What to do if the tar in the mechanical clarifier cannot be extracted?
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This post was last edited by Desert Poplar on 2011-2-27 at 15:08. Today, it was found that the tar in our plant’s mechanical clarification tank could not be removed, which resulted in a high level of tar in the circulating ammonia solution. But the riser on the coking side is in a terrible situation; we keep dealing with problems related to the nozzles – once one issue is resolved, another blocks up.
I’d like to know that too; please give it a push
The oil inlet below is blocked, or it’s probably due to the high viscosity of the tar in the oil pressure pipe, which results in poor fluidity. It is best to use a thin metal steam pipe to insert and blow through it for cleaning.
You can try adding a temporary steam purge pipe at the oil outlet; use a 6/8 inch iron pipe for its front end to ensure it can reach the bottom. At the same time, pay attention to the level of tar in the mechanical clarifier, as well as any water present in the oil output, and ensure that the liquid level in the mechanical clarifier remains balanced
Reply 3# huachan2006: It keeps scanning. There’s too much mixture of tar dust inside; it’s a hassle.
It’s certain that the viscosity of your tar is very high, which has caused blockage at the outlet of the tar level regulator. Here are a few suggestions: 1. The problem lies in the operation of the coke oven; most likely, the excessive temperature in the coke oven leads to the breakdown of large molecular clusters in the gas, thereby increasing the viscosity of the tar. It is estimated that its viscosity is at least 1.2 kg/m3. 2. Add steam at the outlet of the tar ship for purging. 3. Ensure good insulation for the tar ship; it is best to keep its temperature within the range of 65–75°C.
Reply to 6# leo1987927: Well, 2 or 3 of your suggestions are correct; but for the first one, I think it’s related to the coal – high ash content is also a very important factor. The average temperature in the coke oven is only around 1150 degrees. High-temperature phenomena are rare.
At first I thought the third floor was the right answer, but after hearing what the original poster said, it seems like your scraper isn’t working very well.
Reply to 8# penti: Yes, the tar scraped out by our scraper still contains a lot of water
What is the reduction ratio of your reducer? How many meters per second does the scraper conveyor move? It seems like the speed is too high based on what I hear
Does your facility use rammed coke ovens to produce coke?