Obtencion de combustible a partir de la pirolisis termica de mezclas de polipropileno y poliestireno reciclados

Abstract

The objective of this work is to obtain fuel through a thermal pyrolysis process, in which combinations in different percentages of Polypropylene (PP) and Polystyrene (PS) were used as raw materials, plastics that were obtained from different recyclers in Riobamba. For the purposes of this study, a temperature range between 400 - 425 degrees Celsius was used. It was carried out in a batch reactor to which nitrogen gas was added in order to create a neutral atmosphere. The size of the raw material that entered the reactor was 200g, for which tests were carried out with various compositions. The first mix with 25% PP & 75% PS, the second mix with 50% PP & 50% PS, the third mix with 75% PP & 25% PS. Each one throwing a different liquid, solid and gaseous fraction. The liquid fraction with the highest yield was provided by the mixture with 25% PP & 75% PS, at a temperature of 425 degrees Celsius, having a total of 82.33% of this fraction, since previous studies could determine that Polystyrene has greater efficiency in liquid fraction in relation to Polypropylene. The caloric power analysis applied to this sample showed a value of 42515.28 KJ / Kg. It should be taken into consideration that the polymeric chains present in the fuel are very similar to those of Diesel, however, chains of other fuels are present and additional processes are necessary in order to refine it and later use it at an industrial level. When using a mixture of different types of plastics, it is recommended to homogenize it to obtain a better performance and eliminate air spaces incense burners