劣质柴油加氢改质催化剂的制备及其应用Ⅱ.共胶法加氢改质催化剂的应用

PREPARATION AND APPLICATION OF HYDROUPGRADING CATALYST FOR INFERIOR DIESEL PartⅡ.PERFORMANCE OF HYDROUPGRADING CATALYST PREPARED BY CO-GELLING

通过共胶法制备了一种非负载型加氢改质催化剂。采用X射线衍射、NH3-程序升温脱附、吡啶吸附红外光谱、扫描电子显微镜、N2吸附-脱附等手段对制备的催化剂进行表征。以中国石化青岛炼油化工有限责任公司(简称青岛炼化)和石大科技胜华炼油厂(简称胜华)两种劣质催化裂化(FCC)柴油为原料,考察催化剂的脱硫、脱氮、脱芳烃效果及其对高硫、高芳烃劣质柴油原料的适应性。结果表明,共胶法催化剂可在360℃下使青岛炼化FCC柴油硫质量分数由7 428μg/g降到14μg/g、胜华FCC柴油硫质量分数由5 114μg/g降到12μg/g,能够完全脱除两种劣质FCC柴油中的氮化物,且对FCC柴油的稠环芳烃脱除率达到99%以上。

An unsupported diesel hydroupgrading catalyst was prepared by co-geling and characterized by N2 adsorption-desorption isotherms, XRD, NHa-TPD, Py-IR and SEM. The catalyst was evaluated by two different FCC diesels for the hydrodesulfurization, hydrodenitrogeneration and hydrodearomatization and tested the feed adaptability for high S and aromatics inferior feedstocks. The results show that at a temperature of 360℃, for the Qingdao FCC diesel consisting of difficult to be removed DBTs as the main S-containing compounds, the sulfur content can be reduced to 14 μg/g from 7 428 μg/g; for the Shenghua FCC diesel consisting of easily removed BTs as the main S-containing compounds, the sulfur content can be reduced to 12 μg/g from 5 114 μg/g. The catalyst can remove the N-containing compounds completely in the two FCC diesels. Besides, polycyclic aromatic hydrocarbons in the two FCC diesels can be removed by up to 99%.