Questions about denitration
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The temperature in the small flue of the coke oven is above 350 degrees. Is it possible to install a denitration device along the path from the small flue to the branch flues? What difficulties and issues might arise in this process? Such as corrosion, etc. What is the corrosion effect of ammonia on flues? Can concrete flues resist ammonia corrosion?
You are planning to use SNCR technology, right!
There will be no corrosion at 350 degrees
It’s necessary to figure out what the mechanism of corrosion is!
This year, Jiaonai Institute tried source control at the 5.5M rammed coke ovens of Guizhou Qiangui Tianneng Coking, by using ammonia water injection in the vertical flue (SNCR method) for denitrification. The experiment was very successful, but it couldn’t be scaled up – it’s simple: it’s impossible to drill holes in the furnace roof one by one and install ammonia injection facilities