applied at a cathode, and finally the electrodeposited catalyst is filtered and dried to obtain a dendritic nano Cu6Sn5 alloy catalyst. The application is used for electrocatalytic reduction of nitrogen monoxide to synthesize ammonia, the NH3 Faraday efficiency reaches more than 95% in a flow phase electrolytic cell, the highest current density reaches 1 A cm ‑2 , and the ammonia production rate is about 8 mmol cm ‑2 h ‑1 ; in a membrane electrode electrolyzer, the highest current density reaches 4 A cm ‑2 , and the ammonia production rate is 24.4 mmol cm ‑2 h ‑1 .

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.

The invention discloses a method for circularly absorbing nitric oxide in flue gas of an industrial furnace through potassium manganate. The method comprises the following steps: introducing NO-containing flue gas into a mixed solution of KOH and K2MnO4 for absorption, and converting NO into nitrate by using Mn (II) complexation and K2MnO4 oxidation; filtering the absorption tail liquid to obtain MnO2, and crystallizing the filtrate to obtain sylvite; mnO2 and sylvite are fused, oxygen is introduced, K2MnO4 is regenerated, and K2MnO4 is recycled; nOx generated in the regeneration process returns to the hearth and is reduced into N2. According to the method, an absorption-oxidation-regeneration-reduction closed-loop system is formed, the technical problems of low NO mass transfer efficiency, high oxidant / complexing agent consumption, high operation cost, secondary pollution and the like in the existing denitration technology are solved, efficient removal (the efficiency is greater than 95%) and resource circulation of NOx are realized, and the method has the advantages of low cost and no secondary pollution.

The invention discloses a method for predicting the concentration of nitric oxide in coal-fired flue gas based on bimodal feature fusion. The method comprises the following steps: (1) acquiring one-dimensional photoacoustic spectroscopic data of nitric oxide in coal-fired flue gas; (2) denoising the one-dimensional photoacoustic spectroscopic data of the nitric oxide in the coal-fired flue gas, and converting the one-dimensional photoacoustic spectroscopic data of the nitric oxide in the coal-fired flue gas into a two-dimensional image; (3) performing data set division on the coal-fired flue gas nitric oxide photoacoustic spectroscopic data and the photoacoustic spectroscopic data sample which is converted into the two-dimensional image; (4) establishing a bimodal feature fused coal-fired flue gas nitric oxide concentration prediction model; and (5) checking the model effect. According to the coal-fired flue gas nitric oxide concentration prediction model based on bimodal feature fusion, the defects existing in an existing coal-fired flue gas nitric oxide concentration prediction method are overcome, the new bimodal model is provided, feature extraction can be more effective and more comprehensive, the prediction precision is improved, the calculation efficiency is optimized, and the prediction efficiency is improved. The method is very suitable for predicting the concentration of nitric oxide in coal-fired flue gas.

A method of automatically calibrating a toxic gas detector 100 wherein the same calibration gas is used to calibrate one or more gas sensors 110, 112, 114 which detect the presence of a different toxi

The invention belongs to the technical field of gaseous transmitter donor functional materials, and particularly relates to a photoresponse nitric oxide donor functional material as well as a preparation method and application thereof. The raw material of the light response nitric oxide donor material comprises nitric oxide donor molecules, and the nitric oxide donor has a structure as shown in a formula (I): # imgabs0 # formula (I); wherein m and n are selected from any integer between 1 and 3. The photo-responsive nitric oxide donor functional material can stably exist in a water-based environment and also has visible light responsiveness. Under the irradiation of 410 nm light, the nitrogen monoxide release characteristic is still achieved, and the obvious sterilization effect on staphylococcus aureus (S.aureus) and escherichia coli (E.coli) is achieved.

A semiconductor device and a manufacturing method thereof, the method comprising: providing a substrate, depositing an aluminum film on the substrate; performing nitrogen monoxide plasma treatment on a surface of the aluminum film to form an aluminum oxide protective layer on the surface of the aluminum film; and performing a patterning process on the aluminum film after forming the aluminum oxide protective layer. By performing N2O plasma treatment on the surface of the aluminum film after deposition and before photolithography development, an aluminum oxide protective layer is formed on the surface of the aluminum film, thereby avoiding metal residue caused by residual developer.

The invention relates to a process for the chemical modification of molecules of a gaseous or liquid composition followed by their total destruction either by natural aerobic biodegradation or by an advanced oxidation process (AOP). The invention relates to a process for the purification of a gaseous or liquid composition and then its total destruction by an advanced oxidation process consisting of: a volatile inorganic compound selected from carbon dioxide, nitric oxide, nitrogen dioxide, hydrohalic acids, carboxylic acids, thionyl chloride, sulfuryl chloride, ammonia, halogens, hydrogen sulfide, carbon oxysulfide, carbon monoxide, nitrogen oxide and sulfur dioxide, and / or a functional volatile organic compound: amine, amide, nitrile, aldehyde, ketone, ester, carboxylic acid, alcohol, thiol, disulfide, thioester, halogenated organic compounds, phosgene, Hydrogen cyanide and cyanides.less one volatile inorganic compound selected from carbon dioxide, nitrogen monoxide, nitrogen dioxide, hydrohalic acids, thionyl chloride, sulfuryl chloride, ammonia, halogens, hydrogen sulfide, carbon oxysulfide and sulfur dioxide.

A method for simultaneously removing nitric oxide and sulfur dioxide, belonging to the field of air pollution control technology, is characterized by introducing the gas stream to be treated into a reactor, simultaneously introducing an absorbent into the reactor. Sulfur dioxide in the gas stream undergoes a redox reaction with ferric chloride in the absorbent, causing the sulfur dioxide to be oxidized to sulfate ions, which are then absorbed by the absorbent. Nitric oxide gas in the gas stream reacts chemically with solid ferric chloride crystals in the ferric chloride slurry of the absorbent and is absorbed. The absorbent, after saturation, is regenerated and recycled. This method can also remove harmful gases such as carbon disulfide, carbon oxysulfide, and hydrogen sulfide from the gas stream separately.

The utility model relates to tail gas treatment equipment technical field discloses a nitrogen monoxide production tail gas treatment device, including spray tower and absorption tower, absorption tower is located one side of spray tower, one side below of spray tower is connected with the air inlet pipe, the inside assembly of spray tower has and links to each other the circulating assembly of spray assembly, circulating pump will collect liquid tank absorption liquid delivery to the storage ring, atomizes and sprays through annular spray head, the gas to be treated enters from the air inlet pipe, forms the cyclone through the cyclone vane in the flow guide box, makes the gas -liquid contact time extension, turbulent mixing enhances the mass transfer efficiency, makes the pollutant and absorption liquid fully contact and is absorbed efficiently, absorption liquid falls back to the collection liquid tank and is recycled, when spray tower runs, the absorption liquid after spraying is initially filtered through the dust sieve hole of flow guide box bottom surface, then is refined and filtered through the impurity filter board, after flowing into the collection liquid tank, is cooled by the condensing coil, finally is pumped back for use through the circulating pump, realizes absorption liquid recycling.

The utility model belongs to the technical field of medical apparatus and instruments, disclose a kind of cryoablation system, including gas source, heat exchange capillary and evaporator, wherein, gas source medium is the nitrogen monoxide containing moisture, cryoablation system includes drying filter;The drying filter has air inlet and air outlet, the air inlet is connected with the gas source, and the air outlet is connected with the heat exchange capillary;The heat exchange capillary exchanges heat with the evaporator;The drying filter is filled with drying material that can absorb water molecules in gas source medium and is suitable for nitrogen monoxide molecule free passage, to remove the moisture in gas source medium that passes through drying filter.The utility model is by additionally providing drying filter, effectively reduce the risk that pipeline occurs blockage, improve balloon temperature and air inlet pressure curve smooth, be conducive to the judgment of operator, ensure the stability of operation.

The present invention relates to a catalyst for treating an exhaust gas stream containing one or more of formaldehyde, nitric oxide (NO) and hydrocarbons, the catalyst comprising: a first washcoat layer comprising Mn supported on a CuO-Al2O3 mixed oxide; and a substrate wherein the substrate has an inlet end and an outlet end wherein the catalyst further comprises one or more platinum group metals comprising Pt, Pd, or Pt and Pd wherein the one or more platinum group metals are at least partially comprised in one or more of (a) the first washcoat layer, and (b) optionally a second washcoat layer, or (c) optionally a second washcoat layer and a third washcoat layer. Furthermore, the present invention relates to an exhaust gas treatment system comprising the catalyst, a method for treating an exhaust gas stream containing one or more of formaldehyde, nitric oxide (NO) and hydrocarbons using the catalyst, and to the use of the catalyst for oxidizing one or more of formaldehyde, nitric oxide (NO) and hydrocarbons.

The corona-effect reactor includes: a reaction chamber including an air supply port, an exhaust port, an electrode port, and a reaction cavity, the supply port, the exhaust port, and the electrode port each emerging into the reaction cavity; an air supply device configured to be fluidly connected to the air supply port by means of a guide duct and to supply air to the reactor; a high voltage electrode configured to be at least partly inside and to cooperate with the electrode port; a power supply configured to supply power to the high voltage electrode as well as the air supply device. A ratio between a cross section of the guide duct and a cross section of the reaction cavity being between ⅕ and 3 / 10, and for example ¼.

The present invention comprises: a thermal decomposition unit (2) for thermally decomposing a nitrogen component in a sample so as to generate a sample gas that contains nitrogen monoxide; a reaction unit (4) which includes a reaction space (12) for reacting the nitrogen monoxide in the sample gas generated by the thermal decomposition unit (2) with an ozone gas so as to generate light, a sample gas introduction flow path (14) for introducing the sample gas into the reaction space (12), an ozone gas introduction flow path (16) for introducing the ozone gas into the reaction space (12), and window (18) for transmitting and guiding the light generated in the reaction space (12) to the outside; and an optical sensor (8) for detecting the light transmitted through the window (18). The ozone gas introduction flow path (16) of the reaction unit (4) is provided so as to form a flow of the ozone gas along the window (18) in a vicinity region (A) of the window (18) by introducing the ozone gas toward the vicinity region (A).

In a process for producing nitric acid, nitrogen oxides are first generated in an ammonia combustion plant (2) by burning ammonia with primary air and cooled in a condenser (3), forming a solution containing nitric acid. The nitric acid-containing solution is then fed to at least one absorption tower (4, 5) in which the nitrogen oxides are brought into contact with water and oxygen. The nitrogen-containing gas mixture reacts at least partially with the water and oxygen to form an aqueous solution containing nitric acid, which collects at the bottom of the absorption tower (4, 5) and is subsequently condensed and returned to the absorption tower (4, 5) via a line (13, 15, 21). To minimize the formation of nitrous oxide during ammonia oxidation in such a plant and to increase the efficiency of the process, the invention proposes using a gas with an oxygen content between 21.3 vol.% and 35 vol.% as an oxidant in the ammonia combustion plant (2). According to the invention, this oxidant is produced by introducing pure oxygen or an oxygen-rich gas into the primary air or into the ammonia combustion plant (2).

The invention discloses a PtCu cluster hypoxic radiotherapy sensitizer capable of controllably releasing nitric oxide, and belongs to the crossing field of nanomaterial chemistry and biochemistry. According to the invention, 4-nitro-1-(propargyl)-1H-imidazole with good biocompatibility is used as a protective ligand, and the nanocluster with accurate atomic size is synthesized by a room temperature volatilization one-pot method. The chemical formula of the nanocluster is [Pt4Cu8 (C6H4N3O2) 8 (C26H24P2) 4Cl4] (PtCl6) (PF6) 2 (abbreviated as Pt4Cu8), the nanocluster belongs to a monoclinic system, and the space group is P21 / n. The nano-alloy cluster has a small size (-2 nm) and good dispersibility, the material can controllably release nitric oxide under excitation of X rays, and the sensitization effect of radiotherapy is remarkably enhanced by improving a tumor hypoxic microenvironment, so that tumor cells are efficiently killed.

Title of the Invention: Pulsed-Mode Nitric Oxide Gas Delivery Apparatus. The invention relates to a NO delivery apparatus (1) comprising a main gas circuit (40; 40.1, 40.2) with flow control means (42, 43) including at least one main solenoid valve (42), and a bypass circuit (41) connecting (140, 141) to the main gas circuit (40; 40.1, 40.2) by bypassing the flow control means (42, 43). Secondary flow control means (45, 46) including at least one on / off secondary solenoid valve (45) are arranged on the bypass circuit (41). A fixed-flow device (46) is arranged on the bypass circuit (41). Control means (50) control the secondary solenoid valve (45) in pulsed mode to alternately switch it between open and closed positions so as to produce a NO / N2 mixture in the form of successive gaseous pulses having a pulse time (di) of non-zero duration.Installation for supplying NO (10) to a patient including the device (1). Figure of the abstract: Figure 2.

Title of the Invention: Display of a Maintenance Reminder on a Medical Nitric Monoxide Supply Device. The invention relates to a device (1) for supplying a gas containing NO, comprising at least one internal passage (6) for conveying a flow of NO-containing gas, comprising valve means (7), microprocessor-controlled control means (8) (9), a touchscreen graphic display (4), and a gas analysis line (111) comprising at least one sensor (112). The control means (8) are configured to command, at a given time frequency, a temporary display on the graphic display (4) of a first virtual selection button (81), the activation of which by a user initiates a calibration procedure for the sensor(s) (112) of the gas analysis line (111). Abstract Figure: Figure 3

Title of the Invention: Reverse Connection Alert for the Flow Sensor of a Nitric Monoxide Delivery System. The invention relates to a gas delivery system (100) for supplying a gas containing NO to a patient, comprising an NO delivery device (1) including at least one internal passage (6) for conveying the gas flow, microprocessor-controlled control means (8) (9), and a graphic display (4); a patient circuit (20) to which the NO delivery device (1) is fluidly connected; and a flow measurement device (25) fluidly connected to the patient circuit (2). The control means (8) are configured to process the flow measurements to display a visual alarm on the graphic display (4) in the event of a reverse connection of the flow measurement device (25). Abstract Figure: Figure 4

An apparatus for producing ammonia using electric discharge of water according to an embodiment of the present invention includes a plasma decomposition reaction part configured to produce hydrogen (H2) and oxygen (O2) from water by supplying the water to plasma generated by using nitrogen gas (N2) as electric discharge gas and produce nitrogen monoxide (NO) and nitrogen dioxide (NO2) by allowing oxygen (O2) to react with nitrogen (N2), a thermal decomposition reaction part connected to a lower side of the plasma decomposition reaction part and configured to produce solid carbon and hydrogen (H2) by decomposing water and hydrocarbon by further supplying hydrocarbon or hydrogen to an additional supply port, and a synthetic catalyst part connected to the thermal decomposition reaction part and configured to produce ammonia (NH3) by synthesizing hydrogen (H2) and nitrogen monoxide (NO) separated from water.

The present invention provides a method for producing nitrogen monoxide and monoxide produced thereby, the method comprising the steps of: 1) removing high-boiling-point materials existing in a liquid phase by distilling a mixed gas generated in a process of producing nitric acid by reacting ammonia and oxygen in a high-boiling-point distillation column under pressure and temperature conditions in which NO2 can be vaporized; 2) removing gaseous low-boiling-point materials in a gaseous phase by distilling the mixed gas from which the high-boiling-point materials in a liquid phase are removed in a low-boiling-point material distillation column under pressure and temperature conditions in which NO2 is not vaporized; 3) obtaining NO2 in a liquid phase by supplying liquid containing NO2 to an adsorption tower filled with an adsorbent to separate impurities including acid and moisture; 4) reacting NO2 in a liquid phase with H2O; and 5) recovering NO gas generated by the reaction.

The present invention relates to a compound in which a nitric oxide scavenger is conjugated to a low-molecular-weight compound having pharmaceutical activity, and a nitric oxide-sensitive pharmaceutical composition comprising same. The compound is designed such that a nitrogen monoxide scavenger is separated while removing nitrogen monoxide only in a diseased region such as an inflammatory region having a high concentration of nitrogen monoxide, with the concomitant impartment of pharmaceutical activity to the low-molecular-weight compound in an inactivated state. The compound is activated only at the disease site, thereby minimizing side effects of existing medicines and simultaneously securing the pharmaceutical activity effect of the low molecular weight compound and the effect of removing nitrogen monoxide, and thus can be used for preventing or treating diseases accompanied by nitrogen monoxide generation.

The invention discloses a high-sensitivity detection system and method for measuring nitrogen oxide in atmosphere, and relates to the technical field of atmosphere detection. The system comprises a laser generation module, a sampling and gas processing module and a fluorescence detection and data processing module, the laser generation module generates ultraviolet laser for exciting nitric oxide fluorescence, after to-be-detected atmosphere or sample gas provided by a standard gas cylinder is subjected to flow proportioning and control, a first path of gas enters the NO detection cavity, a second path of gas enters the NOx detection cavity after being subjected to photolysis conversion through the LED photolysis converter, the ultraviolet laser sequentially penetrates through the NOx detection cavity and the NO detection cavity, and the NOx detection cavity and the NO detection cavity are communicated with the NOx detection cavity. A fluorescence collection system is arranged in each detection cavity, the laser energy meter monitors the energy of laser penetrating through the two detection cavities in real time, and online monitoring of the concentration of NO and NO2 is achieved according to the fluorescence signal intensity and the laser energy. The system has the characteristics of compact structure, high optical path stability and high detection precision.

A desorption method of a nitrogen oxide adsorbent belongs to the technical field of air pollution control and environmental protection, and is characterized by comprising two processes of desorption of the adsorbent and treatment of mixed gas after desorption, wherein in the desorption process, at least one of water vapor, ammonia gas or carbon dioxide gas is adopted as desorption regeneration gas to desorb and regenerate the adsorbent after adsorption saturation, and the desorbed mixed gas flow passes through a desorbed mixed gas treatment system to remove moisture, ammonia gas or carbon dioxide and gas contained in the gas flow; the high-concentration nitric oxide gas is obtained, and the regeneration of the adsorbent and the recovery of the nitric oxide gas are realized.

The present invention generally relates to systems and methods for administering therapeutic gas to patients in need thereof by receiving breathing gas from a high-frequency ventilator by at least measuring the flow of an enhanced therapeutic gas (e.g., nitric oxide, NO, etc.). At least some of these enhanced therapeutic gas flow measurements can be used to address an unexpected event that may sometimes occur when a sidestream therapeutic gas flow is mixed with breathing gas received by a patient from a breathing circuit associated with a high-frequency ventilator.By using at least some of these enhanced therapeutic gas flow measurements, the dose of side-flow therapeutic gas mixed into the breathing gas received by the patient may be at least more accurate and / or under-delivery of therapeutic gas in the breathing gas may be avoided and / or reduced.

Provided are: a catalyst containing a carrier including SiO2 and Al2O3 and an iron element carried on the carrier, having a total amount of desorbed pyridine of 100 µmol or more with respect to 1 g catalyst within the range of 150°C inclusive to 450°C exclusive in the TPD spectrum, and configured to promote the decomposition reaction of nitrogen monoxide and nitric monoxide; and a method of reducing nitrogen monoxide and nitric monoxide in a gas containing water and / or a sulfur oxide, nitrogen monoxide, and nitric monoxide, the method comprising bringing a gas and a reductant into contact with the catalyst to decompose nitrogen monoxide and nitric monoxide, the gas containing water and / or a sulfur oxide, nitrogen monoxide, and nitric monoxide.

To provide a transdermal formulation for delivering nitrogen monoxide booster or nitrogen monoxide precursor to a subject, a delivery system, a method for increasing a systemic nitrogen monoxide level, and a method for treating diseases or conditions in a subject.SOLUTION: A transdermal formulation for enhancing systemic nitrogen monoxide contains (a) an effective amount of nitrogen monoxide booster and / or nitrogen monoxide precursor, (b) a sufficient amount of polyol solvent for dissolving an effective amount of nitrogen monoxide booster and / or nitrogen monoxide precursor, and optionally (c) fatty acid, and when the formulation is administered, nitrogen monoxide released from an effective amount of nitrogen monoxide booster and / or nitrogen monoxide releasing agent is transdermally delivered.SELECTED DRAWING: None

The present invention discloses a cleaning method for a semiconductor coating process chamber, the cleaning method comprising the following steps: (1) introducing argon into the process chamber, and turning on a radio frequency power source to apply radio frequency energy into the process chamber to excite the argon into plasma; (2) introducing a reaction gas into the process chamber while continuously applying radio frequency energy to react with the byproducts remaining from the coating in the chamber; the reaction gas comprises octafluorocyclobutane, nitrous oxide and nitrogen; (3) after the reaction is completed, introducing nitrogen into the process chamber to remove the dirt remaining in the chamber. The present invention first introduces argon into the process chamber to ignite plasma, pre-forms a plasma environment for the reaction gas to promote the reaction between the reaction gas and the byproducts, and simultaneously introduces nitrogen into the reaction gas to quickly and evenly disperse the reaction gas in the chamber, thereby effectively shortening the cleaning time, reducing the loss of special gases, and effectively reducing the cost of tail gas recovery.

A method of reducing nitrogen monoxide and / or nitrogen dioxide emissions produced when a diesel engine combusts a diesel fuel composition, the method comprising metering at least one nitrogen-containing cleaning agent as an additive to the diesel fuel composition.