Abstract This study aims to examine the effect of an online lime separation system with the semi-dry scrubber and dry lime injection system in a refuse incineration plant. Fine powder was used to prepare different concentrations of lime slurry to remove four combinations of boiler outlet acid gas. Results show that the lime separation can reduce the particle size (D90) of the hydrated lime from 31 to15 μm. The removal rate of HCl and SO2 remains over 98% and 90%, respectively. If the SO2 concentration in the gas is maintained below 200 mg/Nm3 via judicious refuse mixing, the consumption of lime will be most economical. Herein, the payback period of the facility will be approximately three years, and the online lime separation system can enhance the quality of hydrated lime, improve the emissions quality, reduce the consumption of lime, and achieve economic benefits.

中文翻译：

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垃圾焚烧厂石灰在线分离系统性能分析

摘要 本研究旨在检验在垃圾焚烧厂中采用半干式洗涤器和干石灰喷射系统的在线石灰分离系统的效果。用细粉配制不同浓度的石灰浆，去除锅炉出口酸气的四种组合。结果表明，石灰分离可以将熟石灰的粒径 (D90) 从 31 μm 降低到 15 μm。HCl和SO2的去除率分别保持在98%和90%以上。如果通过明智的垃圾混合将气体中的 SO2 浓度保持在 200 mg/Nm3 以下，那么石灰的消耗将是最经济的。在这里，该设施的投资回收期约为三年，在线石灰分离系统可以提高熟石灰质量，改善排放质量，减少石灰消耗，