在浮动技术中,预时间对从煤灰中去除碳的影响
Ke Liu1,2, Jinming Jiang1,2, Koji Takasu1,2
1Faculty of Environmental Engineering, The University of Kitakyushu, 1-1 Hibikino Wakamatsu, Kitakyushu, Fukuoka 8080135, Japan.
ACS omega
|August 7, 2023
概括
优化煤炭飞灰 (CFA) 漂浮需要仔细的预. 3分钟的预时间显著提高了未燃烧的碳的去除,改善了CFA资源的回收利用,并降低了工业成本.
科学领域:
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 煤炭飞灰 (CFA) 是一个主要的工业副产品,其未燃烧的碳含量限制了其利用.
- 有效地分离未燃烧的碳对于最大限度地利用CFA的潜在应用至关重要.
- 漂浮技术为碳分离提供了一种可行的方法,预时间是关键参数.
研究的目的:
- 调查不同预时间对煤炭飞灰漂浮性能的影响.
- 为了确定最佳的预时间,以有效地去除未燃烧的碳.
- 提供支持提高效率和节省工业CFA回收成本的数据.
主要方法:
- 选择了8次预时间 (0-7分钟) 用于煤炭飞灰 (CFA) 漂浮.
- 使用点火损失 (LOI),未燃碳去除率 (RUC),接触角度和颗粒大小分布评估漂浮结果.
- 分析了预持续时间对这些关键绩效指标的影响.
主要成果:
- 预时间显著影响CFA漂浮,影响LOI,接触角度和颗粒细度.
- 增加预时间最初降低了LOI和增加了接触角度,在3分钟内观察到最佳的碳去除.
- 3分钟的预时间产生了最好的结果:0.96%的LOI,74.56%的收益率,72.70%的RUC和36.65%的罚款 (<45μm).
结论:
- 预时间是优化煤炭飞灰漂浮的关键因素.
- 3分钟的预时间被认为是最大限度地减少未燃烧的碳的最佳时间.
- 这些发现支持提高效率,降低浮动成本,并在工业环境中改善CFA资源回收.
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