Analysis of the pyrolysis process, kinetics and products of the base components of waste wind turbine blades (epoxy resin and carbon fiber)

被引：53

作者：

Ge, Lichao ^{[1
]}

Li, Xi ^{[1
]}

Feng, Hongcui ^{[2
,3
]}

Xu, Chunyao ^{[1
]}

Lu, Yanning ^{[4
]}

Chen, Bo ^{[4
]}

Li, Dongyang ^{[1
]}

Xu, Chang ^{[1
]}

机构：

[1] Hohai Univ, Coll Energy & Elect Engn, Nanjing 211100, Peoples R China

[2] Nanjing Vocat Univ Ind Technol, Sch Elect Engn, Nanjing 210023, Peoples R China

[3] Nanjing Vocat Univ Ind Technol, Jiangsu Wind Power Engn Technol Ctr, Nanjing 210023, Peoples R China

[4] Jiangsu Frontier Elect Technol Co Ltd, Nanjing 211102, Peoples R China

来源：

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS | 2023年 / 170卷

基金：

中国国家自然科学基金;

关键词：

Wind turbine blades; Fiber -reinforced resin composites; Pyrolysis; Kinetics; Gas products; PRINTED-CIRCUIT BOARDS; TG-FTIR; GLASS-FIBER; THERMOPLASTIC COMPOSITES; THERMAL-DECOMPOSITION; SEWAGE-SLUDGE; CO-PYROLYSIS; DEGRADATION; STABILITY; POLYMERS;

D O I：

10.1016/j.jaap.2023.105919

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

In the future, wind turbine blade waste will increase significantly. However, there is no proper treatment plan for this condition. Pyrolysis is one of the most feasible methods for recycling waste wind turbine blades. In this paper, the thermal degradation behaviors of epoxy resin mixed with carbon fiber applied in wind turbine blade base components were studied by thermogravimetric analysis, thermogravimetric-Fourier transform infrared spectroscopy and tube furnace. The effects of different heating rates and mixing ratios were investigated, the kinetics of the pyrolysis reaction were calculated in detail, and the composition of the pyrolysis volatile fraction was studied. The results showed that increasing the heating rate was more favorable for the pyrolysis characteristics of mixed samples. However, it would reduce the degree of pyrolysis, showing a different pattern from that of the pure epoxy resin. The activation energy of pyrolysis was calculated by the Coats and Redfern method and Flynn-Wall-Ozawa method, and the effects of the mixing ratio on the activation energies of the samples were greater than those of the heating rate. During the thermal decomposition of the sample, mainly carbon-oxygen compounds, methane, alkanes, olefins, carboxylic acids and aromatic compounds were produced. The pyrolysis of the mixture could be divided into three steps based on the product characteristics combined with kinetic calculation results. According to the tube furnace results, the best calorific value and recovery value of gaseous products are obtained with the sample proportion closest to the actual component. In general, the copyrolysis of carbon fiber and epoxy resin is much more complicated than that of epoxy resin alone, and the addition of carbon fiber eases the epoxy resin pyrolysis process, which does not exclude the existence of synergistic effects in the pyrolysis process; additionally, the difference in pyrolysis behavior is greater under different mixing ratios. Based on this phenomenon, basic data support was provided for further research on the pyrolysis and recycling process of waste wind turbine blades.

引用

页数：12