302results 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.

A method of capturing carbon dioxide, including providing a particle containing magnesium oxide, calcium oxide, or a combination thereof; and providing a mixture gas to contact the particle, wherein the mixture gas includes water vapor, carbon dioxide, and nitrogen oxide, and the particle captures the carbon dioxide to form a carbonated particle and a treated gas. The mixture gas has a relative humidity of 25% to 95%, a nitrogen oxide concentration of 20 ppm to 2000 ppm, and a carbon dioxide concentration of 0.05% to 15%.

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.

A method of capturing carbon dioxide, including providing a particle containing magnesium oxide, calcium oxide, or a combination thereof; and providing a mixture gas to contact the particle, wherein the mixture gas includes water vapor, carbon dioxide, and nitrogen oxide, and the particle captures the carbon dioxide to form a carbonated particle and a treated gas. The mixture gas has a relative humidity of 25% to 95%, a nitrogen oxide concentration of 20 ppm to 2000 ppm, and a carbon dioxide concentration of 0.05% to 15%.

There is provided a method for nitrogen oxide (NOx) synthesis, the method comprising: - providing a gas mixture comprising oxygen and nitrogen in a plasma reactor chamber; and - exciting the gas mixture into plasma in the plasma reactor chamber, wherein a duration of the excitation is in the range ≥0.15 / P nanoseconds & ≤90 / P nanoseconds, wherein P is pressure of the gas mixture in atm, and wherein the gas mixture is provided at a pressure P of ≥ 1.1 atm.

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.

Disclosed herein are systems and methods for delivering nitric oxide gas. According to an embodiment, a. nitric oxide gas delivery' system can include: a nitric oxide (NO) source providing NO gas; a plurality of port lights surrounding a plurality of corresponding gas ports, wherein each of the port lights are configured to display a color; and an electronic control circuit, wherein the electronic control circuit is configured to enable the plurality of port lights to display the color based on a flow of the NO gas being delivered through the corresponding gas ports.

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.

Disclosed herein is a console 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 controller configured to selectively couple the at least one air inlet to one of the first receptacle or the second receptacle to deliver the nitric oxide from the first or the second source; and an outlet coupled to the first and / or second receptacle and configured to deliver nitric oxide to a subject.

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 present invention relates to a liquid nitric oxide releasing solution (NORS) comprised of at least one nitric oxide releasing compound and at least one acidifying agent, wherein the NORS provides an extended release of a therapeutically effective amount of nitric oxide gas (gNO). The present invention also relates to a liquid NORS comprised of at least one nitrite compound having a concentration of no greater than about 0.5% w / v and at least one acidifying agent, wherein the NORS releases a therapeutically effective amount of gNO. The present invention also relates to a method for the treatment of a wound in a human, the method comprising administering to the human a liquid NORS comprised of at least one nitric oxide releasing compound and at least one acidifying agent, wherein the NORS provides an extended release of a therapeutically effective amount of gNO. The present invention also relates to a method for the treatment, prevention, or reduction of incidence of a disease or disorder in a human in need thereof, the method comprising administering to the human a liquid NORS comprised of at least one nitrite compound at a concentration of no greater than about 0.5% w / v and at least one acidifying agent, wherein the NORS releases a therapeutically effective amount of gNO.

The invention relates to a method for the catalytic oxidation of ammonia gas by means of an oxygen-containing gas, particularly by means of air, in the presence of a catalyst containing a noble metal, to form nitrogen monoxide, in which, according to the invention, the temperature of an ammonia-air mixed gas is adjusted before contact with the catalyst to a value that is optimum in terms of the nitrogen monoxide selectivity of the reaction. A more detailed observation of the process of the catalytic NH3 oxidation according to the above-mentioned reaction equation (I) 4 NH3 + 5 O2 → 4 NO + 6 H2O (I) would lead to the realisation that the optimum operating mode of a NH3-burner in a HNO3-installation is not achieved by maintaining a constant gauze temperature of the catalyst gauze by automatic adjustment of the NH3 : air ratio. Rather, there is an optimum temperature for each operating condition, which should not be adjusted by modifying the NH3 : air ratio, but by modifying the temperature of the NH3-air mixed gas before contact with the catalyst gauzes.

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.

A method for reducing the NOx emission during start-up and shutdown events of a nitric acid plant, wherein the nitric acid plant comprises a tail gas treatment section (10) including a first catalytic bed (2) for removal of N2O followed by a second catalytic bed (3) for removal of NOx, wherein during a start-up or shutdown the operation of said treatment section (10) is temporarily modified by adding a NOx reducing agent (4) upstream of said first catalytic bed (2), so that said first catalytic bed (2) provides reduction of NOx.

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.

Process for the synthesis of nitric acid comprising a catalytic oxidation step of an ammonia feed in the presence of an oxidant to yield a nitrogen oxide-containing gas, an absorption step of said nitrogen oxide-containing gas in water to produce nitric acid and a tail gas, wherein said oxidant is subjected to multiple compression steps prior to said oxidation step, said multiple compression steps comprise at least a first compression step and a second compression step, wherein inter-cooling is carried out between said compression steps, wherein said inter-cooling comprises a first cooling step in which the compressed oxidant is cooled with a cooling medium selected from a stream of tail gas, a demineralised water stream, or at least a portion of said ammonia feed.

The present invention relates to an absorption tower (10) for a plant for the production of nitric acid by the Ostwald process, comprising a plurality of sieve trays (14) spaced apart from one another and arranged one above the other, an inlet (12) for water in an upper region of the absorption tower, an inlet (13) for gaseous nitrogen oxides in a lower region of the absorption tower (10) and a column sump (15) arranged in the lower end region of the absorption tower beneath the lowest sieve tray, which sump is subdivided by at least one partition (16) into at least two regions (20, 21) separated from one another, wherein, according to the invention, at least one partition (16) is arranged in a course such that the partition divides the column sump (15) into a first, radially inner region (20) and at least one second, radially outer region (21). Because the regions (20, 21) are separated from one another, it is possible initially to trap in a central region the nitric acid which drips from the lowest sieve trays (14) and thus has a higher concentration. The nitric acid then draining from sieve trays located further above, which is less concentrated, can then be captured separately in a region (21) located further outwards.

The utility model discloses an ammoxidation platinum-saving combined net convenient to assemble, which relates to the technical field of combined nets and comprises an annular cylindrical mounting ring frame, internal threads are arranged in the inner wall of the upper part of the mounting ring frame, a binary platinum-rhodium net is mounted in the upper part of the mounting ring frame, and a high target net is mounted in the mounting ring frame below the binary platinum-rhodium net. A supporting net is mounted in the mounting ring frame below the high target net; by means of the protruding columns outside the mounting ring frames, force application operation in the assembling process is facilitated, assembling convenience is improved, the function of quickly connecting the mounting ring frames can be achieved, firm connection between the mounting ring frames can be conveniently achieved through cooperation of the L-shaped grooves, the clamping blocks, the springs and the pressing plates at the bottoms of the mounting ring frames, and the service life of the mounting ring frames is prolonged. The connection stability is improved, the function of stabilizing the structure of the combined net can be achieved, and finally the problems that a traditional combined net is difficult to assemble, insufficient in stability and long in service life are solved.