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  • ultra-low-emission steam boiler constituted of reciprocal flow porous burner

    جزئیات بیشتر مقاله
    • تاریخ ارائه: 1392/07/24
    • تاریخ انتشار در تی پی بین: 1392/07/24
    • تعداد بازدید: 870
    • تعداد پرسش و پاسخ ها: 0
    • شماره تماس دبیرخانه رویداد: -
     this experimental study examined a low-emission steam boiler in which the filtration combustion technology was employed. this new boiler concept is consisted of a reciprocal flow porous burner, in which a combustion wave propagates along the reactor length. the boiler’s burner is filled up by an inert porous material, which leads to a stable burning of ultra-lean fuel/air mixtures, operating below flammability limits of conventional burners. in reciprocal filtration combustion, the reaction zone travels back and forth along the length of the burner, maintaining a typical trapezoidal temperature distribution favorable to the energy extraction. embedding heat exchangers into the ends of the porous bed results in an alternative low-emission high-efficiency boiler. the heat re-circulation inside the porous matrix and the low degree of thermal non-equilibrium between the gas and the solid phases result in ultra-low levels of co and nox. over an equivalence ratio range from 0.20 to 1.0 and a gas flow velocity range from 0.2 to 0.6 m/s, burning the technical methane, the developed prototype has reached efficiencies superior to 90% and nox and co emission levels lower than 1.0 and 0.5 ppm, respectively.

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