蒸汽对Ca-循环中CaO碳化的蒸汽的影响
Ruzhan Bai1, Na Li1, Quansheng Liu1
1College of Chemical Engineering, Inner Mongolia University of Technology, Huhhot 010051, China.
Molecules (Basel, Switzerland)
|July 14, 2023
概括
蒸汽添加增强了从发电厂捕获二氧化碳的循环. 它改善了氧化碳化转化,尽管对孔隙结构有一些负面影响.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 循环是从燃煤发电厂捕获二氧化碳 (CO2) 的关键技术.
- 蒸汽对循环效率和机制的影响需要进一步研究.
研究的目的:
- 为了研究蒸汽对二氧化碳捕获的循环过程的影响.
- 分析不同阶段 (化和碳化) 蒸汽存在对反应动力学和转化的影响.
主要方法:
- 使用了一种自制的热重力测量分析仪,能够快速加热和冷却.
- 在恒温条件下进行实验,以测量样本重量变化.
- 研究的参数包括化或碳化过程中的水蒸气添加和反应温度.
主要成果:
- 蒸汽通常对循环中的二氧化碳捕获效率产生积极影响.
- 在化和碳化阶段存在蒸汽,可以促进CaCO3的分解和CaO碳化转化.
- 在碳化阶段的蒸汽改善了二氧化碳的捕获,而其仅在化过程中的存在导致了较低的CaO碳化.
结论:
- 蒸汽提高了CO2的扩散系数和CaO的碳化转化率.
- 在循环过程中优化蒸汽的存在可以提高发电厂的二氧化碳捕获效率.
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