Chemical recycling of municipal packaging waste by pyrolysis

  1. López Urionabarrenechea, Alex
unter der Leitung von:
  1. Isabel De Marco Rodríguez Doktorvater/Doktormutter

Universität der Verteidigung: Universidad del País Vasco - Euskal Herriko Unibertsitatea

Fecha de defensa: 05 von Juli von 2011

Gericht:
  1. Pedro Luis Arias Ergueta Präsident/in
  2. José Francisco Cambra Ibáñez Sekretär/in
  3. Koldo Gondra Zubieta Vocal
  4. Meier Dietrich Vocal
  5. Sixto Arnaiz Vocal
Fachbereiche:
  1. Ingeniería Química y del Medio Ambiente

Art: Dissertation

Teseo: 313710 DIALNET lock_openADDI editor

Zusammenfassung

[EN]The present doctoral thesis centers on studying pyrolysis as a chemical recycling technique for rejected packaging waste fractions coming from separation and sorting plants. The pyrolysis experiments have been carried out in a lab-scale installation equipped with a 3.5 L semi-batch reactor and a condensation and collection system for the liquids and gases generated. In the present thesis, an experimental study on the conventional pyrolysis process applied to the aforementioned waste fractions has been conducted, as well as the study of non-conventional or advanced pyrolysis processes such as catalytic and stepwise pyrolysis. The study of the operating parameters has been carried out using a mixed plastics simulated sample, the composition of which is similar to that found in real fractions, and subsequently the optimized process has been applied to real packaging waste. An exhaustive characterization of the solids, liquids and gases obtained in the process has been made after each experiment and their potential uses have been established. Finally, an empirical model that will predict the pyrolysis yields (% organic liquid, % aqueous liquid, % gases, % char, % inorganic solid) as a function of the composition of the initial sample has been developed. As a result of the experimental work done, the requirements have been established for an industrial packaging waste pyrolysis plant that aims to be sufficiently versatile as to generate useful products regardless of the nature of the raw material.