Oxy-fuel Combustion and Clean Coal Technologies

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  • Oxy-fuel combustionとクリーンコールテクノロジー～CO<sub>2</sub>回収型新燃焼技術の展開～
  • Oxy-fuel combustionとクリーンコールテクノロジー : CO₂回収型新燃焼技術の展開
  • Oxy-fuel combustion ト クリーンコールテクノロジー : CO ₂ カイシュウガタ シン ネンショウ ギジュツ ノ テンカイ

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Abstract

<p>The competitiveness of coal relies on its wide availability and stability in supply and cost. Coal contributes to 39 % of worldwide electricity generation and plays an important role in global energy supply. For coal to serve as a source of the global energy supply, the greenhouse gases that are emitted from its utilization must be reduced. Oxy-fuel combustion technology is an emerging approach to capture post combustion CO2. In this technique, coal is burned using a mixture of high-purity oxygen and recycled flue gas. Oxy-fuel combustion has some other advantages over conventional coal-air combustion, such as lower NOx and unburnt hydrocarbon emissions as well as easier CO2 removal. Char gasification in mixtures of O2 and CO2 is also discussed in this paper. A sufficient active site, mainly consisting of catalyst in this study, was important not only to enhance char gasification reactions but also to prevent competitive reactions between char-O2 and CO2 gasification.</p>

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