Method for preparing an ashfree coal including a devulcanizing step

The invention discloses a method for preparing an ashfree coal, comprising the following steps: (A) mixing a raw coal with a solvent in a preset rate to form a slurry; (B) placing the slurry into an ultrasonic extraction reactor and making the slurry react using the ultrasonic wave so as to dissolve...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	LIN CHONG HWAN, LIN YEONG JOON, KIM SAHNG DEOK, CHEONG CHOON GAN, LEE GWANG BOCK, KIM CHONG NAM, LEE SHI HEUN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE ORUNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL CHEMISTRY FIRELIGHTERS FUELS FUELS NOT OTHERWISE PROVIDED FOR LIQUEFIED PETROLEUM GAS LUBRICANTS METALLURGY NATURAL GAS PEAT PETROLEUM, GAS OR COKE INDUSTRIES SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BYSUBCLASSES C10G, C10K TECHNICAL GASES CONTAINING CARBON MONOXIDE
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