Pyrolyzed coal quencher, coal upgrade plant, and method for cooling pyrolyzed coal

Patent metadata

Field	Value
Publication number	US-2016264871-A1
Application number	US-201514641684-A
Country	US
Kind code	A1
Filing date	Mar 9, 2015
Priority date	Mar 9, 2015
Publication date	Sep 15, 2016
Grant date	—

Abstract

A pyrolyzed coal quencher includes: a first water spray tube 79 that sprays water on pyrolyzed coal having a temperature of 300° C. or more obtained after pyrolyzing coal; a first cooling tube 80 that performs indirect cooling on the pyrolyzed coal obtained after spraying water by the first water spray tube 79 to a temperature of 100° C. or more; a second water spray tube 82 that sprays water on the pyrolyzed coal cooled by the first cooling tube 80 such that the pyrolyzed coal has a desired water content; and a second cooling tube 83 that performs indirect cooling on the pyrolyzed coal cooled by the first cooling tube 80 to a desired temperature of less than 100° C. Thus, the pyrolyzed coal can be promptly cooled and adjusted to a desired water content.

First claim

What is claimed is:

1 . A pyrolyzed coal quencher comprising:
a first water spray section for spraying water on pyrolyzed coal having a temperature of 300° C. or more obtained after pyrolyzing coal; and a first cooling tube for performing indirect cooling on the pyrolyzed coal obtained after spraying water by the first water spray section to a temperature of 100° C. or more by a first cooling medium flowing within the first cooling tube.

2 . The pyrolyzed coal quencher according to claim 1 , wherein the first cooling medium has an inlet temperature of 50° C. or more to less than 100° C. when introduced into the first cooling tube.

3 . The pyrolyzed coal quencher according to claim 2 , wherein the first cooling medium is boiler feed water.

4 . The pyrolyzed coal quencher according to claim 1 , further comprising a first rotating vessel for receiving the pyrolyzed coal and rotating about an axis,
wherein the first water spray section and the first cooling tube are installed in the first rotating vessel.

5 . The pyrolyzed coal quencher according claim 1 , further comprising:
a second water spray section for spraying water on the pyrolyzed coal cooled by the first cooling tube such that the pyrolyzed coal has a desired water content; and a second cooling tube for performing indirect cooling on the pyrolyzed coal cooled by the first cooling tube to a desired temperature of less than 100° C. by a second cooling medium flowing within the second cooling tube.

6 . The pyrolyzed coal quencher according to claim 5 , further comprising a second rotating vessel for receiving the pyrolyzed coal and rotating about an axis,
wherein the second water spray section and the second cooling tube are installed in the second rotating vessel.

7 . A coal upgrade plant comprising:
a pyrolyzer for pyrolyzing coal, and a pyrolyzed coal quencher according to claim 1 that cools the pyrolyzed coal pyrolyzed by the pyrolyzer.

8 . A method for cooling pyrolyzed coal comprising:
a first water spraying step of spraying water on pyrolyzed coal having a temperature of 300° C. or more obtained after pyrolyzing coal; and a first cooling step of performing indirect cooling on the pyrolyzed coal obtained after spraying water by a water spray section to a temperature of 100° C. or more by a first cooling medium flowing within a cooling tube.

Assignees

• Mitsubishi Heavy Ind Ltd

Inventors

• Honjo Shintaro
• Kunimune Kiyotaka
• Ito Motofumi
• Asahara Junji

Classifications

• C10B39/04 Primary

  Wet quenching · CPC title

• C10L5/10

  with the aid of binders, e.g. pretreated binders · CPC title

• C10B57/10

  Drying · CPC title

• C10B53/04

  of powdered coal · CPC title

• C10B39/10

  combined with agitating means, e.g. rotating tables or drums · CPC title