Pulverized body drying method and apparatus
AssigneeNara Machinery Co., Ltd.
InventorsYukimasa Ohmura, Takeshi Kato, Kenji Ono, Atsushi Omachi
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Abstract
The present invention provides a particulate drying method and drying apparatus, which can disperse particulates in the drying apparatus, prolong the particulate residence time, and improve the drying conditions, while retaining the advantages of conventional flash dryers.
Claims20
A method for drying particulates in a spirally ascending air current inside a cylindrical container having an internal space, the internal space having a horizontal cross section in the form of a concentric circle along a length of the internal space, the method comprising:
- introducing heated gas in one tangential direction from a periphery of a bottom side wall of the cylindrical container, so as to form the spirally ascending air current in the cylindrical container, and
- introducing particulates to be dried into the internal space of the cylindrical container so that the particulates float in the spirally ascending air current in the cylindrical container.
An apparatus for drying particulates comprising:
- a cylindrical container having an internal space, the internal space having a length with a horizontal cross section in the form of a concentric circle;
- particulate and heated gas feed pipes which are connected to a bottom of the cylindrical container;
- a spiraling mechanism for converting the heated gas introduced from the feed pipe into a spirally ascending air current inside the cylindrical container;
- and
- a particulate and heated gas exhaust pipe which is connected to the top of the cylindrical container,
- wherein a periphery of the bottom side wall of the cylindrical container is made of a perforated plate having a plurality of blow holes arranged so that openings thereof face in one tangential direction of the cylindrical container, a periphery of the perforated plate is enclosed by a bottom container, and the heated gas feed pipe is connected to the bottom container, thereby constituting the spiraling mechanism.
Dependencies are inferred from the claim text.