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Processing of chemical waste in coke production at OAO EVRAZ NTMK

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Abstract

Calculation shows that the quantity of chemical waste generated by coke production at OAO EVRAZ NTMK is more than 1000 t per month. Recent changes in coke production that may affect waste generation are considered: the introduction of batch crushing; relining of coke batteries 5 and 6; shut-down of coke batteries 7 and 8; hot repairs at coke batteries 9 and 10; shutdown of the open-hearth shop, where some of the chemical waste had been incinerated; discontinuation of the removal of light pyridine bases from the coke-oven gas in the byproduct-capture shop; the discontinuation of the production of heavy pyridine bases in the tar-distillation shop and their processing in the rectification shop; and the closing of the department of coumarone–indene resins. Recalculated with respect to the batch, the total rate of chemical-waste generation in coke production at OAO EVRAZ NTMK is 0.443%. A complex waste-processing system has been developed: 30% of the total is sent to the coal store and processed with the coal batch in coke ovens; 27% is processed to produce emulsion, which is added to the batch; and 43% is processed with tar, pitch, and raw benzene. Such waste processing at OAO EVRAZ NTMK increases its monthly output by 250 t for coke; 300 t for tar; 880000 m3 for coke-oven gas; and 180 t for commercial products.

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Authors and Affiliations

  1. OAO EVRAZ NTMK, Nizhny Tagil, Russia

    V. R. Rachkov & E. A. Yakusheva

Authors
  1. V. R. Rachkov
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  2. E. A. Yakusheva
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Correspondence to V. R. Rachkov.

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Original Russian Text © V.R. Rachkov, E.A. Yakusheva, 2015, published in Koks i Khimiya, 2015, No. 6, pp. 40–42.

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Rachkov, V.R., Yakusheva, E.A. Processing of chemical waste in coke production at OAO EVRAZ NTMK. Coke Chem. 58, 224–226 (2015). https://doi.org/10.3103/S1068364X15060095

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  • DOI: https://doi.org/10.3103/S1068364X15060095

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