Rotary kiln preheater malfunction phenomenon: preheater collapse
Rotary kiln and preheater malfunction phenomenon: preheater collapse
Causes: 1. Thetotal amount of exhaust air suddenly dropped; 2. The cone negative pressuresuddenly decreased; 3. The kiln tail temperature decreased greatly; 4. The kilnhead negative pressure decreased, positive pressure
Treatment method:Large stocks are dealt with by running raw materials, and small stocks can beappropriately increased by kiln feeding or without treatment.
Rotary kiln andpreheater failure phenomenon:
Reasons: 1.Thekiln current rises quickly in a short time; 2.The kiln skin is visible in thekiln; 3. Local high temperatures may occur.
Treatment methods:1. Adjust the flame high temperature point, so that the flame is smooth, thekiln heat negative pressure should not be too high; 2.Appropriately reduce thespeed of the kiln, the kiln speed can be slowly restored when the kiln isnormal; 3. Adjust the body cooling fan
Rotary kiln andpreheater malfunction phenomenon: preheater cone clogging
Causes: 1.Long-term hurricane under the flap valve, under the cone skin; 2. Pulverizedcoal is not fully burned, the viscosity of the material increases, graduallyaccumulates in the cone, did not clear in time; 3 cone negative The pressure isdrastically reduced, the feeding temperature drops, and the outlet temperaturerises.
Treatment method:The blocking material has already stopped the kiln according to the sequence ofstopping the kiln. It is forbidden to handle the blocking material andartificially plug it within 4 hours after stopping the kiln.
Rotary kiln andpreheater malfunction phenomenon: large error in temperature indication
Reasons: 1.Thethermocouple was stuck by the material; 2.The thermocouple was blown.
Treatment methods:1. Clean up the material; 2. Replace the thermocouple.
Rotary kiln andpreheater malfunction phenomenon: low pressure indicator
Reasons: 1.Thepressure tube is blocked by dust; 2. Cyclone tube material
Treatment methods:1. Blow the pressure tube with compressed air; 2. Purge the cone of the cyclonewith compressed air.