17 results about "Gaseous oxygen" patented technology

A method for preparing a pharmaceutical composition having a drug-containing core encapsulated by one or more metal oxide materials is provided. The method comprises the following sequential steps: (a) loading particles containing a drug into a reactor; (b) applying a vaporized or gaseous metal precursor to the particles in the reactor; (c) performing one or more pump purification cycles on the reactor using an inert gas; (d) applying a vaporized or gaseous oxidant to the particles in the reactor; and (e) performing one or more pump purification cycles on the reactor using an inert gas. The temperature of the particles does not exceed 35°C. This produces a pharmaceutical composition comprising a drug-containing core encapsulated by one or more metal oxide materials.

The present disclosure provides methods and apparatus for hydrothermal oxidation of organic matter. The method includes pumping organic matter in an aqueous stream into a first section of a reactor, pumping a gaseous oxidant into the first section of the reactor, maintaining conditions in the reactor at a pressure in a range from about 2 bar to about 250 bar and a temperature in a range from about 100°C to about 373°C, subjecting the organic matter in the aqueous stream and the gaseous oxidant to high intensity mixing in the first section of the reactor, transferring the organic matter in the aqueous stream and the gaseous oxidant to a second or subsequent substantially horizontally arranged tubular section of the reactor, wherein at least some of the organic matter containing aqueous stream is in a liquid phase and at least some of the gaseous oxidant is in a gas phase, and maintaining a rate of the liquid phase traveling through at least a portion of the second or subsequent section of the reactor at a maximum velocity of about 0.1 m / sec or maintaining a Reynolds number of the liquid phase traveling through at least a portion of the second or subsequent section of the reactor in a range from about 0 to about 10,000.

Disclosed are a gas-phase hydrogen peroxide generation assembly and a substrate processing apparatus including same. The gas-phase hydrogen peroxide generation assembly may have a vaporization module and a fluid supply module. The vaporization module may be configured to convert liquid hydrogen peroxide into gas-phase hydrogen peroxide. The fluid supply module may include a first line configured to, in a first operation mode, supply the liquid hydrogen peroxide to the vaporization module. The fluid supply module may be configured to, in a second operation mode, discharge a residual of the liquid hydrogen peroxide to a drain using a discharge fluid. The residual may be generated in the first operation mode and remain in the first line.

The application relates to the technical field of nitrite synthesis, and discloses a synthesis method and a synthesis device of alkyl nitrite. The synthesis method comprises the following steps: firstly, mixing gaseous nitric oxide and gaseous oxygen to obtain a mixture through a first reaction; and then, mixing the mixture with alkyl alcohol to obtain alkyl nitrite through a second reaction. The synthesis method greatly shortens the reaction time, increases the yield of alkyl nitrite, does not have a complicated post-treatment process and a large amount of by-product nitric acid, and is beneficial to cost saving and time saving.

A metallic particle combustion energy production system (S1) comprising a set of elementary combustion reactors (6, 6b), each comprising a metallic particle burner coupled to a combustion chamber, means (1, 2, 3, 4) for selectively feeding said elementary combustion reactors (6) with iron particles and gaseous oxidizer, means for recovering the heat from combustion in said elementary combustion reactors (6), means (9, 11, 12, 15, 16) for collecting metal oxides at the outlet of the combustion chambers, and means for controlling the selective feeding means according to at least one predetermined setpoint. See FIG. 1

Title of the Invention: Gas Supply Installation Including a Liquid Oxygen Source Supplying a Hospital Network. The invention relates to an oxygen supply installation (1) for supplying gaseous oxygen to at least one gas pipeline (2) carrying oxygen within a hospital facility, comprising a first oxygen source (10) containing oxygen (O2) fluidly connected to the gas pipeline (2), and a second oxygen source (20) containing gaseous oxygen (GOX) fluidly connected to the gas pipeline (2). The first oxygen source (10) comprises at least one LOX tank (11) containing oxygen in liquid form (LOX) and at least one evaporator device (12) for vaporizing liquid oxygen (LOX) from said at least one LOX tank (11) and obtaining gaseous oxygen (GOX) at a first pressure (P1). Abstract Figure: Figure 1

The invention relates to jet engines, and more particularly to pulse detonation engines. The desired technical result, namely increased energy efficiency and reliability, is achieved in an engine having a combustion chamber configured in the form of a detonation resonator that opens into an exhaust nozzle. The resonator is an aspherical reflector that is symmetrical about the axis of the engine. A gaseous fuel and a gaseous oxidizer are used in the engine, together with a single-step combustion process. If a hydrocarbon fuel is to be used, the fuel duct is provided with a pyrolysis chamber. Pyrolysis is achieved as a result of the fuel flow coming into contact with the heated rear side of the reflector. A mixture of fuel and oxidizer is fed into the combustion chamber through an annular supersonic injection system. To initiate detonation, the engine can be provided with a detonation initiator in the form of a tube which is blind at the distal end and open at the end disposed in the combustion chamber, said tube lying along the axis of the engine. The detonation products flowing through the exhaust nozzle generate a thrust which propels the engine in the opposite direction. This pulse detonation engine design is simple and reliable and provides for the highly efficient generation of propulsive thrust force by maintaining cyclic resonant detonation at a frequency of around 10 kHz.

A method of additive manufacture is disclosed. The method may include creating, by a 3D printer contained within an enclosure, a part having a weight greater than or equal to 2,000 kilograms. A gas management system may maintain gaseous oxygen within the enclosure atmospheric level. In some embodiments, a wheeled vehicle may transport the part from inside the enclosure, through an airlock, as the airlock operates to buffer between a gaseous environment within the enclosure and a gaseous environment outside the enclosure, and to a location exterior to both the enclosure and the airlock.

Manufacturing techniques for fabricating a polymer or other substrate optimized for growing cells is described, which takes the form of a micro-thin bag with gas permeable sides. Sides of the bag can be held at a fixed distance from one another with a multitude of tiny micropillars or other spacers extending between them, keeping the bag at a predetermined thickness and preventing the bag from collapsing and the sides from sticking together. In other embodiments, the sides may be held apart by gas pressure alone. A 0.01 μm to 1000 μm parylene or other biocompatible coating over the bag outsides controls the permeability of the bag material and provides a bio-safe area for cell growth. An alternate configuration uses open-cell foam with skins coated with a biocompatible coating. Tubes going into multiple bags can be connected to a manifold that delivers gaseous oxygen or removes carbon dioxide and other waste gases. Multiple bags can be stacked together tightly, with o-ring spacers in between, and housed within a vessel to form a high-surface area, ultra-compact cell growing system. For cells growing on the bags, liquid nutrients can be fed by way of the tube spacers, and oxygen and waste gases permeated through the bag sides and transported within the bags.

This invention relates to the field of air separation technology, and provides an integrated oxygen and nitrogen co-production separation device and method. The integrated oxygen and nitrogen co-production separation device couples an air compressor, a purifier, a nitrogen generation membrane, a distillation column, and other equipment. Using air as raw material, the air is compressed by the air compressor, and after the purifier removes water and carbon dioxide, it enters the membrane device to separate nitrogen (purity ≥95%) and oxygen-enriched air (purity ≥30%). The nitrogen (purity ≥95%) undergoes single-stage distillation in distillation column I to achieve the co-production of high-purity gaseous nitrogen (purity ≥99.999%) and liquid nitrogen. The oxygen-enriched air undergoes two-stage distillation in distillation columns II and III connected in series to achieve the co-production of low-purity gaseous oxygen (purity ≥99.5%), liquid oxygen (purity 93%), and high-purity oxygen (purity ≥99.999%).

The invention provides a method for cryogenic separation of air using an air separation plant (100, 200, 300) configured as a high pressure air separation plant, wherein several partial air streams are formed from initially compressed air (A), which are at least partially further compressed, cooled in a main heat exchanger (3) and expanded before being introduced into a column system (10). The partial air streams include a first partial air stream (C) and a second partial air stream (E), the air of which is compressed in parallel in a first warm booster (5) and a second warm booster (7) and thereafter expanded in a first expander (4) and a second expander (6) which are mechanically connected to the first booster (5) and to the second booster (7), respectively. Gaseous oxygen is produced and withdrawn at an internal pressure of between 3 bar and 9 bar absolute, without using recirculation or excess air and without using a Lashmet turbine. A corresponding air separation plant (100) is also part of the invention.

This application provides a reusable gaseous-oxygen-methane torch igniter, comprising an igniter housing having a combustion chamber and a methane injection chamber. One end of the igniter housing is provided with a nozzle structure, including a first methane nozzle, a gaseous-oxygen nozzle, and a second methane nozzle coaxially arranged from the inside out. The three nozzles are respectively connected to the combustion chamber, and the first and second methane nozzles are respectively connected to the methane injection chamber. The gaseous-oxygen nozzle is connected to a gaseous-oxygen injection orifice. A first injection channel is connected between the methane injection chamber and the inner cavity of the first methane nozzle, the extension direction of the first injection channel being tangent to the outer periphery of the first methane nozzle. A second injection channel is connected between the methane injection chamber and the inner cavity of the second methane nozzle, the extension direction of the second injection channel being tangent to the outer periphery of the second methane nozzle. By providing three nozzles and injection channels, methane forms a rotating jet during injection, thereby significantly increasing the contact area and mixing intensity between gaseous-oxygen and methane.

The application relates to the technical field of lithium ion batteries, and discloses a ternary / manganese iron phosphate lithium composite positive electrode sheet with a rapid oxygen absorption function and a lithium ion battery, the electrode sheet comprising a current collector and a bottom coating and an upper coating coated in sequence; the bottom coating is mainly composed of high-content ternary materials to guarantee high specific capacity; the upper coating comprises manganese iron phosphate lithium, ternary materials and a rapid oxygen absorption composite component containing low-oxidation-state elements; when the battery is under abnormal working conditions such as high temperature or overcharging, the ternary materials are phase changed to precipitate free oxygen, the oxygen absorption component in the upper coating can rapidly capture oxygen and generate in-situ oxidation reaction to convert gaseous oxygen into stable solid substances. The application utilizes the synergistic mechanism of physical blocking and chemical oxygen consumption to cut off the oxygen source of electrolyte oxidation and decomposition, reduces the gas production and heat production in the battery cell, can delay the triggering of thermal runaway, and improves the safety performance of high-specific-capacity batteries.

This invention relates to the field of refrigeration technology, and particularly to a cryogenic propellant storage system and method. The system includes: a compressor compressing helium gas; a first portion of the compressed helium gas flows into a circulating refrigeration assembly, and a second portion flows into a heating assembly; the circulating refrigeration assembly cools the first portion of helium gas and uses it to cool liquid hydrogen stored in a liquid hydrogen tank and liquid oxygen stored in a liquid oxygen tank; the cooled first portion of helium gas is then returned to the compressor; the heating assembly uses the second portion of helium gas to heat liquid oxygen flowing out of the liquid oxygen tank and liquid hydrogen flowing out of the liquid hydrogen tank, obtaining gaseous oxygen and gaseous hydrogen, which are then transported to the engine; the heated second portion of helium gas is then returned to the compressor. This invention effectively utilizes the high-quality cooling capacity within the storage tanks, improving the efficiency of the circulating refrigeration system.

The present disclosure relates to a process for preparing nitrosyl fluoride by reacting hydrofluoric acid, nitric oxide, and gaseous oxygen. Significant control on side reactions and subsequently on formation of impurities make the process efficient and cost effective. The present disclosure provides a stable nitrosyl fluoride wherein the nitrate content is controlled to less than 500 ppm. Further, the present invention discloses the application of nitrosyl fluoride in a process of synthesizing aryl fluoride. The process comprises a step of diazotizing aromatic amines using nitrosyl fluoride, followed by decomposition to obtain the aryl fluoride. Herein, the stable nitrosyl fluoride ensures a high and consistent yield of aryl fluorides having good purity.

A system of enhancing fuel combustion in an engine which may be a diesel engine or a hydro-diesel engine, by: (a) providing a supply of liquid diesel fuel; (b) using an oxygen concentrator to produce a concentrated oxygen gas; (c) mixing the concentrated oxygen gas into the liquid diesel fuel; and then (d) passing the homogeneous mixture of liquid diesel fuel and concentrated oxygen gas into a combustion chamber of an engine; and optionally (e) providing a supply of hydrogen gas; and (f) mixing the hydrogen gas into the liquid diesel fuel as well.

This application discloses a circularly tangential flat flame nozzle and its combined array structure, relating to the field of nozzle structures. It includes a nozzle body with an inlet end and an outlet end at both ends. Gaseous oxidant enters from the inlet end and exits from the outlet end. The inlet end has a circular cross-section, and the projection of the outlet end along the axis of the nozzle body's inlet end is elliptical. The outlet end is arc-shaped, with its axis perpendicular to the plane containing the major axis of the ellipse and the inlet end axis, and the arc axis intersects with the inlet end axis. This provides a sufficiently large scattering area, allowing the process gas and oxidant to mix thoroughly at the nozzle outlet, improving the combustion efficiency of the process gas, and forming a uniform temperature distribution in the reactor combustion chamber.