Mitsubishi Heavy Industries Engineering, Ltd.

Junji Asahara

Shintaro Honjo

Motofumi Ito

Kiyotaka Kunimune

A pyrolyzed coal quencher includes: a first water spray tubethat sprays water on pyrolyzed coal having a temperature of 300&#xb0; C. or more obtained after pyrolyzing coal; a first cooling tubethat performs indirect cooling on the pyrolyzed coal obtained after spraying water by the first water spray tubeto a temperature of 100&#xb0; C. or more; a second water spray tubethat sprays water on the pyrolyzed coal cooled by the first cooling tubesuch that the pyrolyzed coal has a desired water content; and a second cooling tubethat performs indirect cooling on the pyrolyzed coal cooled by the first cooling tubeto a desired temperature of less than 100&#xb0; C. Thus, the pyrolyzed coal can be promptly cooled and adjusted to a desired water content.

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

A coal upgrade plant includes: a dryerthat dries coal; a pyrolyzerthat pyrolyzes the coal dried by the dryer; a quencherthat cools the coal pyrolyzed by the pyrolyzer; a finisherthat deactivates the coal cooled by the quencher; and cyclonesandthat collect pulverized coal generated from the coal, wherein the pulverized coal collected by the cyclonesandis fed to an absorber fed to a scrubberthat treats a flue gas. Thus, the mercury generated from the coal upgrade plant can be removed.

Coal upgrade plant and method for manufacturing upgraded coal

A coal upgrade plant includes: a dryerthat heats and dries coal before pyrolyzing the coal; a scrubberthat treats a carrier gas discharged from the dryerwhile catching a desorbed component desorbed from the coal when the coal is dried by the dryer; a waste water treatment equipmentthat treats waste water collected from the scrubber; and the scrubberthat uses recycled water treated in the waste water treatment equipment. Thus, water supplied to the coal upgrade plant from outside can be reduced as much as possible.

A coal upgrade plant includes a dryerthat heats and dries coal before pyrolyzing the coal, and a scrubberthat treats a carrier gas discharged from the dryerwhile catching a desorbed component desorbed from the coal when the coal is dried by the dryer. The coal upgrade plant further includes a carrier gas circulation paththat guides the carrier gas treated by the scrubberto the dryer. A cycloneis also provided on the upstream side of the scrubber. Thus, mercury and/or mercury-based substances generated in the dryercan be removed.

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New York, NY, United States of America

Junji Asahara