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  2. Air separation - Wikipedia

    en.wikipedia.org/wiki/Air_separation

    An air separation plant separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases. The most common method for air separation is fractional distillation. Cryogenic air separation units (ASUs) are built to provide nitrogen or oxygen and often co-produce argon.

  3. Flue-gas desulfurization - Wikipedia

    en.wikipedia.org/wiki/Flue-gas_desulfurization

    Flue-gas desulfurization (FGD) is a set of technologies used to remove sulfur dioxide (SO 2) from exhaust flue gases of fossil-fuel power plants, and from the emissions of other sulfur oxide emitting processes such as waste incineration, petroleum refineries, cement and lime kilns.

  4. Membrane gas separation - Wikipedia

    en.wikipedia.org/wiki/Membrane_gas_separation

    The membrane gas separation equipment typically pumps gas into the membrane module and the targeted gases are separated based on difference in diffusivity and solubility. For example, oxygen will be separated from the ambient air and collected at the upstream side, and nitrogen at the downstream side.

  5. Air purge system - Wikipedia

    en.wikipedia.org/wiki/Air_purge_system

    At the air inlet, air temperature must be lower than the upper ambient rating of the fan (typically 50 °C/122 °F). The position of air intake is at a point where the least amount of dust, oil, and moisture collects. Fail safe shutters protect the instrument if the purge air supply fails. These are key in systems where the flue gas is under ...

  6. Scrubber - Wikipedia

    en.wikipedia.org/wiki/Scrubber

    Acid gases are absorbed by the slurry mixture and react to form solid salts which are removed by the particulate control device. The heat of the flue gas is used to evaporate all the water droplets, leaving a non-saturated flue gas to exit the absorber tower. Spray dryers are capable of achieving high (80+%) acid gas removal efficiencies.

  7. US shuts Kyiv embassy due to 'potential significant air attack'

    www.aol.com/news/us-embassy-kyiv-shuts-down...

    KYIV (Reuters) -The United States shut its embassy in Kyiv on Wednesday due to "specific information of a potential significant air attack" and told its citizens in Ukraine to be ready to swiftly ...

  8. Flue-gas stack - Wikipedia

    en.wikipedia.org/wiki/Flue-gas_stack

    A flue gas stack at GRES-2 Power Station in Ekibastuz, Kazakhstan, the tallest of its kind in the world (420 meters or 1,380 feet) [1]. A flue-gas stack, also known as a smoke stack, chimney stack or simply as a stack, is a type of chimney, a vertical pipe, channel or similar structure through which combustion product gases called flue gases are exhausted to the outside air.

  9. Homeowners have nearly 40x the wealth of renters. But what's ...

    www.aol.com/homeowners-nearly-40x-wealth-renters...

    Renters at all income levels save less and have recently started cutting back on their spending due to the high cost of food, gas, energy, housing, and more.