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Ammonia Synthesis at Low Pressure
Published on: August 23, 2017
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氨/和破裂氨的燃烧方式
Giovani Battista Ariemma1, Giancarlo Sorrentino1, Mara de Joannon1
1Institute of Sciences and Technologies for Sustainable Energy and Mobility (STEMS-CNR), Naples 80125, Italy.
概括
中度或强度的低氧稀释 (MILD) 燃烧改善了氨燃料的燃烧. 添加能增强了氨的反应性,但增加了氧化物排放,而N2在裂氨混合物中的稀释可以限制氧化物形成.
科学领域:
- 燃烧科学是一种科学.
- 能源系统 能源系统
- 脱碳化技术的使用.
背景情况:
- 氨 (NH3) 是一个有前途的无碳能源载体,但其燃烧带来了挑战.
- 中度或强度低氧稀释 (MILD) 燃烧和 (H2) 添加是提高NH3燃烧效率和减少排放的策略.
- 部分裂解NH3产生H2,为增强燃料反应性提供了潜在的途径.
研究的目的:
- 为了研究MILD燃烧对NH3/H2混合物在旋风反应堆中的有效性.
- 分析等效比率和H2添加对燃烧稳定性和NOx排放的影响.
- 为了比较纯NH3,纯H2和破裂NH3混合物 (NH3/H2/N2) 的燃烧行为.
主要方法:
- 在MILD条件下,在旋风反应堆中对NH3 / H2混合物的实验研究.
- 对等比率和H2添加百分比的系统变化.
- 与破裂的NH3混合物 (NH3/H2/N2) 的结果进行直接比较.
主要成果:
- 旋风反应堆证明了燃料灵活性,在低于1400 K的温度下实现NH3 / H2混合物的总转换.
- 添加H2增加了NH3的反应性,但与纯NH3相比,它也导致了更高的NOx排放.
- 对于破裂的NH3混合物,N2稀释在MILD条件下没有显著改变燃烧行为,除了75%H2-25%N2混合物外,它促进了更均的反应区和有限的NOx形成.
结论:
- 旋风反应堆中的MILD燃烧对于NH3/H2混合物的稳定和低排放燃烧是有效的.
- 添加H2提高了反应能力,但需要谨慎管理以控制NOx排放.
- 在破裂的NH3混合物中稀释N2可以通过确保更均的反应区来进一步减轻NOx形成的可行策略.
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