A method and system for the separate production of alkanes and arenes

CN122427705APending Publication Date: 2026-07-21SINOPEC ENGINEERING INCORPORATION +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SINOPEC ENGINEERING INCORPORATION
Filing Date
2025-01-21
Publication Date
2026-07-21

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Abstract

The present application belongs to the field of aromatic extraction, and discloses a method and system for separating and producing alkanes and aromatics. The system comprises a raw material pretreatment unit, an extraction unit, a raffinate oil solvent recovery unit, an extracted oil solvent recovery unit, a solvent regeneration unit and a cooler; the raw material pretreatment unit comprises a raw material feeding pipeline and a degassing tower; the extraction unit comprises an extraction tower; the raffinate oil solvent recovery unit comprises a raffinate oil stripping separation tower feeding heater and a raffinate oil stripping separation tower; the extracted oil solvent recovery unit comprises a preheater one, a preheater two, a recovery tower one overhead condenser, a recovery tower two overhead condenser, a recovery tower one, a recovery tower three overhead condenser, a recovery tower two, a preheater six, a recovery tower three and an extracted oil stripping separation tower. The system and method of the present application can realize effective separation of alkanes and aromatics in catalytic cracking diesel, effective recovery of solvents, and effective regeneration and circulation of the solvent system.
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