Collect. Czech. Chem. Commun.
1985, 50, 2903-2909
https://doi.org/10.1135/cccc19852903
Coke formation during the pyrolysis of hydrocarbons in the presence of sulphur compounds
Martin Bajus and Jozef Baxa
Department of Petroleum Chemistry and Technology, Faculty of Chemical Technology, Slovak Institute of Technology, 812 37 Bratislava
Abstract
The effect of 1-butanethiol, 0,0'-di-1-butyl dithiophosphate zinc, 0,0'-diethyl dithiophosphoric acid and carbon disulphide, respectively, on the formation of coke during the pyrolysis of a reformer raffinate at 820 °C and 100 kPa was studied using a stainless steel tube flow-through reactor. The sulphur compounds were added in amounts of 0.05 to 5.0 wt.%. The coke formation was followed from the beginning of the experiment. The coking rate was lower as compared with the pyrolysis of the pure reformer raffinate; 0,0'-di-1-butyl dithiophosphate zinc, 0,0'-diethyl dithiophosphoric acid and carbon disulphide have a strong inhibiting effect on the coke formation. The coking inhibition mechanism is discussed.
