一种从煤焦油中萃取含氮芳烃的方法

By combining nonpolar solvents and eutectic solvents, and utilizing the roles of hydrogen bond donors and acceptors, the problem of simultaneous extraction of basic and non-basic nitrogen-containing aromatic hydrocarbons from coal tar was solved, achieving efficient and environmentally friendly utilization of coal tar and increasing its added value.

CN122405320APending Publication Date: 2026-07-17TAIYUAN UNIVERSITY OF TECHNOLOGY
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Patent Information

Application Number
CN202610888562.7
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-06-18
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing technologies cannot simultaneously and efficiently remove alkaline and non-alkaline nitrogen-containing aromatic hydrocarbons from coal tar, and the extraction process also presents problems such as equipment corrosion and high environmental treatment costs.

Method used

By using a combination of nonpolar solvents and eutectic solvents, nitrogen-containing aromatics in coal tar are selectively extracted through the action of hydrogen bond donors and acceptors, and a solvent recycling process is established to reduce processing costs.

Benefits of technology

This method enables efficient extraction of nitrogen-containing aromatics from coal tar, simplifies the process, reduces equipment corrosion and environmental treatment costs, and improves the overall utilization efficiency of coal tar.

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Abstract

本发明属于煤化工技术领域，公开了一种从煤焦油中萃取含氮芳烃的方法，包括以下步骤：S1，将煤焦油、非极性溶剂、液体低共熔溶剂混合、搅拌、静置分层，得到富含含氮芳烃的极性相和含脱氮油的非极性相；所述液体低共熔溶剂包含氢键供体和氢键受体；S2，向极性相中加入反萃取剂，搅拌、静置，得到富含含氮芳烃的反萃取相和液体低共熔溶剂相，将反萃取相进行蒸馏，得到含氮芳烃和反萃取剂。本发明操作简便、环境友好、循环性强，丰富了煤焦油产品，提高了煤焦油的附加值。
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Citation Information

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