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  2. Liquid nitrogen - Wikipedia

    en.wikipedia.org/wiki/Liquid_nitrogen

    Liquid nitrogen is a compact and readily transported source of dry nitrogen gas, as it does not require pressurization. Further, its ability to maintain temperatures far below the freezing point of water, specific heat of 1040 J ⋅kg -1 ⋅K -1 and heat of vaporization of 200 kJ⋅kg -1 makes it extremely useful in a wide range of applications ...

  3. Liquefaction of gases - Wikipedia

    en.wikipedia.org/wiki/Liquefaction_of_gases

    Liquid nitrogen Liquefaction of gases is physical conversion of a gas into a liquid state ( condensation ). The liquefaction of gases is a complicated process that uses various compressions and expansions to achieve high pressures and very low temperatures, using, for example, turboexpanders .

  4. Matheson (compressed gas & equipment) - Wikipedia

    en.wikipedia.org/wiki/Matheson_(compressed_gas...

    Matheson Tri-Gas, Inc. produces industrial, medical, and specialty gases, and associated gas handling equipment, in North America.MATHESON offers semiconductor, medical, welding, atmospheric gases, rare gases delivered via pipelines, onsite generators, bulk tanks, and in gas cylinders to customers using gases in their labs, semiconductor fabs, hospitals, chemical plants, manufacturing and many ...

  5. List of corporations in Pittsburgh - Wikipedia

    en.wikipedia.org/wiki/List_of_corporations_in...

    There are nine Fortune 500 companies headquartered in the Pittsburgh metropolitan area. [1] 120 PNC Financial Services (financial) 220 PPG Industries (industrial) 226 Howmet Aerospace (industrial) 245 Wesco International (industrial) 254 Viatris (pharmaceuticals) 310 U.S. Steel (industrial) 330 Alcoa (metals/mining) 362 Dick's Sporting Goods ...

  6. EQT Corporation - Wikipedia

    en.wikipedia.org/wiki/EQT_Corporation

    EQT Corporation is an American energy company engaged in hydrocarbon exploration and pipeline transport.It is headquartered in EQT Plaza in Pittsburgh, Pennsylvania.. EQT is the largest natural gas producer in the Appalachian Basin [2] with 19.802 trillion cubic feet equivalent of proved reserves across approximately 1.8 million gross acres, including approximately 1.5 million gross acres in ...

  7. Liquefaction - Wikipedia

    en.wikipedia.org/wiki/Liquefaction

    As an example of the latter, a "major commercial application of liquefaction is the liquefaction of air to allow separation of the constituents, such as oxygen, nitrogen, and the noble gases." [4] Another is the conversion of solid coal into a liquid form usable as a substitute for liquid fuels. [5]

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    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

  9. Nitrogen generator - Wikipedia

    en.wikipedia.org/wiki/Nitrogen_generator

    Environmental impact: Generating nitrogen gas by PSA is a sustainable, environmentally friendly and energy efficient approach to providing pure, clean, dry nitrogen gas. Compared to the energy needed for a cryogenic air separation plant and the energy needed to transport the liquid nitrogen from the plant to the facility, generated nitrogen ...

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