Comparative study on pyrolysis behaviors and chlorine release of pure PVC polymer and commercial PVC plastics

Li, Wang; Bai, Zongqing; Zhang, Tingting; Jia, Yuxing; Hou, Yujie; Chen, Juan; Guo, Zhenxing; Kong, Lingxue; Bai, Jin; Li, Wen

doi:10.1016/j.fuel.2023.127555

Cited by 26 publications

(8 citation statements)

References 29 publications

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“…The initial stage was associated with the breakage of C–Cl bonds, attributed to their low bond dissociation energy, while the latter stage was indicative of the decomposition of oxygenated compounds and organic residues in PVC. 55 The research findings concluded comparatively lower thermal stability of plastic particles when compared with the IPN hydrogel, underscoring the pivotal role of the hydrogel's unique structure in maintaining thermal integrity.…”

Section: Resultsmentioning

confidence: 92%

Polyoxometalate nanocluster-infused triple IPN hydrogels for excellent microplastic removal from contaminated water: detection, photodegradation, and upcycling

Dutta,

Misra,

Bose

2024

Nanoscale

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Section: Resultsmentioning

confidence: 92%

Polyoxometalate nanocluster-infused triple IPN hydrogels for excellent microplastic removal from contaminated water: detection, photodegradation, and upcycling

Dutta,

Misra,

Bose

2024

Nanoscale

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“…As reported earlier, ,− chlorinated polymers like PVC and PCP are the most likely sources of Cl-aromatics and Cl-biphenyls via pyrolysis. During this process, a significant amount of hydrochloric acid (HCl) is also formed along with gaseous chlorine. Apart from chlorinated polymers as a source of Cl-species in pyoils, several chlorine-containing additives or processing agents could be potential sources of Cl-species in pyoils.…”

Section: Resultsmentioning

confidence: 99%

Chlorine Speciation by GC-XSD for the Characterization of Plastic Pyrolysis Oil as a Cracker Feedstock

Giri,

Yan,

Emamjomeh

et al. 2024

Energy Fuels

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Chemical recycling via pyrolysis of plastic is one of the emerging areas to bring valuable used plastic resources into the chemical industry value chain. However, one of the major concerns is the large amount of heteroatom-containing compounds in plastic-derived pyrolysis oil (pyoil), hindering the effective utilization of pyoil as a viable cracker feedstock. Chlorine (Cl) is one such highly unwanted chemical class in pyoil. It can cause critical damage to the cracker and related installations, such as hydrotreaters, due to corrosion. Hence, monitoring the Cl-species in pyoil is critical for understanding the distribution of Cl-species to effectively decontaminate pyoil and protect crackers and hydrotreaters. Therefore, a robust gas chromatography-halogen-specific detector (GC-XSD) method was developed to detect and quantify Cl-species in pyoil. Identification of the Cl-species was corroborated by GC × GC-TOFMS, retention indices, and standards. Validation of 32 Cl-compounds was done for linearity (R 2 ), limit of detection (LOD), limit of quantification (LOQ), repeatability, reproducibility, and recovery. The detection limits of the majority of the Cl-species were at a ppm level, which is fit for the purpose of such a characterization of complex pyoil. Recovery studies revealed satisfactory results for the majority of the Clclasses (>90% recovery). Certain Cl-classes including Cl-alcohols and Cl-acids were found to be reactive to native pyoil species, resulting in poor recovery. Major sources of detected Cl-species in diverse pyoils were Cl-containing polymers like PVC, PCP, and Cl-additives. This Cl-monitoring method is a key enabler for determining the dechlorination success and, therefore, the effective integration of cracker and refinery with plastic-derived pyoils as the feedstock.

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“…The chlorine present in the RDF used in the experiment mainly originates from organic chlorine in PVC and inorganic chlorine in sawdust (NaCl or KCl). Li et al 26 reported that chlorine release from PVC starts around 225 °C. Wang et al 27 have demonstrated that chlorine release from NaCl initiates at temperatures higher than 800 °C under the influence of SiO 2 /Al 2 O 3 .…”

Section: Resultsmentioning

confidence: 99%

Effect of granulation on chlorine-release behavior during municipal solid waste incineration

Xie,

Wu,

et al. 2023

RSC Adv.

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Comparative study on pyrolysis behaviors and chlorine release of pure PVC polymer and commercial PVC plastics

Cited by 26 publications

References 29 publications

Polyoxometalate nanocluster-infused triple IPN hydrogels for excellent microplastic removal from contaminated water: detection, photodegradation, and upcycling

Polyoxometalate nanocluster-infused triple IPN hydrogels for excellent microplastic removal from contaminated water: detection, photodegradation, and upcycling

Chlorine Speciation by GC-XSD for the Characterization of Plastic Pyrolysis Oil as a Cracker Feedstock

Effect of granulation on chlorine-release behavior during municipal solid waste incineration

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