USY吸附脱除页岩柴油中的碱性氮

以USY分子筛为吸附剂,采用静态吸附的方法,对桦甸页岩柴油进行了吸附脱氮的研究。实验考察了吸附时间、吸附温度和剂油质量比对脱氮率的影响。实验结果表明,当吸附时间为30min、吸附温度为120℃、剂油质量比为0.03g/g时,脱氮率达到最高,为30.73%,静态平衡吸附量为27.2mg/g,经多次再生,脱氮率仍在25%以上。对吸附脱氮进行了动力学研究,结果表明,Y分子筛吸附脱氮过程符合二级吸附速率方程。

Adsorption Removal of Basic Nitrogen in the Shale Diesel by USY Molecular Sieve

Adsorption removal of basic nitrogen compounds in the shale diesel with USY molecular sieves was investigated. The effect of adsorption time, temperature and adsorbent/oil weight ratio on the nitrogen removal rate was studied, and found that highest nitrogen removal rate （30.73 %） are obtained under the following conditions： the adsorbent to oil weight ratio of 0.03, the adsorption temperature of 120 ℃, the adsorption time of 30 rain. Simultaneously, the static equilibrium adsorption capacity can reach 27.2 mg/g. After regenerated for several cycles, the removal rate of basic nitrogen compounds is still more than 25 %. Adsorption kinetics suggested that adsorption denitrogenafion follows the second--order equation.