热合成气清理试点两级流化床蒸汽氧生物质气化厂的热合成气清理
Zhijie Fu1, Nazanin Charchi Aghdam1, Sahand Nekoeian1
1Department of Chemical and Biological Engineering, The University of British Columbia, Vancouver, BC N6A 5B9, Canada.
Bioresource technology
|November 28, 2024
概括
这项研究开发了一种用于生物质可再生能源的新型气化器和清洁系统. 一个以铁为基础的催化剂实现了高焦油去除,产生了用于天然气生产的更清洁的合成气.
科学领域:
- 可再生能源技术可再生能源技术
- 生物质气化生物质气化
- 辛加斯天然气净化公司
背景情况:
- 生物质气化是一种关键的可再生能源技术.
- 合成天然气中高含量仍然是经济可行性的重大挑战.
- 有效的合成气清洁对于下游应用至关重要.
研究的目的:
- 开发一种新型的两级流化床试点规模的气化器,用于低焦油合成气的生产.
- 设计,建造和测试一个原型的热合成气清洁系统.
- 为了评估内部制备的铁基催化剂的焦油去除效率.
主要方法:
- 使用两级流化床气化器进行蒸汽-氧气生物质气化.
- 采用催化焦油裂解机,使用一种基于铁的石残留衍生催化剂.
- 在678-801°C的反应温度下测试了热合成气清洁系统.
主要成果:
- 使用催化焦油裂解器,实现了82.8-98.0%的焦油去除效率.
- 减少原始合成气的焦油含量 (2.59-27.71 g/Nm3) 至0.10-0.65 g/Nm3.
- 获得的含有H2 (32.7-48.0%),CH4 (2.8-4.8%),CO (26.3-35.7%) 和CO2 (18.4-33.9%) 的合成气.
结论:
- 开发的气化器和清洁系统有效地降低了合成气中的焦油含量.
- 铁基催化剂在去除焦油中表现出高效率.
- 需要进一步的水气转移反应来优化可再生天然气生产的H2/CO比率.
相关概念视频
Bioreactor Design and Operational System
Bioreactors are engineered vessels designed to cultivate microorganisms under controlled conditions for industrial bioprocessing. They maintain sterility and allow precise regulation of pH, temperature, oxygen, and nutrient levels to optimize microbial growth and metabolite production. Bioreactors range from small laboratory units of 1 liter to industrial systems holding up to 500,000 liters, though only about 75% of their volume is actively used for fermentation. The remaining headspace...
Bioreactor Controls-II
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 fermentor via a sparger...


