Numerical study of low-emission combustion of NH3-H2-N2 mixtures from partial ammonia decomposition

IF 6 2区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

Ain Shams Engineering Journal Pub Date : 2025-03-28 DOI:10.1016/j.asej.2025.103347

Fachriza Afif Maani , Firman Bagja Juangsa

引用次数: 0

Abstract

Ammonia (NH₃) and hydrogen (H₂) are promising non-carbon fuels for the decarbonization of thermal processes through combustion·NH₃ can serve as an efficient carrier for H₂ through partial decomposition. However, the combustion process of this partially decomposed NH3, especially its NOx emission, requires further investigation. This study employs Computational Fluid Dynamics (CFD) using ANSYS Fluent to simulate premixed combustion of partial NH₃ decomposition through the Reynold Stress Model (RSM) and Eddy-Dissipation Model (EDM). The equivalence ratio varies from 0.2 to 1.4 in increments of 0.1. The RSM and EDM model could estimate the NO_x production effectively without depending on the high computational computer and long-time simulations. Findings indicate that NO_x emissions remain significantly low in rich combustion conditions, starting from an equivalence ratio of 1.1, with values below 150 mg/Nm³.

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部分氨分解NH3-H2-N2混合物低排放燃烧的数值研究

氨（NH3）和氢（H2）是很有前途的非碳燃料，可以通过燃烧脱碳。NH3可以通过部分分解作为H2的有效载体。然而，这种部分分解NH3的燃烧过程，特别是其NOx排放还有待进一步研究。本研究采用计算流体力学（CFD）方法，利用ANSYS Fluent软件，通过雷诺应力模型（RSM）和涡流耗散模型（EDM）对NH3部分分解的预混燃烧进行模拟。等效比从0.2到1.4不等，增量为0.1。RSM和EDM模型可以有效地估计NOx产量，而不依赖于高计算计算机和长时间的模拟。研究结果表明，在丰富的燃烧条件下，NOx排放量仍然很低，从等效比1.1开始，值低于150 mg/Nm3。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Ain Shams Engineering Journal Engineering-General Engineering

CiteScore

10.80

自引率

13.30%

发文量

441

审稿时长

49 weeks

期刊介绍： in Shams Engineering Journal is an international journal devoted to publication of peer reviewed original high-quality research papers and review papers in both traditional topics and those of emerging science and technology. Areas of both theoretical and fundamental interest as well as those concerning industrial applications, emerging instrumental techniques and those which have some practical application to an aspect of human endeavor, such as the preservation of the environment, health, waste disposal are welcome. The overall focus is on original and rigorous scientific research results which have generic significance. Ain Shams Engineering Journal focuses upon aspects of mechanical engineering, electrical engineering, civil engineering, chemical engineering, petroleum engineering, environmental engineering, architectural and urban planning engineering. Papers in which knowledge from other disciplines is integrated with engineering are especially welcome like nanotechnology, material sciences, and computational methods as well as applied basic sciences: engineering mathematics, physics and chemistry.