Influence of technological process parameters on qualitative characteristics of coal thermolysis products

Abstract

Purpose. To determine and compare the qualitative and quantitative characteristics of products obtained under different coking conditions to streamline the process and consider the deeper use of recycled materials at Shubarkol Komir JSC. Methodology. Based on the existing coking technology on the basis of the enterprise, two variants of temperature exposure to coal were tested. The first option is heating coal to 900 C, which is carried out by slow thermolysis of coal in a stream of ascending gases. The second option is high-speed heating of coal to 900 C with further loading of the released products into the chamber for additional pyrolysis at 800 C, which is carried out with the development of reactions involving oxygen-containing gases from the furnace and from the outside. Findings. At the production site as well as under laboratory conditions, the composition and quality characteristics of the products of heat treatment of long-flame coal under various temperature effects were determined. Differences in the composition of decomposition products were noted and their quantitative yield was determined. Originality. Analytical data on coking products have been obtained and the dependences of their quantitative and physical parameters on different applications of thermolysis on the coals of the Shubarkol deposit have been established. Practical value. The results of the work allow improving the technology of coke production by introducing an additional stage of pyrolysis, which will lead to an improvement in the consumer properties of coke, and also create conditions for the development of methods for using secondary production products.