添加牛皮纸木质素和淀粉对松属颗粒质量的影响。

Quality of Pinus sp. pellets with kraft lignin and starch addition.

机构信息

Departamento de Engenharia Florestal, Universidade Federal de Viçosa, Viçosa, 36570-900, Brazil.

Instituto de Ciências Agrárias, Universidade Federal de Uberlândia, Monte Carmelo, 38500-000, Brazil.

出版信息

Sci Rep. 2021 Jan 13;11(1):900. doi: 10.1038/s41598-020-78918-7.

DOI:10.1038/s41598-020-78918-7

PMID:33441628

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7807050/

Abstract

Pellets are widely used for power generation because they use renewable raw material with easy storage, transport and high energy density. However, the structural fragility, disintegrating during handling, transport and storage, is one of the main problems of pellets, but the addition of binders/additives can minimize this fragility. The objective of this study was to evaluate the properties of wood pellets with the addition of starch (corn and wheat) and kraft lignin in different proportions. Pellets were produced with the addition of starch (wheat and corn) and kraft lignin in the proportions of 1, 2, 3, 4 and 5% in relation to the mass of wood particles of Pinus sp., with 12% moisture (dry basis), classified in 3 and 1 mm sieves and compacted in a pelleting press in the laboratory, according to European standard EN 14961-2. Physical and mechanical properties of the pellets were evaluated and their densitometric profiles obtained from the Faxitron LX-60 X-ray equipment. Corn starch and kraft lignin additives at 4% improved pellet properties (density, fines and hardness), reducing their losses during handling, storage and transport.

摘要

颗粒广泛用于发电，因为它们使用可再生原料，具有易于储存、运输和高能量密度的特点。然而，颗粒在处理、运输和储存过程中结构易碎、容易解体，是颗粒的主要问题之一，但添加粘合剂/添加剂可以最小化这种易碎性。本研究的目的是评估添加不同比例淀粉（玉米和小麦）和 kraft 木质素的木屑颗粒的性能。通过在 Pinus sp. 木屑颗粒中添加 1%、2%、3%、4%和 5%（相对于木屑颗粒质量）的淀粉（小麦和玉米）和 kraft 木质素，制得颗粒，含水量为 12%（干基），并根据欧洲标准 EN 14961-2 通过 3 和 1mm 筛进行分类，在实验室中使用 pelleting press 进行压缩。对颗粒的物理和机械性能进行了评估，并从 Faxitron LX-60 X 射线设备获得了其密度图谱。添加 4%的玉米淀粉和 kraft 木质素添加剂可以改善颗粒的性能（密度、细粉和硬度），减少在处理、储存和运输过程中的损失。