Back to Search
Start Over
Novel photothermal pyrolysis on waste fan blade to generate bisphenol A.
- Source :
-
Journal of Analytical & Applied Pyrolysis . Jan2023, Vol. 169, pN.PAG-N.PAG. 1p. - Publication Year :
- 2023
-
Abstract
- Waste fan blade would explosively grow with the life time of wind power machine is ended. Developing new low carbon-emission method to treat waste fan blade and achieving high resource recovery is promising. In this work, a novel photothermal pyrolysis method was developed and firstly applied to treat waste fan blade. A typical waste fan blade was cut, crushed and screened to separate base material and reinforcing fiber, whose mass ratio was 74.36:25.64. The base material was pyrolyzed at varied conditions of pyrolysis temperature, heating rate, gas flow rate respectively. The study showed that bisphenol A was significantly acquired in tars (relative contents were commonly over 40%), and its generation can be promoted by increasing pyrolysis temperature, heating rate and gas flow rare. The generation mechanism of bisphenol A was revealed during photothermal pyrolysis process: The main chain of 2,2-bis(4-glycidyloxyphenyl)propane resin in base material undergone random or chain cracking reaction to produce bisphenol A rigid skeleton, phenoxy, alkane, hydroxyl and other active groups. Bisphenol A rigid skeleton was the precursor of bisphenol A. Bisphenol A was formed after receiving hydrogen atoms, accompanied by the formation of tetrahydrofuran, 4,4-(propane-2,2-diyl)bis(methoxybenzene) and other substances. Bisphenol A undergone decomposition via secondary reactions, and it was mainly decomposed into phenol and 4-isopropylphenol, 4-isopropylphenol was then dehydrogenated to produce 4-isopropenylphenol. • Waste fan blade was firstly pyrolyzed using novel photothermal pyrolysis system. • High yield and relative content of bisphenol A was detected in pyrolytic oil. • Generation mechanism of bisphenol A during photothermal pyrolysis was revealed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 01652370
- Volume :
- 169
- Database :
- Academic Search Index
- Journal :
- Journal of Analytical & Applied Pyrolysis
- Publication Type :
- Academic Journal
- Accession number :
- 161600124
- Full Text :
- https://doi.org/10.1016/j.jaap.2022.105828