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首页> 外文期刊>Journal of Solid Waste Technology and Management >CARBONATION OF FBC ASHES USING SONIC ENERGY
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CARBONATION OF FBC ASHES USING SONIC ENERGY

机译：利用声能对FBC灰进行碳化

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Fluidized bed combustion (FBC) ashes from firing high-sulfur fuels with limestone addition contain elevated levels of CaO. The ashes display exothermic behavior on wetting, are subject to deleterious expansion in the landfill, and produce high-pH leachate that requires treatment. Currently, the ashes are slaked in a relatively ineffective and potentially hazardous two-stage wetting procedure. Sonic energy, both low- and high-frequency, is a highly effective method of hydrating these ashes. However, even upon hydration, FBC ashes still create expansion in the landfill site, and produce a high-pH leachate. Carbonation would be a better route, but direct attempts at quantitatively carbonating these ashes have to date been unsuccessful. By contrast sonic energy is effective in promoting the carbonation of FBC ashes. When CO_2 is injected into the chamber where the FBC ashes are being sonically hydrated, near-quantitative carbonation in minutes is possible.
机译：燃烧添加石灰石的高硫燃料所产生的流化床燃烧（FBC）灰分含有较高的CaO。骨灰在润湿时表现出放热行为，在垃圾填埋场中会受到有害膨胀，并产生需要处理的高pH渗滤液。目前，骨灰以相对无效且具有潜在危险的两阶段润湿程序进行熟化。低频和高频声波能量都是将这些灰分水化的高效方法。但是，即使水合，FBC灰仍会在垃圾填埋场中膨胀，并产生高pH值的渗滤液。碳化将是更好的途径，但是迄今为止，对这些灰进行定量碳化的直接尝试尚未成功。相反，声能可有效促进FBC骨灰的碳化。当将CO_2注入FBC灰分被超声水化的腔室中时，几分钟内可能发生近乎定量的碳酸化。

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