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R. B. Gun (1989)
Petroleum Asphalts
I. B. Grudnikov (1983)
Production of Petroleum Asphalts
(1969)
Research on Coal Briquetting
D. A. Guseinov, S. A. Faramazov (1957)
Technology and Mechanization of Petroleum Asphalt Production
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
Chemistry and Technology of Fuels and Oils – Springer Journals
Published: Aug 26, 2007
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