COAL DEASHING

An improved coal deashing process wherein coal is mixed with a first dissolving solvent, solubilized and flashed to provide a prepared mixture, and the prepared mixture is mixed with a second dissolving solvent to produce a feed mixture. The insoluble coal products produced are separated from the fe...

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Bibliographische Detailangaben
Hauptverfasser:	R.E. LEONARD, R.A. BALDWIN
Format:	Patent
Sprache:	eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY CRACKING HYDROCARBON OILS FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY MINERAL WAXES NATURAL GAS 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 SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE
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Beschreibung
Zusammenfassung:	An improved coal deashing process wherein coal is mixed with a first dissolving solvent, solubilized and flashed to provide a prepared mixture, and the prepared mixture is mixed with a second dissolving solvent to produce a feed mixture. The insoluble coal products produced are separated from the feed mixture as a first heavy fraction in a first separation zone and the soluble coal products are recovered as a second heavy fraction from a second separation zone. The second dissolving solvent is recovered from the first heavy fraction and the second heavy fraction for recycling to aid in the production of the feed mixture. The first dissolving solvent is recovered from the first and the second heavy fractions and recycled to aid in solubilization of the coal.