What causes black smoke to emerge from coke oven chimneys?
Thread Content
What causes black smoke to come from a coke oven chimney?
Incomplete combustion~ The air excess coefficient is too low. Check whether the amount of gas used is excessive, as well as whether the air valve opening is too small. It’s best to conduct a test on the air excess coefficient promptly; this is not a good situation, and action needs to be taken quickly
Check the sealing of the furnace body to determine whether the smoking is caused by leakage around the furnace walls. When there is too much gas and too little air, incomplete combustion of the mixture can also cause smoking. There are various reasons, such as holes in the furnace wall, leaks in the furnace wall, bricks falling out of the drying holes, low suction in the smoke distribution ducts, high pressure in the gas collection ducts, and negative pressure at the observation holes in the vertical flue
Let’s check if there’s a leak in the furnace wall. Our factory emits black smoke every time the exchange takes place; the exchange time here is 7 seconds. Now we suspect that the short exchange time is causing an excessive amount of air to enter!
If the combustion is incomplete, why does black smoke appear? How is black smoke produced? 2# hotboy3327
Incomplete combustion (that is, too much gas and too little air) or leakage in the furnace body (leakage between the combustion chamber and the carbonization chamber).
The overall reason is incomplete combustion; when there is little air and plenty of gas, black smoke is produced. Why is such a thorough investigation needed?
It is caused by incomplete combustion and excessive suction. It mainly involves adjusting the ratio of air to gas, as well as regulating the suction force at the storage top
Black smoke is carbon. If it’s white smoke, it’s water vapor. 5# Zhou Yi
If the combustion is incomplete, the black smoke consists of small carbon particles resulting from inadequate burning
If black smoke appears during swapping, adjusting the gas stroke can generally solve the problem; upon close observation, the time during which smoke is emitted during swapping corresponds roughly to the time taken for the swapping process