Pyrolysis characteristics and mechanism of hydrocarbon compounds for RDF

Abstract

With the help of pyrolysis gas chromatography–mass spectrometry (Py-GC-MS), high resolution thermogravimetric instrument and CHONS elemental analyzer, the pyrolysis products of refuse-derived fuel (RDF) in different months in one year are studied in this article. And the three kinds of RDF are denoted as A, B and C, respectively. High resolution thermogravimetric tests showed that obvious chemical reactions took place for RDF samples in the temperature ranges of 433–623 K, 623–773 K and 773–1173 K. RDF samples were tested by Py-GC-MS under 623 K, 773 K or 1173 K while He was as the balance gas, and the qualitative and semi-quantitative analysis results were obtained by introducing pyrolysis products into gas chromatography–mass spectrometry. According to the Py-GC-MS tests, the kinds and contents of pyrolysis products increased with the rising of the temperature, and RDF pyrolysis finished prior to 1173 K. Primary discussion for pyrolysis mechanism is progressed according to main pyrolysis products and the change of their relative contents, which can be used to provide the significant fundamental research of homogeneous reduction for NOx removal.