Char feeding hopper, char recovery system, and coal gasification combined power generation system

Patent metadata

Field	Value
Publication number	US-2016237358-A1
Application number	US-201415027321-A
Country	US
Kind code	A1
Filing date	Sep 12, 2014
Priority date	Nov 8, 2013
Publication date	Aug 18, 2016
Grant date	—

Abstract

Provided are a char feeding hopper that makes it possible to accurately measure char, a char recovery system, and a coal gasification combined power generation system. The char feeding hopper comprises: a char feeding hopper body that feeds separated char to a coal gasifier side; at least two casing tubes ( 121, 122 ) that are inserted from a side wall of the char feeding hopper body and that are provided so as to be aligned with one another in the vertical axis direction; a radiation source section ( 101 ) that is provided within the casing tube ( 121 ) and that emits γ-rays within the char feeding hopper body; and a γ-ray detector that is provided within the casing tube ( 122 ) and that detects emitted γ-rays. The cross-section of each casing tube ( 121, 122 ) has a shape that is provided with a tapered section ( 200 ) having an apex angle on the upper edge thereof.

First claim

1 - 7 . (canceled)

8 . A char feeding hopper, comprising:
a char feeding hopper body which supplies separated char to a gasifier side; at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction; a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body; and a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays, wherein a cross-section of each casing tube has a shape which is provided with a tapered section having an apex angle on the upper edge of the casing tube.

9 . The char feeding hopper according to claim 8 ,
wherein an angle between a horizontal surface and a side surface of the tapered section is equal to or more than a repose angle of the char.

10 . A char feeding hopper, comprising:
a char feeding hopper body which supplies separated char to a gasifier side; at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction; a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body; a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays; a nozzle which includes an injection hole on a base end portion opposite to the inner portion side of the char feeding hopper body in a tube base provided on the side wall of the char feeding hopper body; a guide which forms a channel through which inert gas injected from the nozzle is introduced into the inner portion of the char feeding hopper body, wherein the inert gas injected from the nozzle flows along the guide, and blows off the char accumulated on the upper portion of the casing tube.

11 . A char feeding hopper, comprising:
a char feeding hopper body which supplies separated char to a gasifier side; at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction; a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body; a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays; and a char removing portion which removes the char accumulated on the upper portion of the casing tube by injecting the inert gas, and pressurizes the inner portion of the char feeding hopper body.

12 . A char feeding hopper, comprising:
a char feeding hopper body which supplies separated char to a gasifier side; at least two casing tubes which are inserted from a side wall of the char feeding hopper body and are provided so as to be aligned with each other in a vertical axis direction; a radiation source section which is provided within one of at least the two casing tubes and emits γ-rays to the inner portion of the char feeding hopper body; and a γ-ray detector which is provided within the other of at least the two casing tubes and detects the emitted γ-rays, wherein the casing tube is rotatable around a center axis.

13 . A char recovery system comprising the char feeding hopper according to claim 8 .

14 . A coal gasification combined power generation system comprising the char recovery system according to claim 13 .

15 . A char recovery system comprising the char feeding hopper according to claim 10 .

16 . A char recovery system comprising the char feeding hopper according to claim 11 .

17 . A char recovery system comprising the char feeding hopper according to claim 12 .

18 . A coal gasification combined power generation system comprising the char recovery system according to claim 15 .

19 . A coal gasification combined power generation system comprising the char recovery system according to claim 16 .

20 . A coal gasification combined power generation system comprising the char recovery system according to claim 17 .

Assignees

• Mitsubishi Hitachi Power Sys

Inventors

• Miyata Yasuyuki
• Koyama Yoshinori
• Soda Yasuo
• Yamamoto Junichiro
• Nishimura Koji
• Nakayama Naoto

Classifications

• C10J2300/093

  Coal · CPC title

• C10J3/72 Primary

  Other features · CPC title

• C10J2300/1671

  with the production of electricity · CPC title

• G01F23/2885

  for discrete levels · CPC title

• G01F23/288 Primary

  X-rays; Gamma rays {or other forms of ionising radiation} · CPC title