Coke oven gas

The carbon recovery unit, the white side of a coking plant, has the task of separating the carbon values contained in the raw gas produced from it using various processes. The most important recyclable materials are tar, benzene, ammonia, sulphur and rhodanic acid. 

The hydrotropic acid (thiocyanic acid) is refined to rhodanic salts in one process step. The partially cleaned, but still toxic coke oven gas required for this purpose is fed to the rhodan scrubber by a diaphragm compressor at a pressure of 6 to 7 bar. 


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