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In this paper, a swirl staged burner with pyrolysis volatiles as fuel was designed. The flow field of the burner combustion process was simulated by ANSYS software, and the flow and combustion characteristics of the burner were studied. The results show that the swirling air of the burner effectively breaks up the pyrolysis volatiles, and achieves the effect of sufficient mixing, stable and uniform flow field and temperature field. The edge flow field generated by swirling air reduces the temperature of the inner wall of the burner (up to 815.69 K), slows down the high temperature corrosion of the wall and reduces the formation of NO₂; the NO₄ concentration in the flue gas of the burner is 43.33 mg/m³, which is significantly lower than the standard limit. The content of pyrolysis volatiles at the outlet of the burner is less than 0.2%.
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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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