Investigation of the effect of thermal conversion of propane-butane mixture with various metals on the yield of main products

Abstract

In the work, the effect of thermal conversion of the propane-butane mixture on the yield of the main products and the effect of transformation with different metals was studied. In the temperature range of 750-800 ℃, compared to the results with the catalyst created for the decomposition process of the propane-butane mixture at high temperatures, a decrease in the total yield of lower molecular unsaturated hydrocarbons, i.e., ethylene, propylene, and butylene, and an increase in the formation of hydrogen solids were observed. However, the conversion rate increased with increasing temperature, and the catalyst developed for propane-butane cracking at high temperatures was higher in the presence of 5%Ni. The transformation of 5%CoO*5%NiO*2%ZrO2*8%Na2SO4 with chromium in the temperature range of 600-750℃ allows to obtain ethylene 5.85-13.41%, propylene 3.56-7.14% and the total yield of lower molecular unsaturated hydrocarbons, i.e. ethylene, propylene and butylene 15.42-31.77%. At the same time, the conversion rate has increased. In this case, its values were much higher in the relatively low process temperature range compared to the results of untransformed 5%CoO*5%NiO*2%ZrO2*8%Na2SO4. In addition, the highest yield of propylene at 750 ℃ was 17.47%, the highest yield of propylene in the presence of untransformed 5%CoO*5%NiO*2%ZrO2*8%Na2SO4 was 16%, and -15.12% as a result of temperature-induced changes. The purpose of the work is to study the effect of transformation of the catalyst with different metals on the rate of decomposition reaction of propane-butane mixture at high temperatures and yield of main products.