본 연구는 톱밥의 열분해를 위한 Rotary Kiln의 기본설계문제와 조작조건을 논의하였다. 특히 Rotary Kiln내에서의 고체반응물질의 평균체류시간과 混合度의 關係式을 얻었으며 그결과 체류시간은 원료투입량에 무관함을 발견하였고 가장 混合度가 좋은 回轉數는 120rpm이었다. Axial dispersion model을 적용하여 熱分解溫度에 따른 必要한 Rotary Kiln의 길이를 予見하도록 하였다.

A study on the fundamental design of the rotary kiln and the operational techniques of the kiln for the pyrolysis of saw dust was carried out. The emphasis of this study was placed on the relationship between the mea residence time and mixing degree of the solid reactant in the rotary kiln. It was found that the mean residence time of the solid was independent with the feed rate, and the highest mixing degree was obtained at rotational speed of 120 rpm. With the Axial Dispersion Model, the optimum lengths of the rotary kiln with different reaction temperatures were predicted for the pyrolysis.