Natural gas burnt Lime vertical kiln operation

1. Frequently search for information.

Check the trend trajectory of temperature changes in gas and air zones, as well as the changes in ash discharge time and quality during shift handover. Keep a clear understanding of the operation status of each device.

2. Frequently verify and inspect.

Verify the information obtained by observing the flame color and brightness, the degree of calcination on the lime surface, and the movement and sound of the material column during the discharge from the burner through the peephole on the furnace platform. Observe each burner for about 5 minutes, first in a symmetrical direction, then in a vertical direction, and then change the position during the next discharge to accurately and comprehensively grasp the furnace condition.

3. Diligent analysis and judgment

Based on a comprehensive review of materials and on-site observations, as well as data from various detection instruments, analyze and judge the calorific value of gas from the flame color of the burner; Judging the degree of sintering of the finished product from its surface color, the furnace operation is as follows: under normal circumstances, the material column sinks as a whole every 5 minutes with vibration, and the cutting sound is a deep rustling sound without any impact sound. Otherwise, the furnace condition will be abnormal, with material leakage or local nodules inside the furnace. After analysis and judgment, the cause of the abnormal furnace condition will be identified, and the flow and pressure of gas and air will be adjusted in a timely manner, as well as the ash discharge time.

4. Contact frequently

The stoker must also ensure proper communication between their positions, as well as between the pressure station, gas regulation, and production scheduling. Especially during periods of wind shutdown and resumption, they must have a comprehensive understanding and command.

5. Diligent debugging

The gas kiln implements a system where the main stoker is responsible, and the ash discharge time can only be determined by the current shift's main stoker based on the furnace condition. The leader only has the right to make suggestions. When there is a contradiction between production and quality, the principle is to ensure the longest ash discharge time and the shortest time to prevent lumps in the furnace. The main stoker must be responsible for this. Each stoker has different experiences and abilities, so they should consult with each other more. If they cannot confirm, they should consult with technical personnel to make a correct judgment.

Among the "Five Diligences", diligent analysis and judgment, as well as diligent debugging, are key!