Methods for dealing with special furnace conditions in coal rod gas production

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Methods for dealing with special furnace conditions in coal rod gas production
1. During normal production, if the carbon 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 carbon 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 remove 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 other materials 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 remove more ash; H. Gradually adjust the ratio of upward and downward temperatures back to normal levels.

4. During normal production, what to do if there is no ash on one side or both sides?
Solutions: A. If both upward and downward temperatures are normal and the travel distance is appropriate, wait before taking action and continue normal operation; B. If the downward temperature is low while the upward temperature is normal and the travel distance is appropriate, and there is a long gap on the downward side, wait before taking action and continue normal operation; C. If the downward temperature drops below the specified level while the upward temperature is too high, stop the furnace and open the side door to fix the issue.

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 condition becomes unstable?
Solutions: A. Check whether the carbon layer is too low; if so, move the coal accordingly; 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 wind pressure is too high, reduce it by closing the wind valve.

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

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 one side of the furnace loses coal?
Solutions: A. Stop the coal feeder and address the furnace condition; B. Compact the damaged area and fill it with debris; C. Support the ash hopper on the damaged side to temporarily prevent ash from falling; D. Restore 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 should be slightly higher, and the coal feeder should operate evenly.

11. During normal production, if the downward temperature is low and the carbon 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 travel distance 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 carbon layer. (Symptom: High upward temperature, low downward temperature.) (Solution: Add coal to lower the 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 blowing. Increase the speed of the coal feeder to remove more ash. If the furnace surface becomes uneven and the coal rods are of poor quality, stabilize the carbon layer and reduce the use of the butterfly valve. If the coal is too wet, increase the number of upward blows. Do not reduce the load, but reduce downward blowing. Each furnace has a different carbon layer, resulting in varying gas production resistance. Stabilize the furnace condition by adjusting the knobs. Ensure an adequate amount of steam in the furnace. Observe carefully and make fine adjustments. A proper carbon 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. Ensure proper slag formation and minimize 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 carbon layer. (Symptom: High upward temperature, low downward temperature.) (Solution: Add coal to lower the 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 blowing. Increase the speed of the coal feeder to remove more ash. If the furnace surface becomes uneven and the coal rods are of poor quality, stabilize the carbon layer and reduce the use of the butterfly valve. If the coal is too wet, increase the number of upward blows. Do not reduce the load, but reduce downward blowing. Each furnace has a different carbon layer, resulting in varying gas production resistance. Stabilize the furnace condition by adjusting the knobs. Ensure an adequate amount of steam in the furnace. Observe carefully and make fine adjustments. A proper carbon 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. Ensure proper slag formation and minimize fly ash