Based on the former literature, part experiment was improved by using condensation-reflux device, so as to increase the sample recovery and decrease the loss of light hydrocarbons.

• 在前人工作的基础上，对部分实验进行了改进，采用冷凝回流装置，既提高了样品的回收率，同时也减少了轻烃部分的损失，分离效果很好。