Abstract
Fundamental studies have been made to get low-sulfur fuels from petroleum residue. Asphalts were decomposed to gases, oil and coke by dry distillation.The data concerning on product yield and sulfur distribution were obtained in temperature range 400-1000°C. As raising temperature, cracking proceeded up to 700°C and dehydrogenation of coke followed in higher temperature. Sulfur content of oil was 2. 4-3.4wt.%, and H2S was 2. 0-8. 0vol.% of gas produced. More than 40wt.% of feed sulfur remained in coke.Coke was converted to carbon oxides and hydrogen by steam. CaO, BaCO3, MgO, Na2CO3 and K2CO3 catalyzed these reactions, and CaO accepted sulfur by the reaction CaO+H2S=CaS+H2O.Hydrogen had little effects on product yield and sulfur distribution.
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