文献类型：期刊文献

中文题名：聚氯乙烯与空心果穗共水热炭化过程中的形态演变

英文题名：Morphological Evolution in the Co-Hydrothermal Carbonization of Polyvinyl Chloride and Empty Fruit Bunch

作者：周志诚[1];寇俊秋[1];郭松灵[1];丁路[1];王辅臣[1]

机构：[1]华东理工大学洁净煤技术研究所,上海200237

年份：2025

卷号：51

期号：5

起止页码：581

中文期刊名：华东理工大学学报(自然科学版)

外文期刊名：Journal of East China University of Science and Technology

收录：;北大核心:【北大核心2023】；

语种：中文

中文关键词：聚氯乙烯;生物质;共水热炭化;成型演变;资源利用

外文关键词：polyvinyl chloride;biomass;co-hydrothermal carbonization;formation evolution;resource utilization

摘要：水热炭化是一种高效且环保的聚氯乙烯(PVC)处理方法,可以实现PVC的清洁利用。基于PVC与空心果穗(EFB)的共水热炭化过程,研究了球形水热炭的形貌和成型演变规律,揭示了反应温度和搅拌功率对水热炭形貌以及成型的影响。结果表明:水热炭呈现双层球体结构,外层由孔隙疏松的EFB水热炭构成,内层由孔隙致密的PVC水热炭构成;提高反应温度有助于PVC熔融和EFB的水解反应,促进水热炭球形度和粒度的提升;提高搅拌功率有助于熔融PVC液滴分散,促进球形水热炭粒度下降;但当搅拌功率超过临界值时,会出现破乳现象,导致球形水热炭粒度上升以及球形度急剧下降。本文为工业上有效控制水热炭粒度及其开发应用提供了理论支撑。
Hydrothermal carbonization(HTC)is an efficient and environmentally friendly method for the treatment of polyvinyl chloride(PVC),enabling the clean utilization of PVC.Based on the co-hydrothermal carbonization of PVC and empty fruit bunch(EFB),this study investigated the morphology and formation evolution law of spherical hydrochar,and revealed the effects of reaction temperature and stirring power on the morphology and formation of hydrochar.The results showed that the hydrochar exhibited a double-layer spherical structure:The outer layer was composed of EFB-derived hydrochar with loose pores,while the inner layer was composed of PVC-derived hydrochar with dense pores.Increasing the reaction temperature was beneficial to the melting of PVC and the hydrolysis reaction of EFB,which promoted the improvement of the sphericity and particle size of hydrochar.Enhancing the stirring power facilitated the dispersion of molten PVC droplets,contributing to the reduction of the particle size of spherical hydrochar.However,when the stirring power exceeded a critical value,demulsification occurred,leading to an increase in particle size and a sharp decrease in sphericity.This study provides theoretical support for the effective control of hydrochar particle size in industry as well as its development and application.