Composition of Initiated Cracking Products of High-Sulfur Natural Bitumen

The analysis of the cracking products of bitumen Karmalskoye deposits (the content of fractions boiling up to 200 degrees C 6,7 % wt.) has been performed. The influence of power plant coal ash microspheres on orientation of cracking bitumen components is stated. Bitumen cracking leads to significant yields of gas and coke for more than 20 % wt. and destructions of all components. The initiated bitumen cracking in the presence of 10 % microspheres at cracking temperature 450 degrees C leads to reduction of gas and coke yields and increase in fractions of ibp (initial boiling point) -360 degrees C at 10 % wt. in comparison with products of the thermal bitumen cracking. The analysis of composition and amount of sulfur compounds in initial bitumen and the cracking products in the various conditions has shown that the thermal cracking leads to increased homologues benzothiophene contents due to partial destruction of resins, and to decrease in the content of homologues dibenzothiophene. (C) 2014 The Authors. Published by Elsevier B. V.