How can tar production be increased, and what are the reasons for low tar production?
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How can tar production be increased, and what are the reasons for low tar production? Our plant uses 7-meter top-mounted coke ovens, with a volatilization content ranging from 23 to 26, averaging around 24-25. The current tar yield is low; what aspects should be considered to find the cause? Is it also related to coal blending, and how should the proportions be adjusted?
The main reason for the low tar yield is volatiles; all other factors are secondary
What is the current tar/coke ratio?
Given a certain level of volatiles, by maintaining a stable furnace temperature and initial cooling temperature, as well as ensuring normal operation of the electrostatic precipitator, oil production will be satisfactory
Firstly: Tar is derived from coal, and once it is produced, it can only exist either in gas or in ammonia – there is no third place where it can be stored. Secondly: test the oil content in gas and the oil content in ammonia water to see whether these two problems can be resolved or not. Once again: since tar is extracted from coal, one needs to consider the volatility of the coal used in its production. It seems that this value is not high enough in your case, and that’s the main reason. Another factor is the operation of the coke oven; its operation has a significant impact on the quality of tar. It’s necessary to test the density of the tar as well as the amount of toluene-insoluble substances – these values must not exceed the national standards. If they do, it indicates that there are issues with the operation of the coke oven, which may lead to the breakdown of the chemical products. You also need to consider: Our company has encountered the same problem; how to explain it clearly to the boss. The boss is okay with it, but it’s difficult to explain things to someone who isn’t familiar with the subject