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Main structural features of dust removal equipment of medium frequency furnace

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Main structural features of dust removal equipment of medium frequency furnace

2019-11-07

Hydraulic station

The dedusting efficiency of the dedusting equipment of the medium frequency electric furnace is high, generally over 99%, and the dust concentration of the gas at the outlet of the deduster is within tens of mg / m3, which has a high classification efficiency for the fine dust with submicron particle size. The bag filter of medium frequency electric furnace equipment has a wide range of air volume treatment, the small one is only 1min m3, the large one is up to 1min tens of thousands of M3, which can be used for industrial furnace flue gas dedusting and reduce the emission of air pollutants. The dust remover of medium frequency electric furnace is simple in structure and convenient in maintenance and operation. Under the premise of ensuring the same high dedusting efficiency, the cost is lower than that of the electrostatic precipitator. The bag filter of medium frequency electric furnace equipment adopts high temperature resistant filter materials such as glass fiber, polytetrafluoroethylene, P84, etc., which can operate at high temperature above 200 ℃. The bag filter of medium frequency electric furnace equipment is not sensitive to the characteristics of dust and is not affected by dust and resistance. Electric control system is adopted for high temperature resistant bag filter of energy-saving medium frequency electric furnace. Low level mobile dust cover, charging car and steel car all have on-site wireless remote control device, which is convenient and practical. The watching system of the dust removal system is responsible for the dust removal and discharge work required by the normal operation of the dust remover and the dust remover; the automatic control task of the protection adopts PLC programmable controller. High reliability, flexibility and compatibility. The off-line dust removal is an effective way to avoid the secondary adsorption of dust, which can greatly improve the efficiency of dust removal. Among them, the dust collector purification bin is designed as a small single room. When the ash cleaning system is running, only one room participates in offline ash cleaning, and the filtering area of one room closed has no effect on the whole system. It can make the dust remover run stably for a long time.

The dust remover of medium frequency electric furnace can be cleaned off-line by continuous pulse, which can solve the problem of long cycle and secondary adsorption. Pulse gas source treatment to solve the condensation problem. Large settling chamber to reduce the resistance of precipitator structure. The medium air inlet mode can make the filter bag load even and extend the average service life of the filter bag. The selection of reasonable filtering wind speed is one of the important parameters to determine the structure of the precipitator, which has a great impact.

Main features of dedusting equipment of medium frequency electric furnace:

1. In the design process, optimize the arrangement of filter bags to reduce the resistance loss of the precipitator.

2. There are protective measures and rainproof measures for the operation part of the equipment.

3. High reliability, low pressure and large specification pulse valve configuration, good back blowing effect.

4. The dust remover of medium frequency electric furnace adopts off-line dust removal, which has better effect than on-line dust removal and no secondary adsorption.

5. Increase the design of pre settlement and temperature equalization at the flue gas inlet of the dust remover of the medium frequency electric furnace equipment to avoid the direct scouring of the flue gas on the filter bag, use the pre settlement to reduce the load of the large particle smoke on the filter bag, reduce the burning of the filter bag, and extend the service life of the filter bag.

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