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Production of pitches by thermooxidative condensation

Production of pitches by thermooxidative condensation Chemistry and Technology of Fuels and Oils, Vol. 34, No. 5. 1998 L. V. Doimatov UI~ 665.5 One of the methods used to obtain briquettes and electrode pitch with predetermined properties is the thermooxidative condensation of various petroleum resids under appropriate conditions. The course of this process is influenced by the tempera- ture, the input of oxygen-containing gas, and the duration of its contact with the feed; the process is also greatly influenced by the hydrocarbon composition of the feed [1-3]. With temperatures of the reaction mass above 300~ dehydrogenation processes are accelerated, as are condensation reactions [1]. As a result, the still residue becomes enriched in high-molecular-weight condensation products, and its coke- forming and sintering properties are enhanced [4]. For example, the carbon residue of the asphalt obtained by thetmooxidative condensation of cracked tar is 28% for a process temperature of200*C, 31.2-35.1% at 300~ depending on the depth of oxidation, and 36.2-37.8% at 325-350"C. We have carried out a laboratory study to determine the feasibility of producing pitches by thermooxidative condensation of two cracked tars Gable 1), varying the temperature, air input rate, and duration of the process. The results of these studies of a medium-sulfur tar obtained http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Chemistry and Technology of Fuels and Oils Springer Journals

Production of pitches by thermooxidative condensation

Chemistry and Technology of Fuels and Oils , Volume 34 (5) – Aug 26, 2007

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References (4)

Publisher
Springer Journals
Copyright
Copyright © 1999 by Kluwer Academic/Plenum Publishers
Subject
Chemistry; Industrial Chemistry/Chemical Engineering; Mineral Resources; Geotechnical Engineering
ISSN
0009-3092
eISSN
1573-8310
DOI
10.1007/BF02694082
Publisher site
See Article on Publisher Site

Abstract

Chemistry and Technology of Fuels and Oils, Vol. 34, No. 5. 1998 L. V. Doimatov UI~ 665.5 One of the methods used to obtain briquettes and electrode pitch with predetermined properties is the thermooxidative condensation of various petroleum resids under appropriate conditions. The course of this process is influenced by the tempera- ture, the input of oxygen-containing gas, and the duration of its contact with the feed; the process is also greatly influenced by the hydrocarbon composition of the feed [1-3]. With temperatures of the reaction mass above 300~ dehydrogenation processes are accelerated, as are condensation reactions [1]. As a result, the still residue becomes enriched in high-molecular-weight condensation products, and its coke- forming and sintering properties are enhanced [4]. For example, the carbon residue of the asphalt obtained by thetmooxidative condensation of cracked tar is 28% for a process temperature of200*C, 31.2-35.1% at 300~ depending on the depth of oxidation, and 36.2-37.8% at 325-350"C. We have carried out a laboratory study to determine the feasibility of producing pitches by thermooxidative condensation of two cracked tars Gable 1), varying the temperature, air input rate, and duration of the process. The results of these studies of a medium-sulfur tar obtained

Journal

Chemistry and Technology of Fuels and OilsSpringer Journals

Published: Aug 26, 2007

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