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

A pyrolyzed coal quencher comprising:

• a first water spray section supplied with pyrolyzed coal having a temperature of 300° C. or more obtained after pyrolyzing coal, and configured to spray water on the pyrolyzed coal;
• a first cooling tube provided on a downstream side in a flow direction of the pyrolyzed coal with respect to the first water spray section, supplied with the pyrolyzed coal obtained after spraying water by the first water spray section, and configured to indirectly cool the pyrolyzed coal being in contact with an outer periphery of the first cooling tube to a temperature of 100° C. or more by a first cooling medium flowing within the first cooling tube, so that a water content of the pyrolyzed coal is adjusted;
• a second water spray section provided on a downstream side in the flow direction of the pyrolyzed coal with respect to the first cooling tube, supplied with the pyrolyzed coal cooled by the first cooling tube, and configured to adjust an amount of water and spray the adjusted amount of water on the pyrolyzed coal such that the pyrolyzed coal has a desired water content, and
• a second cooling tube provided on a downstream side in the flow direction of the pyrolyzed coal with respect to the second water spray section, the second cooling tube having an overlap with the second water spray section and supplied with the pyrolyzed coal cooled by the first cooling tube, and configured to perform indirect cooling on the pyrolyzed coal to a desired temperature of less than 100° C. by a second cooling medium flowing within the second cooling tube.