氨-氢燃烧驱动氨分解能量利用率的多指标评估

刘斌; 张思超; 周娜; 折晓会; 王欣; 徐礼

doi:10.19799/j.cnki.2095-4239.2026.0337

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氨-氢燃烧驱动氨分解能量利用率的多指标评估

储能测试与评价 | 更新时间：2026-09-18

- 氨-氢燃烧驱动氨分解能量利用率的多指标评估
- Multi-index evaluation of energy utilization rate in ammonia-hydrogen combustion-driven ammonia decomposition
- 储能科学与技术 2026年15卷第9期页码：3750-3761
- 作者机构：
  
  1.石家庄铁道大学机械工程学院，河北省低温储能重点实验室
  2.石家庄铁道大学，河北省新型储能国际联合研究中心
  3.石家庄铁道大学材料科学与工程学院，河北石家庄 050043
- 作者简介：
  
  刘斌（1985—），男，博士，副教授，研究方向为氨氢燃烧技术，E-mail：liubin@stdu.edu.cn；
  周娜，博士，副教授，研究方向为氨氢融合催化剂，E-mail：chmzhouna@stdu.edu.cn。
- 基金信息：
  
  河北省重大科技支撑计划-国际科技合作专项(24294503Z)
- DOI：10.19799/j.cnki.2095-4239.2026.0337
  中图分类号： TQ 05
- 收稿：2026-04-18，
  
  修回：2026-05-28，
  
  纸质出版：2026-09-28
- 稿件说明：
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刘斌, 张思超, 周娜, 等. 氨-氢燃烧驱动氨分解能量利用率的多指标评估[J]. 储能科学与技术, 2026, 15(9): 3750-3761.

LIU Bin, ZHANG Sichao, ZHOU Na, et al. Multi-index evaluation of energy utilization rate in ammonia-hydrogen combustion-driven ammonia decomposition[J]. Energy Storage Science and Technology, 2026, 15(9): 3750-3761.
刘斌, 张思超, 周娜, 等. 氨-氢燃烧驱动氨分解能量利用率的多指标评估[J]. 储能科学与技术, 2026, 15(9): 3750-3761. DOI： 10.19799/j.cnki.2095-4239.2026.0337.

LIU Bin, ZHANG Sichao, ZHOU Na, et al. Multi-index evaluation of energy utilization rate in ammonia-hydrogen combustion-driven ammonia decomposition[J]. Energy Storage Science and Technology, 2026, 15(9): 3750-3761. DOI： 10.19799/j.cnki.2095-4239.2026.0337.

摘要

针对氨-氢燃烧放热与氨催化分解吸热过程之间的能量匹配和利用效率问题，建立了氨-氢燃烧驱动氨分解的燃烧-分解耦合计算流体力学模型，并构建了能量利用率评价方法。模型中燃烧区采用氨-氢-空气Duynslaegher气相反应机理，分解区视为填充Ni-Pt/Al

催化剂的多孔介质反应区，同时考虑燃烧放热、氨分解吸热、组分输运、辐射传热及两区间热量传递过程。通过与文献实验数据对比，验证了所建模型对氨分解耦合过程的预测可靠性。在此基础上，系统考察了分解区入口速度、燃烧区入口速度以及燃烧区与分解区尺寸比例对温度场分布、氨分解率、燃烧区出口温度和能量分配与效率的影响。结果表明，引入氨分解后，分解反应的吸热作用能够重构燃烧区温度场，使燃烧区峰值温度降低100～150 K，分解区径向温差维持在4.3～4.4 K，有利于削弱局部高温集中并降低反应器材料热负荷。当燃烧区入口速度保持不变，分解区入口速度由0.1 m/s 增加至1.0 m/s 时，氨分解率由99.98%降至66.24%，燃烧区出口温度由1053 K降至984 K，但由于尾气带走的热量减少，更多燃烧热被转化为氨分解吸热，系统能量利用率呈先升高后降低的趋势，最大提升约22%。当分解区入口速度固定，燃烧区入口速度由0.1 m/s提高至0.5 m/s时，氨分解率由66.24%提高至99.99%，燃烧区出口温度由984 K上升至1614 K，过量热输入主要随尾气排出，导致有效能量利用率下降。尺寸比例分析表明，燃烧区与分解区尺寸比例由1∶2增大至2∶1时，分解区停留时间由4.00 s缩短至1.00 s，气时空速由900 h

¹增至3600 h

¹，氨分解率由96%降至66%，说明停留时间缩短是分解性能下降的主导因素。本研究建立的多指标评价方法能够揭示燃烧供热、氨分解吸热与氢气化学能产出之间的能量转化关系，可为氨-氢耦合反应器的结构优化提供参考。

Abstract

A coupled combustion-decomposition computational fluid dynamics model is established to address energy-matching and utilization-efficiency challenges between exothermic ammonia-hydrogen combustion and endothermic ammonia catalytic decomposition. Additionally

a method for evaluating energy-utilization efficiency is developed. In the model

the combustion zone adopts the ammonia/hydrogen/air Duynslaegher gas-phase reaction mechanism

while the decomposition zone is modeled as a porous-medium reaction zone packed with an Ni-Pt/Al

catalyst. The model accounts for combustion heat release

ammonia-decomposition heat absorption

component transport

radiative heat transfer

and heat transfer between the two zones. The prediction reliability of the model for the coupled ammonia-decomposition process is validated against experimental data from the literature. On this basis

the effects of the decomposition-and combustion-zone inlet velocities

as well as the ratio of the size of the combustion zone to that of the decomposition zone

on the temperature-field distribution

ammonia-decomposition rate

combustion-outlet temperature

and energy-distribution efficiency are systematically investigated. Results show that integrating ammonia decomposition reconstructs the combustion temperature field

suppressing the peak temperature by 100—150 K while maintaining a radial decomposition-temperature difference at 4.3—4.4 K. This thermal leveling mitigates localized high-temperature concentrations and reduces the thermal load on the reactor material. When the combustion inlet velocity is kept constant while the decomposition inlet velocity increases from 0.25 to 1.0 m/s

the ammonia-decomposition rate decreases from 99.98% to 66.24%

and the combustion outlet temperature decreases from 1053 to 984 K. However

the decreased heat released by the exhaust gas and the conversion of more combustion heat into ammonia-decomposition heat absorption allow the system's energy-utilization efficiency to follow a trend of first increasing and then decreasing

peaking at approximately 22% gain. When the decomposition inlet velocity is fixed and the combustion inlet velocity increases from 0.1 to 0.5 m/s

the ammonia-decomposition rate increases from 66.24% to 99.99% but surges the combustion outlet temperature to 1614 K. The excess heat input is mainly discharged with the exhaust gas

causing a decrease in the effective energy-utilization proportion. The size-ratio analysis indicates that increasing the combustion-to-decomposition size ratio from 1∶2 to 2∶1 shortens the decomposition-zone residence time from 4.00 to 1.00 s while increasing the gas hourly space velocity from 900 to 3600 h

-1

. Consequently

the ammonia-decomposition rate decreases from 96% to 66%

establishing residence-time reduction as the dominant factor governing the decline in decomposition performance. The established multi-index evaluation framework elucidates the energy-conversion dynamics between combustion heat supply

ammonia-decomposition heat absorption

and hydrogen chemical en

ergy output

providing a reference for the structural optimization of coupled ammonia-hydrogen reactors.

关键词

Keywords

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