Possibilities of recovery of fine-fraction energy waste from fluidized bed boilers in underground mining for liquidation of underground workings

• Autorzy: Popczyk Marcin

Identyfikatory

DOI

10.17402/542

• Języki publikacji: EN

Abstrakty

EN

Currently, the Polish power industry is mainly based on solid fuels, such as hard coal and lignite, and there is a problem with the management of significant amounts of combustion waste. One of the directions of recovery of these types of waste is underground hard coal mining operations, where the general problem of their management is the variability of physical and chemical properties resulting from the combustion of fuels of different parameters in power boilers with different exhaust gas cleaning solutions, mainly desulphurization methods. One of the solutions for energy production currently in use is the combustion of coal in fluidized bed boilers, in which the so-called dry desulfurization method is adopted. As a result of this process, a fine-fraction waste with the European code 10 01 82 is created, which is characterized by pozzolanic features, enabling its use wherever specific strength parameters are expected from the material. One such technology is the liquidation of underground workings based on the pouring of a hydro-mixture into the fenced-off space of the workings using a gravity-fed pipeline. The space to be filled is fenced off by closing it on both sides with dams, usually made of brick walls, located at an appropriate distance. It should be taken into account that the hydro-mixture will tend to slow the sedimentation of solid particles on the spreading path, and working may have a variable slope. The paper presents the results of laboratory tests of the physical and mechanical properties of hydro-mixtures made on the basis of selected energy waste from a fluidized bed boiler, along with a practical example of its application for the liquidation of underground workings.

Słowa kluczowe

EN

mining; fly ash; by-product utilization; waste management; hydro-mixture

• Wydawca: Wydawnictwo Naukowe Akademii Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Akademii Morskiej w Szczecinie
• Rocznik: 2022
• Tom: nr 72 (144)
• Strony: 133--140
• Opis fizyczny: Bibliogr. 13 poz., rys., tab.

Twórcy

autor

Popczyk Marcin

• Silesian University of Technology in Gliwice Faculty of Mining, Safety Engineering and Industrial Automation 2 Akademicka St., 44-100 Gliwice, Poland

• https://orcid.org/0000-0002-0814-7838

Bibliografia

• 1. Legal Act (2012) Ustawa z dnia 14 grudnia 2012 r. o odpadach. Dz.U. 2013 poz. 21.
• 2. Plewa, F. & Kleta, H. (2001) Application of power generation waste for liquidation of mining workings in mines with high methane hazard. Zeszyty Naukowe. Górnictwo/ Politechnika Śląska 250, pp. 175–185 (in Polish).
• 3. Plewa, F. & Mysłek, Z. (2001) Utilisation of industrial waste in technologies of underground mining. Gliwice: Wydawnictwo Politechniki Śląskiej (in Polish).
• 4. Plewa, F., Popczyk, M. & Mysłek, Z. (2007) Kinds of products generated by power engineering and utilization possibilities of their in underground mining technologies. Polityka Energetyczna 10, 2, pp. 391–402 (in Polish).
• 5. PN-G-11011:1998. Materiały do podsadzki zestalanej i doszczelniania zrobów – wymagania i badania.
• 6. Popczyk, M. (2016) Analysis of physico-mechanical properties of hydromixtures prepared based on ashes from fluidized bed boilers regarding possibilities of liquidation of the underground excavations and cavities. Systemy Wspomagania w Inżynierii Produkcji. Górnictwo – Perspektywy i zagrożenia 1(13), pp. 228–238 (in Polish).
• 7. Popczyk, M. (2017a) Perspective directions of the development of hydrotransport gravity mixers installations in the light of existing industrial solutions. IOP Conference Series: Earth and Environmental Science 174(1), 012012.
• 8. Popczyk, M. (2017b) The impact of changes in the rheological parameters of fine-grained hydromixtures on the efficiency of a selected industrial gravitational hydraulic transport system. IOP Conference Series: Materials Science and Engineering 268(1), 012012.
• 9. Popczyk, M. (2018) Optimization of the composition of fly ashwater mixture in terms of minimizing seepage water and the possibility of gravitational hydrotransport into the underground workings. Gospodarka Surowcami Mineralnymi – Mineral Resources Management 34(3), pp. 151–166.
• 10. Popczyk, M. (2020) Badania wodorządności hydromieszanin wykonanych na bazie wybranych odpadów energetycznych stosowanych w podziemnych technologiach górniczych. In: Bańka, P. (ed.) Bezpieczne i efektywne górnictwo. Wybrane zagadnienia. Gliwice, Poland: Wydawnictwo Politechniki Śląskiej.
• 11. Regulation (2015) Rozporządzenie Ministra Środowiska z dnia 11 maja 2015 r. w sprawie odzysku lub unieszkodliwiania odpadów poza instalacjami i urządzeniami. Dz.U. 2015 poz. 796.
• 12. Plewa, F., Popczyk, M. & Piontek, P. (2009) Application of combustion by-products from fluid bed boilers in hydraulic backfill for mine subsidence control. Polityka Energetyczna 12, z. 2/2, pp. 485–495 (in Polish).
• 13. Popczyk, M. (2021) Tests of strength parameters of hydro-mixtures based on ashes from a fluidized bed boiler in the in-situ approach. Minerals 11, 770.

Uwagi

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu „Społeczna odpowiedzialność nauki” - moduł: Popularyzacja nauki i promocja sportu (2022-2023).