ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Catalytic gasification of pyrolytic oil from tire pyrolysis process

Lukáš Gašparovič, Lukáš Šugár, Ľudovít Jelemenský, and Jozef Markoš

Institute of Chemical and Environmental Engineering, Faculty of Chemical and Food Technology, Slovak University of Technology in Bratislava, 812 37, Bratislava, Radlinského 9, Slovakia

E-mail: jozef.markos@stuba.sk

Abstract: The present work deals with thermo-catalytic decomposition of pyrolytic oil from the scrap tire pyrolysis process. Such oil can be used as a model tar in an experimental study of tar removal from pyrolysis or gasification process gas. Several experiments under different conditions were carried out in order to determine conditions of the gasification and pyrolysis processes. Influence of the oil to steam ratio, temperature, and of the presence of dolomite catalyst was studied. Addition of water steam has positive effect on the hydrogen content in the outgoing process gas as well as on the conversion of the injected oil. The catalytic gasification experiment in a quasi steady state produced process gas with the composition: 61 mole % of H₂, 6.4 mole % of CO, and 11.7 mole % of CH₄. At temperatures lower than 800°C, the amount of process gas decreased resulting also in a decrease of the oil conversion. A comparison of gasification experiments using fresh calcined dolomite with experiments proceeding with regenerated dolomite was done under the same conditions. There was a decrease in the process gas volumetric flow when regenerated catalyst was used.

Keywords: tire oil – gasification – pyrolysis – dolomite – catalyst

Full paper is available at www.springerlink.com.

DOI: 10.2478/s11696-013-0371-3

Chemical Papers 67 (12) 1504–1513 (2013)