Address: 17 Naberezhnaya Severnoy Dviny, Arkhangelsk 163002 Russian Federation. Northern (Arctic) Federal University named after M.V.Lomonosov. Office 1425

Phone / Fax: (818-2) 21-61-18
E-mail: forest@narfu.ru
http://lesnoizhurnal.ru/en/

RussianEnglish



Archive

Mathematical Model of the Pressing Process of Thermally-Modified Tree Bark in the Drum-Type Press-Granulators

Версия для печати
Creative Commons License
These works are licensed under a Creative Commons Attribution 4.0 International License.

O.D. Myuller, V.I. Melekhov, N.G. Ponomareva, T.V. Tyurikova, M.O. Khrustaleva

Complete text of the article:

Download article (pdf, 0.7MB )

UDС

UDС 674.08

DOI:

10.17238/issn0536-1036.2017.2.130

Abstract

The involving tendency of wood waste as an environmentally friendly fuel in heat and power balance, emerging in the world and domestic practices, is becoming increasingly important. The timber industry enterprises produce large amounts of waste wood, 10...15 % of which is the tree bark. The most promising method of the use of this renewable energy resource is the wood pellets production. The process of pellets obtaining from stem wood is well developed, but their production from bark involves some technical difficulties (dehydration and bark disintegration, ground bark pressing through the cylindrical matrix nozzles of the roll-type press-granulators). The initial heat treatment of bark (thermal modification) solves the problems of its dehydration and mechanical disintegration to the constant consistency for further granulation. The theoretically grounded mathematical model describing the pressing process of disintegrating wood in the roll-type press-granulators with a cylindrical
matrix, which could optimize the design and technical and energy pressing parameters,
is not developed in the world and national literature. The goal of research is to develop
a mathematical model of the pressing process of thermally-modified tree bark, which would allow determining the connection of design parameters of a pressing component and the required qualities of wood pellets with the energy consumption in the roll-type pressgranulators with a cylindrical matrix. The technological pressing process from bark in the convergent film between the inner perforated cylindrical surface of a matrix and the outer cylindrical surface of a pressing roller is considered; the physical processes in the areas of pellet forming and ejecting from a nozzle are analyzed. We obtained a reasonable mathematical model of the charge pressing process from bark through a cylindrical matrix as well as the dependencies connecting the energy expended to drive the press-granulator with the design parameters of a pressing component and the charge physical and technological parameters from bark.

Authors

O.D. Myuller, Doctor of Engineering Sciences, Associate Professor V.I. Melekhov, Doctor of Engineering Sciences, Professor N.G. Ponomareva, Postgraduate Student T.V. Tyurikova, Master M.O. Khrustaleva, Engineer

Affiliation

Northern (Arctic) Federal University named after M.V. Lomonosov, NaberezhnayaSevernoy Dviny, 17, Arkhangelsk, 163002, Russian Federation; e-mail: ockar@mail.ru,n.ponomareva@narfu.ru

Keywords

thermally-modified tree bark, press-granulator, matrix, nozzle, granule, compactingpressure, mathematical pressing model

For citation

Myuller O.D., Melekhov V.I., Ponomareva N.G., Tyurikova T.V., Khrustaleva M.O. Mathematical Model of the Pressing Process of Thermally-Modified Tree Bark in the Drum-Type Press-Granulators. Lesnoy zhurnal [Forestry journal], 2017, no. 2, pp.130– 148. 10.17238/issn0536-1036.2017.2.130

References

1. Bulatov A.S. Razrabotka protsessa pressovogo granulirovaniya melkodispersnykh sred na primere mineral'nykh poroshkov i drevesnykh otkhodov: avtoref. dis. … kand. tekhn. nauk [The Process Development of Press Granulation of Fine Media by the Example of Mineral Powders and Wood Waste: Cand. Eng. Sci. Diss. Abs.]. Moscow, 2012. 15 p.
2. Il’yushenko D.A. Razrabotka tekhnologii proizvodstva briketov iz otkhodov okorki: aftoref. dis. … kand. tekhn. nauk [The Development of Briquettes Production Technology from Bark Residue: Cand. Eng. Sci. Diss. Abs.]. Saint Petersburg, 2012. 19 p.
3. Korshak A.V. Obosnovanie tekhnologii proizvodstva drevesnykh briketov na pressovom oborudovanii udarnogo tipa: avtoref. dis. … kand. tekhn. nauk [Substantiation of Wood Briquettes Production Technology at the Impact Pressure Equipment: Cand. Eng. Sci. Diss. Abs.]. Saint Petersburg, 2011. 20 p.
4. Levin A.B. Bioenergetika – vazhneyshee sredstvo povysheniya energoeffektivnosti lesnogo kompleksa Rossii [Bioenergy - Important Means of Increasing Energy Efficiency of Forest Complex of Russia]. Lesnoy vestnik [Forestry Bulletin], 2012, no. 8(91), pp. 160– 165.
5. Modin N.A., Eroshkin A.N. Briketirovanie izmel'chennoy drevesiny i drevesnoy kory [Briquetting of Chopped Wood and Bark]. Moscow, 1971. 112 p.
6. Myuller O.D., Melekhov V.I., Lyubov V.K., Gerasimchuk D.L., Popov A.N. Vliyanie tekhnologicheskikh parametrov pressovaniya na otnositel'nuyu plotnost' toplivnykh drevesnykh granul [Dependence of Compacting Technological Parameters on Relative Density of Wood Fuel Pellets]. Lesnoy zhurnal [Forestry journal], 2013, no. 1, pp. 116–121.
7. Myuller O.D., Melekhov V.I., Lyubov V.K., Tyurikova T.V. Matematicheskaya model' protsessa formirovaniya drevesnykh granul [Mathematical Model of Wood Granules Formation]. Lesnoy zhurnal [Forestry journal], 2015, no. 2, pp. 104–122.
8. Samul' V.I. Osnovy teorii uprugosti i plastichnosti [Fundamentals of the Theory of Elasticity and Plasticity]. Moscow, 1982. 264 p.
9. Chuvaeva A.I., Bozhko I.V. Ispol'zovanie biotopliva s tochki zreniya utilizatsii otkhodov lesopil'nogo proizvodstva [The Use of Biofuels in Terms of Sawmill Residues Utilization]. Aktual'nye problemy lesnogo kompleksa, 2007, no. 18, pp. 156–159.
10. Ciolkosz D., Wallace R. A Review of Torrefaction for Bioenergy Feedstock Production. Biofuels, Bioproducts, and Biorefining, 2011, no. 5(3), pp. 317–329. doi:10.1002/bbb.275.
11. Holm J.K., Henriksen U.B., Hustad J.E., and Sorensen L.H. Toward an Understanding of Controlling Parameters in Softwood and Hardwood Pellets Production. Energy and Fuels, 2006, 20(6), pp. 2686–2694.
12. Kaliyan N., Vance Morey R. Factors Affecting Strength and Durability of Densified Biomass Products. Biomass and Bioenergy, 2009, no. 33(3), pp. 337–359.
13. Krizan P., Matus M., Beniak J., Kovacova M. Stabilization Time as an Important Parameter after Densification of Solid Biofuels. Acta Polytechnica, 2014, no. 54(1), pp. 35–41. 10.14311/AP.2014.54.0035.
14. Krizan P., Matus M., Soos L., Kers J., Peetsalu P., Kask ?., Menind A. Briquetting of Municipal Solid Waste by Different Technologies in Order to Evaluate Its Quality and Properties. Agronomy Research, 2011, no. 9(1), pp. 115–123.
15. Krizan P., Soos L., Vukelic Dj. Counter Pressure Effecting on Compacted Briquette in Pressing Chamber. Journal of Production Engineering, 2009, vol. 12, no. 1, pp. 63–66.
16. Rhen C., Ohman M., Gref R., Wasterlund I. Effect of Raw Material Composition in Woody Biomass Pellets on Combustion Characteristics. Biomass and Bioenergy, 2007, no. 31, pp. 66–72. Received on December 23, 2016


Mathematical Model of the Pressing Process of Thermally-Modified Tree Bark in the Drum-Type Press-Granulators

 

Make a Submission


ADP_cert_2024.png

Lesnoy Zhurnal (Russian Forestry Journal) was awarded the "Seal of Recognition for Active Data Provider of the Year 2024"

INDEXED IN: 

scopus.jpg

DOAJ_logo-colour.png

logotype.png

Логотип.png