What causes the coke produced in the carbonization chamber to emit black smoke?
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What is the reason for black smoke emanating from the coke produced in the carbonization chamber, and why is it necessary to wait until no black smoke is present before sending the coke to the CDQ?
Black smoke during coke pushing indicates that the coke has not matured properly; the black smoke contains a lot of tar and coke dust.
Could the person upstairs explain it in more detail?
This is typical charring! Or there is localized charring! There might be a problem with the heating regime!
Black smoke indicates that the maturity of the coke is insufficient. The poster can check whether smoke comes from the entire coke cake or from both ends; in the former case, it is necessary to increase the overall temperature of the furnace, while in the latter case, the temperature at the furnace inlet needs to be raised. The introduction of raw coke into the dry quenching furnace increases components such as CO/H2 in the circulating gas, which not only raises safety risks for the system but also increases the coking loss rate.
Black smoke is caused by insufficient coking maturity; extend the coking time appropriately and check the condition of the gas used for reheating in the furnace. In some places, the rising pipe flap is sometimes opened to air out the coke. Here, we encountered a situation where the gas nozzle was blocked by backflow gas; this was resolved through manual cleaning and checking of the gas flow process.
Black smoke during coke pushing indicates that the coke has not matured properly; generally, the coke is underdeveloped in the middle while it is less so at the ends, and the black smoke contains a lot of tar and dust.
If thick black smoke is emitted, it means the coke isn’t fully cooked; generally, before the coke guide grid reaches the forward end, you can check the color of the coke. Generally, there is no fully cooled furnace; when the door crane is used to remove the furnace door, some coal will flow out from the bottom of the furnace!
It is caused by unburned coke; check whether the heating regime is appropriate.