| 摘要 |
PROBLEM TO BE SOLVED: To prevent a low temperature corrosion due to corrosive gas and dust, avoid a trouble due to abrasive corrosion and abrasion, require no special operation upon operation and stop and avoid an artificial mistake. SOLUTION: In a dust discharge device for a combustion chamber, a casing 4 made of a fireproof lining is connected to the dust chute 3 of a combustion chamber 1 with its upper part communicating therewith and a casing 5 with a water-cooled structure is horizontally connected to the casing 4. In the casing 4 made of the fireproof lining and the casing 5 with the water-cooled structure, a water-cooled screw conveyor 7 having a shaft 6 in which cooling water flows is arranged. A dust discharge port 9 is provided at the end of the casing 5 with the water-cooled structure.
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