Recuperação energética de pneus inservíveis: uma revisão sistemática sobre a sua utilização na indústria cimenteira e no processo de pirólise

Abstract

Unasable tires are highly significant and important waste for the industry, however, when their final disposal is done incorrectly, they can cause numerous negative damage to the economy and the environment. One of the most common uses for this elimination is co-processing through combustion to generate energy in cement industries, due to its high calorific value. Another possible destination for this leak is the pyrolysis process, an operation capable of producing pyrolytic oil, a product that can be used as an alternative energy source, including in certain types of combustion engines. Therefore, the present work intends to carry out a study on existing methodologies to carry out a systematic bibliographic review about energy recovery from the use of scrap tires, with an approach to atmospheric emissions. Regarding co-processing in cement industries, it was observed that the emission of pollutants depends on numerous variables, and it was also found that in no case did these emissions exceed the limits imposed by the legislation of the country in which each study was carried out. Furthermore, regarding the pyrolysis process, it was observed that all the products obtained in the process have different uses, but despite this, the use of the liquid fraction in certain types of combustion engines is impossible due to the high sulfur content present on alternative fuel. In general, this work proved that the use of scrap tires is an environmentally and economically viable alternative.