中文摘要：

为了探索催化裂化掺炼废弃油脂过程中游离脂肪酸对原料转化的影响,在固定流化床催化裂化实验装置上进行了正庚烷掺炼正辛酸的催化裂化研究,考察了正辛酸的添加量、反应温度对正庚烷转化率、产物分布和液体产物组成的影响。结果表明：正庚烷和正辛酸在酸性催化剂上的反应性能差别明显,正庚烷的转化率较低,其反应后液体产物以烷烃为主;正辛酸转化率非常高,且反应后的液体产物主要以芳烃为主。当在正庚烷中添加少于质量分数10%的正辛酸时,可以促进正庚烷的转化;当正辛酸的添加量大于10%时,反而会阻碍正庚烷的转化,而且正辛酸的添加量对液体产物的组成影响显著。反应温度的提高有利于混合原料的转化,同时可以提高液体产物中芳烃和烯烃的质量分数。

英文摘要：

To investigate the effect of free fatty acid on the feed conversion, the catalytic cracking performance of n-heptane mixing with octanoic acid was studied in a fixed fluidized bed reactor over acid catalyst. Effects of the additive amount of octanoic acid and reaction temperature on n-heptane conversion, product distribution and liquid product composition were investigated. The results show that n-heptane has poorer cracking ability than octanoic acid. Paraffins are main liquid product with n-heptane as feed, while aromatics are main product with octanoic acid as feed. The cracking of n-heptane is promoted with the additive mass fraction of octanoic acid less than 10% , while is hindered with the amount more than 10%, and the amount affects the liquid product composition significantly. Raising temperature could enhance the feed conversion, and increase the contents of aromatics and olefins in liquid product.