CLASSIFIER, PULVERIZING AND CLASSIFYING DEVICE, AND PULVERIZED COAL BURNING BOILER

Title:

CLASSIFIER, PULVERIZING AND CLASSIFYING DEVICE, AND PULVERIZED COAL BURNING BOILER

Document Type and Number:

WIPO Patent Application WO/2017/130451

Kind Code:

A1

Abstract:

A classifier is provided with: a housing constituted so as to take in air from the bottom in an outer peripheral area of an inner space; a flow correcting unit provided on the inside wall surface of the housing and constituted so as to change the direction of the airflow toward the center axis side of the housing; and a ring shaped rotating unit provided rotatably in an inner peripheral area positioned on the inner peripheral side of the outer peripheral area in the inner space of the housing and constituted so as to classify particles accompanying the airflow. The ring shaped rotating unit has a plurality of rotating blades arranged and spaced around the axis of rotation of the ring shaped rotating unit. The external form of the ring shaped rotating unit formed by the plurality of rotating blades in a side view of the ring shaped rotating unit has an angle θ of 75° or less formed by the external shape of the ring shaped rotating unit with respect to a line extending from the ring shaped rotating unit in a horizontal direction toward the outside in the radial direction.

Inventors:

MATSUMOTO SHINJI (JP)
ARIMA KENICHI (JP)
DAIMARU TAKUICHIRO (JP)
FUKUI KAZUSHI (JP)
UCHIDA HIDECHIKA (JP)

Application Number:

PCT/JP2016/075745

Publication Date:

August 03, 2017

Filing Date:

September 02, 2016

Export Citation:

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Assignee:

MITSUBISHI HITACHI POWER SYS (JP)

International Classes:

B07B7/083; B02C15/04; B02C23/16; F23K1/00

Foreign References:

JPS6422386A	1989-01-25
JPH04235755A	1992-08-24
JP2013181680A	2013-09-12
JPS60128786U	1985-08-29
JPH08266923A	1996-10-15
JPS5716272B2	1982-04-03
JP2617623B2	1997-06-04
JP4340395B2	2009-10-07

Other References: