HCl emission during co-pyrolysis of demolition wood with a small amount of PVC film and the effect of wood constituents on HCl emission reduction

Kuramochi, Hidetoshi; Nakajima, Daisuke; Goto, Sumio; Sugita, Kazutoshi; Wu, Wei; Kawamoto, Katsuya

doi:10.1016/j.fuel.2008.03.021

Cited by 64 publications

(28 citation statements)

References 9 publications

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“…The influence of PVC on the cellulose derived products of wood was found to be analogous to that on pure cellulose. Significantly reduced HCl emission was found by Kuramochi and coworkers [15] during pyrolysis of wood or wood components when mixed with 1 wt% of PVC. It was concluded that hemicellulose fixed HCl in the char.…”

Section: Introductionmentioning

confidence: 79%

Pyrolysis of wood–PVC mixtures. Formation of chloromethane from lignocellulosic materials in the presence of PVC

Czégény

Jakab

Bozi

et al. 2015

Journal of Analytical and Applied Pyrolysis

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Thermal decomposition of polyvinylchloride (PVC) -wood and wood component mixtures were examined under slow and fast heating by pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) and thermogravimetry/mass spectrometry(TG/MS) techniques in order to clarify the chemical interaction of biomass materials and PVC during thermal decomposition. A hardwood and a softwood (beech and pine), their lignin and two types of cellulose (Avicel and Whatman) were chosen as natural polymer components. Comparing the gaseous and liquid pyrolysis products of pure samples to those of mixtures it was found that considerably lower amount of several reactive compounds have been produced when the biomass sample was mixed with PVC. On the other hand significant amount of chloromethane appeared in the pyrolysate of wood and lignin samples mixed with PVC under fast and slow pyrolysis conditions as well, but only in traces of chlorinated organic compounds were detected from cellulose mixtures. It was concluded that the methoxy groups at phenolic rings in lignin are the methyl source of chloromethane formation, and this reaction consumed most of the HCl evolved from PVC.

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Section: Introductionmentioning

confidence: 79%

Pyrolysis of wood–PVC mixtures. Formation of chloromethane from lignocellulosic materials in the presence of PVC

Czégény

Jakab

Bozi

et al. 2015

Journal of Analytical and Applied Pyrolysis

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“…A corresponding, but negative synergy in gas (HCl) was observed [119]. Also Kuramochi et al (2008) [88] and Zhou et al (2015) [115] observed a decrease in HCl when co-pyrolysing biomass and PVC. The chlorine of PVC was preferentially found in the 'oil fraction'.…”

Section: Synergistic Effect During the Thermoconversion Of Plastics Amentioning

confidence: 95%

“…The chlorine of PVC was preferentially found in the 'oil fraction'. According to Ephraim (2016 a ) [119], it is mainly present as HCl gas dissolved in the oily phase after condensation, in contradiction with Kuramochi et al (2008) [88] and Zhou et al (2015) [115], who suggest that some chlorine of the PVC might be present in organic chlorinated compounds.…”

Section: Synergistic Effect During the Thermoconversion Of Plastics Amentioning

confidence: 99%

Co-pyrogasification of Plastics and Biomass, a Review

Block¹,

Ephraim

Weiss-Hortala

et al. 2018

Waste Biomass Valor

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Over the past few decades, the sharp rise in post-consumer plastic and biomass waste has resulted in an ever growing challenge to treat such waste sustainably. Co-pyrogasification of plastics and biomass mixtures, as opposed to separately converting these waste streams, offers several advantages including an improvement in syngas quality and composition (H2/CO ratio) in relation to the desired application, and an easier reactor feeding of plastics. Furthermore, many studies have shown that co-pyrogasification promotes the conversion of waste to gas rather than char and tar. However, in order to achieve the desired product distribution or syngas composition, operating parameters such as the reactor temperature, equivalence ratio (air or oxygen), steam/fuel ratio and catalyst, have to be optimized. Thus, this paper aims to review literature studies on the co-pyrogasification of plastics and biomass by considering various aspects including the process principle, reactors, influence of feedstock characteristics and operating parameters on the products, as well as the synergies observed during the thermoconversion of plastics and biomass mixtures with some reference to coal mixtures when necessary.

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“…32 As shown in Fig. 3 and 5, biomass materials, whether xylan, cellulose, and lignin or lignin pyrolysis char/residue, may decrease the production of HCl.…”

Section: Co-pyrolysis Of Pvc and Biomass Componentsmentioning

confidence: 99%

Effect of interactions of PVC and biomass components on the formation of polycyclic aromatic hydrocarbons (PAH) during fast co-pyrolysis

Zhou

Onwudili

et al. 2015

RSC Adv.

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eprints@whiterose.ac.uk https://eprints.whiterose.ac.uk/ Reuse Unless indicated otherwise, fulltext items are protected by copyright with all rights reserved. The copyright exception in section 29 of the Copyright, Designs and Patents Act 1988 allows the making of a single copy solely for the purpose of non-commercial research or private study within the limits of fair dealing. The publisher or other rights-holder may allow further reproduction and re-use of this version -refer to the White Rose Research Online record for this item. Where records identify the publisher as the copyright holder, users can verify any specific terms of use on the publisher's website. TakedownIf you consider content in White Rose Research Online to be in breach of UK law, please notify us by emailing eprints@whiterose.ac.uk including the URL of the record and the reason for the withdrawal request. RSC Advances RSCPublishing ARTICLEThis journal is © The Royal Society of Chemistry 2013 J. Name., 2013, 00, 1-3 | 1 The interactions of polyvinyl chloride (PVC) and biomass components (hemi-cellulose, cellulose and lignin) during fast pyrolysis were investigated at 800 °C in a fixed bed reactor. The interactions of PVC and biomass components decreased the HCl yield and increased the tar yield significantly. During the co-pyrolysis of PVC with the biomass components, most polycyclic aromatic hydrocarbons (PAH) components were decreased compared with the calculated proportion results. The mechanism of the interactions may be that in the fast pyrolysis process, the processes of dehydrochlorination and chain scission occur in a very short time. Biomass materials and/or bio-char can act as catalysts which inhibit the dehydrochlorination process or promote the chain scission of PVC. Therefore, the dehydrochlorination process might not be completed, resulting in the production of chlorinated oil compounds. Thus, the HCl yield is reduced and PAH concentrations are decreased during the co-pyrolysis of PVC and biomass.

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HCl emission during co-pyrolysis of demolition wood with a small amount of PVC film and the effect of wood constituents on HCl emission reduction

Cited by 64 publications

References 9 publications

Pyrolysis of wood–PVC mixtures. Formation of chloromethane from lignocellulosic materials in the presence of PVC

Pyrolysis of wood–PVC mixtures. Formation of chloromethane from lignocellulosic materials in the presence of PVC

Co-pyrogasification of Plastics and Biomass, a Review

Effect of interactions of PVC and biomass components on the formation of polycyclic aromatic hydrocarbons (PAH) during fast co-pyrolysis

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