The flue gas desulfurization and denitrification exhaust stack once again emitted black smoke for a few minutes
Thread Content
The coke oven is operating normally, but the exhaust stack used for desulfurization and denitrification of the coke oven smoke began to emit black smoke again for a few minutes; I’m not sure what the cause is. Could everyone here help analyze this?
Is it at the moment of commutation?
Based on the situation you described, it is indeed true that the dust levels are not up to standard. The possible reasons for this phenomenon are as follows: The desulfurization and denitrification absorption towers have not been cleaned for a long time, which has led to a significant decline in their performance; as a result, their absorption efficiency has greatly decreased； No effective desulfurization and scale-inhibition agents have been added; only desulfurization enhancers ； The desulfurization absorption tower is too small to meet the desulfurization requirements
If black smoke is emitted for a short period during coke oven desulfurization and denitrification, it may be related to the reversing of the coke oven； Excessive black smoke over a long period may be caused by the failure to discharge the concentrate after prolonged operation