Iron and Steel Plant Dust Collector
Iron and Steel Plant Dust Collector
Dust Removal System Process and Man Technical Parameters.
1, Dust Removal System Process
The steel—making electric furnace dust collector of iron and steel company adopts the combination mode of smoke exhaust in furnace and smoke exhaust outside furnace to purify it more cleanly. The smoke exhaust outside the furnace is composed of closed canopy and roof canopy, which can be used interchangeably. The roof canopy is mainly used in the process of feeding and tapping, and the large closed canopy is mainly used in the smelting process.
The dust removal system of steel—making electric furnace of iron and steel company is mainly composed of smoke exhaust device, water coding closely—spaced tube, forced blowing cooler, inner exhaust fan, buried scraper conveyor, bucket hoist, ash storage bin, main exhaust fan, muffler and so on. The structure is reasonable, and the performance is stable.
2, System Main Technical Parameters
Arc nominal capacity 100t
Smoke exhaust in furnace 27500m3/h( 1400℃)
Smoke exhaust Outside the furnace Closed canopy 400000n13/h(100℃)
Root canopy 460000m3/h( 100℃)
Smoke exhaust volinie from LF furnace S000m3/h( 150℃)
Total air volume of dust removal system 854390rn3/h
Dusl Removal Equinmeri
At present, the electric furnace dust collector of iron and steel company is generally used to deal with electric furnace smoke dust in China. According to the fine and sticky characteristics of electric furnace soot dust, in order to ensure the normal operation of bag dust collector under the appropriate resistance level, the bag dust collector should have strong ash cleaning ability, and LCM long bag low pressure large pulse bag dust collector is selected by Yiheng Dust Removal, This kind of equipment has been widely used in electric furnace steelmaking, blast furnace coal injection, sintering, fire resistance, carbon black, cement and other industries, and good results have been obtained Its main teatures are as follows:
The ability to clear ash is very strong. The ash cleaning strength reaches 60—200 g. which is several times or even dozens of times as much as lhat of the mechanical vibration bag dust collector. For the fine and sticky dust, a good ash removal effect can also be obtained
The tittering load is higher, and the tittering wind speed is as high as 1.5m/min.
The filter bag can be up to 6 m long, which is 2—3 times of the traditional pulse bag type dust collector, and the floor area is smaller.
The injection device is equipped with double fiwn fast pulse valve, which has Ihe advantages of fast opening and closing, smaller resistance, and stronger ash cleaning ability with lower injection pressure.
The maintenance workload is even smaller.
It is convenient to replace and install the filter bag. Because the filter bag is embedded on the chequered plate by the elastic ring sewn at the mouth of the bag , it does not need to tie up. nor does it need to be fastened by the connecting parts such as bolts. When changing the bag. it is carried out on the net air side above the chequered plate, and the contact time between the person and dust bag is short, which greatly reduces the labor intensity of operator when changing the bag.
Equipped with the DMK computer controller developed by Yiheng Dust Removal Eqwpment Co.. Ud. High reliability, complete functions, strong anti—interterence ability to power supply voltage fluctuation, ambient temperature change. dust intluence and other factors, It has been used in many electric fumace dust removal systems, so far working is normal.
M.-un Struc:irci
The dust collector is divided into 24 compartments and is arranged in two rows, with the inlet and outlet main air ducts in the middle. There are partition plates between the storehouse rooms to be tightly separated to achieve off—tine ash cleaning.
The wind board is set between the air inlet of each compartment and the filter bag, and the upper air inlet mode is taken in the box
Manual butterfly valve is installed at the entrance of each compartment, and pneumatic air stop valve is arranged at the outlet. The off-line ash cleaning can be reached, and dust collector can realize the maintenance of a single compartment and the air votixne distribution of each compartment without stopping.
There are 216 titter bags in each storehouse, and the size of the filter bag is 120mm x 6000mm The total quantity of fitter bag in 24 compartments is 5148 PCS. and the total titter area is I 1716m2.
Compared with the circular section, the filter bag tran’ie adopts octagonal star section, which can enhance the ash cleaning effect, reduce the wear between the filter bag and the Frame, help to prolong the life of fitter bag, and tacilitate the extraction and insertion of the filter bag frame.
The material of filter bag selects polyester needle left.
The air shutdown pulse ash cleaning mode is adopted, and a set of injection device is set up in each storehouse, and the injection pipe and the pulse valve outlet adopt plug—in mode to facilitate disassembly and assembly.
