Chemical recycling of municipal packaging waste by pyrolysis

  1. López Urionabarrenechea, Alex
Zuzendaria:
  1. Isabel De Marco Rodríguez Zuzendaria

Defentsa unibertsitatea: Universidad del País Vasco - Euskal Herriko Unibertsitatea

Fecha de defensa: 2011(e)ko uztaila-(a)k 05

Epaimahaia:
  1. Pedro Luis Arias Ergueta Presidentea
  2. José Francisco Cambra Ibáñez Idazkaria
  3. Koldo Gondra Zubieta Kidea
  4. Meier Dietrich Kidea
  5. Sixto Arnaiz Kidea
Saila:
  1. Ingeniaritza Kimikoa eta Ingurumenaren Ingeniaritza

Mota: Tesia

Teseo: 313710 DIALNET lock_openADDI editor

Laburpena

[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.