Petrographic composition of char from the gasification of coal from the wieczorek mine after combustion introductionGasification is a modern coal processing technology that can be used to replace direct coal combustion with cleaner energy.Gasification enables more environmentally friendly energy generation and is a very flexible technology in terms of the fuels used (Higman and van der Burgt 2008).The development of technology for the gasification of coal from Polish deposits was the subject of the project titled "The Development of Coal Gasification Technology for High Production of Fuels and Electricity" funded by the National Center for Research and Development within the strategic program of research and development entitled: "Advanced Energy Generation Technologies".As a result of this project, coal, dust, and ash samples were obtained.The presented work includes a petrographic analysis of coal from
The article presents the results of the petrographic analysis of the lignite from Turów deposit and the residues formed during its ex-situ gasification. The analysis used seven spot samples, representing different transformation areas, collected from the residues. The obtained results, compared with the lignite before the gasification, have shown that changes in the petrographic composition correspond to the temperature distribution during the process. The highest amounts of gasified particles, represented by inertoid-type chars, were observed in samples collected from areas where the temperature exceeded 600°C. The unchanged lignite macerals dominated in samples from areas where the temperature was below 200°C.
