Catalytic pyrolytic platform for scrap tires using CO2 and steel slag

Cho, Seong Heon; Oh, Jeong Ik; Jung, Sungyup; Park, Young-Kwon; Tsang, Yiu Fai; Ok, Yong Sik; Kwon, Eilhann E.

doi:10.1016/j.apenergy.2019.114164

Cited by 31 publications

(14 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Waste pyrolysis and gasification are the second important aspects of achieving green manufacturing, which contain municipal solid waste (MSW) pyrolysis and biomass gasification. Kinetic studies of MSW pyrolysis at 600–900 °C indicated that CaO, MgO, and Al 2 O 3 in slag have the catalytic effect; , this result testified the feasibility of pyrolyzing MSW using slag waste heat. Similarly, biomass is an important potential renewable fuel that can produce combustible gas. − The biomass gasification characteristics and syngas releasing behavior using hot slag at 200–500 °C were investigated when the mass ratio of wheat straw to slag (1:1) was defined; syngas with 0.149 L of CO, 0.036 L of H 2 , and 0.069 L of CH 4 could be produced by per gram of wheat straw at 450 °C. , Definitely, slag waste heat could be recovered effectively by chemical methods.…”

Section: Introductionmentioning

confidence: 65%

“…Waste pyrolysis and gasification are the second important aspects of achieving green manufacturing, 36 which contain municipal solid waste (MSW) pyrolysis and biomass gasification. Kinetic studies of MSW pyrolysis at 600−900 °C indicated that CaO, MgO, and Al 2 O 3 in slag have the catalytic effect; 26,37 this result testified the feasibility of pyrolyzing MSW using slag waste heat. Similarly, biomass is an important potential renewable fuel that can produce combustible gas.…”

Section: ■ Introductionmentioning

confidence: 78%

“…Therefore, recycling slag sensible heat is particularly important for energy conservation and CO 2 emission reduction. Currently, slag waste heat recycling technologies mainly include physical methods or chemical methods. , The former were widely proposed, such as mechanical crushing methods, , air blast methods, and centrifugal granulated methods, − which could achieve a better granulation effect but their heat conversion efficiency was lower than 65%. , To elevate this value, chemical methods, such as methane reforming, − coal gasification, − and waste gasification, − emerged. Previous studies on the first two methods have been reported, which showed that the exergy loss was 15% for methane steam reforming system collaborating RCA granulation , and 409 MJ·t –1 slag for the coal gasification system .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Feasibility Evaluation of the Terminated Waste Energy In Situ Conversion Strategy toward Carbon Neutralization in Metallurgical Processes

Dong

Zhang

Wei

et al. 2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

Integrated consideration of carbon dioxide reduction, terminated energy conversion, and resourceful disposal of wastes like plastics broadens a new horizon for green metallurgical processes. Here, a chlorine-free plastic gasification process in situ utilizing converter slag and flue gas heat was proposed as an example, and this complicated system's superiority was comprehensively evaluated in terms of syngas preparation efficiency and carbon dioxide reduction depth through thermodynamics. Specifically, the effects of process parameters such as temperature, pressure, and H 2 O/P, CO 2 /P, and SS/P ratios on both were discussed in detail; moreover, two sets of theoretical operation conditions were explored for the maximum syngas preparation efficiency or carbon dioxide reduction. Furthermore, the effects of waste plastics and the gasification agent amount on reaction system heat balance were discussed when the H 2 /CO ratio in syngas gas was 3:1 or 2:1 for CH 4 or CH 3 OH preparation, respectively, for the purpose of terminated product quality regulation. The results showed that H 2 and CO yields and the CO 2 conversion rate increased as the temperature increased but decreased as the pressure increased, H 2 yield was promoted by the H 2 O/P ratio instead of CO yield and the CO 2 conversion rate, and the CO 2 /P ratio had a positive effect on CO yield but not on H 2 yield and the CO 2 conversion rate; CH 4 and CaCO 3 yields increased as the SS/P ratio increased. Meanwhile, chlorine-free plastic consumption increased as the temperature increased, and less gasification agent was needed. However, this system had the maximum syngas yield, namely, 44.82−64.13% H 2 and 88.88−135.69% CO when temperature, pressure, and H 2 O/P, CO 2 /P, and SS/P ratios were 800−1000 °C, 1.0 atm, 1−2.0, 1.2−3.0, and 1.0, respectively; with respect to CO 2 reduction efficiency, capacity ranging from 75.17 to 90% can be obtained when 800−1000 °C, 1.0 atm, 0−0.8, 0.4− 1.2, and 1.0 were adopted. Definitely, the strategy of in situ converter slag and flue gas heat conversion utilizing chlorine-free plastics was indeed feasible for industrial application.

show abstract

Section: Introductionmentioning

confidence: 65%

Section: ■ Introductionmentioning

confidence: 78%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Feasibility Evaluation of the Terminated Waste Energy In Situ Conversion Strategy toward Carbon Neutralization in Metallurgical Processes

Dong

Zhang

Wei

et al. 2021

ACS Sustainable Chem. Eng.

View full text Add to dashboard Cite

show abstract

“…Cho et al used scrap tire (ST) as raw material to pyrolyze ST in a CO 2 atmosphere, and the effect was significantly enhanced (about 400% at 400 • C). In the presence of steel slag, CO 2 enhanced the pyrolysis of volatile pyrolysis compounds and promoted the formation of H 2 [36] . Lee et al used pine sawdust as the carbonaceous material for pyrolysis and controlled the pyrolysis of carbon from a liquid state to a gas state through gas phase reactions (GPRS).…”

Section: Pyrolysismentioning

confidence: 99%

Sustainable Utilization of Steel Slag from Traditional Industry and Agriculture to Catalysis

Gao

Wang

et al. 2020

Sustainability

View full text Add to dashboard Cite

Steel slag is a large amount of residual material produced in the process of steel manufacturing. With the requirements of sustainable development in China, the utilization of steel slag has become a hot issue. Through an in-depth study on steel slag, it is apparent that it has been widely used in various fields in recent years. The resource utilization of steel slag is not only conducive to resource conservation, but also conducive to sustainable production and environmental protection. In this paper, the common ways of resource utilization of steel slag in construction, agriculture, industry, and catalysis are reviewed. Steel slag as a solid waste with great development potential and large output is expected to be widely developed into high value-added products such as catalytic material in the future.

show abstract

“…This suggests that TPO can be considered as an unrefined HC source . Light aromatic HC (benzene, toluene, xylene, and ethylbenzene), polyaromatic HC (naphthalene), aliphatic HC (dodecane and tridecane), and monoterpenes (limonene) seem to represent some of the major compounds in the mixture. − In general, yields and physicochemical properties of TPO are closely related to the tire composition, reactor technology, and main pyrolysis-governing variables ( i.e. , temperature, pressure, heating rate, residence time, etc.…”

Section: Introductionmentioning

confidence: 99%

Fuel and Chemical Properties of Waste Tire Pyrolysis Oil Derived from a Continuous Twin-Auger Reactor

et al. 2020

View full text Add to dashboard Cite

Tire pyrolysis oil (TPO) is a complex mixture of hydrocarbons, and it is one of the useful fractions obtained from the pyrolysis of waste tires (WT). As a result of its high energy density (HHV ~ 43 MJ/kg), TPO use as a fuel in combustion systems is a promising approach for recycling WT. However, fundamental fuel characteristics and combustion properties of TPO are still unexplored, which stand as a bottleneck for potential applications.This work pursues a comprehensive understanding of the structural characteristics of a TPO produced in a labscale twin-auger reactor as a first step towards defining applications and upgrading strategies. Therefore, advanced analytical techniques such as Fourier Transform -Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS), and 1 H and 13 C Nuclear Magnetic Resonance (NMR) spectroscopy were utilized. In addition, we also present the characterization of a TPO obtained from adding CaO to WT, as a low-cost catalytic material for its in-situ upgrading, herein named TPO [CaO]. FT-ICR MS results revealed the significant presence of pure hydrocarbons (HC) (HC(TPO) = 74.9 % and HC(TPO[CaO]) = 78.6 %) and hydrocarbons containing one sulfur atom (S1) (S1(TPO) = 14.3 % and S1(TPO[CaO]) = 13.9 %). HC compounds were found mainly in the form of tri-aromatics (26 %), tetra-aromatics (13 and 15 %), and penta-aromatics (22 and 30 %), while S1 compounds in the form of dibenzothiophene (31 %) and benzonaphthothiophene (34 %). The resolved compounds by means of FT-ICR 2 MS exhibited an average double bond equivalent (DBE) number of 11.3 and 12.2 for TPO and TPO[CaO], respectively. These high DBE values were indicators of the significant presence of condensed aromatic structures. 1 H NMR analysis showed that hydrogen atoms in methylene (CH2), methyl (CH3), and naphthenic groups, as well as hydrogen atoms in aromatic structures make up more than 80 % of both fuels. Similarly, carbon atoms in paraffinic groups (both CH2 and CH3) and protonated carbons in aromatic rings together form more than 50 % of the carbon atoms in TPO and TPO [CaO]. The information reported in this work provides new insights into the structural characteristics of the TPO obtained in promising technology as the twin-auger reactor for its use as a fuel, as well as for the design of upgrading strategies.

show abstract

Catalytic pyrolytic platform for scrap tires using CO2 and steel slag

Cited by 31 publications

References 50 publications

Feasibility Evaluation of the Terminated Waste Energy In Situ Conversion Strategy toward Carbon Neutralization in Metallurgical Processes

Feasibility Evaluation of the Terminated Waste Energy In Situ Conversion Strategy toward Carbon Neutralization in Metallurgical Processes

Sustainable Utilization of Steel Slag from Traditional Industry and Agriculture to Catalysis

Fuel and Chemical Properties of Waste Tire Pyrolysis Oil Derived from a Continuous Twin-Auger Reactor

Contact Info

Product

Resources

About