Compaction and cementing of char particles with a tar-derived binder

Taylor, John

doi:10.1016/0016-2361(88)90066-x

Cited by 17 publications

(6 citation statements)

References 2 publications

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“…Although the mechanical properties of the activated briquettes were notably increased as expected, one of the lowest values for the BET area is seen. This behavior might be understood as a micro-intrusion of liquid binder into cracks and voids of the char structure due to the higher pressure, according to the compaction and cementing m odel proposed by Taylor (1988). As the sample is thermally treated and activated, the binder is cemented and might block some of the surface, which would no longer be available to the activating agent.…”

Section: Resultsmentioning

confidence: 99%

“…Briquetting processes applied to coals were reviewed by Rhys-Jones (1963) and Schinzel (1981). A theoretical picture that represents both the principal facets of char briquetting and conversion of raw briquettes into formed coke was presented by Taylor (1988). Clarke and Marsh (1989) assessed the factors that generally affect the properties of coal briquettes.…”

Section: Introductionmentioning

confidence: 99%

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Use of grape must as a binder to obtain activated carbon briquettes

Deiana

Granados

Petkovic

et al. 2004

Braz. J. Chem. Eng.

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-The results of studies on briquetting activated-carbon-based adsorbent materials, prepared from raw materials from the region of Cuyo, Argentina, are reported in this article. Several steps were carried out to obtain activated-carbon briquettes from Eucalyptus camaldulensis Dehn wood. These steps included carbonization of wood to obtain char; blending of char and a novel binder, i.e., grape must; formation of cylinder-like briquettes by pressure; and activation of the resulting material. The material was activated with steam under different temperatures, activation times, and activating agent flow rates. Impact resistance index, axial compressive strength, tensile strength by diametrical compression, BET area, and pore volume were measured for product characterization. Satisfactory surface areas and mechanical strengths were found in the final products.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Use of grape must as a binder to obtain activated carbon briquettes

Deiana

Granados

Petkovic

et al. 2004

Braz. J. Chem. Eng.

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“…This result may indicate that the number of VD treatments slightly influences the gasification rate of coke prepared from VD samples. As is well known, tar can act as a binder for coke-making [9,15,[19][20][21][22][23][24][25][26][27]. It has been estimated that deposited-tar on char acts as a binder among the char particles (gives compatibility), and the contact between the particles is improved, as the resulting gasification rate decreases with increasing number of VD treatments.…”

Section: Effect Of Number Of Vds On Coke Strength Prepared From C/c C...mentioning

confidence: 99%

“…Coal tar has been used as a binder (caking additive) in coke-making, and the binder mechanism has been widely researched [9,15,[19][20][21][22][23][24][25][26][27]. The addition of a caking additive to coal improves the coke quality, which is thought to be due to the increase in the bulk density that occurs after the addition of a binder.…”

Section: Introductionmentioning

confidence: 99%

Preparation of coke from biomass char modified by vapour deposition of tar generated during pyrolysis of woody biomass

Mochizuki

Tsubouchi

2022

Ironmaking & Steelmaking

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In this study, in order to use woody biomass for coke production, carbon/carbon composites are first prepared using the vapour deposition (VD) method, whereby gaseous-tars generated by the pyrolysis of pine sawdust is deposited onto the pyrolysed pine sawdust char by a vertical flow-type fixed-bed reactor with pyrolysis and VD zones. Then, coke properties and gasification reactivity of composite and composite/coal blends are investigated to clarify the binder effect of biomass tar on the properties of prepared coke. The carbon/carbon composites could be prepared with a high yield at a low VD temperature. High-strength and high-reactivity coke was produced from the composite. The properties of the coke produced from composite/caking coal blending showed that the optimum blending amount depends on the type of caking coal, but high-strength and high-gasification reactivity coke can be produced. Additionally, it was found that 3-15wt-%-biomass could be added as char for coke production.

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“…[1][2][3][4][5][6][7][8] In this work it is investigated for the first time the carbon surface modification by functionalization to produce special adsorbents based on activated carbon briquettes. This chemical modification can tailor the adsorbents by combining the advantages of a briquette shape with the presence of functional surface groups for special applications.…”

Section: Introductionmentioning

confidence: 99%

High surface area functionalized carbon briquettes: a novel adsorbent for contaminants from water

Costa¹,

Araújo²,

Sapag³

et al. 2005

J. Braz. Chem. Soc.

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Neste trabalho, as vantagens de carbonos funcionalizados com alta área superficial e a forma especial de briquete foram combinadas para a produção de um novo adsorvente de metais. Análises BET, TG, IR, sítios ácidos e EDS sugerem que a funcionalização com HNO 3 ocorre por todo o corpo do briquete. Foram estudadas também as isotermas e as cinéticas de adsorção de Cr 3+ , Zn 2+ e do corante azul de metileno.In this work, the advantages of special briquette shape and high surface area functionalized carbon were combined to produce a novel adsorbent for metals. BET, TG, IR, acid site and EDS analyses suggest that the functionalization with HNO 3 and metal adsorption takes place throughout the briquette body. The adsorption isotherms and kinetics have been studied for Cr 3+ , Zn 2+ and the dye methylene blue.

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Compaction and cementing of char particles with a tar-derived binder

Cited by 17 publications

References 2 publications

Use of grape must as a binder to obtain activated carbon briquettes

Use of grape must as a binder to obtain activated carbon briquettes

Preparation of coke from biomass char modified by vapour deposition of tar generated during pyrolysis of woody biomass

High surface area functionalized carbon briquettes: a novel adsorbent for contaminants from water

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