Infrared measurementof biomass combustion in a wire mesh reactor

Uluca, Kıvanç
As a consequence of increasing emissions due to the global energy production, new clean combustion options which utilize biomass are being sought. Prior to using biomass in an industrial boiler, the combustion characteristics of the fuel have to be assessed so that the boiler and furnace can be designed or retrofitted. In this study, olive residue (OR), endogenous agricultural residue of Turkey was investigated using a wire mesh reactor (WMR) coupled with two infrared cameras. These cameras recorded radiometric data in mid-wave, 3-5μm, and long-wave, 8-12μm, infrared band. Infrared thermal imaging was used for the first time to observe the combustion of single fuel particles in a WMR. 2D thermal scanning of the WMR that operates at 1100°C was performed to verify homogenous temperature distribution along the mesh and it was observed that the mesh operates within ~40°C of average deviation. Single particle combustion experiments with OR particles with mass ranging 5-15mg were conducted to obtain ignition delay time, volatile and char combustion durations from the thermal radiation originated from combustion. Tunçbilek (TL) lignite samples (3mg) were selected for comparison purposes. The observations showed that in order to obtain similar burnout durations, a TL particle with ~3mg and a heavier OR particle ~11mg should be combusted. OR particles were observed to combust in two phases: volatile combustion followed by char combustion. The ignition delay time of OR did not have a direct relation with the particle mass since the process was initiated with gas-phase reactions. Oppositely, the particle mass influenced the volatile, char, and total combustion durations. Volatile, char combustion and burnout times were longer with increasing particle mass. An OR particle with an average mass of 10mg, burned out in 21s where 2s of volatile and 19s of char combustion. In addition, ignition delay time and char ignition time of the particle was measured as 9s and 11s respectively.


Emissions of NOx and SO2 from Coals of Various Ranks, Bagasse, and Coal-Bagasse Blends Burning in O-2/N-2 and O-2/CO2 Environments
Kazanç Özerinç, Feyza; Crnkovic, Paula Manoel; Levendis, Yiannis A. (2011-07-01)
Oxy-coal combustion is a viable technology, for new and existing coal-fired power plants, as it facilitates carbon capture and, thereby, can mitigate climate change. Pulverized coals of various ranks, biomass, and their blends were burned to assess the evolution of combustion effluent gases, such as NOx, SO2, and CO, under a variety of background gas compositions. The fuels were burned in an electrically heated laboratory drop-tube furnace in O-2/N-2 and O-2/CO2 environments with oxygen mole fractions of 20...
Film fabrication using corncob as lignocellulosic biomass
Ergün, Eylül Gökçe; Çulfaz Emecen, Pınar Zeynep; Bölükbaşı, Ufuk; Department of Chemical Engineering (2014)
Renewable biopolymer resource, lignocellulosic biomass, has emerged as an alternative raw material to petroleum-based resources for the sustainable production of materials, fuels and chemicals. In this study, the main focus was to constitute a novel and eco-friendly process to fabricate films from low value lignocellulosic agricultural residues in the absence of any additional film-forming compounds. In this scope, raw lignocellulosic biomass, namely corn cobs, was turned into films using the ionic liquid 1...
Investigation of Turkish lignites and biomass at high heating rates by using wire mesh apparatus
Baghirzade, Mammadbaghir; Kazanç Özerinç, Feyza; Department of Micro and Nanotechnology (2018)
Coal continues to play a significant role in energy production over the world. However, its limited procurement and enormous side effects on global warming, make governments and organizations turn towards renewable energy resources like biomass which is CO2 neutral. Prior to utilization of fuels in power plants, it is important to investigate fuel behavior at high temperatures and high heating rates, i.e., close to heating rates in industrial applications. This understanding enables engineers to design appr...
Upgrading Lignocellulosic Products to Drop-In Biofuels via Dehydrogenative Cross-Coupling and Hydrodeoxygenation Sequence
SREEKUMAR, Sanil; BALAKRİSHNAN, Madhesan; GOULAS, Konstantinos; Günbaş, Emrullah Görkem; GOKHALE, Amit; LOUİE, Lin; GRİPPO, Adam; SCOWN, Corinne; BELL, Alexis; TOSTE, Dean (2015-01-01)
Life-cycle analysis (LCA) allows the scientific community to identify the sources of greenhouse gas (GHG) emissions of novel routes to produce renewable fuels. Herein, we integrate LCA into our investigations of a new route to produce drop-in diesel/jet fuel by combining furfural, obtained from the catalytic dehydration of lignocellulosic pentose sugars, with alcohols that can be derived from a variety of bio- or petroleum-based feedstocks. As a key innovation, we developed recyclable transition-metal-free ...
Novel investigation of pyrolysis mechanisms and kinetics for functional groups in biomass matrix
Liu, Ruijia; Liu, Guijian; Yousaf, Balal; Niu, Zhiyuan; Abbas, Qumber (2022-01-01)
Biomass, as a renewable and sustainable energy resource, can be converted into environmentally friendly and practically valuable biofuels and chemical materials via pyrolysis. However, the process optimization and pyrolysis efficiency are restricted by the limited perception of the complicated mechanisms and kinetics for biomass pyrolysis. Here, to establish an in-depth mechanism model for biomass pyrolysis, we presented a novel investigation for the thermal evolutions and pyrolysis kinetics of the function...
Citation Formats
K. Uluca, “Infrared measurementof biomass combustion in a wire mesh reactor,” Thesis (M.S.) -- Graduate School of Natural and Applied Sciences. Mechanical Engineering., Middle East Technical University, 2019.