79results about "Oxygen/ozone/oxide/hydroxide" patented technology

The invention relates to a method for simultaneously preparing lithium hydroxide and sulfuric acid. The invention provides a method for simultaneously preparing lithium hydroxide and sulfuric acid, which comprises the following steps: preparing a bipolar membrane electrodialysis device which comprises a first bipolar membrane, an anion exchange membrane, a cation exchange membrane and a second bipolar membrane, and forming an acid chamber between the first bipolar membrane and the anion exchange membrane, a salt chamber is formed between the anion exchange membrane and the cation exchange membrane, and an alkali chamber is formed between the cation exchange membrane and the second bipolar membrane; a lithium sulfate aqueous solution is added into a salt chamber of the bipolar membrane electrodialysis device, a sulfuric acid aqueous solution is added into an acid chamber, and a lithium hydroxide aqueous solution is added into an alkali chamber; and discharging the desalted solution formed in the salt chamber of the bipolar membrane electrodialysis device, discharging the sulfuric acid aqueous solution formed in the acid chamber, and discharging the lithium hydroxide aqueous solution formed in the alkali chamber.

This paper discloses a rapid cyclic pressure swing adsorption (PSA) method for separating O2 from N2 and / or Ar. The method uses a carbon molecular sieve (CMS) adsorbent with a driving force of 1 atma and 86 atma, as indicated by a linear driving force model. o F measures at least 5% O2 / N2 and / or O2 / Ar kinetic selectivity and at least 0.2000% O2 adsorption rate (1 / s).

The present invention relates to an exothermic process for producing metal oxides or metalloid oxides, comprising introducing metal and / or metalloid precursors into a flame formed by burning a gas mixture comprising oxygen and hydrogen, at least a portion of the hydrogen being obtained from the electrolysis of water or an aqueous solution using electrical energy obtained at least in part from a renewable energy source, and at least a portion of the thermal energy of the flame being transferred by at least one exchanger to a first heat transfer medium, thereby heating the first heat transfer medium to a maximum temperature in the range between 80°C and 150°C.

[Problem] Provided are an ammonia-hydrogen mixed fuel production apparatus and a fuel supply system, which are capable of stably acquiring hydrogen from ammonia even when a required ratio of a fuel is changed. [Solution] An ammonia-hydrogen mixed fuel production apparatus 1010A includes an oxygen separator 13 that separates oxygen (O2) 12 from air 11 at a desired concentration, a reforming reactor 15 that converts ammonia (NH3) supplied from a raw material supply portion 14 into hydrogen (H2) by using the oxygen of the desired concentration from the oxygen separator 13, and a gas component analyzer 17 that measures a concentration of one or both of the hydrogen and the ammonia in a reformed gas 16 from the reforming reactor 15.

The present invention relates to an enhanced catalytic nickel oxide sheet having an organic part which includes non-stoichiometric nickel oxides dispersed in an organic matrix, wherein the catalytic sheet is supported on a substrate. The invention also relates to a method for obtaining the catalytic film and to its uses as an electrode in electrocatalysis of water or in photocatalysis.

To provide a gas supply device capable of performing an energy-saving operation by supplementing the lack of heating capacity for preheating a solid electrolyte by heating a gas on an intake side of a gas generation unit or alternating a heating mechanism for preheating the solid electrolyte, and a gas production method using the gas supply device.SOLUTION: A gas supply device including a gas generation unit with a solid electrolyte comprises a gas generation unit, and a heat conduction mechanism which can exchange heat in a gas on the intake side or a gas on the exhaust side of the gas generation unit.SELECTED DRAWING: Figure 1

A method for efficient photocatalysis in which electric charge carriers are energetically excited upon absorption of electromagnetic radiation, characterized in that the charge carriers are separated by a pyroelectric field.

Method for producing pyrolytic metal and / or metalloid oxides with the aid of a burner (200) having a burner head (100) comprising an outlet end (104), a central section (110) having at least one central channel (112), and a jacket channel (116) positioned concentrically around the central section, and wherein the following method steps are included: providing at least one metal or metalloid precursor, at least one fuel gas and oxygen via the central section (110); providing at least one fuel gas via the jacket channel (116); providing a flame (190) by combusting the fuel gas at the outlet end (104), wherein the ratio R1 = VC / VJ is at most 6.0, wherein VC is the normalized gas outlet velocity of all gases from the central section (110), and VJ is the normalized outlet gas velocity of all gases from the jacket channel (116).

This invention relates to a water electrolysis system for producing compressed hydrogen, the system comprising a water electrolysis cell stack, a multiphase pump disposed downstream of the electrolysis cell stack, and a hydrogen gas-liquid separator. The multiphase pump is disposed between the water electrolysis cell stack and the hydrogen gas-liquid separator. The invention also relates to a method for producing compressed hydrogen in a water electrolysis system, the method comprising: supplying deionized water or liquid electrolyte to the water electrolysis cell stack; producing hydrogen in the water electrolysis cell stack; compressing the generated hydrogen and a mixture of entrained deionized water or liquid electrolyte in the multiphase pump; and performing gas-liquid separation of the compressed generated hydrogen and the entrained deionized water or liquid electrolyte mixture in the hydrogen gas-liquid separator.

Metal-containing precursor materials are contacted with an initial nitric acid solution containing a predetermined nitric acid concentration, at a predetermined temperature, and a predetermined atmospheric pressure to remove at least one valuable metal to form a nitrates solution having other metals therein. The resultant nitrate solution is transported to a converter. A sulfuric acid solution is introduced along with nitrate solution into the converter to convert the nitrates into sulfates in excess sulfuric acid solution. The formed solid sulfates and sulfuric acid are separated nitric acid solution containing a predetermined NOx concentration is recovered from the vapor stream by condensation therein.

A separation membrane for separating hydrogen and a gas L, in which an activation energy Ep(S) (kJ / mol) of a permeance P(S) (mol / (m2·s·Pa)) of hydrogen through the separation membrane derived within a range of a temperature Tam (° C.) satisfying Formula (1-I) described below and an activation energy Ep(L) (kJ / mol) of a permeance P(L) (mol / (m2·s·Pa)) of a gas L (provided that hydrogen is excluded) through the separation membrane derived within the same temperature range satisfy Formula (1-II) described below: 5 (° C.)≤Tam (° C.)≤200 (° C.) (1-I)|Ep(L)|<|Ep(S)| (1-II). There can be provided a separation membrane for separating and recovering hydrogen, a separation membrane laminated body, a separation module or separation tower, a hydrogen recovery system, and a method for separating and recovering hydrogen, which enable safe and highly efficient separation and recovery of hydrogen from a mixed gas composed of molecules having relatively close dynamic molecular diameters even when a supply pressure is relatively low, including separation and recovery of hydrogen from a hydrogen-oxygen mixed gas.

To provide an oxygen isotope concentrator where the reduction of an oxygen treatment amount can be performed by simplifying device configuration.SOLUTION: An oxygen isotope concentrator 1 comprises: a plurality of device groups having an ozone generation device 11, a carbon tetrafluoride feeder 17, an oxygen separator 12, an ozone photolysis device 13, a collector 14 and a concentrator 15; one or more oxygen supply passages 16 introducing oxygen separated at the concentrator 15 of the kth group (1≤k≤(n-1)) to the ozone generation device 11 of the (k+1)th group; and one or more mixed gas return passages 23' by which a mixed gas of ozone separated at the concentrator 15 of any jth group (2≤j≤n) and carbon tetrafluoride is introduced to any one of the first group to the (j-1) group.SELECTED DRAWING: Figure 1

A regolith oxygen extraction system that extracts oxygen and produces molten regolith by processing and heating a continuous regolith feed. The system feeds regolith through a vertical hopper to a reaction chamber, the regolith itself sealing the inlet to the reaction chamber while maintaining continuous flow. The heated regolith reacts within the reaction chamber to produce oxygen and processed regolith. The processed regolith is removed from the reactor chamber through an extrusion nozzle, the processed regolith itself sealing the produced gases within the reactor chamber while maintaining continuous flow of processed regolith. The system employs non-contact reaction temperature measurement and rapid oxygen content measurement in the regolith upstream and downstream of the reaction zone, and may be integrated with multiple oxygen extraction methods.

The present invention relates to a pyrogenic process for manufacturing metal oxides or metalloid oxides wherein a metal precursor and / or a metalloid precursor is introduced into a flame formed by burning a gas mixture comprising oxygen and hydrogen, wherein at least a part of the hydrogen has been obtained from electrolysis of water or an aqueous solution, using electrical energy, at least a part of which has been obtained from a renewable energy source, and wherein at least a part of the thermal energy of the flame is transferred to a first heat transmission medium by means of at least one exchanger, thereby heating the first heat transmission medium to a maximal temperature in the range between 80 and 150 °C.

The present invention relates to a pyrogenic process for manufacturing metal oxides or metalloid oxides wherein a metal precursor and / or a metalloid precursor is introduced into a flame formed by burning a gas mixture comprising oxygen and hydrogen, wherein at least a part of the hydrogen and at least a part of the oxygen have been obtained from electrolysis of water or an aqueous 5 solution, using electrical energy, at least a part of which has been obtained from a renewable energy source, and wherein water (H2O) is introduced into the flame, and wherein the total molar ratio TRON of oxygen gas to nitrogen gas TRON = n(O2) : n(N2) of all streams introduced into the flame prior to ignition combined is TRON ≥ 0.25 and ≤ 1. 10

The application discloses a gas-liquid phase parallel flow rotating liquid film reactor and application thereof in preparation of metal hydroxide. The application is based on the basic process of preparing metal hydroxide from a gas-liquid phase precipitation method, and a gas-liquid phase multi-fluid parallel flow rotating liquid film reactor is designed through computational fluid dynamics simulation analysis, multiple gas-liquid fluid inlets are constructed, and the traditional vertical inlet is improved into tangential feeding along the rotating direction, so that the forced mixing process of the gas-liquid two phases in the reaction space is improved, the microscopic mixing and nucleation process of the reactants are strengthened, the inlet anti-overflow device is added, the upward overflow of the increased inlet flow fluid is avoided, the quality control of the product is strengthened, the efficient control of the nucleation particle size and distribution is realized, the production efficiency and product quality can be improved, the product with small particle size and narrow particle size distribution is obtained, the product particle size can be controlled in the range of 15-200 nm, and the primary particle size distribution range can be reduced to 30-60 nm.

Provided in the embodiments of the present application is a preparation method for an MOX fuel powder. An MOX fuel powder comprises a plurality of actinide nuclide oxides. The method comprises the following steps: S1, mixing different actinide nuclide salts with urea to form a mixed actinide eutectic system, the actinide nuclide salts being one of hexavalent actinide nitrates, tetravalent actinide nitrates, hexavalent actinide oxalates and tetravalent actinide oxalates; S2, heating the mixed actinide eutectic system obtained in step S1 to a first preset temperature for performing deamination treatment on the mixed actinide eutectic system, so as to remove the urea therein; and S3, heating the product obtained after the deamination treatment in step S2 to a second preset temperature for performing denitrification and / or decarburization treatment on the product obtained in step S2, so as to obtain a plurality of actinide nuclide oxides. Provided in the embodiments of the present application is the preparation method for an MOX fuel powder, which is simple, does not produce a waste liquid, is more economical and environmentally friendly, and can obtain a completely uniform MOX fuel powder.

A water splitting system includes a hydrogen production chamber including a hydrogen production port, an oxygen production chamber including an oxygen collection port, an ion exchange membrane coupling the hydrogen production chamber and the oxygen production chamber, and a photocatalytic structure including a first catalytic portion disposed in the hydrogen production chamber and a second catalytic portion disposed in the oxygen production chamber. The first catalytic portion is configured for production of hydrogen via the hydrogen production port. The second catalytic portion is configured for production of oxygen via the oxygen production port.

The invention relates to a method for decontaminating a thermoplastic preform (14) by exposing at least a portion of the preform (14) to reactive species (RS) obtained by mixing a precursor agent (AP) with a plasma (P), the plasma (P) being generated by injecting a carrier gas (G) into a reactor (40), characterized in that the mixing of the precursor agent (AP) and the plasma (P) is carried out exclusively outside the reactor (40) before coming into contact with the preform (14). The invention also relates to a decontamination device (50) for implementing the method.

Methods and systems for producing sulfuric acid and / or sulfur trioxide, which may include contacting a first stream that includes oxygen and a second stream that includes sulfur to produce a third stream that includes sulfur dioxide, and subjecting the third stream to an oxidation reaction to produce a fourth stream that includes sulfur trioxide. The contacting of the first and second streams may include contacting a molar amount of oxygen that exceeds a molar amount of sulfur.

The invention discloses a preparation method of a hollow spherical inorganic oxide based on self-assembly, which comprises the following steps: (1) mixing a passivating agent with an inorganic oxide precursor, performing passivation protection on the inorganic oxide precursor in a transesterification or chelation reaction mode, adding water or an aqueous solution with the pH value of 4-14 for pre-crosslinking, and performing vacuum drying to obtain the hollow spherical inorganic oxide based on self-assembly; a solution A containing an amphiphilic composite precursor is obtained; (2) mixing the solution A with a non-polar compound to prepare a solution B, finally dispersing the solution B in water or an aqueous solution with the pH value of 4-14 to form an oil-in-water structure, then stirring to react for more than 6 hours, and then washing and drying to obtain a hollow spherical oxide precursor; and (3) calcining the hollow spherical oxide precursor to obtain the hollow spherical inorganic oxide. The method does not need an interface agent, a hard template or a high-temperature and high-pressure environment, and has the advantages of low cost, expandability, simple preparation, greenness and safety.

A floating power generation unit is provided which, by dispersing oxygen content in water as fine air bubbles while generating power on the water, increases the activity of aerobic organisms, promotes plankton growth, and improves fishing grounds. This floating power generation unit is provided with a power generator, an oxygen separator, and a float. The power generator and the oxygen separator are arranged on the top surface of the float. The floating power generation unit is provided with a first fine air bubble generating medium which supplies the oxygen separated by the oxygen separator into the water as fine air bubbles and is provided with a second fine air bubble generating medium which supplies the nitrogen separated by the oxygen separator into the water as fine air bubbles.

This disclosure relates to a replaceable photocatalytic cartridge for use in a reactor, and a method for producing the replaceable photocatalytic cartridge. The replaceable photocatalytic cartridge being suitable for use within a reactor that photocatalytically splits water, such as a PWS reactor. In one embodiment, the photocatalytic cartridge comprises a container that contains a substrate that is coated with photocatalytic particles, wherein, in use, the photocatalytic cartridge is configured to be removably inserted into a receiving portion of the reactor such that the coated substrate is adapted to participate in a photocatalytic reaction with H2O and solar radiation within the reactor.

Black mass from disused lithium batteries is leached for recovery of various metals in a process that includes precipitation, solvent exchange, ion exchange, and salt splitting to create multiple product streams for recovery of pure value products. Most typically, the process is a closed-loop process and allows for production of metallic cobalt and nickel, EMD, and a high purity lithium hydroxide or carbonate product with minimal generation of waste streams.

The invention discloses a dynamic self-regulation oxygen production and supply system for mining mechanical equipment in a high altitude area. The dynamic self-regulation oxygen production and supply system comprises a dirty air purification circulation system, an oxygen supply system, a fresh air mixing system and an environment detection and precise oxygen supply system, the dirty air purification circulation system performs two-stage purification treatment on operation dirty air through wet cyclone and dry filtration; the oxygen supply system is pressurized through an air compressor with air pressure compensation, and oxygen-enriched air is prepared by adopting a pressure swing adsorption principle; the fresh air mixing system is used for uniformly mixing the purified circulating air with the oxygen-enriched air; the environment detection and precise oxygen supply system drives a jet device to realize fixed-point oxygen supply by monitoring oxygen concentration in real time and positioning personnel. Through intelligent cooperation of multiple modules, the technical bottlenecks that oxygen carrying is difficult in the high-altitude low-pressure environment, traditional ventilation is high in energy consumption, and the oxygen utilization rate is low are overcome, efficient cyclic utilization of oxygen, accurate supply according to needs and system energy consumption optimization are achieved, and the safety of high-altitude mine excavation operation and the working efficiency of personnel are remarkably improved.

Methods and systems for producing sulfuric acid and / or sulfur trioxide may include contacting a first stream comprising oxygen and a second stream comprising sulfur to produce a third stream comprising sulfur dioxide, and subjecting the third stream to an oxidation reaction to produce a fourth stream comprising sulfur trioxide. The contacting of the first and second streams may include contacting a molar amount of oxygen that exceeds the molar amount of sulfur.

A method for forming aggregates of non-stoichiometric metal oxide nanoparticles is disclosed, comprising the steps described herein.

The invention relates to a method for separating gases which comprises: - a first step in which a gas fuel stream comprising combustible substances that produce gas products when oxidised, and an oxygen-rich inlet stream are passed through at least two modules of oxygen-separating ceramic membranes, such that the two streams come into contact through the membranes and exchange heat; - a second step of selective diffusion of oxygen from the oxygen-rich stream to the fuel stream, such that the outlet streams from the membrane modules are an oxygen-depleted or completely oxygen-free stream and a partially or completely oxidised stream; and - a third step of recovery of at least two separate outlet streams of at least two gases selected from oxygen, nitrogen, carbon dioxide and hydrogen

An apparatus for producing high-purity oxygen includes a heat exchanger for cooling feed air, a first rectification column, and a second rectification column. The first column reduces high-boiling-point impurities from the cooled air to produce an oxygen-containing liquid from a discharge portion. This liquid is then transferred to the second column, which reduces low-boiling-point impurities to yield the final high-purity oxygen product. A dedicated piping system connects the columns and features a branch. First piping, controlled by a first valve, directs the oxygen-containing liquid to the second column to regulate its flow rate. Second piping, controlled by a second valve, branches from the first. This arrangement allows for diversion of the liquid, enabling precise control over the properties of the feed to the second column. This control scheme ensures consistent product quality without reliance on expensive, real-time analytical instruments.