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相关概念视频

Bioreactor Controls-II01:18

Bioreactor Controls-II

57
In aerobic fermentations, oxygen is vital for microbial growth and metabolite production. Since air comprises only about 20% oxygen and the gas is poorly soluble in water—just 9 ppm at 20°C—supplying sufficient oxygen becomes a critical challenge, especially in high-demand processes like yeast growth or citric acid production. Even a fully saturated broth may offer only a few seconds of oxygen availability.To address this, sterile or scrubbed air is introduced into the...
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相关实验视频

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Evaluation of Integrated Anaerobic Digestion and Hydrothermal Carbonization for Bioenergy Production
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生物质多阶段碎片化用于带流气化工艺的生物质.

Yunfei Yang1, Xiaolei Guo1, Haifeng Lu1

  • 1Shanghai Engineering Research Center of Coal Gasification, East China University of Science and Technology, Shanghai 200237, PR China.

Bioresource technology
|April 14, 2025
PubMed
概括

多阶段的碎片化减少了生物质气化所需的能源消耗. 对于玉米和梅花,双阶段磨粉更有效,但对于moso竹,由于其坚固的纤维,效率较低.

科学领域:

  • 生物质能源转换生物质能源转换
  • 可持续的能源技术 可持续的能源技术
  • 减少颗粒大小的减少

背景情况:

  • 引流气化为将生物质转化为能源提供了一种清洁高效的方法.
  • 粉碎或缩小尺寸是生物质为气化准备过程中至关重要的,但也是能源密集的步骤.
  • 优化压缩是提高生物质气化经济可行性的关键.

研究的目的:

  • 为了评估不同类型的生物质的多阶段粉碎的能源消耗.
  • 为了确定与单阶段削相比,两阶段削在减少生物质颗粒大小方面的有效性.
  • 为经济生物质气化确定最佳的碎片化策略.

主要方法:

  • 调查了玉米炉,梅花树枝和moso竹的单阶段与两阶段削的能源消耗.
  • 对于所有生物质样本,使用了1毫米的目标屏幕大小.
  • 分析了能量消耗和得到的粒子大小分布之间的关系.

主要成果:

  • 与单阶段削相比,双阶段削使玉米炉的能源消耗降低了27.98%,花莲树枝的能源消耗降低了16.84%.
  • 由于其纤维结构需要更多的能量进行分离和破碎,Moso竹的能量减少率较低,为8.59%.
  • 莫索竹的更高的能量投入与克服其坚固的纤维结构有关.
关键词:
生物质是生物质的.能源消耗 能源消耗是指能源的消耗.引流式气化过程中的排气流量.多个阶段的碎片化.颗粒大小 颗粒大小

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结论:

  • 多阶段的碎片化策略可以显著降低准备生物质的能源需求,如玉米和梅花.
  • 多阶段碎片化的效率因生物质类型而异,像moso竹这样的纤维材料带来了独特的挑战.
  • 对能源消耗和颗粒大小的分析对于选择适当的子机运行参数来实现高效的生物质气化至关重要.