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Investigation of Thermal and Hydraulic Regime of CDCP for Higher Throughput in SAIL Plant

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Abstract

Dry cooling of coke is an effective method of cooling red-hot coke. The unit of a coke oven where red hot coke is cooled with inert circulating gas is known as the coke dry cooling plant (CDCP). The coke from CDCP has very low moisture in the range of 0.3–0.5%. Cold and hot strength properties of coke produced from CDCP are better than from wet quenching. But the limitations of CDCP are its poor performance i.e., low cooling rate, and burning losses. In the present work, the performance of the cooling chamber in different SAIL plants was studied and compared. An effort was made to find the critical parameters that affect the performance of chamber, i.e., cooling rate of coke. It was found that oxygen equivalent is one of the critical factors which affect the performance of chambers. In addition to this, the reasons for coke floating in the chamber were also studied. It was found that the rheological properties of coal blends have a strong relationship with coke strength and have an effect on coke mean size. Reduced coke size causes, coke to float in the chambers which leads to a low discharge rate from the chambers.

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Authors and Affiliations

  1. R & D Centre for Iron and Steel, Ranchi, India

    P. K. Jha, A. Kumar, S. K. Kushwaha & B. Chakraborty

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  1. P. K. Jha
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  2. A. Kumar
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  3. S. K. Kushwaha
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  4. B. Chakraborty
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Correspondence to B. Chakraborty.

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Jha, P.K., Kumar, A., Kushwaha, S.K. et al. Investigation of Thermal and Hydraulic Regime of CDCP for Higher Throughput in SAIL Plant. Coke Chem. 65, 492–499 (2022). https://doi.org/10.3103/S1068364X22700193

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  • DOI: https://doi.org/10.3103/S1068364X22700193

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