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  2. Vaillant Group - Wikipedia

    en.wikipedia.org/wiki/Vaillant_Group

    The history of the Vaillant Group dates back to 1874, when Johann Vaillant set up a master fitter's business. In 1894 Johann Vaillant patented a new "closed-system" gas-fired bathroom boiler. [3] This was the first device that made it possible to heat water hygienically, without contaminating it with combustion gases.

  3. ASME Boiler and Pressure Vessel Code - Wikipedia

    en.wikipedia.org/wiki/ASME_Boiler_and_Pressure...

    This committee put in the form work for the first edition of the ASME Boiler Code - Rules for the Construction of Stationary Boilers and for the Allowable Working Pressures, which was issued in 1914 and published in 1915. [5] The first edition of the Boiler and Pressure Vessel Code, known as the 1914 edition, was a single 114-page volume.

  4. Selective non-catalytic reduction - Wikipedia

    en.wikipedia.org/wiki/Selective_non-catalytic...

    Selective non-catalytic reduction (SNCR) is a method to lessen nitrogen oxide emissions in conventional power plants that burn biomass, waste and coal.The process involves injecting either ammonia or urea into the firebox of the boiler at a location where the flue gas is between 1,400 and 2,000 °F (760 and 1,090 °C) to react with the nitrogen oxides formed in the combustion process.

  5. Deaerator - Wikipedia

    en.wikipedia.org/wiki/Deaerator

    Between 1921 and 1933, George Gibson, Percy Lyon, and Victor Rohlin of Cochrane received deaerator / degasification patents for bubbling steam through liquid. [14] [15] [16] 1926 Brown Stanley received a patent for reducing oxygen and nitrogen gases (deaeration). [17] In 1937 Samuel B Applebaum of Permutit received a water deaerator and ...

  6. Boiler blowdown - Wikipedia

    en.wikipedia.org/wiki/Boiler_blowdown

    A steam boiler evaporates liquid water to form steam, or gaseous water, and requires frequent replenishment of boiler feedwater for the continuous production of steam required by most boiler applications. Water is a capable solvent, and will dissolve small amounts of solids from piping and containers including the boiler.

  7. Purging (gas) - Wikipedia

    en.wikipedia.org/wiki/Purging_(gas)

    Nitrogen and carbon dioxide are unsuitable purge gases in some applications, as these gases may undergo chemical reaction with fine dusts of certain light metals. Because an inert purge gas is used, the purge procedure may (erroneously) be referred to as inerting in everyday language.

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