煤炭自发燃烧的抑制效应由基于CaCl的复合抑制泡2-黑色素抑制剂
Hong Zhang1, Zongquan Zhao1, Zihan Wang1
1College of Safety Science and Engineering, Anhui University of Science and Technology, Huainan, Anhui 232001, P R China.
ACS omega
|March 25, 2024
概括
结合化 (CaCl2) 和黑激素 (MLT) 的新复合抑制剂显著增强了泡稳定性和煤炭自燃抑制. 这种先进的泡减少了63.2%的二氧化碳释放,并延迟了分解.
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.
- 采矿工程 采矿工程 采矿工程
背景情况:
- 煤炭自燃带来了重大的安全和经济风险.
- 现有的抑制泡往往缺乏足够的稳定性和长期有效性.
- 开发先进的抑制剂对于提高煤炭安全至关重要.
研究的目的:
- 开发一种新的物理化学复合抑制剂,用于增强煤炭自燃抑制.
- 为了提高抑制泡的稳定性和抑制性能.
- 为了研究化 (CaCl2) 和黑色素 (MLT) 在复合抑制剂中的协同作用.
主要方法:
- 使用CaCl2 (物理抑制剂) 和黑色素 (MLT) (化学抑制剂) 制备了一种复合抑制剂.
- 确定了CaCl2与MLT的最佳质量比.
- 评估了泡的稳定性,湿化能力和抑制性能.
- 用复合抑制剂处理的煤炭被测试了CO释放和热分解特征.
主要成果:
- 复合抑制剂显著改善了泡的稳定性,泡的半衰期比水性泡长5.89倍.
- CaCl2与MLT的最佳 4:1质量比导致CO释放量最低 (在200°C时为7337.06 ppm).
- 与200°C的原煤相比,复合抑制泡减少了63.2%的二氧化碳释放.
- 它还延迟了特征温度的出现,并减少了12.8%的分解重量变化.
结论:
- 该CaCl2-MLT复合抑制剂提供卓越的泡稳定性,湿能力和煤炭自燃抑制性能.
- 这种新型抑制剂为减轻煤炭自燃风险提供了有效的解决方案.
- 这些发现突显了物理化学复合抑制剂在提高煤炭安全和管理方面的潜力.
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