典型的农业生物质在形状特征和燃烧过程中NO排放方面进行机械预处理
Yutong Feng1, Jiangang Huang2, Jinzhi Zhang3
1Key Laboratory of Biofuels, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, 189 Songling Road, Qingdao 266101, China; University of Chinese Academy of Sciences, Beijing 100049, China; Shandong Energy Institute, 189 Songling Road, Qingdao 266101, China; Qingdao New Energy Shandong Laboratory, 189 Songling Road, Qingdao 266101, China.
Bioresource technology
|February 22, 2024
概括
玉米 (CS),豆 (PS) 和小麦 (WS) 的机械预处理会影响燃烧过程中的颗粒大小和NO排放. 小麦碎成更小的颗粒,影响整个燃烧阶段的释和NO度.
科学领域:
- 生物质能源研究生物质能源研究
- 燃烧科学是一种科学.
- 环境工程环境工程
背景情况:
- 像玉米 (CS),豆 (PS) 和小麦 (WS) 这样的农业残留物是丰富的生物质资源.
- 了解这些材料的燃烧行为对于高效的能源利用和排放控制至关重要.
- 机械预处理可以改变生物质的特性,可能会影响燃烧特性和污染物形成.
研究的目的:
- 研究机械预处理对CS,PS和WS粒子形状特征的影响.
- 分析颗粒大小和类型对 (N) 功能以及燃烧过程中随后的NO排放的影响.
- 为了比较预处理的CS,PS和WS的燃烧行为和NO排放概况.
主要方法:
- 机械预处理应用于CS,PS和WS.
- 粒子大小分布和形状因子的特征是使用ImageJ.
- 使用热重量测量质谱仪 (TG-MS) 和固定床反应器分析了热性能和NO排放.
- 在焦炭中的功能性在热解后被分析.
主要成果:
- 由于其中等强度,与CS和PS相比,小麦 (WS) 具有更高的分裂成较小颗粒的倾向.
- 氨基N在热解过程中被完全消除,在得到的图中,pyrrolic-N和pyridinic-N被确定为主要的N功能.
- 在挥发性燃烧过程中NO度的峰值为270 ppm (CS),354 ppm (PS) 和311 ppm (WS).
- 半焦炭燃烧阶段的NO2排放显示稳定水平,随着颗粒大小的增加而增加.
- 在固定碳燃烧阶段观察到NO度急剧短暂下降.
结论:
- 机械预处理显著影响生物质吸管的颗粒大小和形状,影响其燃烧动态.
- 吸管的类型及其由此产生的颗粒大小分布是控制不同燃烧阶段NO 排放配置的关键因素.
- 了解这些关系对于优化燃烧过程和减轻生物质能源系统的氧化排放至关重要.
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