发明名称 |
Method for preventing dust depositions or build-ups in off-gas channels of electrothermal smelting furnaces |
摘要 |
A method for preventing deposits or build-ups of dust in off-gas channels for dust-containing off-gases from electrothermal smelting furnaces. This is done by blowing an additional gas tangentially into the furnace off-gas channels at the positions where build-ups or deposits of dust normally occurs. Hence a gas spiral is provided between the inner wall of the furnace off-gas channels and the dust-containing, hot furnace off-gas. Recirculated and cooled furnace off-gas is preferably used as additional gas. For open furnaces where the furnace off-gas is completely combusted before it enters into the furnace off-gas channels, air can be used as additional gas. The temperature of the additional gas is preferably kept below the sintering temperature of the dust in the furnace off-gas.
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申请公布号 |
US4649807(A) |
申请公布日期 |
1987.03.17 |
申请号 |
US19850710147 |
申请日期 |
1985.03.11 |
申请人 |
ELKEM A/S |
发明人 |
AASEN, TORBJORN;THOGERSEN, BJARNE |
分类号 |
F27D17/00;F27D25/00;(IPC1-7):F23J3/00 |
主分类号 |
F27D17/00 |
代理机构 |
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代理人 |
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