The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 13, 2011
Filed:
Dec. 05, 2007
Satoru Sugita, Takasago, JP;
Tetsuya Deguchi, Takasago, JP;
Takuo Shigehisa, Takasago, JP;
Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.), Kobe-shi, JP;
Abstract
(Problems) Providing a method and an apparatus for producing a solid fuel, capable of suppressing increase in dust coal concentration in circulating oil. (Solving Means) The method for producing a solid fuel comprises a mixing step of mixing porous coal with a mixed oil containing a heavy oil and a solvent oil to prepare a raw material slurry; an evaporation step of heating the raw material slurry to promote dehydration of the porous coal while impregnating the mixed oil into pores of the porous coal to obtain a dehydrated slurry; a solid-liquid separation step of separating a resulting upgraded porous coal and the mixed oil from the dehydrated slurry; a final drying step of drying the separated upgraded porous coal with a carrier gas, and subsequently condensing a vaporized mixed oil in the carrier gas by cooling, while capturing the porous coal in the carrier gas by atomization of the condensed mixed oil, thereby recovering the mixed oil; and a circulation step of returning the mixed oil separated and recovered in the solid-liquid separation step to the mixing step, and the method is characterized by further comprising a supply step A of supplying the mixed oil recovered in the final drying step to the solid-liquid separation step. The apparatus for producing a solid fuel adopts the method.