在固定床下游潮配置下,气化过程的稳定和过渡状态行为
Oscar M Carmona1, Arnaldo Vederza2, Andrés D Morales R1
1Grupo de Investigación e Innovación en Energía (GIIEN), Institución Universitaria Pascual Bravo, Calle 73 No. 73 - 226, Medellín, 050034, Colombia.
Heliyon
|August 20, 2024
概括
这项研究分析了大米气化过程中的动态变化. 增加的空气流改善了气体质量,但水分含量对工艺稳定性影响最小.
科学领域:
- 生物质能源转换生物质能源转换
- 热化学过程 热化学过程
- 化学工程是化学工程的组成部分.
背景情况:
- 气化是一种关键的生物质能源转换技术.
- 由于原料和代理变化的动态过程变化需要更深入的分析.
- 了解过程动态对于优化生物质能源系统至关重要.
研究的目的:
- 在不同的水分含量和空气流量下,动态描述大米气化.
- 为了确定过程稳定性条件和干扰响应.
- 评估动态变化对气体质量和效率的影响.
主要方法:
- 在稳定状态测试中使用了3 ^ 2因子设计.
- 引入了大米的水分含量和空气流量的阶段性变化.
- 监控过程变量,包括气体度,温度和输出功率.
主要成果:
- 气化在氧气有限的区域运行,增加了气流增强气体的低加热值 (LHV) 到2.6MJ/Nm3和冷气效率 (CGE) 到62%.
- 由于反应堆的热惯性,生物质水分含量显示影响微不足道.
- 在空气干扰后,度稳定需要1200s左右,而天然气功率稳定需要300s左右.
结论:
- 空气流显著影响气化性能,将其驱动到最佳燃烧区.
- 生物质含水量变化对动态气化过程的影响有限.
- 干扰后的过程恢复时间是可变的,气体组成是稳定最慢的.
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