Production of briquettes fuel derived from pinewood sawdust/PVC plastic/bitumite mixed together
LIU Ze-wei1,2, DAI Shi-jin1, HUANG Qi-fei2, ZHAO You-cai1
1. State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;
2. Research Institute of Soil and Solid Waste Environment, Chinese Research Academy of Environment Sciences, Beijing 100012, China
The mixtures of pine sawdust/PVC plastic/bitumite were used for producing high physical properties briquettes fuel with stable intensity and high durability, which can make fully use of abandoned pine sawdust, refractory PVC plastic and low quality Qujing bituminous coal. The air dried mixtures of pine sawdust/PVC/bituminous coal were slected to make briquettes fuel under 150℃ and different pressure. The effects of material ratio and pressure on briquettes initial density, relaxed density and durability were studied. Two or three ingredients of molding fuels had higher density stability and durability than those of single material. The density stability and durability increased with the increase of pressure, but the increasing trend was slow after 15MPa. Considering that the energy consumption increases with the increase of pressure, 15MPa could be determined as the best molding pressure. 1.408g/cm3 was the most stable density of briquettes fuel at 1:1:3, while the durability reached peak value of 99.99% at 1:1:2, under condition of 15MPa.
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