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
Pending Publication Date: 2020-11-06
JIANGSU HUAXI ENERGY SAVING EQUIP CO LTD
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The invention relates to a dry type mechanical vacuum system and a vacuum pumping method for a molten steel high-vacuum refining furnace. The dry type mechanical vacuum system for the molten steel high-vacuum refining furnace comprises the molten steel refining furnace (101), a flue gas cooling initial filtering device (1), a flue gas bag type fine filtering device (2) and a mechanical vacuum pumpset (3) which are connected in sequence. The vacuum pumping method for the molten steel high-vacuum refining furnace comprises the steps of starting water ring vacuum pumps (304), starting all sets of dry type mechanical vacuum pumps step by step, finally starting a screw type vacuum pump (303) and turning off the water ring vacuum pumps (304). According to the dry type mechanical vacuum system and the vacuum pumping method for the molten steel high-vacuum refining furnace, a filtering and cooling device of a novel structure is adopted, so that the temperature of high-temperature flue gas going into inlets of the vacuum pump set is greatly reduced to meet the use requirement of an RH furnace, and the operating life of the pump set is greatly prolonged. The failure rate is reduced. The high limiting vacuum degree can be reached within a short period of time. The requirement for smelting high-quality special steel is met.
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