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Title: Meso-phase Pitches from the Residue of Oil Refinery
Authors: Maheshwari, R K
Pundhir, N K S
Keywords: Meso-phase pitches;Oil refinery;Bitumen
Issue Date: Sep-2003
Publisher: NISCAIR-CSIR, India
Abstract: The meso-phase pitches were prepared after heating bitumen (residue of oil refinery) at 370-500°C for preparation of different types of industrial products such as, carbon fibres, high density graphite, needle coke and many other value added products. The variety of pitches are prepared by polymerization and condensation reactions during heat treatment , depending upon several factors like, rate of heating, duration of heat treatment, atmosphere, rate of flowing gas, pressure and type of vessel. Rheological behaviour indicates that polymerization takes place at higher temperature. The kinetic parameters such as, order of reaction (n) and activation energy (Ea) were calculated from thermograms and the value was found to be about 34 k cal/mol. Some pitches like, binder pitches, impregnating pitches of very high industrial importance are obtained from meso-phase pitches with due selection of different properties.
Page(s): 876-882
ISSN: 0975-1084 (Online); 0022-4456 (Print)
Appears in Collections:JSIR Vol.62(09) [September 2003]

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