CARBONIZATION OF PITCHES IN AIR BLOWING BATCH REACTOR

被引：11

作者：

CHOI, JH ^{[1
]}

KUMAGAI, H ^{[1
]}

CHIBA, T ^{[1
]}

SANADA, Y ^{[1
]}

机构：

[1] HOKKAIDO UNIV,FAC ENGN,SAPPORO,HOKKAIDO 060,JAPAN

来源：

CARBON | 1995年 / 33卷 / 02期

关键词：

AIR BLOWING; KINETICS; TOLUENE INSOLUBLE; COAL TAR PITCH; PETROLEUM PITCH;

D O I：

10.1016/0008-6223(94)00112-D

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Carbonization of petroleum and coal tar pitches to toluene insoluble fraction (TI) was investigated under air and nitrogen gas blowing systems. The TI yield was evaluated on the basis of the weight of pitch loaded. Changes of the yield with the reaction time were analyzed by a kinetic model of carbonization. The model assumes that pitch as a reactant contains a reactive component, P-1, which converts to active thermal fragment, P*, and gas and tar, G, more quickly than the residual component, P-2, exhibiting a nonlinear decrease of pitch in semi-logarithmic plot against the reaction time in an early stage of the reaction. The activation energies for P-1 and P-2 conversions depended on pitch and gas atmosphere. In particular, activation energies for P-1 conversion in the air blowing system was found to be appreciably smaller than those in the nitrogen blowing system. This less temperature-sensitive carbonization in the former system may be attributed to pitch reactivity improved by oxygen in air.

引用

页码：109 / 114

页数：6

共 18 条

[1]

Maeda, Zeng, Tokumitsu, Mondori, Mochida, Carbon, 31, (1993)

[2]

Zeng, Maeda, Tokumitsu, Mondori, Mochida, Carbon, 31, (1993)

[3]

Zeng, Et al., Carbon, 31, (1993)

[4]

Barr, Lewis, Carbon, 16, (1978)

[5]

Maeda, Tokumitsu, Morita, Mochida, 19th Biennial Conf. on Carbon, Penn State, Univ., (1989)

[6]

Maeda, Et al., 19th Biennial Conf. on Carbon, (1989)

[7]

Mochida, Inaba, Korai, Fujitsu, Takeshida, Carbon, 21, (1983)

[8]

Yanagisawa, Suzuki, Fuel, 72, (1993)

[9]

Brooks, Taylor, Chemistry and Physics of Carbon, 4, (1968)

[10]

Honda, Kimura, Sanada, Sugawara, Furuta, Carbon, 8, (1970)

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