Abstract
This work examines the role of various wastes such as pine sawdust, tire crumbs, and hydrochar from pine sawdust in reducing the deleterious impact of high-density polyethylene (HDPE) on coke contraction during coking. Contraction assessed using the Koppers-INCAR test was used as an indirect measurement of coking pressure. The Koppers-INCAR contraction of ternary blends containing coal, HDPE, and one of the other additives was tested together with their devolatilization in a thermobalance. The existence of synergism between the additives was examined to determine whether there were both positive and negative interactions between HDPE and other additives. The temperature corresponding to a 2% conversion increased with the use of additives; this was related to the degree of dangerousness of the blends. In addition, the effect of the additives on coal fluidity and coke quality was tested.
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