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Key points regarding the commissioning, operation, maintenance, and management of the equipment: 1. The dust removal system for coal loading on the coke side of the coke oven consists mainly of the following components: ① A coal loading vehicle equipped with a dust removal cover and guide sleeves, along with a dust removal connecting flap mechanism； ②Coke car with dust cover and belt trolley ； ③Belt dust collection duct for the third and fourth tracks of the coke car drive system ； ④Ground pipelines for coal loading and coke holding with balance valves ； ⑤Pulse bag filter ； ⑥Fan, hydraulic coupler, motor system ； ⑦Circulating cooling water system ； ⑧Compressed air system ； ⑨Power supply system ； ⑩Automated control system. 2. Process procedures and operational requirements for coal loading and coke arrest dust removal: This project adopts a system that combines coal loading with coke arrest dust removal, featuring a simple process, reliability, and ease of operation. By alternating between coal loading and coke stopping operations, a single system can carry out dust removal for both tasks simultaneously. Start of coke arrest: While opening the furnace door, start the furnace door dust removal fan and the dust removal valve at the inlet of the coke arrest vehicle. The floor fan should be set to medium-high speed (900 r/min). After pushing out the coke, the coke quenching vehicle must leave promptly to quench the coke in the quenching tower; it is not allowed to remain under the coke stopper vehicle. In the event of a fault, the quench car should be moved away, or its vent valve should be opened, while the inlet dust removal valve should be closed. After pressing the furnace door, stop the dust removal fan for the furnace door and the inlet dust removal valve at the same time, thus completing the coke blocking process. Coal loading begins: the coal loader’s mechanism pushes open the flap valve, connects it to the air duct, opens the cover of the coal loading port, lowers the guiding sleeve, and coal loading starts. Once coal loading is complete, the guiding sleeve is retracted, the cover is closed, and the connection to the flap valve is severed. Adjust the speed of the surface fan to (700~650 r/min). Coal loading proceeds normally; during this process, the pressure inside the coke oven is slightly negative. No smoke or fire emerges from the guide sleeve openings, allowing for coal loading without combustion. If anything goes wrong, the operating conditions of the coke oven need to be adjusted to ensure that the dust removal system functions properly and achieves effective dust removal. The air pressure in the dust removal sleeve of the coal loading port guide sleeve is around –150 Pa (15 mmH2O); this value should be adjusted according to actual conditions. For the valves in the coal loading vehicle’s air ducts and the valve for the cooling air, increase the value of the cooling air valve as long as it still meets the dust removal requirements. (In the event of a system failure, open the relief valve to release pressure.) Coke blocking and coal loading operate simultaneously, and the fan speed should be high (960 r/min). The automatic end-pressure control method is employed to achieve automatic speed regulation in order to meet the air volume requirements for various dust removal conditions. 3. Operation of the dust collector: When new dust removal equipment or newly replaced filter bags are put into use, coke interception dust removal is carried out for 15 cycles first, followed by dust removal during coal loading. This prevents coal dust from clogging the new filter bags and extends their service life. Compressed air for dust removal at 0.6~0.7 MPa. It is used after pressure reduction through the pressure reducing valve on the dust collector; the dust collector operates normally, the offline valve is open, and the resistance of the dust collector is around 1500 Pa. Cleaning is performed when the resistance exceeds 1800 Pa, or cleaning is carried out on a scheduled basis. During dust cleaning, the offline valve is closed, while the corresponding pulse valve operates for blowing. Regularly check the operating condition of the valve and carry out maintenance. Regularly check the condition of the filter bags; once any damage or loss of bags is detected, replace them promptly. The dust collector needs to have its ash removed regularly; the ash is removed from each chamber one by one. When the level of ash in a chamber exceeds the upper alarm level, it is necessary to remove the ash from that chamber. In the event of a malfunction, other methods for discharging ash or shutting down the dust removal system should be considered; the ash transfer equipment should be repaired, and the system can be restarted only after the ash has been removed. Based on the condition of the ash, ash unloading can be scheduled once per shift. 4. Operation of the fan, coupling, and motor: When the fan starts, the air damper is closed, the hydraulic coupling returns to its zero position, the cooling water functions properly, and the compression process proceeds normally. For startup in winter, the oil in the hydraulic coupling can be heated first, and then the motor is started. Once the oil temperature, oil pressure, and bearing temperature are within normal ranges, the fan is gradually started via the hydraulic coupling, and the fan dampers are opened. If the fan vibrates, the bearing shells are problematic, the oil temperature is high, or the oil pressure is too low, it is necessary to conduct inspections promptly to identify the cause; if required, the machine should be shut down for maintenance. 5. The compressed air system features two-stage filtration, air drying equipment, and air tanks. 6. Water supply system: Start the circulating cooling water system before operating the dust removal equipment; do the opposite when shutting it down. In summer, cooling is achieved through cooling towers; in winter, the cooling towers can be omitted, and water enters the tank via bypass pipes. Maintain the quality of the circulating water by adding chemicals and replacing it regularly. 7. Adjustment of the balance valve on the pipeline: Adjust the weight of the balance valve. When the fan is operating at high speed, the coke stopper is in use, and the coal feeding valves are closed, the balance valve should be open; whereas when the air valve on the coke stopper vehicle is opened, the balance valve should be closed. Then it is adjusted in conjunction with the fan speed; the valve on the coke car is closed, and the coal loading flap valve is opened. The fan speed is reduced to around 800 r/min, and the balance valve is closed. The pressure measured in the pipeline is around 1800 Pa. Next, open the air valves on the coke stopper car and the dust removal valves on the coal loading car; adjust the fan speed to 960 r/min. The pipeline pressure measured was (1200–1500 Pa), and this value is the one resulting from the automatic adjustment of the fan speed. 8. Cold air supply valve: When the temperature of the flue gas in the pipeline exceeds 100°C, an alarm is triggered, the cold air supply valve opens, and the cause is investigated along with appropriate measures taken. Regularly check whether the valve is working properly. 9. Computer display of various measurement points and automatic control in the dust removal system 9.1 Computer-displayed control points Number Detection device Measurement range Quantity Requirements Remarks 1 Fan bearing temperature 0～150℃ 2 Display, alarm, shutdown Shutdown when alarm >60℃; shutdown when >70℃ 2 Motor bearing temperature 0～150℃ 2 Display, alarm, shutdown Shutdown when alarm >60℃; shutdown when >70℃ 3 Motor stator temperature 0～150℃ 6 Display; shutdown when >45℃ 4 Inlet temperature of coupler oil 0～150℃ 1 Display, alarm Shutdown when alarm >45℃ 5 Outlet temperature of coupler oil 0～150℃ 1 Display, alarm Shutdown when alarm >90℃ 6 Coupler oil pressure 0～0.4MPa 1 Display, alarm, shutdown Shutdown when alarm