Waste tire valorization by intermediate pyrolysis using a continuous twin-auger reactor: Operational features

Juan Daniel Martínez; Felipe Campuzano; Natalia Cardona-Uribe; Cindy Natalia Arenas; Daniel Muñoz-Lopera

doi:10.1016/j.wasman.2020.06.019

Waste tire valorization by intermediate pyrolysis using a continuous twin-auger reactor: Operational features

Juan Daniel Martínez, Felipe Campuzano, Natalia Cardona-Uribe, Cindy Natalia Arenas, Daniel Muñoz-Lopera

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Pyrolysis can be regarded as a roadmap towards a circular and sustainable economy for waste tires (WT). This work investigates the operational characteristics of a novel twin-auger reactor to transform WT by intermediate pyrolysis into tire pyrolysis oil (TPO), recovery carbon black (rCB), and tire pyrolysis gas (TPG). The influence of four operating parameters: reactor temperature (X₁), WT mass flow rate (X₂), solid residence time (X₃) and N₂ volumetric flow rate (X₄), was assessed in order to maximize the TPO yield (Y₁), while keeping the rCB one (Y₂) as low as possible. The experimental campaign was conducted based on central composite design (CCD). The analysis of variance (ANOVA) showed that X₁ and X₂ exhibit the highest statistical influence. An optimization of both responses resulted in TPO, rCB, and TPG yields of 45, 40 and 15 wt%, respectively, when the pyrolyzer is operated at 475 °C, 1.16 kg/h, 3.5 min and 300 mL/min. At these conditions, the resulting TPO showed contents of C, H, S, N and O around 88.2, 9.7, 1.3, 0.7 and <0.1 wt%, respectively, along with a heating value of 42.02 MJ/kg. The rCB is comprised of moisture, volatile matter, fixed carbon, and ash around 2.5, 3.7, 75.5, and 18.3 wt%, respectively; while the TPG was mainly composed of H₂ (23.7 vol%) and CH₄ (28.2 vol%). Overall, these results suggest that twin-auger pyrolyzers are well suited for valorizing WT by intermediate pyrolysis.

Original language	English
Pages (from-to)	404-412
Number of pages	9
Journal	Waste Management
Volume	113
DOIs	https://doi.org/10.1016/j.wasman.2020.06.019
State	Published - 15 Jul 2020

Bibliographical note

Funding Information:
The authors would like to express their sincere gratitude to COLCIENCIAS for the financial support given by the research project ( 1210-715-51742 ). F. Campuzano is in debt to COLCIENCIAS for the PhD scholarship ( 757-2016 ). D. Muñoz-Lopera expresses his gratitude to CIDI-UPB and its program “Formación Investigativa” for the MSc scholarship. The authors are also deeply grateful to GIMEL group from UdeA and Mr. Cristian Ortiz-Córdoba for their valuable support in the experimental campaign.

Funding Information:
The authors would like to express their sincere gratitude to COLCIENCIAS for the financial support given by the research project (1210-715-51742). F. Campuzano is in debt to COLCIENCIAS for the PhD scholarship (757-2016). D. Muñoz-Lopera expresses his gratitude to CIDI-UPB and its program “Formación Investigativa” for the MSc scholarship. The authors are also deeply grateful to GIMEL group from UdeA and Mr. Cristian Ortiz-Córdoba for their valuable support in the experimental campaign.

Publisher Copyright:
© 2020 Elsevier Ltd

Keywords

Circular economy
Response surface methodology
Tire pyrolysis oil, recovery carbon black

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.wasman.2020.06.019

Cite this

@article{2de9367c751e460382be140c8594a64d,

title = "Waste tire valorization by intermediate pyrolysis using a continuous twin-auger reactor: Operational features",

abstract = "Pyrolysis can be regarded as a roadmap towards a circular and sustainable economy for waste tires (WT). This work investigates the operational characteristics of a novel twin-auger reactor to transform WT by intermediate pyrolysis into tire pyrolysis oil (TPO), recovery carbon black (rCB), and tire pyrolysis gas (TPG). The influence of four operating parameters: reactor temperature (X1), WT mass flow rate (X2), solid residence time (X3) and N2 volumetric flow rate (X4), was assessed in order to maximize the TPO yield (Y1), while keeping the rCB one (Y2) as low as possible. The experimental campaign was conducted based on central composite design (CCD). The analysis of variance (ANOVA) showed that X1 and X2 exhibit the highest statistical influence. An optimization of both responses resulted in TPO, rCB, and TPG yields of 45, 40 and 15 wt%, respectively, when the pyrolyzer is operated at 475 °C, 1.16 kg/h, 3.5 min and 300 mL/min. At these conditions, the resulting TPO showed contents of C, H, S, N and O around 88.2, 9.7, 1.3, 0.7 and <0.1 wt%, respectively, along with a heating value of 42.02 MJ/kg. The rCB is comprised of moisture, volatile matter, fixed carbon, and ash around 2.5, 3.7, 75.5, and 18.3 wt%, respectively; while the TPG was mainly composed of H2 (23.7 vol%) and CH4 (28.2 vol%). Overall, these results suggest that twin-auger pyrolyzers are well suited for valorizing WT by intermediate pyrolysis.",

keywords = "Circular economy, Response surface methodology, Tire pyrolysis oil, recovery carbon black",

author = "Mart{\'i}nez, {Juan Daniel} and Felipe Campuzano and Natalia Cardona-Uribe and Arenas, {Cindy Natalia} and Daniel Mu{\~n}oz-Lopera",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

month = jul,

day = "15",

doi = "10.1016/j.wasman.2020.06.019",

language = "Ingl{\'e}s",

volume = "113",

pages = "404--412",

journal = "Waste Management",

issn = "0956-053X",

}

TY - JOUR

T1 - Waste tire valorization by intermediate pyrolysis using a continuous twin-auger reactor

T2 - Operational features

AU - Martínez, Juan Daniel

AU - Campuzano, Felipe

AU - Cardona-Uribe, Natalia

AU - Arenas, Cindy Natalia

AU - Muñoz-Lopera, Daniel

PY - 2020/7/15

Y1 - 2020/7/15

N2 - Pyrolysis can be regarded as a roadmap towards a circular and sustainable economy for waste tires (WT). This work investigates the operational characteristics of a novel twin-auger reactor to transform WT by intermediate pyrolysis into tire pyrolysis oil (TPO), recovery carbon black (rCB), and tire pyrolysis gas (TPG). The influence of four operating parameters: reactor temperature (X1), WT mass flow rate (X2), solid residence time (X3) and N2 volumetric flow rate (X4), was assessed in order to maximize the TPO yield (Y1), while keeping the rCB one (Y2) as low as possible. The experimental campaign was conducted based on central composite design (CCD). The analysis of variance (ANOVA) showed that X1 and X2 exhibit the highest statistical influence. An optimization of both responses resulted in TPO, rCB, and TPG yields of 45, 40 and 15 wt%, respectively, when the pyrolyzer is operated at 475 °C, 1.16 kg/h, 3.5 min and 300 mL/min. At these conditions, the resulting TPO showed contents of C, H, S, N and O around 88.2, 9.7, 1.3, 0.7 and <0.1 wt%, respectively, along with a heating value of 42.02 MJ/kg. The rCB is comprised of moisture, volatile matter, fixed carbon, and ash around 2.5, 3.7, 75.5, and 18.3 wt%, respectively; while the TPG was mainly composed of H2 (23.7 vol%) and CH4 (28.2 vol%). Overall, these results suggest that twin-auger pyrolyzers are well suited for valorizing WT by intermediate pyrolysis.

AB - Pyrolysis can be regarded as a roadmap towards a circular and sustainable economy for waste tires (WT). This work investigates the operational characteristics of a novel twin-auger reactor to transform WT by intermediate pyrolysis into tire pyrolysis oil (TPO), recovery carbon black (rCB), and tire pyrolysis gas (TPG). The influence of four operating parameters: reactor temperature (X1), WT mass flow rate (X2), solid residence time (X3) and N2 volumetric flow rate (X4), was assessed in order to maximize the TPO yield (Y1), while keeping the rCB one (Y2) as low as possible. The experimental campaign was conducted based on central composite design (CCD). The analysis of variance (ANOVA) showed that X1 and X2 exhibit the highest statistical influence. An optimization of both responses resulted in TPO, rCB, and TPG yields of 45, 40 and 15 wt%, respectively, when the pyrolyzer is operated at 475 °C, 1.16 kg/h, 3.5 min and 300 mL/min. At these conditions, the resulting TPO showed contents of C, H, S, N and O around 88.2, 9.7, 1.3, 0.7 and <0.1 wt%, respectively, along with a heating value of 42.02 MJ/kg. The rCB is comprised of moisture, volatile matter, fixed carbon, and ash around 2.5, 3.7, 75.5, and 18.3 wt%, respectively; while the TPG was mainly composed of H2 (23.7 vol%) and CH4 (28.2 vol%). Overall, these results suggest that twin-auger pyrolyzers are well suited for valorizing WT by intermediate pyrolysis.

KW - Circular economy

KW - Response surface methodology

KW - Tire pyrolysis oil, recovery carbon black

UR - http://www.scopus.com/inward/record.url?scp=85086800378&partnerID=8YFLogxK

U2 - 10.1016/j.wasman.2020.06.019

DO - 10.1016/j.wasman.2020.06.019

M3 - Artículo

C2 - 32593106

AN - SCOPUS:85086800378

VL - 113

SP - 404

EP - 412

JO - Waste Management

JF - Waste Management

SN - 0956-053X

ER -

Waste tire valorization by intermediate pyrolysis using a continuous twin-auger reactor: Operational features

Abstract

Bibliographical note

Keywords

UN SDGs

Access to Document

Fingerprint

Cite this