Puulehtedest graanulite tootmine
Laen...
Kuupäev
2024
Kättesaadavus
03.09.2024
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Graanulite tootmine ja tarbimine kütusena on järjest rohkem populaarsust kogumas. Raiemahtude vähendamine suurendab metsast saadava materjali nõudlust ning hinnatõusu saematerjalidele kui ka erinevatele puitkütustele. Katsetatakse erinevaid alternatiive sooja tootmisel ning otsitakse võimalusi biomassi efektiivsemaks väärindamiseks.
Lõputöö eesmärgiks oli uurida (katsemeetodil) puulehtede-, kase- ja okaspuu saepuru massist toodetud erinevate koostistega graanulite mehaanilist tugevust ja kütteväärtust. Töö käigus toodeti 8 erineva koostisega pelletid.
Praktiline töö ja analüüs viidi läbi Eesti Maaülikooli puitkütuste laboris, graanulite pressimine ettevõttes Genetrade OÜ ning graanulite mehaanilise tugevuse leidmine AS Palmako Kavastu tehases.
Puulehtedest on võimalik graanuleid toota. Lehemassi ja saepuru segamisel saadakse paremaid kvaliteedinäitajaid kui puhtal lehemassil.
Kokkuvõttes töö eesmärk saavutati ning saadud tulemused võivad olla kasulikeks lähteandmeteks biomassi edasiseks granuleerimiseks.
The production and consumption of pellets as fuel are gaining increasing popularity. The reduction in logging volumes increases the demand for forest-derived materials and raises the prices of both lumber and different wood fuels. Various alternatives for heat production are being tested, and efforts are being made to find ways to utilize biomass more efficiently. The objective of this thesis was to study (using experimental methods) the mechanical strength and calorific value of pellets produced from different compositions of wood leaves, birch sawdust, and conifer sawdust. During the work, 8 different composition pellets were produced. The practical work and analysis were carried out at the wood fuel laboratory of the Estonian University of Life Sciences, pellet pressing was performed at Genetrade OÜ, and the mechanical strength of the pellets was determined at AS Palmako´s factory in Kavastu. It is possible to produce pellets from tree leaves. By mixing leaf mass with sawdust, better quality indicators are obtained than with pure leaf mass. In conclusion, the goal of the work was achieved, and the obtained results may serve as useful baseline data for the further pelletizing of biomass.
The production and consumption of pellets as fuel are gaining increasing popularity. The reduction in logging volumes increases the demand for forest-derived materials and raises the prices of both lumber and different wood fuels. Various alternatives for heat production are being tested, and efforts are being made to find ways to utilize biomass more efficiently. The objective of this thesis was to study (using experimental methods) the mechanical strength and calorific value of pellets produced from different compositions of wood leaves, birch sawdust, and conifer sawdust. During the work, 8 different composition pellets were produced. The practical work and analysis were carried out at the wood fuel laboratory of the Estonian University of Life Sciences, pellet pressing was performed at Genetrade OÜ, and the mechanical strength of the pellets was determined at AS Palmako´s factory in Kavastu. It is possible to produce pellets from tree leaves. By mixing leaf mass with sawdust, better quality indicators are obtained than with pure leaf mass. In conclusion, the goal of the work was achieved, and the obtained results may serve as useful baseline data for the further pelletizing of biomass.
Kirjeldus
Rakenduskõrgharidusõppe lõputöö
Puidutöötlemise tehnoloogia õppekaval
Märksõnad
lõputööd, lehegraanul, biomass, mehaaniline tugevus, tuhasus, kütteväärtus, Roheline Ülikool (töö toetab EMÜ Rohelise Ülikooli põhimõtteid), energiavarustus, alternatiivenergia