A device and a method for producing hydrogen and byproduct oxygen by using green electricity electrolyzed water are provided. The device comprises an oxygen purifying system, a heat exchange system, an air separation compression and expansion system, an air separation rectification system and a liquid oxygen storage system. The method comprises the following steps: first, purifying oxygen prepared by electrolyzing water by green electricity to remove impurities such as hydrogen, carbon monoxide, carbon dioxide and water in the oxygen, then feeding the pure oxygen into the heat exchange system, performing heat exchange liquefaction to obtain liquid oxygen, coupling the liquid oxygen generated by rectification of the air separation rectification system, and obtaining pressurized oxygen through the heat exchange system and the air separation compression and expansion system.

A system and method for co-producing ultra-high purity oxygen and ultra-high purity hydrogen from a water electrolysis unit is provided. The presently disclosed system and method includes upgrading the crude oxygen stream coming from the water electrolysis unit by means of a small, stand-alone cryogenic distillation system wherein the refrigeration for such cryogenic distillation system is supplied by a nitrogen recycle refrigeration loop.

A system for extracting oxygen from a fluid includes a separator allowing a fluid to pass lengthwise through the separator to produce a mixture with the fluid having at least a portion of oxygen removed from the fluid. The separator includes a wall surrounding an interior portion of a tube. The wall has at least one aperture formed in the wall. The separator also includes at least one magnet positioned adjacently to the at least one aperture. The magnet has a north pole end and a south pole end. A magnetic field gradient is formed between the north pole end and the south pole end, and extends into an interior portion of the tube. The system also includes a storage tank fluidly coupled to the at least one aperture for storing the at least a portion of the oxygen removed from the fluid via the separator.

A system for preparing subcooled liquid oxygen based on mixing of liquid oxygen and liquid nitrogen and then vacuum-pumping, including atmospheric-pressure saturated liquid nitrogen and oxygen tanks. An inlet of the liquid nitrogen tank communicates with pressurized gas, and an outlet is connected to an inlet a of a secondary subcooler. An inlet of the liquid oxygen tank communicates with the pressurized gas, and a first outlet is connected to an inlet b of the secondary subcooler. An outlet c of the secondary subcooler is connected to an inlet d of a primary subcooler. An outlet e of the primary subcooler is connected to a pumping-out device through a rewarming device. A second outlet of the liquid oxygen tank is connected to an inlet n of the primary subcooler. An outlet o of the primary subcooler is connected to an inlet r of the secondary subcooler.

Provided herein are systems, apparatus, and methods for extracting pure oxygen from a liquid. In some embodiments, a system for extracting oxygen from a liquid comprises a separator configured to allow a liquid to pass therethrough and to produce a liquid mixture comprising the liquid having at least a portion of oxygen removed therefrom. The separator comprises a wall surrounding an interior portion of a tube, the wall having at least one aperture formed therein. The separator also comprises at least one magnet positioned adjacently to the at least one aperture having a north pole end and a south pole end forming a magnetic field gradient therebetween and extending into an interior portion of the tube. The system also comprises a storage tank fluidly coupled to the at least one aperture and configured to store the at least a portion of oxygen removed from the liquid via the separator.

The specification and drawings present a new apparatus and method for continuously providing an oxygen-enriched gas/air using a relative motion of selected surface(s) of an apparatus (such as fossil-fueled combustion device/vehicle) relative to an atmospheric air with a speed exceeding a threshold value for, e.g., improving combustion, exhaust and related properties of the apparatus. An oxygen-enriched gas/air layer can be formed along/near each aforementioned surface from the atmospheric air due to pushing the atmospheric air along the surface(s) during that relative motion and collected by corresponding collector gate(s) located inside the apparatus near/adjacent to the corresponding surface. The apparatus can be an object (e.g., a vehicle) moving through the atmospheric air with a relative speed exceeding the threshold value. Alternatively, the apparatus can be a stationary object (e.g., a power generator) while the atmospheric air, having a desired speed exceeding the threshold value, is moved/blown toward the stationary object.

A liquid treatment apparatus comprises: a first tank in which a first gas containing nitrogen and oxygen and a liquid are stored; a plasma generating apparatus, including a first electrode and a second electrode, which effects discharge between the first electrode and the second electrode and thereby generates plasma that makes contact with at least part of the liquid; and a gas supply apparatus that supplies a first part of the first gas from the first tank to the plasma generating apparatus.

An anode for oxygen evolution that operates at a small overpotential and in a stable manner, and can be used favorably in an organic chemical hydride electrolytic synthesis apparatus.

An anode 10 for oxygen evolution that evolves oxygen in a sulfuric acid aqueous solution containing a substance to be hydrogenated dissolved at a concentration higher than 1 mg/L, wherein an anode substrate 10a is composed of a valve metal, and an anode catalyst layer 10b containing at least one oxide, nitride or carbide of iridium, and at least one oxide, nitride or carbide of at least one metal selected from the group consisting of elements belonging to groups 4, 5 and 13 of the periodic table is formed on the surface of the anode substrate 10a.

A carbon negative clean fuel production system includes: a main platform; a heat collection device for capturing heat from a hydrothermal emissions from a hydrothermal vent on a floor of an ocean; a heat-driven electric generator; a heat distribution system including a heat absorbing material and a heat transporting pipe; anchor platforms tethered to the main platform; a mineral separator; a seawater filtration unit; a water splitting device; a sand refinery machine; a carbon removal system; and a chemical production system for producing hydrides, halides and silane. Also disclosed is a method for carbon negative clean fuel production, including: capturing heat; producing electric energy; separating minerals; filtering seawater; splitting water; refining sand; removing carbon dioxide; and producing hydrides, halides, and silane.

Magnetic systems and methods for oxygen separation and purification from fluids utilizing the paramagnetic properties of oxygen. A magnetic field gradient is established in a tube having a first end in flow communication with a source of a fluid containing oxygen. The fluid is flowed through the tube. The magnetic field gradient causes oxygen to be enriched in the fluid on a first interior side of the tube as compared to a second interior side of the tube. For a fluid like air having oxygen, a paramagnetic substance, and other, e.g., diamagnetic, components like nitrogen, argon, carbon dioxide and water vapor, the technology of the disclosure effectively separates oxygen molecules from the other components in magnetic field gradients of sufficient magnitude.