DUCT WALL SURFACE STRUCTURE - MITSUBISHI HITACHI POWER SYS

Title:

DUCT WALL SURFACE STRUCTURE

Document Type and Number:

WIPO Patent Application WO/2015/033679

Kind Code:

A1

Abstract:

A duct wall surface structure wherein, in a flue which carries a solid-gas two-phase flow and is formed by a duct made of steel plates, and is equipped with hoppers, the solid particle trapping efficiency in the hoppers is improved, thereby reducing the outflow of these particles downstream from the duct. This duct wall surface structure, which is for a flue (10) carrying a solid-gas two-phase flow containing large-diameter ash (50) in the gas flow, is equipped with a first hopper (20A), which is provided at the lower end of a first vertical flue part (12) installed in the direction in which the flow has a velocity component in the up-down direction, and which recovers the large-diameter ash (50) from the gas flow. In addition, a low-rebound part (60) having a smaller rebound coefficient than a steel plate is provided on a slanted surface (21) against which the large-diameter ash (50) collides upstream from the first hopper (20A) in the flow direction.

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Inventors:

ODA MANABU (JP)
KUSHIOKA KIYONORI (JP)
KIYOSAWA MASASHI (JP)

Application Number:

PCT/JP2014/069134

Publication Date:

March 12, 2015

Filing Date:

July 18, 2014

Export Citation:

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Assignee:

MITSUBISHI HITACHI POWER SYS (JP)

International Classes:

F23J3/04; F23M5/00

Foreign References:

JPH01169933U	1989-11-30
JPS6036817A	1985-02-26
JP2013155940A	2013-08-15
JPH10165734A	1998-06-23
US6994036B2	2006-02-07
JPH0295415A	1990-04-06
JP2008241061A	2008-10-09

Other References: