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1. Purpose: The gas generation furnace, combustion chamber, and waste heat boiler in the gas generation system are all lined with refractory bricks to prevent the metal lining from being damaged by heat. The newly laid refractory bricks contain moisture. To prevent cracks and deformations that could occur over time and disrupt normal production, it is necessary to dry these bricks to a certain extent, removing the moisture from both the bricks themselves and the gaps between them. This process causes changes in their crystal structure, enabling them to function properly in high-temperature environments over extended periods. II. Scope of this plan: The gas generation system operates at high temperatures, reaching over 800°C. To prevent damage to the equipment and avoid waste of thermal energy, equipment that requires a fire-resistant lining includes: the lining of the gas generation furnace → dust collector → upper gas duct → combustion chamber → pipelines between the combustion chamber and the waste boiler → the upper and lower ends of the waste boiler. III. Conditions and preparatory work required before furnace drying: 1. Conditions required before furnace drying: (1) The personnel responsible for furnace drying should be familiar with the processes related to their role, the equipment used, as well as this plan; necessary safety facilities and other relevant regulations must also be in place. (2) Installation is complete, the furnace construction is finished, the purging process has been carried out, and the 0.4 MPa steam network is operating normally. (3) Individual tests of the furnace strip machine, dry oil system, power oil system, etc., have been completed. (4) The DCS has been commissioned. 2. Preparations before furnace heating: (1) Contact the instrumentation team to inspect the relevant instruments, especially LC0116 and LC0119. (2) Contact the electrical department to check the wiring and insulation of all electrical equipment, then restore power supply. (3) Transport the waste oil for combustion, firewood and torches, as well as coal cinders to the fourth floor. (4) Prepare fire-fighting equipment as well as other relevant equipment such as lighting. IV. Ignition and furnace heating steps: 1. Open the water supply valves for hydraulic ash removal in the combustion chamber, those for the gas cleaning box, those for the rotary plate dust collector, and those for hydraulic ash removal in the chimney. Supply water to the boiler’s jacket: close the valves connected to the pipeline network, open the drain valve, and supply water until the LC0116 liquid level reaches 60-65%, then close the bypass line. Water filling of the waste boiler: Close the valves in the pipeline network, open the vent valve, maintain the LC0119 liquid level at 60-65%, and close the bypass line. 2. On the first floor, close the valves of all other ash discharge points except the central ash box, and add water to the water seal at the bottom of the furnace. On the second floor, leave the gray door ajar (prop it up with a wooden bar). 4th floor: Open the ignition hole, remove the combustion chamber cover, and take out the large fuel tank. 3. Start the power oil station and activate the oil pump to adjust the pressure to 4.5–5.0 MPa; the circulation water users should have normal operation. Each water seal has an overflow. 4. Check each screen of the DCS, and use a computer to verify the opening and closing status of each valve. 5. Manually operate each oil-driven valve on the DCS, and go to the site to check whether each valve is in its corresponding position: Open: V5, V8, V7-1; Closed: V1, V2, V4, V6, V7-2, V9, V10. 6. Move the coke feeder aside, add ash to the furnace opening – the amount of ash should cover the furnace grate caps by 20–30 centimeters – then place some wood on top of it and light the wood using oil-soaked cotton yarn. 7. Using the same method, add oil-soaked wood in sufficient quantity to burn the coke, and then pour on an appropriate amount of oil. Open the flue to create negative pressure in the furnace. 8. Place the lit torch inside the coke container with the large distributor closed, then open the distributor and light the wood. 9. Record the ignition time, operations, etc. 10. Observe through the ignition hole to confirm that the furnace is on fire, then close the access hatch of the coke drum. 11. Once the fire from the wood is burning vigorously, add coke manually. On the DCS system, switch the feeder to manual mode and feed it for 6–10 seconds. 12 Adjust the size of the central gray box to control the air volume entering the furnace. 13. When combustion in the furnace is normal, continuously adjust the amount of coke and the amount of air supplied to the furnace so that the outlet temperature of the furnace rises at the rate specified by the heating curve. 14. Record every half hour, including: outlet temperature, grate temperature, temperature during combustion, and furnace bottom temperature. Liquid level and pressure of jacketed boilers and waste heat boilers. Generate the actual temperature rise curve on time (based on the gas generator outlet temperature TI0158 and the combustion chamber temperature TI0158). 15. Inspections are carried out every half hour, covering the actual liquid levels and on-site indicated pressures of the jacketed boiler and waste heat boiler, the combustion condition inside the furnace, the gas cleaning box, the chimney, the combustion chamber, as well as the drainage and overflow conditions of the rotary plate dust collector. 16. Turn on the rod machine every four hours and run it at a low speed for 2-3 minutes. 17. After ignition, the temperature is raised at a rate of 10°C/h; after about 15 hours, it reaches 150°C, reaching point B (at this time, the temperature in the combustion chamber is below 120°C and is rising slowly). 18. After reaching 150°C, maintain the temperature for 30 hours (at this point, the temperature in the combustion chamber is below 130°C and shows a slow upward trend). Reach point C, and then increase the temperature at a rate of 10°C/h. 19. During the temperature increase process, the combustion chamber temperature rises at a rate of no more than 10°C per hour; once the combustion chamber temperature reaches 150°C, the focus is shifted to maintaining this temperature for 30 hours. At this point, the temperature at the outlet of the gas generator is close to 400°C. 20. After maintaining a constant temperature in the combustion chamber for 30 hours, the temperature at the outlet of the gas generator was increased at a rate of 10°C/h until it reached 400°C, reaching point D; then the temperature was held constant for 12 hours (during this time, the temperature in the combustion chamber was slightly above 160°C and showed a slow upward trend). 20. Thereafter, controlling the temperature during combustion became the main focus. After the temperature in the combustion chamber approached 160°C, it was increased at a rate of 10°C/h, reaching 350°C after about 19 hours. 21 After the combustion chamber temperature reaches 350°C, it is maintained at this level for 12 hours; thereafter, the temperature is increased at a rate of 15°C per hour over 10 hours to reach 500°C. After arriving at point E after 20.12 hours, the temperature is increased at a rate of 20°C/h until it reaches the operating temperature of 750°C at the outlet of the gas generator. 21. Avoid making too drastic adjustments to the temperature; when a deviation of 2–3°C is observed between the actual temperature and the temperature specified by the heating curve, make minor adjustments promptly. 22. During the furnace drying process, with the relief valve open, once the pressure in the waste heat boiler’s drum reaches 0.1 Mpa, request to connect to the steam network. 23. Once the furnace has been dried, consult the superior to determine whether to turn off the fire; for turning it off, refer to the shutdown procedure, while if it is not turned off, follow their instructions for other actions. 5 Precautions: 1. When the temperature exceeds the specified heating curve, when reducing the temperature one should first observe the condition of the fire. If the fire inside the furnace is too intense, add charcoal to cool it down; if the fire is not intense enough, reduce the air intake appropriately. 2. When heating is required, the focus should initially be on increasing the air intake volume; later in the drying process, the flue can be opened appropriately to facilitate exhaust. 3. Operators shall fulfill their duties and conduct inspections of all items on schedule. 4. The temperature-controlled process allows the drying time to be appropriately extended. 6. Accident handling: 1. During the baking process, if the fire goes out, light a fire at the ignition hole; if lighting fails, open the flue to create suction and clean the bottom of the furnace, as well as open the central ash box. Re-ignite when CO+H2 in the furnace is ≤5%. 2. If there is a roaring sound inside the furnace, increase the exhaust flow and raise the air intake volume on the downward pipeline. 3. In the event of a collapse, explosion, or other serious accidents, the engine should be turned off.