The present-day byproduct coke industry is characterized by a considerable amount of wastes having a large variety of properties, which predetermines the necessity for their utilization. The existing technologies for the utilization of wastes are mostly characterized by excess selectivity, multistage character, complexity of the apparatuses used, considerable capital and operating costs, and limited solvent demand for the products manufactured.The most efficient method of utilization of production wastes for byproduct coke plants seems to be their addition to the coal blend for coking with observation of the requirements that provide the intactness of capital assets and prevent the deterioration of the quality of the end product and of the ecological indices. The following wastes of chemicals-recovery and sulfur-removal rooms may be utilized in this way: tarry wastes - heavy coal-tar products, tar and oils of biochemical installations, coal tar with the coal blend, neutralized acid tar, wastes from the steaming of gaspipelines, sludge from tank cars and chemical apparatuses; solid wastes -naphthalene from foundation pits and cooling towers, ash from the burning of hurdle packings, autoclave refuse from crystallizing crucibles, gaseous sulfur dust; liquid wastes -solution of ballast (inert) salts from the vacuum-carbonate sulfur-removal process.The solution of inert salts from the arsenic-soda sulfur removal process is formed in an amount that does not permit its use for coal blend without the ash and sulfur contents in coke being appreciably impaired. Therefore, other methods of its utilization must be employed.
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