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To further understand the interaction in copyrolysis of biomass and waste plastics, the pyrolysis characteristics of poplar wood(PW) and the effect of polypropylene (PP) addition on the product distribution and composition of PW and PP co pyrolysis were studied by thermogravimetric analysis and fixed bed reactor. The results showed that 500 °C is the optimal temperature for PW pyrolysis to obtain tar product, and the maximum tar yield is 31.2%. The experimental value of the maximum weight loss rate of copyrolysis is slightly greater than the theoretical value in the low temperature range, and the peak temperature of the DTG curve in the high temperature range shifts to higher temperature zone. Copyrolysis of PW and PP has a positive synergistic effect on the generation of gas products, increasing the low heating value of gas products. Copyrolysis has a negative synergistic effect on the generation of tar. However, the oxygencontaining compounds (phenols, acids, ketones and furans) in tar decrease, and olefin compounds increase significantly. In addition, the degree of graphitization of copyrolytic char becomes higher.
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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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