Coal deactivation processing device

Patent metadata

Field	Value
Publication number	US-2016298044-A1
Application number	US-201415038600-A
Country	US
Kind code	A1
Filing date	Nov 12, 2014
Priority date	Dec 6, 2013
Publication date	Oct 13, 2016
Grant date	—

Abstract

A coal deactivation processing device includes: a rotary kiln body provided rotatably into which coal and a processing gas are supplied; and a feed pipe provided so as to be able to rotate along with the rotary kiln body, extending along a lengthwise direction of the rotary kiln body, and having a coolant flowing therein. A pair of blades is provided on an outer circumferential section of the feed pipe and protrudes in a radial direction. The feed pipe and the pair of blades are arranged so as to pass through an accumulated coal layer of the coal within the rotary kiln body upon rotation of the rotary kiln body, and such that an angle formed by a tangent of a path along which the central axis of the feed pipe passes and the bisector of the pair of blades is from 0 to 40 degrees.

First claim

1 . A coal deactivation processing device performing deactivation of coal with a processing gas that includes oxygen, comprising:
a kiln body provided rotatably into which the coal and the processing gas are supplied; and a feed pipe provided so as to be able to rotate along with the kiln body, extending along a lengthwise direction of the kiln body, and having a coolant flowing therein, a pair of blades being provided on an outer circumferential section of the feed pipe and protruding in a radial direction, and the feed pipe and the pair of blades being arranged so as to pass through an accumulated coal layer of the coal within the kiln body upon rotation of the kiln body, and such that an angle formed by a tangent line of a path along which a central axis of the feed pipe passes and a bisector line of the pair blades is from 0 to 40°.

2 . The coal deactivation processing device according to claim 1 , wherein
the pair of blades is arranged such that a blade angle formed by one blade of the pair of blades and the bisector line of the pair of blades is greater than an angle of repose.

3 . The coal deactivation processing device according to claim 2 , wherein
the blade angle is from 45 to 85°.

4 . The coal deactivation processing device according to claim 1 , wherein
a minimum blade length in the radial direction of the feed pipe is from 5 to 45% of a radius of the feed pipe.

5 . The coal deactivation processing device according to claim 2 , wherein
a minimum blade length in the radial direction of the feed pipe is from 5 to 45% of a radius of the feed pipe.

6 . The coal deactivation processing device according to claim 3 , wherein
a minimum blade length in the radial direction of the feed pipe is from 5 to 45% of a radius of the feed pipe.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Nakagawa Keiichi
• Omoto Setsuo

Classifications

• C10L9/08

  by heat treatments, e.g. calcining · CPC title

• C10L5/04 Primary

  Raw material {of mineral origin} to be used; Pretreatment thereof {(pretreatment of fuels of non-mineral origin C10L5/40)} · CPC title

• C10L2290/06

  Heat exchange, direct or indirect · CPC title

• C10L9/00

  Treating solid fuels to improve their combustion · CPC title

• C10L9/12

  Oxidation means, e.g. oxygen-generating compounds · CPC title