Treatment methods for special furnace conditions in briquette gas production

Thread Content

Methods for Handling Special Furnace Conditions in Briquette Gas Production
1. During normal production, if the coal layer is not high, the downward temperature exceeds the limit while the upward temperature is within range, how to handle it?
Solutions: A. Slightly reduce the speed of the coal feeder; B. Add coal when the downward temperature exceeds the limit; C. After adding coal, perform 1–2 additional full upward blows.

2. During normal production, if the coal layer is too high, both the downward and upward temperatures exceed the limits, how to handle it?
Solutions: A. Open the furnace lid, spread out the coal, and do not add more coal; B. Continue gas production until the upward temperature returns to normal (pay attention to oxygen levels); C. Slightly reduce the speed of the coal feeder; D. Lower the downward temperature by 200°C before adding more coal; E. After adding coal, increase the speed of the coal feeder to discharge more ash; F. Once temperatures return to normal, maintain the current operating conditions.

3. During normal production, what to do if there is a hole in the middle of the furnace?
Solutions: A. Stop the coal feeder and address the furnace condition; B. While fixing the issue, use tree stumps or lumped coal to fill the hole and add coal; C. After adding coal, extend the upward blowing time by 8–10 seconds; D. Keep the upward temperature around 600°C for about 10–20 minutes; E. Then add more coal, followed by increasing the speed of the coal feeder; F. Extend the downward blowing time by 5–8 seconds; G. Add more coal and discharge more ash; H. Gradually adjust the ratio of upward and downward operations back to normal based on temperature readings.

4. During normal production, what to do if ash is discharged only on one side or on neither side?
Solutions: A. If both upward and downward temperatures are normal and the idle periods are acceptable, postpone action and continue normal operation; B. If the downward temperature is low, the upward temperature is normal, the idle periods are acceptable, and there is excessive ash discharge on one side, postpone action and continue normal operation; C. If the downward temperature falls below the specified level while the upward temperature is too high, stop the furnace and open the side door to remove the excess coal.

5. During normal production, if the coal rods are too wet, causing the furnace surface to turn black and reducing air circulation, with high upward temperatures and low downward temperatures, how to handle it?
Solutions: A. After stopping the furnace, level out the coal; B. Do not add coal and allow the furnace surface to burn thoroughly; C. After adding coal, extend the upward blowing time by 1–2 periods.

6. During normal production, what to do if the furnace conditions become unstable?
Solutions: A. Check whether the coal layer is too low; if so, push the coal aside appropriately; B. Check whether the slag layer is too thick or if the pressure in the furnace is too high; increase the speed of the coal feeder if necessary; C. If the air pressure is too high, reduce the air valve setting.

7. During normal production, what to do about the air holes in the furnace?
Solutions: Stop the furnace, fill the holes with lumped coal and compact them, then increase the speed of the coal feeder after adding coal.

8. During normal production, how to control the upward and downward temperatures?
Solutions: Normally, the upward temperature is controlled by adding coal, while the downward temperature is controlled using the coal feeder. The principle is to allow the upward temperature to be slightly higher, but the downward temperature must not exceed the limit.

9. During normal production, if the upward temperature is low while the downward temperature is high, how to handle it?
Solutions: A. If there are no equipment issues, slightly reduce the speed of the coal feeder, switch from automatic to manual mode, and extend the upward blowing time by 2–4 seconds; B. Keep the downward temperature within the acceptable range.

10. During normal production, what to do if coal collapses on one side of the furnace?
Solutions: A. Stop the coal feeder and address the furnace condition; B. Compact the collapsed area and fill it with lumped coal; C. Support the ash hopper on the collapsed side and temporarily suspend ash discharge; D. Restore a proper structure to the ash layer on that side; E. If the downward temperature is too high, extend the upward blowing time by 2–8 seconds; F. At this point, the upward temperature may need to be slightly higher, with the coal feeder operating at a steady pace.

11. During normal production, if the downward temperature is low and the coal layer is thin, how to handle it?
Solutions: Gradually increase the speed of the coal feeder and the amount of coal used, and perform 1–2 additional full upward blows to bring the downward temperature and idle periods back to normal levels.

High-quality coal and high-quality gas are essential. Coal rods should be inserted into the furnace in order. Checking before insertion is crucial. It’s important to dry the coal rods properly. Ensure sufficient heat and proper gas flow. Pay close attention to the height of the coal layer. (Symptom: High upward temperature, low downward temperature.) (Solution: Add coal to regulate temperature; if not, reduce the number of upward blows.) If the furnace surface turns red and the slag layer is thick, prevent further upward movement by increasing downward steam flow. Increase the speed to discharge more ash. If the furnace surface becomes uneven and the coal rods are of poor quality, stabilize the coal layer and reduce the butterfly valve setting. If the coal is too wet, increase the number of upward blows without reducing the load, but decrease the downward blowing time. Each furnace has a different coal layer, resulting in varying gas production resistance. Stabilize the furnace conditions by adjusting the knobs to ensure an appropriate amount of steam inside the furnace. Observe carefully and make fine adjustments. A proper coal layer is key. Do not adjust the steam volume randomly. A standard ratio is less hydrogen and more gas. The intensity of air blowing should match the coal rods. This helps form proper slag layers with less fly ash. High-quality coal and high-quality gas are essential. Coal rods should be inserted into the furnace in order. Checking before insertion is crucial. It’s important to dry the coal rods properly. Ensure sufficient heat and proper gas flow. Pay close attention to the height of the coal layer. (Symptom: High upward temperature, low downward temperature.) (Solution: Add coal to regulate temperature; if not, reduce the number of upward blows.) If the furnace surface turns red and the slag layer is thick, prevent further upward movement by increasing downward steam flow. Increase the speed to discharge more ash. If the furnace surface becomes uneven and the coal rods are of poor quality, stabilize the coal layer and reduce the butterfly valve setting. If the coal is too wet, increase the number of upward blows without reducing the load, but decrease the downward blowing time. Each furnace has a different coal layer, resulting in varying gas production resistance. Stabilize the furnace conditions by adjusting the knobs to ensure an appropriate amount of steam inside the furnace. Observe carefully and make fine adjustments. A proper coal layer is key. Do not adjust the steam volume randomly. A standard ratio is less hydrogen and more gas. The intensity of air blowing should match the coal rods. This helps form proper slag layers with less fly ash