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Horizontal rotary dryer for coal, coal boiler plant, and method for operating coal boiler plant
Horizontal rotary dryer for coal, coal boiler plant, and method for operating coal boiler plant
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机译:用于煤的卧式旋转干燥机,燃煤锅炉装置以及运行燃煤锅炉装置的方法
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摘要
[Problem] To provide a horizontal rotary dryer for coal, which is capable of changing powdered coal to be removed according to coal type.[Solution] A horizontal rotary dryer for coal is provided with a rotating cylinder (10) which has a supply port (41) for coal (C1) and a blowing port (41) for carrier gas (G1) on one end side and has a discharge port (50) for dried coal (C2) and exhaust gas on the other end side, a heating means (11) which heats the coal (C1) in the rotating cylinder (10), and a classification hood (55) which covers the discharge port (50), has a fixed discharge port (57) for the dried coal (C2) in a bottom part (55d), and has a fixed exhaust port (57) for the exhaust gas (G2) in a top part (55u). Said horizontal rotary dryer for coal is provided with an upward flow generation means (58) for generating an upward flow within the classification hood (55), and a flow rate control means (14) for controlling the flow rate of the upward flow, and discharges part or all of powdered coal in the dried coal (C2) from the fixed exhaust port (56) by the upward flow.
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