224results about "Nitric oxide" patented technology

The invention discloses a process for synthesizing ammonia by coupling low-temperature plasma with electro-catalysis in the field of clean energy and green chemical industry, which comprises the following specific steps: mixing air and water vapor, feeding the mixture into a dielectric barrier discharge reactor, filling the reactor with a multi-stage heterojunction gradient doped carbon coated catalyst, generating active gas containing NOx under pulse high voltage, and condensing and then entering an electrocatalytic reduction unit. And an electro-catalysis product enters a photo-thermal separation module integrated with a Janus type photo-thermal electrode, the temperature of the electrode is locally increased under visible light irradiation, NH3 desorption is promoted, and finally high-purity ammonia is obtained through polyimide membrane separation. The multistage heterojunction gradient-doped carbon-coated catalyst adopted in the process is prepared through multiple steps and contains gradient-doped boron, sulfur and Au nanoparticles on the surface, NOx adsorption, electron transport and sintering resistance are synergistically improved, and efficient ammonia synthesis under mild conditions is achieved.

The utility model relates to a purification device for nitric oxide gas. The purification device comprises an extraction tower, a desorption tower, an alkaline washing tower, a condenser, an ethanol absorption tower and an adsorption tower which are communicated in sequence, a feed port of the extraction tower is communicated with a crude product gas source pipeline, a discharge port of the extraction tower is communicated with a feed port pipeline of the desorption tower, a discharge port of the desorption tower is communicated with a feed port pipeline of the alkaline washing tower, a discharge port of the alkaline washing tower is communicated with a feed port pipeline of the condenser, and a discharge port of the condenser is communicated with a feed port pipeline of the ethanol absorption tower. A discharge port of the ethanol absorption tower is communicated with a feed port of the adsorption tower through a pipeline, and a discharge port of the adsorption tower is communicated with a product collection bottle through a pipeline. Through the extraction tower, the desorption tower, the alkaline washing tower, the condenser, the ethanol absorption tower and the adsorption tower which are arranged in sequence, the device can efficiently purify nitric oxide gas, and each treatment unit can remove specific impurities, so that the finally obtained nitric oxide gas is ensured to have high purity.

Devices and associated methods for storing and dispensing a chemical solution or mixture are disclosed and described. In one embodiment, such a device can comprise a liquid container including a first chamber operable to retain a first liquid and a second chamber operable to retain a second liquid. In one embodiment, the spray device can comprise a first pump partially within the first chamber operable to aspirate and retain the first liquid, and a second pump partially within the second chamber operable to aspirate and retain the second liquid. In another embodiment, the spray device can comprise a plurality of mixing spaces fluidly coupled to the first pump and the second pump and operable to allow mixing of the first liquid and the second liquid. In another aspect, the spray device can comprise a nozzle fluidly coupled to the plurality of mixing spaces.

The invention relates to a gas supply method and device based on nitric oxide controllable pulse ionization generation and a nitric oxide therapeutic apparatus, and the method comprises the steps: carrying out the feature extraction of different dimensions of a to-be-ionized gas, and obtaining the basic features of an ionization environment and the component features of an ionization medium; generating a pulse ionization control sequence according to the basic characteristics of the ionization environment, the component characteristics of the ionization medium and the historical pulse ionization control sequence sample; the pulse ionization control sequence is sent to the ionization generation device to execute pulse ionization operation, a nitric oxide gas product is generated, and gas supply operation is executed according to the generated nitric oxide gas product; monitoring a real-time ionization process state of the pulse ionization operation, and generating a real-time ionization process state set according to an ionization discharge intensity characteristic, a medium temperature distribution characteristic and a gas generation rate characteristic in the real-time ionization process state; and performing matching analysis on the real-time ionization process state set and historical real-time ionization process state characteristics to generate a new pulse ionization control sequence.

Systems and methods for nitric oxide generation are provided. In an embodiment, an NO generation system can include a controller and disposable cartridge that can provide nitric oxide to two different treatments simultaneously. The disposable cartridge has multiple purposes including preparing incoming gases for exposure to the NO generation process, scrubbing exhaust gases for unwanted materials, characterizing the patient inspiratory flow, and removing moisture from sample gases collected. Plasma generation can be done within the cartridge or within the controller. The system has the capability of calibrating NO and NO2 gas analysis sensors without the use of a calibration gas.

The present invention relates to a process for the capture of a noble metal, especially of rhodium and / or platinum, lost by volatilization from a catalyst to a high heated gas stream (including local heating due to a highly exothermic reaction) by contacting the highly heated gas stream containing the volatilized noble metal with a first oxide element comprising an oxide of formula A2O3, especially Nd2O3, as well as the use of an oxide of formula A2O3, especially Nd2O3 for capture of such a noble metal or catchment devices comprising an oxide of formula A2O3, especially Nd2O3. This process is especially useful in relation to the industrial processes like the Ostwald process (showing a highly exothermic reaction) where a catalyst containing rhodium and platinum is used. In selected circumstances these oxides may also act on the decomposition of unwanted N2O arising in said Ostwald process.

A burner basket assembly of an ammonia oxidation reactor, wherein the burner basket assembly comprises a burner basket inner side wall, a gas-permeable bottom plate, wherein between the burner basket inner side wall and the bottom plate a circumferential radial clearance is present, an L-shaped clearance cover profile which comprises a horizontal clearance cover plate and a vertical clearance cover plate which has a certain length, wherein the horizontal and the vertical clearance cover plate are mechanically fixed to each other, and wherein the L-shaped cover profile during operation is displaceable in a vertical direction in view of the burner basket inner side wall, a support ring which is mechanically fixed to the burner basket inner side wall, an upside-down positioned L-shaped locking profile, comprising a horizontal locking plate and a vertical locking plate which are mechanically fixed to each other, wherein the horizontal locking plate is mechanically fixed to the support ring, wherein the L-shaped locking profile, the support ring and the respective part of the burner basket inner side wall limit a ring-shaped gap into which at least a top part of the vertical clearance cover plate is located, and wherein between the support ring and the vertical clearance cover plate a distance is arranged which is such that the vertical displacement of the vertical clearance cover plate in view of the burner basket inner side wall is limited by the support ring and at all times during the operation of the burner basket, collision between the L-shaped clearance cover profile and the L-shaped locking profile is avoided.

The present disclosure provides system and method for synthesis of green ammonia and other nitrogenous fertilizers derived from it including urea and nitric acid (as well as others that may be produced by any combination / reaction of these) by coupling renewable energy and Carnot battery with Solid-Oxide Electrolyser Cell (SOEC) and Direct Air Capture (DAC). 5 The system provides a solution for round-the-clock renewable energy using Carnot battery that provides both heat and power to run SOEC. The heat from Carnot battery is used by DAC to capture carbon dioxide from air. A nitrogen-oxygen generator may produce nitrogen using continuous power from Carnot battery. Ammonia may be produced by using hydrogen from SOEC, and nitrogen from the nitrogen-oxygen generator. Urea may be produced using 0 carbon dioxide from DAC and ammonia. Ammonia and oxygen from SOECs and nitrogen- oxygen generator may be used for synthesis of nitric acid, and other nitrogenous fertilizers. The process heat from ammonia and nitric acid synthesis is recycled back to the Carnot battery.

In an example method, a solution is introduced to an interior opening of a nitric oxide permeable polymeric object. The solution includes a solvent and S-nitroso-1-adamantanethiol dissolved in the solvent. The solution is allowed to soak in the interior opening of the nitric oxide permeable polymeric object for a time up to 12 hours. The solution is then removed from the interior opening of the nitric oxide permeable polymeric object.

There is provided a method for the synthesis of nitrogen oxides (NOx) comprising the steps of providing a gas mixture comprising oxygen and nitrogen; and heating the gas mixture to a temperature of at least 2300 K at a pressure of 10-100 bar in a thermal reactor forming a gas mixture comprising NOx. There is also provided a method for the production of HNO3.

This invention discloses a process for producing dilute nitric acid using a tail gas oxygenation cycle, belonging to the field of nitric acid preparation. First, the nitrogen-oxygen ratio is controlled to heat the nitrogen-oxygen mixture before it enters an ammonia mixer. The mixture undergoes ammonia oxidation in an oxidation furnace to produce NO. After recovering heat through a waste heat boiler, economizer, and demineralized water preheater, the mixture is cooled by a rapid cooler and then enters a dilute acid separator. The condensed dilute acid from the bottom of the separator is transported to an oxidation absorption tower. At the bottom of the oxidation absorption tower, NO is further oxidized to NO2 in the mixed gas. The remaining NO at the bottom of the oxidation absorption tower... x The mixed gas enters the upper part of the oxidation absorption tower through a baffle plate, where oxidation and absorption occur simultaneously. In the lower part of the absorption section, 55-60% dilute nitric acid is formed and flows to the upper part of the bleaching tower. After treatment in the bleaching tower, the finished acid flows out. The tail gas from the top of the oxidation absorption tower is pressurized by a booster and then enters an oxygen mixer for recycling. This invention solves the problem of tail gas pollution in nitric acid production, with low investment costs, high finished acid concentration, and low energy consumption.

The invention belongs to the technical field of NO gas preparation in the production process of coal ethylene glycol devices, and discloses a start-up method of an NO gas production device in coal ethylene glycol, which comprises the following steps: step 1): preparing materials; according to the driving method disclosed by the invention, key process indexes such as nitric acid dropping speed, pressure, temperature and NO gas flow are strictly controlled in the whole driving process, so that severe reaction and overpressure safety accidents are prevented, and the gas quantity required by a downstream dimethyl oxalate synthesis unit is stably supplied.

The present application relates to a kind of purification method of nitric oxide gas, comprising the following steps: crude nitric oxide gas is imported into extraction column, and the extraction phase obtained after extraction is imported into resolution column for temperature resolution;Nitric oxide gas resolved is imported into ethanol absorption tower after alkali washing tower and condenser;Again imported into the adsorption tower filled with 13X molecular sieve;After adsorption, the gas is collected into product collection bottle, and the purity of more than 99.99% nitric oxide product is obtained.The present application uses ferrous sulfate solution as extractant, extracts refined nitric oxide, realizes the efficient extraction of nitric oxide by the coordination reaction of ferrous ion and nitric oxide in the purification process, then uses ethanol as absorbent, utilizes the significant difference in solubility of nitric oxide and nitrous oxide in ethanol, can selectively absorb the nitrous oxide impurity difficult to remove, finally uses 13X molecular sieve to further remove nitrous oxide, which is beneficial to reduce disproportionation reaction and improve product purity.

A nitric oxide delivery system can include a cassette which is a single use disposable component used to store liquid N2O4 activate upon operator demand, convert N2O4 to NO2 via a heating element(s) controlled by a console to deliver NO2 at a controlled flow rate, direct concentrated NO2 to a contained pair of conversion cartridges and exhaust NO gas to the console for delivery to the patient.

A process and system are disclosed for producing lithium oxide from lithium nitrate. In the process and system, the lithium nitrate is thermally decomposed in a manner such that a fraction of the lithium nitrate forms lithium oxide, and such that a remaining fraction of the lithium nitrate does not decompose to lithium oxide. The thermal decomposition may be terminated after a determined time period to ensure that there is a remaining fraction of lithium nitrate and to thereby produce a lithium oxide in lithium nitrate product. The lithium oxide in lithium nitrate product may have one or more transition-metal oxides, hydroxides, carbonates or nitrates added thereto to form a battery electrode. The lithium oxide in lithium nitrate product may alternatively be subjected to carbothermal reduction to produce lithium metal.

Disclosed is an apparatus for conversion of ammonia into oxides of nitrogen which may comprise an adiabatic burner (108), a set of platinum / rhodium alloy catalytic gauzes (102A), (102B), and (102C), a waste heat recovery boiler (WHRB) (110), an absorption tower (302A), (302B), (302C), (302D) and (302E), a NaOH tank (306) and a surge tank (304). Further, the adiabatic burner may be configured to carry out catalytic oxidation of air and ammonia, using catalytic gauzes (102A), (102B), and (102C) of platinum / rhodium alloy. Further, the mixture of air and ammonia may be selectively oxidized to oxides of nitrogen, which may be absorbed in an alkali medium in the absorption tower (302A), (302B), (302C), (302D) and (302E), to yield sodium nitrites and nitrates.

The invention relates to a process for producing nitric acid comprising at least one step for treating a gaseous effluent containing N2O, said process comprising at least the following steps in this order: - a step in which ethanol is added to the gaseous effluent; - a step for treating the gaseous effluent which is a decomposition step of the N2O on a catalytic bed containing at least one catalyst comprising an iron-exchanged ferrierite zeolite, at a temperature below 400°C. The invention also relates to a nitric acid production unit.

The present disclosure describes systems and methods for controlling the electrical generation of nitric oxide. In some aspects, a system for generating nitric oxide comprises a plasma chamber housing two or more electrodes in communication with a resonant high voltage circuit configured to send a signal to the plasma chamber for generating nitric oxide in a product gas from a flow of a reactant gas, and a controller configured to generate a pulse width modulation signal having multiple harmonic frequencies to excite the resonant high voltage circuit. The controller is configured to adjust the duty cycle of the pulse width modulation signal, the controller selecting the duty cycle based on a target voltage before plasma formation and a target current after plasma formation in the plasma chamber.

The application discloses a method for generating nitric oxide gas, and belongs to the field of gas preparation and medical treatment, and is characterized in that the method for generating nitric oxide gas is to mix liquid medicament with solid medicament, to make the liquid medicament and the solid medicament react chemically, so as to generate nitric oxide gas with a certain concentration, the effective component of the solid medicament is nitrosyl iron sulfate, and the liquid medicament is one or a mixture of several kinds of alkali solution or slurry and salt solution or slurry. The application further discloses a corresponding device for generating nitric oxide gas.

Systems and methods are provided for generating a nitric oxide (NO) gas. A plasma generating device is configured to produce a plasma to ionize a flow of a reactant gas into a product gas that comprises NO, NO2, oxygen, and nitrogen gases. A controller is configured to regulate an amount of NO in the product gas using parameters as input to the controller. A gas separation device comprising a housing including product gas inlets and sweep fluid inlets to receive a flow of the product gas and a flow of the sweep fluid such that the flows of product gas and sweep fluid are opposed flows. A membrane is positioned inside the housing and permits flow of a subset of gases of the product gas therethrough so the product gas exiting the housing includes NO.

A method for operating a turbomachine (10) includes directing a stream of ammonia vapor to one or more hot gas path components (300) of the turbomachine (10). This transfers heat from the one or more hot gas path components (300) to the ammonia vapor. The method also includes cracking the ammonia vapor using the heat from the one or more hot gas path components (300), producing hydrogen gas and nitrogen gas. The method further includes directing the hydrogen gas produced by cracking the ammonia vapor to a combustion chamber (24) of the turbomachine (10).

The object of the present invention is to provide a stable isotope enrichment device and a stable isotope enrichment method capable of reducing the discharge amount of toxic or combustible substances or substances causing environmental load in the atmosphere and reducing the amount of raw materials used. The present invention provides a stable isotope enrichment device, including: a distillation column group in which a plurality of distillation columns are connected in a cascade; a raw material supply line (30) that supplies a raw material into a first distillation column (1); a product line (31) that withdraws a product from another distillation column located on the secondary side of the first distillation column (1); an isotope-depleted fluid withdraw line (32) that withdraws an isotope-depleted gas or an isotope-depleted liquid from the first distillation column (1) or another distillation column located on the primary side of the one distillation column (1); an isotope exchange reactor (22) at which the isotope-depleted gas or the isotope-depleted liquid is subjected to an isotope exchange reaction, the isotope-depleted gas or the isotope-depleted liquid is regenerated such that the concentration of molecules containing a target stable isotope in the isotope-depleted gas or the isotope-depleted liquid approaches the natural abundance ratio, and an isotope-regenerated gas or an isotope-regenerated liquid is produced; and an isotope-regenerated fluid return line (33) that re-supplies the isotope-regenerated gas or the isotope-regenerated liquid into the first distillation column (1).

Provided herein are method of treating a patient with nontuberculous mycobacteria by administering nitric oxide to the patient for at least 100 days to increase functional capacity and quality of life of the patient.

The present invention relates to a catalyst system comprising more than one catalyst network, wherein at least one of the catalyst networks contains at least one noble metal wire consisting of a binary PtRh alloy. The binary PtRh alloy consists of 3.4-4.6 wt. % of rhodium, impurities and the remainder platinum. The catalyst system does not comprise a catalyst network containing a noble metal wire made of a further binary PtRh alloy comprising more than 7 wt. % of rhodium. The invention also relates to a method for the catalytic oxidation of ammonia, in which a catalyst system according to the invention is used.

Disclosed herein is a system and method comprising an apparatus for delivering a therapeutic amount of nitric oxide to a subject, the apparatus comprising at least one air inlet; a first receptacle configured to host a first source of nitric oxide; a second receptacle configured to host a second source of nitric oxide; a control unit configured to communicate with the first receptacle and the second receptacle and to selectively couple the at least one air inlet to at least one of the first receptacle or the second receptacle to deliver the nitric oxide from the first or the second source; a first outlet coupled to the first receptacle to deliver nitric oxide; and a second outlet coupled to the second receptacle to deliver nitric oxide. The first source can be provided to a ventilator and the second source can be provided to an ECMO device.