新型柱色谱分析法在塔河减压馏分油分离中的应用

为了有效分离重油中的各种烃类组分，开发了以负载银离子的填料为固定相的特殊柱色谱分离为了有效分离重油中的各种烃类组分，开发了以负载银离子的填料为固定相的新型柱色谱分离方法。将塔河减压馏分油分离为饱和烃、轻芳烃、中芳烃、重芳烃和胶质等组分，并采用气质联用（GC-MS）、气相色谱-场电离-飞行时间质谱（GC-FI-TOF MS）分析了塔河减压馏分油及其亚组分的烃类组成和碳数分布。与传统的双吸附剂法相比，提高了分离效率，将单次分离时间缩短至4～5 h；与专利方法相比，消除了银离子流失对亚组分造成的污染，实现了芳烃组分的进一步分离富集，轻芳烃组分中的单环芳烃质量分数为74.3%，中芳烃组分中的双环芳烃质量分数为37.1%，重芳烃组分中的三环以上芳烃质量分数为65.9%。

APPLICATION OF NEW COLUMN CHROMATOGRAPHY SEPARATION TECHNOLOGY IN SEPARATION OF TAHE VACUUM GAS OIL

A new column-chromatography separation method, which takes the packing loading silver ion as stationary phase, was developed to separate the various hydrocarbon components in heavy oils effectively. Tahe vacuum gas oil was separated into five components of saturates, light aromatics, middle aromatics, heavy aromatics and resin. Hydrocarbon types and carbon number distribution of components were characterized by GC-MS and GC-FI-TOFMS. Compared with the traditional two-adsorbent separation method, the new column-chromatography separation method improves the separation efficiency, and shortens the separation time to 4～5h. Contrasted with the patent separation method, the new column-chromatography separation method avoids the pollution of silver ion lost from stationary phase, and realizes the further separation and enrichment of aromatics. The content of mono-aromatics in light aromatic component, the content of di-aromatics in the middle aromatic component and the content of poly-aromatics in the heavy aromatic component are 74.3 %, 37.1 %, 65.9%, respectively.