Intensification of thermal coal and coke oxidation by metal oxides and their precursors

Research output: Contribution to journalConference article

Abstract

Oxidation process of bituminous coal, anthracite, and coke obtained after pyrolytic treatment of the corresponding fuels (bituminous coal and anthracite) modified with activating additives in the form of Cu(NO3)2 and Fe(NO3)2 in the amount of 5 wt% was studied. Application of the additives was carried out by incipient wetness impregnation method with preliminary dissolution of the additive in a water-alcohol solution with a volume ratio of C2H5OH/H2O=50/50. Additionally modified samples were subjected to thermal treatment at a temperature corresponding to the decomposition of the considered metal nitrates (about 220 °C) to ensure close contact between additives (metal oxides) and carbon materials. Oxidation process was performed by thermogravimetric analysis at a heating rate of 10 °C/min in the temperature range 45-1000 °C at atmospheric pressure. It has been established that application of activating additives in the form of metal oxides and their precursors helps to reduce the initial temperature of intense oxidation (Δti = 15-80 °C) and to shift the process to the low-temperature region as a whole. Mass spectrometric analysis was used to determine the qualitative composition of the gas-phase oxidation products. Decrease in the initial temperature of intense oxidation contributed to a decrease in the intensity of NOx release in the region of high temperature oxidation of the carbon residue.

Original languageEnglish
Article number012037
JournalJournal of Physics: Conference Series
Volume1565
Issue number1
DOIs
Publication statusPublished - 28 Jul 2020
Event11th All-Russian Scientific Conference with International Participation on Thermophysics and Power Engineering in Academic Centers, TPEAC 2019 - St.Petersburg, Russian Federation
Duration: 21 Oct 201923 Oct 2019

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Intensification of thermal coal and coke oxidation by metal oxides and their precursors'. Together they form a unique fingerprint.

  • Cite this