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The technology of co-firing ammonia with natural gas has become a global research focus due to its significant potential in reducing carbon emissions. During the combustion process, ammonia faces challenges such as difficulty in ignition, slow flame propagation speed, and susceptibility to blow-off. The addition of natural gas can significantly improve these combustion characteristics, thereby promoting the widespread application of ammonia fuel and opening up new avenues for the development of clean energy. Firstly, the application potential of natural gas-ammonia co-firing technology is evaluated from the perspectives of technical and economic feasibility, and its positive significance in the energy transition process is analyzed. Then, drawing on research findings at the reaction kinetics level, the chemical reaction mechanisms of ammonia and natural gas co-firing are elucidated. On this basis, the latest domestic and international research progress in this field is reviewed, covering experimental studies, numerical simulations, and low-NOx stable combustion control strategies. It is pointed out that significant discrepancies still exist among different mechanism models in terms of simulation accuracy and experimental prediction universality. Future research needs to combine multi-scale simulations to develop more adaptable ammonia combustion prediction models that can balance accuracy and efficiency. Finally, the challenges encountered in the practical application of natural gas-ammonia co-firing technology are summarized, and future research directions are proposed, aiming to provide a theoretical basis and practical guidance for the in-depth development of this technology.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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