Furnace door water-cooled carbon oxygen gun system
the oxygen blowing and carbon spraying operations in electric furnace steelmaking, replacing the traditional manual oxygen blowing and carbon powder addition operations. According to user needs, this system can be manually controlled, PLC controlled, or fully automatic controlled by PLC+upper computer. After adopting this system in electric furnace steelmaking production, the goals of increasing production, reducing consumption, energy conservation, and environmental protection can be achieved.
System advantages:
After adopting the furnace door water-cooled carbon oxygen gun system:
1. Reduce the intensity of manual labor;
2. Reasonable use of oxygen, supersonic oxygen flow effectively cuts and accelerates the melting of scrap steel in the furnace;
3. Enhance the stirring of molten steel slag in the melt pool;
4. The secondary combustion of furnace gas is sufficient; Significant reduction in CO and NOX elimination;
5 Stable foam slag is formed in the molten pool to shield the arc and improve the thermal efficiency of the arc;
6. Reduce the radiation erosion of the arc on the furnace wall, eliminate excessive accumulation of slag blocks on the furnace wall, and improve the service life of the furnace wall.
System technical parameters and operational indicators
Oxygen supply capacity: 1500-3500Nm/h;
Spray hole form: single hole or double hole;
Oxygen outlet velocity: 1.8-2.0 Mach;
Carbon spraying speed: 20-60kg/min;
The thickness of foam slag is more than 350mm;
Shorten the melting period by 10% -30%;
The comprehensive productivity of electric furnaces has increased by 8% -25%
Energy saving of 10-100KWh/t per ton of steel;
Cooling water consumption is 60-100t/h.
1. Main technical parameters
system composition
Furnace door water-cooled carbon oxygen gun system
1. Water cooled carbon oxygen gun; 5. Oxygen supply system (valve station);
2. Carbon powder injection system; 6. Hydraulic system;
3. Hydraulic robotic arm; 7. Water cooling system;
4. PLC control system; 8. Safety alarm and protection system.
Each channel (oxygen, gas) can be individually controlled and regulated, and each gas channel is equipped with a manual switch. The entire valve station has a compact structure, reasonable layout, and a small station area. All gas components on the valve station can be disassembled separately, making maintenance convenient. The reading station is pre assembled, tested, and installed on the sliding base plate before leaving the factory. The oxygen pipeline and valves are made of stainless steel and undergo degreasing treatment. The valves and instruments at the valve station are equipped with all the necessary devices for safe production, including hydrogen shut-off valves, flow control rooms, quick shut-off valves (pneumatic), pressure transmitters, vortex flow meters, check rooms, flame retardants, etc. The system is designed to measure the hydrogen pressure in the pipeline network, monitor the pipeline network pressure in real time, and send the pipeline network pressure data to the central control PLC for timely parameter adjustment during operation.
2. Scope of Supply
| SN |
Item |
Qty |
Remark |
| 1 |
Furnace body |
1 set |
|
| 2 |
Tilting mechanism |
1 set |
|
| 3 |
Water-cooled roof |
1 set |
|
| 4 |
Roof lifting & swivel mechanism |
1 set |
|
| 5 |
Conductive arms |
1 set |
|
| 6 |
Electrode lifting mechanism |
1 set |
|
| 7 |
Cooling water distributor |
1 set |
|
| 8 |
Hydraulic power pack |
1 set |
Proportional valve and pump make: Parker |
| 9 |
Short net |
1 set |
|
| 10 |
L.V. Control system |
1 set |
|
| 11 |
PLC control system & HMI |
1 set |
Siemens S7-300 |
| 12 |
8MVA Furnace transformer with water/oil cooler |
1 set |
|
| 13 |
Compressed air device |
1 set |
|
| 14 |
10kV H.V. switchboard |
1 set |
|
Supplied by the Buyer:
1) Installation and installation material, furnace refractory lining, hydraulic medium, lubrication medium and
cleaning medium, graphite electrodes;
2) Civil works and design (Seller provides furnace foundation drawings and civil work requirements), embedded
furnace foundation parts;
3) Water supply and gas supply main inlet are laid to Seller's equipment connection point, H.V. incoming line is
connected to seller's H.V. switchboard and Transformer terminals, L.V. supply lines are connect to Seller's
L.V. power distribution panel.
3. Delivery: 4 month after date receiving down payment.
Workshop
Sales team:
){kind=link}