Effects of moisture content, temperature, and die thickness on the compaction process, and the density and strength of walnut shell pellets
PBN-AR
Instytucja
Instytut Agrofizyki im. Bohdana Dobrzańskiego Polskiej Akademii Nauk
Informacje podstawowe
Główny język publikacji
angielski
Czasopismo
RENEWABLE ENERGY
ISSN
0960-1481
EISSN
Wydawca
PERGAMON-ELSEVIER SCIENCE LTD
DOI
URL
Rok publikacji
2019
Numer zeszytu
Strony od-do
770-781
Numer tomu
142
Identyfikator DOI
Liczba arkuszy
Autorzy
(liczba autorów: 9)
Pozostali autorzy
+ 8
Słowa kluczowe
angielski
Biomass
Thermal treatment
Compression
Specific work
Stick-slip
Streszczenia
Język
angielski
Treść
Compaction of milled walnut shells was carried out at moisture contents of 11.3, 18.3, and 25.3% w.b., material temperatures of 93 C and 106 C, agglomerate lengths, la, of 40, 50, 60, 70, and 80mm and a speed of 100mmmin1. The phenomenon of friction vibrations occurred at the moisture level of 11.3% w.b. when moving the pellets in die. At a higher temperature of 106 vs. 93 C the frequencies of the compaction pressure oscillation were lower e 0.16 and 0.21 Hz, respectively, and their vibration amplitudes were also higher e 0.49 and 0.38 MPa, respectively. The relationship between the pellets' compressive strength and the unit pellet density was an inverse for moisture and temperature, and was coherent for the agglomerate length (i.e. die thickness). The good strengths of the pellets with densities higher than 820 kgm3 were obtained at the moisture level of 18.3% w.b., temperature of 93 C and an la in the range of 60e70 mm. Using the character correlation method, the set of parameters characterising agglomeration and the pellets were limited from twelve to seven. The novelty of this work lies in the application of spectral analysis and the use of the character correlation method.
Inne
System-identifier
PX-5cbec38bd5de5d3851903780
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