Effects of Plasma Injection on Stability and Nitrogen Oxide Formation in Combustion of Pulverized Coal

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  • 微粉炭燃焼における燃焼安定および窒素酸化物生成に対するプラズマ吹き込みの効果
  • ビフンタン ネンショウ ニ オケル ネンショウ アンテイ オヨビ チッソ サン

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Abstract

The feasibility of the use of a plasma jet was studied for the ignition of pulverized coal combustion and suppression of nitrogen oxide formation. The analyses of the product gases under various experimental conditions led to the following results:<BR>(1) By the assistance of plasma injection, pulverized coal can be ignited without any addition of auxiliary oil or gas. The proportion of plasma energy necessary to maintain stable combustion does not exceed several percentages of heat input of the coal.<BR>(2) Suppression of nitrogen oxide formation can be expected even in the range of high combustion efficiency, if the plasma assisted burner is appropriately designed. Nitrogen plasma plays an important roll to reduce the nitrogen oxide.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 79 (6), 638-644, 1993

    The Iron and Steel Institute of Japan

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