Integrating carbonization and pelletization becomes an attractive technology for energy usage of biomass resources. But challenges still remain for the densification of carbonized biomass. Firstly, the pellet quality by using lignin, starch, and poly(vinyl alcohol) (PVA) as binders was compared. PVA performed the best both with respect to the pellet strength and hydrophobicity. Furthermore, a new pelletization method by using organic binders coupled with additives was suggested to enhance the pellet strength. The strength of the PVA pellet increased by employing the biomass gasification residue (BGR) as the additive. The mechanism of the influence of the binder and the BGR additive on the pellet quality was discussed. Overall, applying PVA as a binder and the BGR as an additive could be an adequate method to produce carbonized pellet with high quality. Using the BGR as an additive for pelletization gives a chance to reduce the binder usage and also provides a good disposal method of the BGR.

中文翻译：

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使用有机粘结剂与生物质气化残渣作为添加剂制粒碳化木

整合碳化和造粒成为生物质资源能源利用的一项有吸引力的技术。但是，对于碳化生物质的致密化仍然存在挑战。首先，比较了使用木质素，淀粉和聚乙烯醇（PVA）作为粘合剂的颗粒质量。就颗粒强度和疏水性而言，PVA表现最佳。此外，提出了一种通过使用有机粘合剂和添加剂的新造粒方法来提高造粒强度。通过使用生物质气化残余物（BGR）作为添加剂，PVA颗粒的强度得以提高。讨论了粘合剂和BGR添加剂对颗粒质量的影响机理。全面的，使用PVA作为粘合剂和BGR作为添加剂可能是生产高质量碳化颗粒的合适方法。使用BGR作为造粒添加剂可以减少粘合剂用量，并提供良好的BGR处理方法。