集成CO2捕获和利用通过结合循环与CH4改革过程:热力学和力学方法
Theodoros Papalas1,2, Andy N Antzaras1, Angeliki A Lemonidou1,3
1Department of Chemical Engineering, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece.
Energy & fuels : an American Chemical Society journal
|July 10, 2024
概括
这项研究引入了一种生产高纯度气和合成气的新工艺. 它将甲改造与二氧化碳的捕获和利用相结合,实现高能量效率.
科学领域:
- 化学工程是化学工程的重要组成部分.
- 能源转换 能源转换
- 可持续化学 可持续化学
背景情况:
- 气和合成气生产的传统方法通常涉及能源密集的分离工艺.
- 碳捕获和利用 (CCU) 策略对于减轻工业过程中的温室气体排放至关重要.
研究的目的:
- 研究一种用于联合生产高纯度 (H2) 和合成气的新工艺概念.
- 将蒸汽甲改制与CaO碳化和甲干改制与CaCO3化进行合,以直接利用CO2.
- 评估热力学平衡并优化反应性化阶段的操作条件.
主要方法:
- 使用Aspen Plus的反应性化阶段的热力学平衡分析.
- 温度,压力和CH4 / CaCO3摩尔比率的参数研究.
- 概念过程设计涉及两个移动床反应堆和一个用于反应化的太阳能反应堆.
主要成果:
- 在化阶段引入CH4可使CaCO3在较低温度 (~700°C) 降解,这是由于现场CO2转化.
- 概念过程设计产生了近乎相当的纯H2和合成气体体积流,H2/CO比率接近1.
- 整体过程实现了~75.9%的能量效率,超过了没有直接使用二氧化碳的传统方法.
结论:
- 拟议的综合工艺有效地共同生产高纯度的H2和合成气,同时直接利用捕获的CO2.
- 使用太阳能反应堆进行反应化可以提高能源效率.
- 这种方法为可持续的气和合成气生产提供了有希望的途径,并提高了能量效率.
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