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Updated: Jun 10, 2025

Ammonia Synthesis at Low Pressure

Ammonia Synthesis at Low Pressure

Published on: August 23, 2017

不同小规模电化学NH₃生产厂的技术经济评估

Boaz Izelaar¹, Mahinder Ramdin¹, Alexander Vlierboom¹

¹Process and Energy Department, Faculty of Mechanical Engineering, Delft University of Technology 2628 CB Delft The Netherlands R.Kortlever@tudelft.nl.

Energy & environmental science

|October 14, 2024

概括

通过降解反应 (NRR) 的电化学氨基合成显示了绿色氨基生产的潜力. 然而,目前的NRR方法尚未在经济上与传统的Haber-Bosch工艺具有竞争力,需要在效率和电力成本方面大幅度改进.

科学领域:

电化学电化学电化学
化学工程是化学工程的重要组成部分.
可持续能源可持续能源

背景情况:

通过降解反应 (NRR) 进行电化学氨基合成是一种对传统方法有前途的可持续替代方案.
过程建模和技术经济评估对于评估新化学生产技术的可行性至关重要.

研究的目的:

开发和比较各种电化学氨合成途径的工艺模型.
对小规模 (91/天) 综合氨生产厂进行技术经济评估.
将NRR技术与电气化和蒸汽甲改造 (SMR) 的哈伯-博什工艺进行比较.

主要方法:

为完全集成的电化学氨生产厂开发广泛的工艺模型.
在环境和高温下对 () 中介,直接和间接NRR通路的技术经济评估.
与电气化和SMR Haber-Bosch工艺进行比较.

主要成果:

在环境条件下,水性NRR只有在高度乐观的条件下 (FE > 80%,j ≥ 0.3 A cm-2),电力<0.024美元/千瓦时) 才能在经济上与SMR Haber-Bosch相比较.
高温NRR是资本密集的,因为需要大量的设备 (换热器,辅助设备,水电解器).
介导的NRR面临着由于涂层,欧姆损失和H2要求的经济限制.

结论:

目前的NRR技术需要在电解器性能方面取得重大进展,并降低电力成本,才能与SMR Haber-Bosch竞争.
在研究范围内,高温和介导的NRR通路在经济上是不可行的.
进一步研究替代材料和NRR机制是必要的,以提高商业竞争力.

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