Author, institution: Arūnas Jonušas, Kaunas University of Technology
Science area, field: Technological Sciences, Chemical Engineering (05T)
The Doctoral Dissertation is available at the library of Kaunas University of Technology (K. Donelaičio St. 20, Kaunas).
Scientific Supervisor: Assoc. Prof. Dr. Linas MIKNIUS (Kaunas University of Technology, Technological sciences, Chemical Engineering – 05T).
Dissertation defence board of Chemical Engineering Science Field:
Prof. Dr. Vytautas MICKEVIČIUS (Kaunas University of Technology, Technological Sciences, Chemical Engineering – 05T) – chairman;
Prof. Dr. Gintaras BUIKA (Kaunas University of Technology, Technological Sciences, Chemical Engineering – 05T);
Assoc. Prof. Dr. Jolanta ROUSSEAU (University of Artois, France, Technological Sciences, Chemical Engineering – 05T);
Dr. Nerijus STRIŪGAS (Lithuanian Energy Institute, Technological Sciences, Energetics and Thermal Engineering – 06T);
Prof. Dr. Saulius VASAREVIČIUS (Vilnius Gediminas Technical University, Technological Sciences, Environmental Engineering – 04T).
Annotation:
The thesis analyses the influence of pressure, fineness of the passenger car tires and motor oil content in the tires and oil mixture on yield, properties and fractional and component composition of the liquid product of thermolysis.
The aim of this work is to investigate the thermolysis process of used passenger car tires and determine the influence of process conditions on the yield, composition, physical and chemical properties of the thermolysis products.
The present research has determined the optimal conditions for tire rubber and Tire/Oil mixtures thermolysis which produce the highest yield of liquid product. The research shows that a higher yield of naphtha and diesel is obtained from the thermolysis of Tire/Oil mixtures than from tires alone. The chemical composition of liquid products obtained from tires and Tire/Oil mixtures under atmospheric pressure shows that the products are predominantly composed of aromatic hydrocarbons. The quantity of alkanes in the liquid product increases with higher process pressure and tire shredding degree. Increased process pressure, however, decreases the yield of alkenes, alkynes, dienes, trienes, and aromatic hydrocarbons in the liquid phase. The liquid products obtained after the catalytic hidrogenization are significantly lighter and have a lower sulfur and olefin content. The process also removed an unpleasant odour of cracked derivatives. Based on the experimental results of the research, the principal flowsheet of thermolysis and hydrogenation of the final products have been proposed.
