Methanol is used to purify nitrogen in dry quenching of coke
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Currently, many coking enterprises are carrying out modifications to channel the nitrogen gas generated by methanol air separation into the dry quenching system as a supplement to the air used there. Theoretically, this should help reduce coke loss. In practice, although the proportion of carbon dioxide and the amount of steam produced per ton of coke do decrease, the increased yield of coke dust makes such modifications uneconomical. Additionally, it leads to an increase in pressure in the storage chambers, which affects environmental control during coke loading. I’m curious to know if anyone has any other insights regarding these modifications.
Using methanol to replace nitrogen as an air supplement in the dry quenching process can indeed theoretically reduce coke burn loss, but in practice it may lead to some side effects, such as a decrease in carbon dioxide levels, reduced steam production, increased costs, and higher pressure in the pre-storage chamber during coke loading. These issues may affect the entire production process and environmental standards. It is recommended to conduct a detailed cost-benefit analysis of such modifications, and to consider whether other technologies or methods can achieve the same energy-saving and emission-reduction effects while reducing negative impacts. .
Our company also underwent renovations this year, using waste nitrogen. It stopped for a few months later, and it wasn’t as good as expected