30 Tons EAF Dedusting Removal System Project

• Customization: Available
• Certification: ISO
• Installation Method: Horizontal
• Model NO.: YCKJ_dedusting
• Operation Type: Automatic
• Medium Material: Chemical Synthetic Fiber
• Dust Collecting Method: Dry
• Type: Granular Layer Dust Collector
• Dust Capture Rate: Above 95%
• Amount of Dust Collecting: Above 10kg/T
• Collection Efficiency: Above 95%
• Dedusting Method: Mobile Semi-Airtight Housing
• Transport Package: Container
• Specification: Q235 or 304SS
• Trademark: Yachuang Technology
• Origin: Fuzhou Fujian
• HS Code: 8454309000
• Production Capacity: 20pieces /Year

Product Description

Profile,design principles and index
1.1Profiles

No.	Name	Parameter
1	Smelting equipment	Induction furnace
2	Capacity	3T-80T
3	Quantity

1.2 Design principles
1)On the premise of ensuring that the relevant pollutant emission standards are met,"Reliable operation never affect smelting process and workers' operating habit" is considered as an important design objective.
2)Optimize and design carefully to reduce and save one-time engineering investment.
3)To ensure fire safety, to strive for the advancement of comprehensive benefits, and to fully improve the dust capture rate under the premise of ensuring the emission concentration of pollutant is up to the standard.
4)Ensure long-term stable operation, simple and convenient management.
1.3 Design index

                                                 
Table 1

No	Item	Unit	Design index	Index or policy
				Index	Policy
	Dust capture rate	%	≥95		There is no yellow smoke outside the roof
	Amount of dust collecting	kg/T	≥10
	Emission	mg/Nm^3	≤25	<50
	Collection efficiency	%	>95
	Job dust	mg/m^3	<10	<10	Hygienic Standards for the Design of Industrial Enterprises

Dedusting system's technical process and solution
2.1Dust capture method
Dedusting method for induction furnace:Mobile semi-airtight housing.
3×30T induction furnaces share a set of dedusting system,and adjust the air distribution at each point through the valves on their respective pipelines.
2.2 Process flow
After the flue gas from the feed inlet of induction furnace is collected by the dust hood and passes through the adjusted butterfly valve. The dust enters the bag filter through the dust collecting pipe. At this time, the large particles in the dust are separated by the dust collector by gravity. The large particles enter the dust hopper of the dust collector and the fine particles enter the bag filter. The dust adhered to the surface of the bag is concentrated in the dust hopper of the dust collector through the filter bag filtration and pulse blowing. The dust is recovered or utilized by the controller. The clean air after being treated by the bag filter is discharged through the draught fan. Finally, it is discharged into the atmosphere through the chimney. The dust collected by the bag filter is discharged through the flap valve. The system process is as follows:


The induction furnace dust removal system consists of dust hood, air duct, electronic valve, mixed valve, bag filter, draught fan, chimney and electrical control system. After the smoke and dust from the intermediate frequency furnace were generated by the dust hood, they enter the dust collector through the adjusted butterfly valve and the air inlet pipe ,to collect large particles and play a role of flame retardance. Then, the dust is trapped outside the filter bag by the pulse bag type dust collector. Finally,the dust collected by the dust collector and the bagged dust collector is recycled through the swing valve.
2.3 Air volume determination and distribution

• For 3×30T induction furnace

Table 2

No	Item	Unit	30T induction furnace
1	Quantity	Set	3
2	Capture method method		Semi-airtight housing
3	System exhaust capacity	m^3/h	500000
4	System resistance	Pa	4200
5	Velocity in the pipeline	M/s	16-19
6	Main air blower		Y4 -73No.27D /730 rpm
7	Main drive motor		Y560L1-8/800KW/10V
8	Blower startup		Frequency converter 800KW/10KV
9	Filter area	M^2	6500
10	Filtration velocity	M/min	~1.3
11	Pressure of compressed air	MPa	>=0.4
12	Compressed air consumption	NM^3/min	4
13	Main pipe diameter	mm	Φ3200
14	Chimney diameter×H	mm×m	Φ4000×2