Just now, a lot of stuff like waste engine oil was released from the gas main pipe at the bottom of the coke oven?
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It turns out it has happened before. Is this normal? Please give guidance.
There should be a problem with the recycling system.
It should be something like tar residue. It may be that the gas tar mist was not removed well in the past.
It’s best to analyze it to see what ingredients it actually contains. If it is returned to the furnace after desulfurization, it may be sulfur paste or desulfurization liquid. ； If there is tar, it may not be good to cool the tar and catch it. ； Generally speaking, the mist-catching device of the gas purification system before returning to the furnace should be ineffective.
It may also be that there is something wrong with the oil-washing layer and the mist-catching layer of the benzene-washing tower.
I agree with what you said above. If it looks like used engine oil, it should be washed oil.
It should be oil washing. This has also happened in our factory. Even the molybdenum disulfide in the cock was washed away.
The presence of a large area of a mixture of tar, naphthalene, impurities, and water indicates that the end condensate inlet sealing groove pipe is blocked. It needs to be cleared with a skewer in time, otherwise it is easy to cause water in the gas pipe and horizontal row pipe.
1. Check the effect of the electric tar trap. 2. Check the spraying of washing oil. 3. Check the drainage of return gas.
There should be a problem with the recycling system.
It should be oil washing. There won’t be much tar mist after benzene washing. Problems with the mist-catching section of the benzene washing tower may cause a large amount of oil mist to enter the return gas main pipe along with the gas, and then enter the various gas branch pipes to be deposited.
It is a mixture of tar and condensate such as water that has not been removed.
Normally, the return gas purification is not very clean, and the orifice box needs to be cleaned regularly.