- The exhaust gas temperature of the two chambers is different
reason:
(1) Cooling air distribution error.
(2) The amount of stone added in the two chambers is different.
(3) The fuel supply of the two chambers is different.
(4) The amount of combustion air in the two chambers is different.
(5) Calcination with lumps.
handle:
(1) Set the reasonable value of cooling air distribution.
(2) Check the stone weighing system and charging system.
(3) Check that the spray gun is blocked.
(4) Check the reversing ram, replace the rubber ring of the reversing ram, and check the leakage point of the air supply system.
(5) Reduce heat input.
Magnesia brick for lime kiln.
- The ash temperature of the two chambers is different or too high
reason:
(1) Unreasonable distribution of cooling air.
(2) The quality of lime is different.
(3) Calcination with lumps.
(4) The discharge hydraulic cylinder of the discharge platform is broken.
handle:
(1) Adjust the cooling air distribution properly.
(2) Adjust the parameters to improve the quality.
(3) Evenly reduce heat input.
(4) Check the discharge platform.
- The materials in the kiln do not move downward
reason:
(1) The upper temperature of calcination zone is too high.
(2) No material is discharged when the kiln is stopped.
(3) The materials in the calcination zone agglomerate and stick together.
(4) Discharge table failure.
handle:
(1) Adjust the combustion excess air coefficient.
(2) The solution is to repeatedly boost and relieve pressure.
(3) Reduce heat input.
(4) Check the discharge system.
- Clogged spray gun
reason:
(1) The upper temperature of calcination zone is too high.
(2) The fuel is easy to coke or the moisture is too high to agglomerate.
(3) Sticky kiln, local temperature is high.
handle:
(1) Adjust the combustion excess air coefficient.
(2) Adjust the fuel process.
(3) Treatment of sticking kiln.
- Two chambers of lime unburned
reason:
(1) Insufficient heat.
(2) Too much cooling air.
(3) Uneven distribution of cooling air.
(4) The calcination zone is too high.
(5) The stone is unqualified.
(6) The upper and lower temperatures of the calcination belt are different.
(7) The cross section temperature of calcination zone is different.
(8) The stone particle size is uneven.
handle:
(1) Increase the heat input when you are sure there is no other reason.
(2) Reduce cooling air.
(3) Set the appropriate central cooling air rate.
(4) Raise the material level.
(5) Select qualified stones.
(6) Adjust the excess air coefficient.
(7) Adjust the fuel distribution.
(8) Select the appropriate stone.
- A chamber of lime is under burnt
reason:
(1) The charging amount of the two chambers is different.
(2) The amount of fuel in the two chambers is different.
(3) The amount of combustion air in the two chambers is different.
(4) Uneven distribution of cooling air between the two chambers.
handle:
(1) Correct the stone weighing and feeding system.
(2) Check the blockage of the spray gun.
(3) Check the sealing of the combustion air reversing ram and check the pipeline for leaks.
(4) Adjust the cold air distribution.
- Uneven lime quality on the discharge table
reason:
(1) The upper and lower temperatures of the calcination belt are different.
(2) Calcination with lumps.
(3) The distribution of cooling air is unreasonable.
(4) Unreasonable stone distribution.
(5) The channel is blocked.
handle:
(1) Check the spray gun and delivery pipe for blockage and check the fuel supply of each chamber.
(2) Check for overburning and reduce fuel if necessary.
(3) Set the appropriate central cooling air rate.
(4) Adjust the stone distribution.
(5) Clear the passage.
- Operating pressure too high
reason:
(1) Too much air.
(2) Too much heat input.
(3) Burnout time is too long.
(4) The release time is too long.
(5) The stone grade difference is large.
(6) The passage is blocked.
(7) The kiln bore is nodulated.
handle:
(1) Reduce the total amount of air if possible.
(2) Reduce heat input if possible.
(3) Reduce burnout time if possible.
(4) Reduce commutation time.
(5) Reduce the stone grade difference.
(6) Clear the passage.
(7) Deal with the tumor.
- Operating pressure too low
reason:
(1) Leakage of kiln body or air pipe.
(2) Not all selected fans work normally or some fans fail.
(3) Poor sealing of kiln.
handle:
(1) Check the leakage point.
(2) Check all fans and all connecting devices, such as check valve, pressure relief valve and soft connection.
(3) Check the sealing rubber ring and replace it.
- Calcination temperature too high
reason:
(1) Too much heat input.
(2) The particle size of stone is too large.
(3) Unreasonable adjustment of excess air.
(4) Stone lumps.
handle:
(1) The solution is to reduce the heat input.
(2) The way is to change the stone.
(3) Adjust excess air properly.
(4) Reduce heat input.
- Calcination temperature too low
reason:
(1) Too little heat input.
(2) Unreasonable adjustment of excess air.
handle:
(1) Increase the heat input when it is confirmed that there is no other reason.
(2) Adjust excess air properly.