三种中药渣的热解气化特性

该文采用热解气化方法，对含水率为25%左右的3种药渣（杞菊地黄丸、六味地黄丸、香砂养胃丸药渣）进行了气化试验，并与玉米秸秆做比较。结果表明，当过量空气系数为1.1时，三种药渣均具有良好的气化特性，燃气热值均达到5 300 kJ/m3以上，其中香砂养胃丸药渣的燃气热值达到5 460 kJ/m3。相较于玉米秸秆，药渣热解气化产生较多的焦油，过量空气系数为1.1时，3种药渣气化的焦油体积质量约为1 000 mg/m3，并随过量空气系数增加处于不断下降的趋势，证实了3种药渣具有良好的热解气化特性，为中药渣的资源化处理提供了一条新思路。

Gasification characteristics of three herb residues

By adapting gasification method, this paper conducts a gasification test on three kinds of herb residues, including Qiju Dihuang Wan, Liuwei Dihuang Wan, Xiangsha Yangwei Wan, of which the water contents were about 25 percent. Compared with corn stalk, the results showed that when the excess air coefficient was 1.1, all of the above three kinds of herb residues showed good gasification characters, with the calorific values above 5300 kJ/m3. The calorific value of Xiangsha Yangwei Wan residue was 5 460 kJ/m3. Compared with corn stalk, herb residues produced more tar during the gasification process. When the excess air coefficient was 1.1, the tar content of the three herb residues was about 1 000 mg/m3 and it kept decreasing with the increase of excess air coefficient. This experiment proves that these three kinds of herb residues have good gasification characters, providing a new method to the resource recovery of herb residues.