Chaiya Chaiyan, Kaewvimol Lerdluck
Department of Chemical Engineering, Faculty of Engineering, Rajamangala University of Technology Thanyaburi, Pathum Thani, 12110, Thailand.
Department of Chemical Engineering, Faculty of Engineering, Rajamangala University of Technology Krungthep, Bangkok, 10120, Thailand.
Heliyon. 2024 Jul 24;10(15):e35090. doi: 10.1016/j.heliyon.2024.e35090. eCollection 2024 Aug 15.
Sacha inchi waste consists of residues (SR) and shells (SS) that are processed into liquid fuel using a traditional pyrolysis process. Pyrolysis was performed at a constant heating rate of 20 °C/min and nitrogen flow rate of 100 mL/min. Before the process took place, a preliminary TGA analysis was performed and the results revealed that the appropriate pyrolysis temperature and time allowed a variation of 250-450 °C and 10-50 min, respectively. The results showed that the pyrolysis oil yields of both SR and SS increased with increasing pyrolysis temperature and time. However, the pyrolysis oil yield of SR was significantly higher than that of SS because the main component of SR contains abundant carbon from saturated fatty acids. The ANOVA method shows that the SS model is more complex and examines more terms and interactions, whereas the SR model is simpler and focuses on fewer components, but still shows significant effects, especially through temperature. The nonsignificant p-value for time in the SR model suggests that time may not have the same influence as temperature on the dependent variable. The SS pyrolysis oil was consistent and resulted in a constant calorific value and flash point between 31.10 and 32.14 MJ/kg and 120 and 124 °C, respectively. However, decreasing the O/C atomic ratio of SR pyrolysis oil from 0.92 to 0.38 influenced the increasing calorific value from 36.66 to 38.75 MJ/kg, while the H/C atomic ratio of SR pyrolysis oil was close to 2.00. This suggests that its effectiveness maintains an alkene structure that can improve fuel efficiency. The molecular formulae of the SS pyrolysis oil were CHNO and that of SR pyrolysis oil was CHNO.
印加果废料由残渣（SR）和果壳（SS）组成，使用传统热解工艺将其加工成液体燃料。热解在20℃/min的恒定加热速率和100mL/min的氮气流速下进行。在该工艺进行之前，进行了初步的热重分析（TGA），结果表明，合适的热解温度和时间分别允许在250 - 450℃和10 - 50分钟范围内变化。结果表明，SR和SS的热解油产率均随热解温度和时间的增加而增加。然而，SR的热解油产率显著高于SS，因为SR的主要成分含有来自饱和脂肪酸的丰富碳。方差分析（ANOVA）方法表明，SS模型更复杂，检查的项和相互作用更多，而SR模型更简单，关注的成分更少，但仍显示出显著影响，尤其是通过温度。SR模型中时间的p值不显著表明时间对因变量的影响可能与温度不同。SS热解油是一致的，其热值和闪点分别恒定在31.10至32.14MJ/kg和120至124℃之间。然而，将SR热解油的O/C原子比从0.92降至0.38会使热值从36.66增加到38.75MJ/kg，而SR热解油的H/C原子比接近2.00。这表明其有效性维持了一种可以提高燃料效率的烯烃结构。SS热解油的分子式为CHNO，SR热解油的分子式为CHNO。
