PROCESS FOR TREATMENT OF PITCH FROM COAL TAR

A process for treating a pitch fraction from coal tar is described. The pitch fraction is contacted with a solvent, an extraction agent, or an adsorbent to remove at least one contaminant, such as oxygenate compounds, nitrogen containing compounds, and sulfur containing compounds. The solvent can be...

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Bibliographische Detailangaben
Hauptverfasser:	BEDARD, ROBERT L, JAN, DENG-YANG, MAHER, GREGORY F, RENDE, DEAN E, GORAWARA, JAYANT K
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY CRACKING HYDROCARBON OILS FUELS LUBRICANTS METALLURGY MINERAL WAXES PEAT PERFORMING OPERATIONS PETROLEUM, GAS OR COKE INDUSTRIES PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVEHYDROGENATION, OLIGOMERISATION, POLYMERISATION PYROLIGNEOUS ACID RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, ORGASES REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS REFORMING OF NAPHTHA TECHNICAL GASES CONTAINING CARBON MONOXIDE THEIR RELEVANT APPARATUS TRANSPORTING WORKING-UP PITCH, ASPHALT, BITUMEN, TAR
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Beschreibung
Zusammenfassung:	A process for treating a pitch fraction from coal tar is described. The pitch fraction is contacted with a solvent, an extraction agent, or an adsorbent to remove at least one contaminant, such as oxygenate compounds, nitrogen containing compounds, and sulfur containing compounds. The solvent can be an ionic liquid, the extraction agent can be at least one of amphiphilic block copolymers, cyclodextrins, functionalized cyclodextrins, and cyclodextrin-functionalized polymers, and the adsorbent can be exfoliated graphite oxide, thermally exfoliated graphite oxide or intercalated graphite compounds. L'invention concerne un procédé de traitement d'une fraction de brai provenant de goudron de houille. La fraction de brai est mise en contact avec un solvant, un agent d'extraction ou un adsorbant pour éliminer au moins un contaminant, tel que des composés oxygénés, des composés contenant de l'azote et des composés contenant du soufre. Le solvant peut être un liquide ionique, l'agent d'extraction peut être au moins un parmi des copolymères séquencés amphiphiles, des cyclodextrines, des cyclodextrines fonctionnalisées et des polymères fonctionnalisés par une cyclodextrine, et l'adsorbant peut être un oxyde de graphite exfolié, un oxyde de graphite thermiquement exfolié ou des composés de graphite intercalés.