Novel treatment of a biomass tar model compound via microwave-metal discharges

Sun, Jing; Wang, Qing; Wang, Wenlong; Song, Zhanlong; Zhao, Xinbing; Mao, Yanpeng; Ma, Chunyuan

doi:10.1016/j.fuel.2017.06.075

Cited by 48 publications

(27 citation statements)

References 27 publications

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“…Owing to the rapid consumption of fossil fuels and increasing emphasis on environmental issues, the use of biomass and municipal solid waste (MSW) as alternative fuel has received considerable attention. Gasification is considered one of the most flexible fuel conversion processes [1][2][3], which has the advantages of low secondary pollution compared with the traditional incineration method. The products of gasification can not only be used as fuel in gas turbines and gas engines, but also offer some basic building blocks for producing valuable chemicals, liquid fuels and hydrogen [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…However, besides the useful fuels, tar exists in the syngas as an undesirable by-product, which can cause fouling, clogging, and corrosion problems in downstream equipment after cooling and condensing [1,[6][7][8][9]. The secondary pollutants produced by the aromatic hydrocarbons in the tar component may also pose serious harm to the environment and human health.…”

Section: Introductionmentioning

confidence: 99%

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Destruction of Toluene, Naphthalene and Phenanthrene as Model Tar Compounds in a Modified Rotating Gliding Arc Discharge Reactor

Kong

Zhang

et al. 2018

Catalysts

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Tar removal is one of the greatest technical challenges of commercial gasification technologies. To find an efficient way to destroy tar with plasma, a rotating gliding arc (RGA) discharge reactor equipped with a fan-shaped swirling generator was used for model tar destruction in this study. The solution of toluene, naphthalene and phenanthrene is used as a tar surrogate and is destroyed in humid nitrogen. The influence of tar, CO2 and moisture concentrations, and the discharge current on the destruction efficiency is emphasized. In addition, the combination of Ni/γ-Al2O3 catalyst with plasma was tested for plasma catalytic tar destruction. The toluene, naphthalene and phenanthrene destruction efficiency reached up to 95.2%, 88.9%, and 83.9% respectively, with a content of 12 g/Nm3 tar, 12% moisture, 15% CO2, and a flow rate of 6 NL/min, whereas 9.3 g/kW·h energy efficiency was achieved. The increase of discharge current is advantageous in terms of decreasing black carbon production. The participation of Ni/γ-Al2O3 catalyst shows considerable improvement in destruction efficiency, especially at a relatively high flow rate (over 9 NL/min). The major liquid by-products are phenylethyne, indene, acenaphthylene and fluoranthene. The first two are majorly converted from toluene, acenaphthylene is produced by the co-reaction of toluene and naphthalene in the plasma, and fluoranthene is converted by phenanthrene.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Destruction of Toluene, Naphthalene and Phenanthrene as Model Tar Compounds in a Modified Rotating Gliding Arc Discharge Reactor

Kong

Zhang

et al. 2018

Catalysts

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“…When metal with tips or sharp edges were exposed to the microwave field, intense discharge phenomena may occur. Our previous investigations have demonstrated the novel application potentials of microwave-metal discharge in eliminating toxic volatile organic emissions and associated mechanisms [33,34]. It was then interestingly found that the decomposition of carbonaceous compounds was often accompanied by the formation of dense carbon fragments.…”

Section: Introductionmentioning

confidence: 98%

Microwave-based preparation and characterization of Fe-cored carbon nanocapsules with novel stability and super electromagnetic wave absorption performance

Wang

Sun

et al. 2018

Carbon

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“…Even though many published papers denoted as "plasma catalytic removal of model tar compound" can be found in the available literature, a majority of these papers actually deals with a removal of toluene (C 7 H 8 ) as a model tar compound [27][28][29][30][31][32]. Nevertheless, the toluene represents "only" a monocyclic organic compound as it contains a single benzene ring.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Packing Material Properties on Tars Removal by Plasma Catalysis

et al. 2020

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Plasma catalysis has been utilized in many environmental applications for removal of various hydrocarbons including tars. The aim of this work was to study the tars removal process by atmospheric pressure DBD non-thermal plasma generated in combination with packing materials of various composition and catalytic activity (TiO2, Pt/γAl2O3, BaTiO3, γAl2O3, ZrO2, glass beads), dielectric constant (5–4000), shape (spherical and cylindrical pellets and beads), size (3–5 mm in diameter, 3–8 mm in length), and specific surface area (37–150 m2/g). Naphthalene was chosen as a model tar compound. The experiments were performed at a temperature of 100 °C and a naphthalene initial concentration of approx. 3000 ppm, i.e., under conditions that are usually less favorable to achieve high removal efficiencies. For a given specific input energy of 320 J/L, naphthalene removal efficiency followed a sequence: TiO2 > Pt/γAl2O3 > ZrO2 > γAl2O3 > glass beads > BaTiO3 > plasma only. The efficiency increased with the increasing specific surface area of a given packing material, while its shape and size were also found to be important. By-products of naphthalene decomposition were analyzed by means of FTIR spectrometry and surface of packing materials by SEM analysis.

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Novel treatment of a biomass tar model compound via microwave-metal discharges

Cited by 48 publications

References 27 publications

Destruction of Toluene, Naphthalene and Phenanthrene as Model Tar Compounds in a Modified Rotating Gliding Arc Discharge Reactor

Destruction of Toluene, Naphthalene and Phenanthrene as Model Tar Compounds in a Modified Rotating Gliding Arc Discharge Reactor

Microwave-based preparation and characterization of Fe-cored carbon nanocapsules with novel stability and super electromagnetic wave absorption performance

The Effect of Packing Material Properties on Tars Removal by Plasma Catalysis

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