PRODUCTION FUEL GRANULES WITH HIGH QUALITY CHARACTERISTICS FROM LOW-QUALITY WOOD

UDC 674.812

Zharskaya Yana Petrovna – PhD student, Master of Engineering the Department of Woodworking Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus); Head of production of fuel wood pellets. LLC “SWOODS export” (11A, Demina str., 222515, Borisov, Republic of Belarus). E-mail: yana.zarskaya@swse.by

Fedosenko Ivan Gavriilovich – PhD (Engineering), Associate Professor, the Department of Woodworking Production. Belarusian State Technological University (13a, Sverdlova str., 220006, Minsk, Republic of Belarus). E-mail: Ivan.fedosenko@mail.ru

DOI: https://doi.org/ 10.52065/2519-402Х-2023-270-2-24 (In Russian).

Key words: granules, fuel chips, impurities, hydrothermal treatment, fractional composition.

For citation: Zharskaya Ya. P., Fedosenko I. G. Production fuel granules with high quality characteristics from low-quality wood. Proceedings of BSTU, issue 2, Forestry. Nature Management. Processing of Renewable Resources, 2023, no. 2 (270), pp. 210–216. DOI: 10.52065/2519-402Х-2023-270-2-24 (In Russian).

Abstract

The purpose of the study is to test the possibility of using low-quality wood as a raw material to produce fuel pellets with high quality characteristics of class A2 according to the European standard ISO 17225–2:2021. The relevance of the issue of processing low-quality wood is currently quite high. Such wood does not have a positive economic effect, requires disposal costs, and is a large-tonnage wood processing waste. As an experiment, fuel pellets were obtained using softwood fuel chips as raw materials, in which foreign inclusions and a high content of bark were present. The process of obtaining fuel granules was reduced to the removal of foreign inclusions from the raw material, regrinding, hydrothermal processing of the raw material, followed by pressing in a ring matrix to the required density of the granules. To confirm the high quality of the obtained product, its characteristics were compared with the threshold values according to ISO 17225-2:2021. The experiment showed that, subject to a certain production technology, class A2 can be obtained from low-quality fuel chips, the main purpose of which is to obtain thermal energy. The advantage is the fact that there are no requirements for the color of the granules in the technical documentation. This has a positive effect on the production process due to the fact that various types of raw materials can be used without imposing strict requirements on its uniformity, quality and fractional composition.

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References

  1. Drevesina i drevesnyye materialy: sbornik statey [Wood and wood materials: digest of articles]. Krasnoyarsk, 1974. 238 p. (In Russian).
  2. Korobov V. V., Rushnov N. P. Pererabotka nizkokachestvennogo syr’ya (problemy bezotkhodnoy tekhnologii) [Processing of low-quality raw materials (problems of waste-free technology)]. Moscow, Ekologia Publ., 1991. 288 p. (In Russian).
  3. Alekseev I. A. Kachestvennaya otsenka lesov [Qualitative assessment of forests]. Yoshkar-Ola, MarGTU Publ., 2006. 69 p. (In Russian).
  4. ISO 17225–2:2021. Solid biofuels – Fuel specifications and classes – Part 2: Graded wood pellets. Vernier, Geneva, ISO, 2021. 16 p.
  5. Muller O. D. Mathematical model of the wood pellet formation process. Lesnoy zhurnal [Forest Journal], 2015, no. 2, pp. 37–44 (In Russian).
  6. Popov A. N. Issledovaniye protsessa proizvodstva drevesnykh granul s tsel’yu povysheniya ikh energeticheskogo ispol’zovaniya. Dissertatsiya kandidata tekhnicheskikh nauk [Study of the production process of wood pellets in order to increase their energy use. Dissertation PhD (Engineering)]. Moscow, 2016. 151 p. (In Russian).
  7. Thek G., Obernberger I. The pellet Handbook. The Production and Thermal Utillisation of Pellets. London, Washington DC, Routledge, 2010. 593 p.
  8. Skorikova L. A. Obosnovaniye sostava toplivnykh granul i tekhnologii podgotovki drevesnykh opilok dlya ikh proizvodstva. Dissertatsiya kandidata tekhnicheskikh nauk [Substantiation of the composition of fuel granules and technology for the preparation of sawdust for their production. Dissertation PhD (Engineering)]. Yoshkar-Ola, 2012. 152 p. (In Russian).
  9. Andreiko D., Grochowicz J. Studies of H-NMR Relaxation Dispersion in Human Brain-tissue Samples: Implications for Magnetic Resonance Relaxation Dispersion Imaging. Hamburg, Magnus Ljungvall, 2012. 22 p.
  10. Rousset P. Study of again research material: wood, metal, plastic. Zloven, Slovakia, Friedrich and Luible, 2008. 141 p.
  11. Muller O. D. Sovershenstvovaniye tekhnologii proizvodstva drevesnykh granul. Dissertatsiya kandidata tekhnicheskikh nauk [Improving the technology for the production of wood pellets. Dissertation PhD (Engineering)]. Arkhangelsk, 2015. 269 p. (In Russian).
  12. GOST 32159–2013. Corn starch. General specifications. Moscow, Standartinform Publ., 2019. 11 p. (In Russian).
  13. Chibirev O. V., Kunitskaya O. A., Ilyushenko D. A. Experimental studies of pressing pine sawdust on a hydraulic press. Izvestiya Sankt-Peterburgskoy lesotekhnicheskoy akademii [Proceedings of the St. Petersburg Forestry Academy], 2016, no. 217, pp. 87–92 (In Russian).
  14. Swaan J. Best Practices for Fighting and Preventing a Fire in a Wood Pellet Storage Dome or Silo, Washington DC, Future Metrics LLC, 2017. 34 p.
  15. ISO 17831–1:2015. Solid biofuels. Determination of the mechanical strength of pellets and briquettes. Moscow, Standartinform Publ., 2018. 12 p. (In Russian).

20.03.2023