Hydrothermal carbonization of medical wastes and lignocellulosic biomass for solid fuel production from lab-scale to pilot-scale

作者：Shen, Yafei^*; Yu, Shili; Ge, Shun; Chen, Xingming; Ge, Xinlei; Chen, Mindong

来源：Energy, 2017, 118: 312-323.

DOI：10.1016/j.energy.2016.12.047

• Dechlorination
• Hydrothermal carbonization (HTC)
• PVC
• Lignocellulosic biomass
• Solid fuels

An alternative way has been proposed for the PVC-containing medical wastes valorization by cohydrothermal carbonization (HTC) with lignocellulosic biomass. The organic-Cl in PVC,can be converted to the inorganic-CI via hydrolysis, defunctionalization, recondensation, and aromatization in the HTC process. Followed by the washing process with the condensed water, the inorganic-Cl with high water-solubility could be removed from the solid products (i.e. hydrochar). Lignin as a biomass component can significantly improve the dechlorination efficiency of PVC in the HTC process. Here, the dechlorination performance of lignocellulosic components is given as the following order: lignin > cellulose > hemicellulose. In addition, lignin can adjust the particle sizes of solid products by inhibiting the agglomeration in the order of lignin > hemicellulose > cellulose. In the pilot-scale HTC process, the addition of woodchips improves the dechlorination efficiency of hospital wastes (HW). The hydrochar particles with low-chlorine content and higher heating value could be used as a clean coal alternative fuel.

• 出版日期2017-1-1
• 单位南京信息工程大学