Patent ID: 9446913
Filing Date: 2016-09-20
CPC Classification: B65G,C10J,Y02E

Claim Text:
1. A powder conveyance device comprising: a powder discharge line capable of conveying powder at a predetermined tilt angle by allowing char to fall by gravity; a first porous plate which has a predetermined opening ratio and is disposed along the powder discharge line; a second porous plate which has a higher opening ratio than the first porous plate and is disposed along the powder discharge line above the first porous plate; an assist gas feed device which is provided below the first porous plate and feeds a first assist gas to the powder discharge line through a first path through the first porous plate and the second porous plate; a powder feed line capable of feeding powder which is connected to a base end of the powder discharge line, wherein the first porous plate, the second porous plate, and the assist gas feed device are disposed at least at a connection section of the powder feed line in the powder discharge line; and an assist gas feed pipe capable of feeding a second assist gas from the powder feed line at an oblique angle with respect to the second porous plate such that the second assist gas is directed at an upper surface of the second porous plate, wherein the assist gas feed pipe feeds the second assist gas through a second path that is different from the first path through the first porous plate and the second porous plate.