Viability study of production and atomization of tire pyrolysis oil in Brazil

Author(s)

Alexander Alberto Rodriguez Gamboa

• Document type: Doctoral Thesis
• Press: Guaratinguetá. 2020-09-28.
• Institution: Universidade Estadual Paulista (Unesp). Faculdade de Engenharia. Guaratinguetá
• Defense date: 2020-07-07
• Advisor: João Andrade de Carvalho Junior; Leila Ribeiro dos Santos; Ana Maura Araújo Rocha

Abstract

The application of pyrolysis, as a recycling technology, has been proposed as an environmentally friendly solution for waste tires, but a feasibility evaluation must be carried out in each country. In this work was performed an evaluation of the feasibility of producing tire pyrolysis oil (TPO) in Brazil focused on three aspects: amount of feedstock (waste tires) available, potential volume of TPO and energy self-sufficiency of the process. In addition, a study of the quality of the TPO spray obtained by means a twin-fluid atomizer type Y-jet was performed. The evaluation of the feasibility production was carried out based on data published by specialized journals and annual reports of the environmental institutions of the Brazilian government that regulate the management of waste tires. Meanwhile, the study of the quality of the TPO spray was based on the measurement of the main atomization properties of the TPO and on the collection of experimental data of Sauter mean diameter and mass median diameter of the TPO spray. The results of the viability of TPO production showed that it is possible to produce around 240 to 290 thousand m³ per year of TPO in Brazil. The energy evaluation of the tire pyrolysis process showed that between 1,47 to 2,16 kJ are needed to pyrolyze 1 g of tire in the range temperature of 698 to 848 K. Furthermore, the energy self-sufficiency evaluation showed that it is necessary to burn between 30 and 50 wt.% of the produced pyrolysis gas to meet the energy demand of the tire pyrolysis process. On the other hand, the characterization of the TPO showed that it has physical properties similar to diesel oil (DO), being possible to achieve the same atomization quality in terms of drop size. However, sprays of TPO and DO blends have shown that higher TPO content will produce a less uniform spray. (AU)

• FAPESP's process: 16/10274-9 - STUDY OF ATOMIZATION OF TYRE PYROLYTIC OIL-DIESEL BLENDS
• Grantee: Alexander Alberto Rodriguez Gamboa
• Support Opportunities: Scholarships in Brazil - Doctorate