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  2. Oxygen scavenger - Wikipedia

    en.wikipedia.org/wiki/Oxygen_scavenger

    As oxygen is consumed to form iron oxide the level of oxygen in the surrounding atmosphere is reduced. Absorber technology of this type may reduce the oxygen level in the surrounding atmosphere to below 0.01%. [2] [3] Complete oxidation of 1 g of iron can remove 300 cm 3 of oxygen in standard conditions.

  3. Pressure swing adsorption - Wikipedia

    en.wikipedia.org/wiki/Pressure_swing_adsorption

    Capacities of such units are given in Nm 3 /h, normal cubic meters per hour, one Nm 3 /h being equivalent to 1000 liters per hour under any of several standard conditions of temperature, pressure, and humidity. for nitrogen: from 100 Nm 3 /h at 99.9% purity, to 9000 Nm 3 /h at 97% purity; for oxygen: up to 1500 Nm 3 /h with a purity between 88% ...

  4. Air separation - Wikipedia

    en.wikipedia.org/wiki/Air_separation

    A nitrogen generator Bottle of 4Å molecular sieves. Pressure swing adsorption provides separation of oxygen or nitrogen from air without liquefaction. The process operates around ambient temperature; a zeolite (molecular sponge) is exposed to high pressure air, then the air is released and an adsorbed film of the desired gas is released.

  5. Deaerator - Wikipedia

    en.wikipedia.org/wiki/Deaerator

    Most lower pressure systems (lower than 650 psi (4,500 kPa)) use non-volatile treatment programs. The most commonly used oxygen scavenger for lower pressure systems is sodium sulfite (Na 2 SO 3). It is very effective and rapidly reacts with traces of oxygen to form sodium sulfate (Na 2 SO 4) which is non-scaling. Most higher pressure systems ...

  6. Scavenger (chemistry) - Wikipedia

    en.wikipedia.org/wiki/Scavenger_(chemistry)

    Their use is wide-ranged: In atmospheric chemistry , the most common scavenger is the hydroxyl radical , a short-lived radical produced photolytically in the atmosphere. It is the most important oxidant for carbon monoxide , methane and other hydrocarbons , sulfur dioxide , hydrogen sulfide , and most of other contaminants, removing them from ...

  7. Oxygen concentrator - Wikipedia

    en.wikipedia.org/wiki/Oxygen_concentrator

    An oxygen concentrator takes in air and removes nitrogen from it, leaving an oxygen-enriched gas for use by people requiring medical oxygen due to low oxygen levels in their blood. [4] Oxygen concentrators provide an economical source of oxygen in industrial processes, where they are also known as oxygen gas generators or oxygen generation plants.

  8. Boiler feedwater - Wikipedia

    en.wikipedia.org/wiki/Boiler_feedwater

    Residual amounts can be removed chemically, by use of oxygen scavengers. Additionally, feed water is typically alkalized to a pH of 9.0 or higher, to reduce oxidation and to support the formation of a stable layer of magnetite on the water-side surface of the boiler, protecting the material underneath from further corrosion.

  9. Orsat gas analyser - Wikipedia

    en.wikipedia.org/wiki/Orsat_gas_analyser

    An Orsat gas analyser or Orsat apparatus is a piece of laboratory equipment used to analyse a gas sample (typically fossil fuel flue gas) for its oxygen, carbon monoxide and carbon dioxide content. Although largely replaced by instrumental techniques, the Orsat remains a reliable method of measurement and is relatively simple to use. [1]