Improvements to needle-coke quality by pressure reductions from a tube reactor

Isao Mochida, Takashi Oyama, Yozo Korai

研究成果: ジャーナルへの寄稿記事

11 引用 (Scopus)

抄録

Needle coke of excellent uniaxial orientation and thermal expansion of 0.6 × 10-6/°C was produced at 460°C in a tube bomb from a low sulfur petroleum vacuum residue by reducing the carbonization pressure from 15 to 7 kg/cm2G at the solidification stage. Both timing and rate of pressure reduction are critical to the uniaxial arrangement of mesophase molecules that governs the coke quality. Reduction of pressure before the formation of bulk mesophase or after the solidification did not induce an improvement. Excess gas evolution by the larger rate of pressure reduction creates excessive porosity, although the uniaxial arrangement may be improved. A too-small rate is not effective in modifying the lamellar arrangements at the solidification stage.

元の言語英語
ページ(範囲)57-60
ページ数4
ジャーナルCarbon
26
発行部数1
DOI
出版物ステータス出版済み - 1988

Fingerprint

Coke
Needles
Solidification
Petroleum
Carbonization
Sulfur
Thermal expansion
Crude oil
Porosity
Gases
Vacuum
Molecules

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

これを引用

Improvements to needle-coke quality by pressure reductions from a tube reactor. / Mochida, Isao; Oyama, Takashi; Korai, Yozo.

:: Carbon, 巻 26, 番号 1, 1988, p. 57-60.

研究成果: ジャーナルへの寄稿記事

Mochida, Isao ; Oyama, Takashi ; Korai, Yozo. / Improvements to needle-coke quality by pressure reductions from a tube reactor. :: Carbon. 1988 ; 巻 26, 番号 1. pp. 57-60.
@article{7c6511b40ba44955855519df35406a3b,
title = "Improvements to needle-coke quality by pressure reductions from a tube reactor",
abstract = "Needle coke of excellent uniaxial orientation and thermal expansion of 0.6 × 10-6/°C was produced at 460°C in a tube bomb from a low sulfur petroleum vacuum residue by reducing the carbonization pressure from 15 to 7 kg/cm2G at the solidification stage. Both timing and rate of pressure reduction are critical to the uniaxial arrangement of mesophase molecules that governs the coke quality. Reduction of pressure before the formation of bulk mesophase or after the solidification did not induce an improvement. Excess gas evolution by the larger rate of pressure reduction creates excessive porosity, although the uniaxial arrangement may be improved. A too-small rate is not effective in modifying the lamellar arrangements at the solidification stage.",
author = "Isao Mochida and Takashi Oyama and Yozo Korai",
year = "1988",
doi = "10.1016/0008-6223(88)90009-7",
language = "English",
volume = "26",
pages = "57--60",
journal = "Carbon",
issn = "0008-6223",
publisher = "Elsevier Limited",
number = "1",

}

TY - JOUR

T1 - Improvements to needle-coke quality by pressure reductions from a tube reactor

AU - Mochida, Isao

AU - Oyama, Takashi

AU - Korai, Yozo

PY - 1988

Y1 - 1988

N2 - Needle coke of excellent uniaxial orientation and thermal expansion of 0.6 × 10-6/°C was produced at 460°C in a tube bomb from a low sulfur petroleum vacuum residue by reducing the carbonization pressure from 15 to 7 kg/cm2G at the solidification stage. Both timing and rate of pressure reduction are critical to the uniaxial arrangement of mesophase molecules that governs the coke quality. Reduction of pressure before the formation of bulk mesophase or after the solidification did not induce an improvement. Excess gas evolution by the larger rate of pressure reduction creates excessive porosity, although the uniaxial arrangement may be improved. A too-small rate is not effective in modifying the lamellar arrangements at the solidification stage.

AB - Needle coke of excellent uniaxial orientation and thermal expansion of 0.6 × 10-6/°C was produced at 460°C in a tube bomb from a low sulfur petroleum vacuum residue by reducing the carbonization pressure from 15 to 7 kg/cm2G at the solidification stage. Both timing and rate of pressure reduction are critical to the uniaxial arrangement of mesophase molecules that governs the coke quality. Reduction of pressure before the formation of bulk mesophase or after the solidification did not induce an improvement. Excess gas evolution by the larger rate of pressure reduction creates excessive porosity, although the uniaxial arrangement may be improved. A too-small rate is not effective in modifying the lamellar arrangements at the solidification stage.

UR - http://www.scopus.com/inward/record.url?scp=0023842678&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0023842678&partnerID=8YFLogxK

U2 - 10.1016/0008-6223(88)90009-7

DO - 10.1016/0008-6223(88)90009-7

M3 - Article

AN - SCOPUS:0023842678

VL - 26

SP - 57

EP - 60

JO - Carbon

JF - Carbon

SN - 0008-6223

IS - 1

ER -