大豆油催化裂解放大实验研究

Scale-up of Pyrolysis Experiment of Soybean Oils for the Production of Biofuels

以大豆油为原料,在60 L间歇式裂解反应釜中考察了碱性催化剂作用下的油脂催化裂解工艺过程。实验表明,在催化剂的用量为油脂质量的1.5%的条件下,裂解温度450℃,裂解时间2 h,裂解油收率71.5%,酸值67 mg/g。裂解油的组成及结构通过FT-IR,GC-MS确证,主要含有直链结构的烷烃、烯烃、烷基酮和羧酸等成分,主要分布在C14～C22,与石化柴油分布类似。

Pyrolysis of soybean oils for the production of biofuels has been studied in a 60 L scale-up reactor.Under the reaction conditions of 450 ℃,reaction time 2 h and catalyst amount of 1.5 %,the yield of pyrolytic oil is up to 71.5 % with the acid number of 67 mg/g.The pyrolytic products were characterized by FT-IR and GC-MS.The results showed that it mainly consisted of alkane,alkene,alkone and carboxylic acids with the molecular distribution between C14-C22.