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A model of cement calciner using forestry biomass as alternative fuel was established based on Aspen Plus. Poplar wood was selected as the representative forestry biomass to replace 40% of the coal fuel, and the effects of gasification temperature, equivalence ratio, and biomass moisture content on the gas production components and calorific value, the outlet temperature of the cement calciner, and NO emission concentration was investigated under the conditions of lowtemperature gasification in a fluidized bed. Then NO emission concentration was taken as the response value, and the central combination test was carried out to establish the response surface and analyzed. The results showed that at a biomass feed rate of 11 000 kg/h, with the gasification temperature increasing from 550 °C to 700 °C, the content of each combustible component in the produced gas firstly decreased and then increased, and the increase in the content of the combustible component had a promotional effect on the generation of NO; at the equivalence ratio of more than 0.15, coke was mostly consumed by the gasification reaction, and the reduction of NO was weakened, which led to the increase in NO emission concentration; the increase in the moisture content of biomass led to the increase in the emission concentration of NO; the increase in the moisture content of biomass leads to a decrease in the content of each combustible component in the produced gas, and the outlet temperature of the cement calciner showed a decreasing trend; there was an interaction between the three factors, and the significance level of the effect of the equivalence ratio on the NO emission concentration was the highest, and the strongest interaction between the gasification temperature and the equivalence ratio was observed; when the gasification temperature was 550 °C, the equivalence ratio was 0.2, and the biomass water content was 12.5%, the NO emission concentration(442.91 mg/m³) was minimized
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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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