REGENERATION PROCESS OF POLAR SOLVENTS FROM AROMATIC EXTRACTION PROCESS BY TREATING WITH LIGHT HYDROCARBONS

AN IMPROVED SOLVENT REGENERATION SYSTEM FOR EXTRACTIVE DISTILLATION AND LIQUID- LIQUID EXTRACTION PROCESSES CAPABLE OF EFFECTIVELY REMOVING HEAVY HYDROCARBONS AND POLYMERIC MATERIALS THAT OTHERWISE DEVELOP IN A CLOSED SOLVENT LOOP. THE IMPROVED PROCESS EMPLOYS A LIGHT HYDROCARBON DISPLACEMENT AGENT,...

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Hauptverfasser:	SHEN, HUNGUNG, CHIU, TSUNG-MIN, LIN, TZONG BIN, HWANG, JYH-HAUR, WU, KUANG-YEU, LEE, FU MING
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY CRACKING HYDROCARBON OILS FUELS HETEROCYCLIC COMPOUNDS LUBRICANTS METALLURGY MINERAL WAXES ORGANIC CHEMISTRY PEAT PETROLEUM, GAS OR COKE INDUSTRIES PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Zusammenfassung:	AN IMPROVED SOLVENT REGENERATION SYSTEM FOR EXTRACTIVE DISTILLATION AND LIQUID- LIQUID EXTRACTION PROCESSES CAPABLE OF EFFECTIVELY REMOVING HEAVY HYDROCARBONS AND POLYMERIC MATERIALS THAT OTHERWISE DEVELOP IN A CLOSED SOLVENT LOOP. THE IMPROVED PROCESS EMPLOYS A LIGHT HYDROCARBON DISPLACEMENT AGENT, WHICH IS AT LEAST PARTIALLY SOLUBLE IN THE SOLVENT TO SQUEEZE THE HEAVY HYDROCARBONS AND POLYMERIC MATERIALS OUT OF THE SOLVENT, WITH VIRTUALLY NO ADDITIONAL ENERGY REQUIREMENT. IT HAS BEEN DEMONSTRATED THAT THE LIGHT NON-AROMATIC HYDROCARBONS IN THE RAFFINATE STREAM GENERATED FROM THE EXTRACTIVE DISTILLATION OR THE LIQUID- LIQUID EXTRACTIVE PROCESS FOR AROMATIC HYDROCARBONS RECOVERY CAN DISPLACE NOT ONLY THE HEAVY NON-AROMATIC HYDROCARBONS BUT ALSO THE HEAVY AROMATIC HYDROCARBONS FROM THE EXTRACTIVE SOLVENT, ESPECIALLY WHEN THE AROMATIC HYDROCARBONS IN THE SOLVENT ARE IN THE C₁₀₊ MOLECULAR WEIGHT RANGE.