Dry type mechanical vacuum system and vacuum pumping method for molten steel high-vacuum refining furnace
A vacuum system and mechanical vacuum pump technology, applied in the field of high vacuum for iron and steel metallurgy, can solve the problems of being easily affected by external factors, burning cloth bags of dust collectors, and rising operating temperature of vacuum pumps, so as to eliminate the phenomenon of burning cloth bags, ensure low failure rate, The effect of improving the operating life
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[0053] see Figures 1~4 The present invention relates to a dry mechanical vacuum system for a molten steel high-vacuum refining furnace. The dry mechanical vacuum system for a molten steel high-vacuum refining furnace comprises a molten steel refining furnace 101 and a flue gas cooling primary filter device which are connected in sequence. 1. The flue gas bag-type fine filter device 2 and the mechanical vacuum pump group 3; the molten steel refining furnace 101 is a VD furnace, a VOD furnace or a RH furnace;
[0054] The flue gas cooling and primary filtration device 1 includes a ash cleaning bin 1.1 arranged below, a heat exchange bin 1.2 set above, and a heat exchanger 1.3 set in the heat exchange bin 1.2, and the heat exchanger 1.3 is a welded type Finned tube heat exchanger; the ash cleaning bin 1.1 and the heat exchange bin 1.2 are connected up and down; the side of the ash cleaning bin 1.1 is provided with a flue gas inlet 201; the top side of the heat exchange bin 1.2 i...
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