Co-carbonization processes of a petroleum asphalt and coal-derived liquids

An approach to co-carbonization compatibility

Yozo Korai, Isao Mochida

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

Mixtures of three principal carbonizing materials (Kafji vacuum asphalt (KF-VR), solvent-refined coal (SRC) and solvent-treated coal (STC)) with five additives (three Ashland petroleum pitches (A240, A200 and A170), quinoline-soluble residue of steam-cracked crude oil (KP-QS) and coal-tar pitch (CTP-ASM)) were co-carbonized and development of optical texture in the resultant cokes was assessed to evaluate the compatibility of the mixtures. CTP-ASM showed the highest compatibility for KF-VR, but failed to modify STC. By contrast, A240 modified KF-VR and STC so that flow texture developed. FT-i.r. spectra of co-carbonization intermediates from STC had absorption bands between 1100-1300 cm-1 attributable to phenoxyl groups. These were also present in co-carbonizations with CTP-ASM, but were only just apparent in co-carbonizations with A240. Measurement of naphthenic hydrogen, defined as Rnus, during co-carbonization, was consistent with deoxygenation via hydrogen transfer. Thus, the modifying activities of A240 and CTP are differentiated by the availability of transferrable hydrogen. Mechanisms of co-carbonization are discussed.

Original languageEnglish
Pages (from-to)893-899
Number of pages7
JournalFuel
Volume62
Issue number8
DOIs
Publication statusPublished - Jan 1 1983

Fingerprint

asphalt
Coal
Petroleum
Carbonization
Cytidine Triphosphate
Asphalt
Crude oil
Liquids
Hydrogen
Textures
Coal Tar
Coal tar
Steam
Absorption spectra
Availability
Vacuum

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Co-carbonization processes of a petroleum asphalt and coal-derived liquids : An approach to co-carbonization compatibility. / Korai, Yozo; Mochida, Isao.

In: Fuel, Vol. 62, No. 8, 01.01.1983, p. 893-899.

Research output: Contribution to journalArticle

@article{da1d581dce784e2eb56144563b0a4930,
title = "Co-carbonization processes of a petroleum asphalt and coal-derived liquids: An approach to co-carbonization compatibility",
abstract = "Mixtures of three principal carbonizing materials (Kafji vacuum asphalt (KF-VR), solvent-refined coal (SRC) and solvent-treated coal (STC)) with five additives (three Ashland petroleum pitches (A240, A200 and A170), quinoline-soluble residue of steam-cracked crude oil (KP-QS) and coal-tar pitch (CTP-ASM)) were co-carbonized and development of optical texture in the resultant cokes was assessed to evaluate the compatibility of the mixtures. CTP-ASM showed the highest compatibility for KF-VR, but failed to modify STC. By contrast, A240 modified KF-VR and STC so that flow texture developed. FT-i.r. spectra of co-carbonization intermediates from STC had absorption bands between 1100-1300 cm-1 attributable to phenoxyl groups. These were also present in co-carbonizations with CTP-ASM, but were only just apparent in co-carbonizations with A240. Measurement of naphthenic hydrogen, defined as Rnus, during co-carbonization, was consistent with deoxygenation via hydrogen transfer. Thus, the modifying activities of A240 and CTP are differentiated by the availability of transferrable hydrogen. Mechanisms of co-carbonization are discussed.",
author = "Yozo Korai and Isao Mochida",
year = "1983",
month = "1",
day = "1",
doi = "10.1016/0016-2361(83)90155-2",
language = "English",
volume = "62",
pages = "893--899",
journal = "Fuel",
issn = "0016-2361",
publisher = "Elsevier BV",
number = "8",

}

TY - JOUR

T1 - Co-carbonization processes of a petroleum asphalt and coal-derived liquids

T2 - An approach to co-carbonization compatibility

AU - Korai, Yozo

AU - Mochida, Isao

PY - 1983/1/1

Y1 - 1983/1/1

N2 - Mixtures of three principal carbonizing materials (Kafji vacuum asphalt (KF-VR), solvent-refined coal (SRC) and solvent-treated coal (STC)) with five additives (three Ashland petroleum pitches (A240, A200 and A170), quinoline-soluble residue of steam-cracked crude oil (KP-QS) and coal-tar pitch (CTP-ASM)) were co-carbonized and development of optical texture in the resultant cokes was assessed to evaluate the compatibility of the mixtures. CTP-ASM showed the highest compatibility for KF-VR, but failed to modify STC. By contrast, A240 modified KF-VR and STC so that flow texture developed. FT-i.r. spectra of co-carbonization intermediates from STC had absorption bands between 1100-1300 cm-1 attributable to phenoxyl groups. These were also present in co-carbonizations with CTP-ASM, but were only just apparent in co-carbonizations with A240. Measurement of naphthenic hydrogen, defined as Rnus, during co-carbonization, was consistent with deoxygenation via hydrogen transfer. Thus, the modifying activities of A240 and CTP are differentiated by the availability of transferrable hydrogen. Mechanisms of co-carbonization are discussed.

AB - Mixtures of three principal carbonizing materials (Kafji vacuum asphalt (KF-VR), solvent-refined coal (SRC) and solvent-treated coal (STC)) with five additives (three Ashland petroleum pitches (A240, A200 and A170), quinoline-soluble residue of steam-cracked crude oil (KP-QS) and coal-tar pitch (CTP-ASM)) were co-carbonized and development of optical texture in the resultant cokes was assessed to evaluate the compatibility of the mixtures. CTP-ASM showed the highest compatibility for KF-VR, but failed to modify STC. By contrast, A240 modified KF-VR and STC so that flow texture developed. FT-i.r. spectra of co-carbonization intermediates from STC had absorption bands between 1100-1300 cm-1 attributable to phenoxyl groups. These were also present in co-carbonizations with CTP-ASM, but were only just apparent in co-carbonizations with A240. Measurement of naphthenic hydrogen, defined as Rnus, during co-carbonization, was consistent with deoxygenation via hydrogen transfer. Thus, the modifying activities of A240 and CTP are differentiated by the availability of transferrable hydrogen. Mechanisms of co-carbonization are discussed.

UR - http://www.scopus.com/inward/record.url?scp=0020799781&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0020799781&partnerID=8YFLogxK

U2 - 10.1016/0016-2361(83)90155-2

DO - 10.1016/0016-2361(83)90155-2

M3 - Article

VL - 62

SP - 893

EP - 899

JO - Fuel

JF - Fuel

SN - 0016-2361

IS - 8

ER -