To provide a production technology of a solid fuel, capable of recovering more used solvent oil than those in conventional methods.
This method for producing the solid fuel comprises a mixing process of mixing a mixed oil containing a heavy oil and the solvent oil with porous coal to obtain slurry, a vaporization process of heating the slurry for dehydration to obtain dehydrated slurry, a solid-liquid separation process of separating the solvent oil from the dehydrated slurry to obtain a cake, a drying process of heating the cake and further separating the solvent oil from the cake and a circulating process of circulating the solvent oil separated and recovered in the solid-liquid separation process and drying process. Among the components of the solvent oil used in the mixing process, a component having a higher boiling point than the heating temperature (de-oiling temperature) of the cake by 40C is made as 1 wt.% based on the whole of the solvent oil.
| JPS58501183 | [Title of the Invention] Coal-water slurry |
SHIGEHISA TAKUO
YAMAMOTO SEIICHI
SUGITA SATORU
KINOSHITA SHIGERU
| JP2007138103A | 2007-06-07 | |||
| JP2005263981A | 2005-09-29 | |||
| JP2005206695A | 2005-08-04 | |||
| JPH1046163A | 1998-02-17 | |||
| JP2005139342A | 2005-06-02 | |||
| JP2007084717A | 2007-04-05 | |||
| JP2005120185A | 2005-05-12 |
Makoto Suhara
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