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1·By the continuous-feeding external-heating rotary kiln, the experimental studies on the gas yield characteristics, mass balance and net energy income of the polyethylene pyrolysis were performed.

在连续给料外热式回转窑试验台上，以聚乙烯为试验物料进行了热解产气特性、质量平衡以及能量净收益的试验研究。

2·The rotary kiln can continuous feeding and discharging, so the processing of massive materials, can demonstrate its superiority.

由于回转窑可以连续进出料，所以加工大量物样时，更能显示其优越性。