16 results about "Atmospheric oxygen" patented technology

The utility model discloses refrigeration equipment which comprises a first oxygen adjusting chamber, an oxygen adjusting module, a second oxygen adjusting chamber and an air guide piece, and the first oxygen adjusting chamber comprises a first cavity; the oxygen adjusting module communicates with the first cavity and adjusts the oxygen concentration in the first cavity; the second oxygen adjusting chamber comprises a second cavity, and the second cavity is communicated with the first cavity; and the air guide piece drives the airflow in the first cavity to blow to the second cavity. In this way, on one hand, a natural oxygen concentration gradient is formed between the two chambers, and the height difference of the oxygen concentration of the different chambers is formed; on the other hand, by controlling the rotating speed and the running time of the air guide piece, the second oxygen adjusting chamber can be adjusted to any value in the range interval between the atmosphere oxygen concentration and the oxygen concentration of the first oxygen adjusting chamber, and flexible adjustment of different oxygen concentration environments is achieved in the same refrigeration equipment at low cost; the requirements of different food materials are met.

The present invention provides a device with a simple configuration that efficiently dissolves atmospheric oxygen into a liquid. [Solution] The apparatus comprises a liquid injection section for pouring liquid, and a bent hollow pipe having an upper vertical pipe section, a lower vertical pipe section, and a horizontal pipe section connecting them. When the internal cross-sectional area of ​​the horizontal pipe section is 1a' and the cross-sectional area of ​​the liquid flowing inside the horizontal pipe section is 1b', the condition 1 / 5 ≤ 1b' / 1a' ≤ 2 / 3 is satisfied. Within this range, a cavity is formed in the horizontal pipe section where the mixed flow and the inner wall of the bent hollow pipe form the outer circumference. Bubbles are stored in the cavity, and repeated movement of bubbles between the cavity and the mixed flow promotes the dissolution of oxygen into the liquid.

An exemplary method adjusts one or operating characteristics of an oxygen utilizing system based on atmospheric oxygen content. The method includes detecting, using one or more atmospheric sensors, atmospheric conditions for an atmosphere surrounding the oxygen utilizing system and determining the atmospheric oxygen content based on the detected atmospheric conditions. The method further includes adjusting the one or more operating characteristics of the oxygen utilizing system based on the atmospheric oxygen content.

The present application relates to the technical field of hydrometallurgy, in particular to a method for atmospheric pressure oxygen leaching of zinc sulfide concentrate and sulfur recovery from slag. The method comprises the following steps: grinding the zinc sulfide concentrate to a target particle size; adding sulfuric acid and a leaching agent to the zinc sulfide concentrate to obtain a first reaction system, and performing low-acid first-stage atmospheric pressure oxygen leaching on the first reaction system to obtain a first-stage atmospheric pressure oxygen leaching solution and a first-stage atmospheric pressure oxygen leaching residue; the redox potential of the first reaction system is 280-380 mV; adding waste electrolyte to the first-stage atmospheric pressure oxygen leaching residue to obtain a second reaction system, and performing high-acid second-stage atmospheric pressure oxygen leaching on the second reaction system to obtain a second-stage atmospheric pressure oxygen leaching solution and a second-stage atmospheric pressure oxygen leaching residue; the redox potential of the second reaction system is 350-450 mV; adding water to the second-stage atmospheric pressure oxygen leaching residue to obtain a slurry; performing sulfur transformation treatment on the slurry to obtain a transformed residue; and recovering sulfur from the residue. The present application can improve the direct recovery rate of sulfur recovery at low cost and low energy consumption.

A process for producing nitric acid by the Ostwald process involves reacting ammonia with atmospheric oxygen as primary air to afford a NOx-containing gas stream in an ammonia oxidation reactor at a first pressure and absorbing the NOx-containing gas stream in water in an absorption apparatus at a higher, second pressure. Nitric acid is bleached with bleach air as secondary air at approximately the first pressure. The secondary air is brought to an operating pressure of the bleaching operation via a separate secondary air compressor or compressor stage. The separate secondary air compressor is independent of the compressor that brings the primary air to the first pressure. Compression to the second higher pressure at which the absorption of the NOx gases is performed in the absorption apparatus is provided only downstream of the bleaching operation.

The invention relates to a method for removing atmospheric oxygen from a granular adsorber material (1) enriched with carbon dioxide, in particular in a DAC system (100; 100a), wherein the atmospheric oxygen is displaced from the adsorber material (1) by a medium that displaces the atmospheric oxygen.

The invention relates to a method for manufacturing a photonic substrate (1) comprising the preparation of a base substrate having a dielectric thickness (3') on and in contact with a trapping layer (4) and an interlayer made of an oxidizable material on and in contact with the dielectric thickness (3''). The method also comprises transferring an electro-optical layer (2) onto the interlayer to form an intermediate substrate. According to the invention, the intermediate substrate is thermally treated in an atmosphere containing oxygen at a temperature and for a duration sufficient to allow the diffusion of atmospheric oxygen through the electro-optical layer (2) and to allow the complete oxidation of the interlayer. Figure 1

Apparatus (1) for the aerobic microbiological heating of free-flowing moist organic solids for carrying out a process for the aerobic microbiological heating of free-flowing moist organic solids, preferably of partially dewatered slurry, comprising the steps: - Loading the solid into a drum (2), - Rotating the drum (2) about a rotational axis (3) and simultaneously conveying the solid material in the drum (2), and - Introducing oxygen, in particular atmospheric oxygen, into the solid via at least one perforated tube (15), wherein the at least one perforated tube (15) extends in the drum (2) and rotates with the drum (2), - wherein with each revolution of the drum (2) at least one perforated tube (15) is immersed in the solid and transported back out of the solid, - wherein at least one perforated tube (15) is blown into and the air is extracted from the drum (2), and - wherein by means of a control device (35) the amount of air blown in and / or the amount of air extracted is changed depending on the rotational position of the drum (2) and / or the pressure in the drum (2) and / or the amount of air conveyed, the device comprises: - the rotatably arranged drum (2), wherein the drum (2) has a rotational axis (3), - a feed device (8) on the drum (2) for feeding the solid material, - a discharge device (9) on the drum (2) for discharging the solid material, - a first fan (12) for extracting air from the drum (2) and at least a second fan (24) for blowing air into the at least one perforated tube (15), - the at least one perforated tube (15) for introducing oxygen, in particular atmospheric oxygen, into the solid, wherein the at least one perforated tube (15) extends in the drum (2) and is rotationally fixed to the drum (2), wherein the at least one perforated tube (15) is arranged eccentrically in the drum (2), i.e. at a distance from the axis of rotation (3), - an air inlet (22) on a fixed end face of the drum (2), and - the control device (35) for changing the amount of air blown in and / or the amount of air extracted depending on the rotational position of the drum (2) and / or the pressure in the drum (2) and / or the amount of air conveyed, comprising a rotary coupling (21) for connecting the supply air connection (22) to the at least one perforated pipe (15), wherein the rotary coupling (21) comprises: ◯ a first pipe section (36) opening into the at least one perforated pipe (15) and rotating with the at least one perforated pipe (15), with a lateral first opening (47), and ◯ a fixed second pipe section (42) surrounding the first pipe section (36) with a lateral second opening (48), ◯ wherein the second pipe section (42) is connected to the fixed end face of the drum (2), ◯ wherein the air supply connection (22) opens from the outside to the second opening (48), and ◯ wherein the first opening (47) and the second opening (48) are arranged such that when the at least one perforated tube (15) is at the bottom, i.e. in the solid, the two openings (47, 48) completely overlap, and when the at least one perforated tube (15) is conveyed out of the solid, the overlap of the two openings (47, 48) decreases to a minimal overlap or no overlap, wherein the control device (35) further comprises: ◯ a detection unit (49) for detecting a rotational position of the drum (2), and / or ◯ a measuring unit (51) for measuring the amount of air blown in and / or the amount of air extracted and / or the air pressure in the drum (2) and ◯ a control unit (50) for changing the power of the first fan (12) and / or the second fan (24) depending on the detected rotational position and / or depending on the measured values ​​of the measuring unit (51).

This invention provides a method for recovering metallic copper by atmospheric pressure oxygen-enriched leaching, relating to the field of hydrometallurgy. The method includes: mixing copper sulfide concentrate with a sulfuric acid solution to obtain a mixed slurry; introducing an oxygen-rich gas under atmospheric pressure to carry out a leaching reaction; and after the reaction, separating the liquid and solid to obtain a copper-containing leachate. By using the synergistic leaching of sulfuric acid solution and oxygen-rich gas under atmospheric pressure, this method eliminates the reliance on expensive high-pressure equipment, removes the safety hazards of high-pressure explosions, and significantly reduces equipment corrosion and investment costs. Using oxygen as a highly efficient oxidant, this method significantly shortens the extraction cycle, overcomes the drawbacks of time-consuming bioleaching and the generation of waste, and achieves efficient, safe, and low-cost extraction of metallic copper from copper sulfide concentrate.

The present invention refers to a precoated hard-shell capsule with at least one coating layer, suitable as container with an improved protective effect against atmospheric oxygen for pharmaceutical or nutraceutical biologically active ingredients and to a method for preparing a pharmaceutical delivering system comprising a hard-shell capsule and a fill, the fill comprising a pharmaceutically or nutraceutically active ingredient.

The invention relates to a method for removing atmospheric oxygen from a granular adsorber material (1) enriched with carbon dioxide, in particular in a DAC system (100; 100a), wherein the atmospheric oxygen is displaced from the adsorber material (1) by a medium that displaces the atmospheric oxygen.

The invention provides an atmospheric oxidation source analysis and regulation method, device and equipment, and belongs to the field of atmospheric pollution. The method comprises the steps that the pollutant concentration of air in a target area is obtained; an atmospheric chemical reaction process is simulated through the box model, and an atmospheric oxidability calculation path is determined; constructing a species concentration matrix of pollutants, and determining the category of an emission source and the contribution degree of the emission source to the concentration of a precursor; the atmospheric oxidizability calculation path, the emission source category and the contribution degree to the precursor concentration are associated, and the atmospheric oxidizability source and the contribution degree are determined; setting a gradient emission reduction proportion combination and performing simulation according to an atmospheric oxidizability source; and taking the simulation mode reaching the preset standard in the simulation result as the optimal regulation and control mode. The technical path not only improves the accuracy of quantitative characterization of the atmospheric oxidability, but also provides a scientific basis for cooperative control of primary pollutant emission and inhibition of secondary pollution.

The invention relates to a method for removing atmospheric oxygen from a granular adsorber material (1) enriched with carbon dioxide, in particular in a DAC plant (100; 100a), in which the atmospheric oxygen is displaced from the adsorber material (1) by a medium displacing the atmospheric oxygen.

The present invention relates to a method for oxidizing beta-caryophyllene with oxygen, in particular atmospheric oxygen, which avoids the use of catalysts, enzymes and solvents. Furthermore, the present invention provides a mixture comprising certain caryophyllene oxides as well as their use as a flavor and / or fragrance. The present invention also relates to products and semi-finished products comprising the mixture according to the invention.