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硫和灰含量高的低级煤在总的采煤量中所占的比重将增大。这些煤如在普通的煤粉锅炉内燃尽,要在燃料的预制备以及随之而来的烟气净化上花费大量额外的开支。因此,特别是在最近几年里,沸腾床燃煤技术正被认为是一项颇有前途的技术。应用这一技术不仅可有效地燃尽劣质煤(高灰份,低热值或低反应性的煤),而且由于向煤中加入合适的吸附剂,可使二氧化硫的排放量锐
The proportion of low-grade coal with high sulfur and ash content will increase in the total coal consumption. When the coal is burned out in ordinary pulverized coal boilers, it takes a large extra cost to prepare the fuel and consequent flue gas purification. Therefore, ebullated bed coal-fired technology is being considered as a promising technology, especially in recent years. Application of this technology can not only effectively burn low quality coal (high ash, low calorific value or low reactivity coal), but also because of the coal to add a suitable adsorbent, the sulfur dioxide emissions can be sharp