In the present study, pyrolysis of pine needles has been conducted in a semi-batch reactor at different operating parameters such as particle size, temperature and flow rate of nitrogen for bio-oil production. The maximum bio-oil yield of 43.5% was obtained at a temperature of 550 °C, N₂ flow rate of 100 ml/min and particle size of 462μ. At the above optimum conditions, catalytic pyrolysis was observed that bio-oil yield decreased up to 35.2%. The analysis of bio-oil by using gas chromatography-mass spectrometry (GC-MS) shows that zeolite HZSM-5 catalyst increases the production of aromatic hydrocarbon compounds and reduces the oxygenated compounds as compared to non-catalytic pyrolysis bio-oil. From the analysis, it has been confirmed that catalytic bio-oil produces more diesel and gasoline range compounds in comparison to non-catalytic bio-oil. In pyrolysis, products such as 2, 5 dimethyl furan compounds have been found that can be easily used as gasoline range compounds as well as rocket engine fuel.

在本研究中，已在半间歇式反应器中以不同的操作参数（例如，用于生产生物油的氮气的粒径，温度和流速）进行了松针的热解。在550°C，N ₂的温度下可获得43.5％的最大生物油产率流速为100 ml / min，粒径为462μ。在上述最佳条件下，观察到催化热解使生物油收率降低了35.2％。使用气相色谱-质谱法（GC-MS）对生物油进行分析表明，与非催化热解生物油相比，沸石HZSM-5催化剂可提高芳烃化合物的产量并减少含氧化合物。通过分析，已经证实，与非催化生物油相比，催化生物油产生更多的柴油和汽油范围化合物。在热解中，已发现诸如2、5二甲基呋喃化合物之类的产品可以轻松用作汽油范围化合物以及火箭发动机燃料。