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在CO2环境下对有机废物的热解和气化方面取得的最新进展使其成为增值产品
Yanyu Yang1, Tao Zhou2, Mingqian Cheng3
1Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
Journal of environmental management
|March 15, 2024
概括
在废物的热解气化中利用二氧化碳 (CO2) 减少了排放,提高了产品价值. 这种方法提高了生物炭的质量,降低了生物油的毒性,并增加了生物气的产量.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 材料科学 材料科学 材料科学
背景情况:
- 化石燃料的燃烧会增加大气中的二氧化碳 (CO2) 水平,从而引发温室效应.
- 使用二氧化碳作为热解气化介质提供了双重好处:减少排放,增加产品价值.
研究的目的:
- 审查利用二氧化碳对有机固体废物的热解气化方面的进展.
- 讨论二氧化碳对这些过程的影响机制.
- 探索二氧化碳及其热解气化产品的扩大利用.
主要方法:
- 关于二氧化碳介导的热解和气化最新科学文献的综述.
- 对二氧化碳与炭,生物炭,生物油和气态产品的反应性的分析.
- 研究二氧化碳对催化剂性能的影响.
主要成果:
- 在温度≥710°C时,二氧化碳与炭反应,导致额外的质量损失.
- 二氧化碳增强了生物炭的特定表面积和稳定性,并减少了生物油的毒性.
- 二氧化碳通过与气态热解产品反应增加了生物气产量,并通过抑制焦炭形成来减少催化剂的失活.
结论:
- 在二氧化碳大气层下的热解气化为废物回收和二氧化碳利用提供了一个有前途的途径.
- 建议进一步研究这些过程中使用未经净化的二氧化碳.
- 建议扩大热解气化产品的应用范围.
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